Chess Room Newsletter #867

Newsletter #867

April 20, 2019

By Abel Talamantez

Note: The TNM games and typos have been corrected in the previous newsletter. I would like to thank everyone for their feedback and patience, the engagement is always welcome and thanks to the Mechanics' Club community for always having our backs.

 

GM's Clash in 5th Round, Top Section Sees Logjam For Top Spot While the Other Two Sections Thin the Field

Round 5 of the Spring TNM concluded and caused chaos in the top section. It appeared NM Tenzing Shaw was running away with clear first by a full point in a tough field. After Tuesday, the results played out in a way that now sees a 5-way tie for first!

Also on their heels are FM's Kyron Griffith and Ezra Chambers at 3.5, and many players at 3.0, including GM Patrick Wolff, WGM Carla Heredia and WFM Natalya Tsodikova.

FM Andy Lee opened the door for everyone in the top section, squeezing a win over NM Tenzing Shaw. This catapulted him into a tie for the lead, and victories by NM Conrado Diaz and NM Eric Yuhan Li placed them in the mix as well. It will be a very exciting last 3 rounds, as players look to take control and create separation in what is arguably the strongest TNM ever. Of the 5 at the top, only FM Andy Lee has not had a blemish in play, and seems to be the favorite. No game is easy at the TNM, and the final rounds will be exciting.

Board 5 saw an exciting positional battle between 2 GM's, GM Patrick Wolff and WGM Carla Heredia, who was fresh off a 5.5/6 winning performance at the 2019 CalChess Women's Championship. The game was one of the last to finish and ended in a draw.

In the A/B section, Kristian Clemens defeated Thomas Maser to take over sole first at 4/5/5. William Gray and Richard Newey are close behind at 4.

In the under 1600 section, Victor Reyes remains perfect at 5/5 with a round 5 win against John Chan. Also remaining perfect is Susheel Khamkar. They will no doubt battle it out for sole possession of first next week.

You can see the current standings on our club website.

To watch our Live broadcast with commentary of round 5 of the TNM, watch the replay on our Mechanics' Institute Chess Club channel here.

 

Special Events with PRO Chess League Championship Weekend @ Mechanics' Institute

There will be two very big events at the Mechanics' Institute, in partnership with the PRO chess League, Twitch, and Chess.com!!

 

Mechanics' Institute Rapid Championship, Presented by PRO Chess League, May 2, 6:00 pm

On Thursday May 2, we will have the 2019 Mechanics' Institute Club Rapid Championship, Presented by PRO Chess League. This will be an open tournament in 3 sections, and our top section already has GM Jon Ludvig Hammer, GM Zviad Izoria, GM Conrad Holt, GM Steven Zierk, WGM Carla Heredia, IM Kostya Kavutskiy, IM Prasanna Rao, IM John Donaldson, IM Elliott Winslow, FM Josiah Stearman, FM Ezra Chambers, and FM Paul Whitehead as confirmed. Come join us for an amazing chess event, and compete for the title of Mechanics' Institute Rapid Champion. Time control is G/15 +2 and is 5 rounds, starting at 6pm. To register and save your spot, click here.

 

GM Eric Hansen Simultaneous Exhibition, Presented by PRO Chess League, May 3, 1:00 pm

As if Thursday wasn't enough, on Friday, GM Eric Hansen, prolific streamer and member of the Montreal Chessbrahs will give a 20-board simul at our historic club. This will also coincide with PRO Chess League media day, which will also be at our club. To register for the simul, click here.

The PRO Chess League championship will feature The St. Louis Arch Bishops led by Fabiano Caruana, Chengdu Pandas, Baden Baden Snowballs and Armenia Eagles. You can purchase tickets for the event held at Folsom Street Foundry here.

 

Tournament Director's Corner

Not on My Time!

There was a situation during the TNM where there was a complaint by a player regarding the adjustment of pieces, where a player claimed that his opponent was adjusting his pieces on the other player's time. I know this can actually happen often, and it is good to know the official rule on this, since it will be helpful to all players.

In the U.S. Chess Federation's Official Rules of Chess, 7th edition, Rule 10A. States:

Adjustment of Pieces: A player who is on the move and first expresses the intention to adjust (e.g., by saying j'adoube or I adjust) may adjust one or more pieces on their squares.

The FIDE rule is also in agreement:

6.2.5 Only the player whose clock is running is allowed to adjust the pieces.

The rule clearly states that it must be the adjusting player's move, as it would be rude to do so during the other player's time. In this scenario, I informed the player adjusting to please do so on his own time, and I awarded his opponent one extra minute.

Stop!!

There were a couple of games where there in one case, there was a problem with the setting of the clock, and the other, the clock malfunctioned. One of the players whose clock was still running asked if they should have paused the clock, because they thought it would be illegal to do so.

According to USCF Rule 5I: Stopping the Clock

A player who wishes to make a claim of any sort or see a director for any legitimate reason may stop both sides of the clock before claiming and/or finding a director. This book refers to such action as stopping the clock or stopping both clocks.

Here is the FIDE rule:

6.11.4 If a player stops the chessclock in order to seek the arbiter's assistance, the arbiter shall determine whether the player had any valid reason for doing so. If the player had no valid reason for stopping the chessclock, the player shall be penalized in accordance with Article 12.9.

In either case, players are allowed to stop the clock to seek an arbiter's help for a valid reason.

Players should be made aware of the fact that the person making the claim should stop the clock on their own time.

If anyone has any TD questions, feel free to reach out to us at [email protected].

 

Friendly Rivalries, Part 6

By FM Paul Whitehead

One of the tried and true tactics to beating your rivals is to keep them guessing.

Against the Sicilian Defense I often trotted out 3.Bb5 (+) to take my opponents out of their comfort zone and into mine, and often at the spur of the moment- sometimes I couldn't even predict it myself, and the chessboard became an Ouija board as my hand moved the bishop out, questioning…

I count these four games amongst my very best, not only for the quality of the opposition but also because the individual occasions were important to me, as I will explain.

(1) Whitehead,Paul A (2357) - Rohde,Michael A (2382) [B30]
US Junior Ch. Memphis, 1978

This was played in the last round, and by winning I became US Junior co-champion with Yasser Seirawan and John Fedorowicz. 1.e4 c5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 Nd4 5.e5 Nxb5 6.Nxb5 Nd5

7.0-0 7.Ng5 is known to be very strong. 7...a6 8.c4 Nb4 9.Nc3 d6 10.d4 cxd4 11.Qa4+ Nc6 12.Nd5 dxe5 13.Nxe5

13...Bd7? Leads to trouble. [13...b5 14.Nxc6 bxa4 15.Nxd8 Kxd8 is roughly equal.] 14.Nxd7 Kxd7 [14...Qxd7 15.Nb6 Qd8 16.Nxa8 Qxa8 is not much better.] 15.c5 Ke8 16.Nb6 Ra7!? Avoiding 16...Rb8 17. Bf4. 17.Bf4 e5? Panicking. 17...e6 hoding the fort down was correct. Black tries to free himself with tactics, but this is doomed to fail as White is better developed. 18.Bxe5 f6

19.Rfe1! fxe5 20.Rxe5+ Be7 21.Rae1 Kf8 22.Rd5 Qc7 23.Rd7 Qf4 24.g3 Qf5

25.Rexe7 Nxe7 26.Rd8+ Kf7 27.Qc4+ Kg6 28.Rxh8 Qb1+ 29.Kg2 Qe4+ 30.f3 Qe3

Black is essentialy a rook down. White just needs to be accurate... 31.Rf8 Qd2+ 32.Kf1 d3 33.Qe6+ Kh5 34.Qxe7 Qd1+ 35.Kg2 Qd2+ 36.Kh3 Qf2 37.Rf5+

1-0

(2) Whitehead,Paul A (2365) - Janosevic,Dragoljub (2400) [B30]
Lone Pine Lone Pine, 1979

My first win over a Grandmaster. 12 years earlier Janosevic had defeated Bobby Fischer at the Olympiad in Skopje, 1967. I was in great company! 1.e4 c5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nc3 a6 5.Bxc6 dxc6 6.h3

This was prophylaxis. 6...h6 Not prophylaxis! Now it was as though I could read my opponent's mind: he wanted to play ...g5 if I castled on the kings side. So I decided to wait. 7.d3 Qc7 8.e5 Nd5 9.Ne4 Bf5

10.Qe2 10.Nxc5? Qa5+. 10...0-0-0 I was right. Now White prepares queen-side castling also. 11.Bd2 e6 12.a3 g5?! Impatient. Developing with 12...Be7 followed by ...f6 at some point was better. Black weakens himself. 13.g4 Bg6 14.h4

White is better. 14...Be7 15.hxg5 hxg5 16.0-0-0 Nf4 17.Bxf4 Rxh1 18.Rxh1 gxf4 19.Nf6

Black's bishops lack targets, but with 19...Qa5 Black is only a bit worse. 19...b5?! Weakening. 20.Nh4 Bxf6 21.exf6 Rg8 22.Nf3

Black is surprisingly helpless. 22...Qd8 23.Qe5 Qd5 24.Rh3 Qxe5 25.Nxe5 Kc7 26.Rh6 Kd6 27.Nxg6 fxg6 28.g5 Ke5 29.Rxg6!

1-0

(3) Whitehead,Paul A (2370) - Fedorowicz,John P (2520) [B52]
New York Open New York (2), 1985

Black often takes a lackadaisical approach to 3.Bb5, as though to say: "I can be careless, White's opening lacks punch". This seems to be Black's sin here, and he falls to a devastating attack. This win over a strong GM and contemporary on his home ground has always been a favorite game of mine. 1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.a4!?

I think this is Larsen's move. Carlsen has now played it as well. 4...e6 5.0-0 Nc6 6.Re1 Nf6 7.c3 Be7 8.d4 cxd4 9.cxd4 a6 10.Bf1 d5 11.e5 Ne4 12.Nc3

Now Black can try 12...Ng5. 12...Nxc3 13.bxc3 Black should be all right here. 13...0-0 14.Bd3 Rc8 15.h4

Now the straightforward 15...Na5 is correct. Not 15...Bxh4 16. Nxh4 Qxh4 17. Re3 with a strong attack. 15...f5?! 16.exf6 gxf6 17.Bh6 Rf7 18.Re3 Kh8 19.h5

Toying with the idea of Nh4 and Ng6. 19...Bf8 20.Bf4 Rg7 21.Rb1! Distracting Black's knight away from the center. 21...Na5 22.h6 Re7? Careless. 22...Rg8 is Blacks' last hope. I think Black was suprised how quickly the position had reached critical mass. 23.Ne5!

Devastating. Qg4 followed by Rg3 is almost impossible to meet. 23...Rxc3 24.Qg4 Bxh6 25.Bxh6 fxe5 26.Qg5! And that's that! 26...Rxd3 27.Qf6+ Kg8 28.Rxd3

It's mate in 2. 1-0

(4) Whitehead,Paul (2352) - Stearman,Josiah P (2320) [B31]
Mechanics' Fall TNM; G/2 d5 San Francisco (7), 2017

This game was played 32 years after my win over Fedorowicz in New York, and is against an up and coming FM. Once again this deceptively simple opening would come through for me. 1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.0-0 Bg7 5.Re1 Nf6 6.Nc3 0-0 7.Bxc6 dxc6 8.e5

Now Black can re-route the Knight to e6 via e8 and c7. 8...Nd5 9.Ne4 b6 10.h3 Qc7?! 10...Nc7 and ...Ne6 to come was correct. 11.d3 f5 12.Ng3 f4 13.Ne4

Now Black should play a waiting game with 13...h6 or some such thing. 13...Bxe5?! 14.Nxc5 Bg7 15.Ne6 Bxe6 16.Rxe6

White is clearly better here in my view, an opinion that Josiah did not share. 16...Rad8 17.Rb1 c5 18.Qe2 Qd7 19.Re4+/- e5 20.Bd2

White now surrounds the e-pawn, giving Black zero counterplay. 20...Rf5 21.Re1 Re8 22.Bc3 Qc8 23.Qd1 Qc7 24.R1e2 Bf6 25.Qe1 Kg7 26.a3!

[26.Bxe5 Bxe5 27.Rxe5 Rfxe5 28.Rxe5 Rxe5 29.Qxe5+ Qxe5 30.Nxe5 Nb4=] 26...a5? [26...Nxc3+/-] 27.Bxe5 Bxe5 28.Rxe5 Rfxe5 29.Rxe5 Rxe5 30.Qxe5+ Qxe5 31.Nxe5

White is winning. 31...a4 32.c4 Ne7 33.Kf1 Nc8 34.Ke2 Kf6 35.Nf3 Nd6 36.Nd2 Nf5 37.Nb1 Nd4+ 38.Kf1 Nb3 39.Nc3 Nc1 40.Nxa4 Nxd3 41.Ke2

41...Nc1+ 42.Kd2 Nb3+ 43.Kd3 Ke5 44.Nxb6 g5 45.Nd7+ Kd6 46.Nf6 h6 47.Ng4 h5 48.Nf6 Ke5 49.Nxh5 Nc1+ 50.Kd2 Nb3+ 51.Kc3

51...Nd4 52.b4 cxb4+ 53.axb4 Ne2+ 54.Kd3 Nd4 55.Ng7 Nc6 56.b5 Ne7 57.Ne8

White won on time a few moves later. An important win for the older generation! 1-0

 

Nick de Firmian's Mate in 3

Last week's problem, mate in 3, white to move:

1. Rg2!!! Bxc3

2. Qxh7+ Kxh7

3. Rh3#

 

Tony's Teasers

Last week's problem, white to move, mate in 3.

1. Bg8!!! c2

2. Rf7 Ka2

3. Ra7#

This week's problem, mate in 2.

 

Wednesday Night Blitz Report

NM Anna Matlin convincingly won the April 17th edition of the Wednesday Night Blitz with a crushing 11 - 1 score. Second with 9 - 3 was Expert Arthur Ismakov, and 3rd Place was taken by Expert Jules Jelinek with with 8 - 4. This popular evening event attracted 12 players and was run smoothly by Mr. Jelinek.

The Wednesday Night Blitz will take a longish break now, resuming August 28th, so mark your calendar!

 

GM Nick de Firmian's Opening Lab

This week: Reti's Opening 1. Nf3 d5 2. c4

We continue with less usual openings, though now we consider one of the most respectable of them. Reti's Opening is a product of the "hypermodern" revolution of the 1920's that postulated that is was not necessary to occupy the center of the chess board, rather it was important to control it. Reti, along with Nimzovich, was at the forefront of the theory. Reti's Opening is a flexible flank opening with central pressure brought by the pieces. One of the big reasons that the "hypermodern" movement gained acceptance was the game Reti-Capablanca, New York 1924, in which our opening's author defeated the invincible Cuban champion with the new opening plan.

(1)

1.Nf3 d5 2.c4

There are three common ways for Black to respond to the attack on d5: A 2...dxc4

opening the game like a Queen's Gambit Accepted. White could play to recapture the pawn with 3. Qa4+ and Qxc4 or 3.e3, but the most ambitious move is the devolping 3.Na3

This is completely in harmony with the theme of the opening and should give White an active game, e.g. 3...c5 4.Nxc4 Nc6 5.b3 f6 6.Bb2 e5 7.g3 Nge7 8.Bg2 Nd5 9.0-0 Be7 10.Nh4 0-0 11.Qb1 Rf7 12.Nf5

with pressure on the kingside, Botvinnik-Fine, Nottingham 1936.

(2)

B. Black defends with the classical 2...e6 1.Nf3 d5 2.c4 e6

Now 3. d4 would transpose into the Queen's Gambit Declined, but the Reti player will choose pressure from the flank with 3.g3

The light squared bishop will aim through the center on the long diagonal. Play often continues 3...Nf6 4.Bg2 Be7 5.0-0 0-0 6.b3

keeping in the style of the Reti rather than transposing into a classical Catalan with 6. d4. 6...c5 7.Bb2 Nc6 8.e3 b6 9.Nc3 Bb7

This potent position has a lot of scope for active play on both sides.

(3)

C. Black plays 2...c6 in order to develop the light squared bishop before locking it in with ...e6. 1.Nf3 d5 2.c4 c6

This is a very solid system. Many players who like the Slav Defense will choose this. 3.g3 Nf6 4.b3 Bf5 5.Bg2 e6 6.0-0 Nbd7

Black has a strong, though slightly passive pawn wedge in the center. His first thought is to blunt any activity from White, particularly on the long h1-a8 diagonal. 7.Bb2 Bd6 8.d3 0-0 9.Nbd2

Black is developed with no problems and has a solid position. Still, White has a pleasant, flexible position and can choose whether to play for a queenside or a central advance.

(4) [A16]

D. Sometimes Black will not play 1...d5 and choose to develop in a hypermodern way. Players who use the King's Indian or the Grunfeld will likely play the following: 1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 0-0 5.0-0

There is a lot of scope for transpositions to Indian openings. Now 5...d5 is a kind of Grunfeld, while 5...c6 and 6...d5 is a Neo Grunfeld. 5...c5 would be a symmetrical English. King's Indian style is 5...d6 6.Nc3 Nbd7

when 7. d4 is the fianchetto variation of the King's Indian. Yet White can keep the game in flank opening style with 7. d3 or 7. b4. To finish we give the game that launched the opening into respectability.

(5) Reti,Richard - Capablanca,Jose Raul
New York, 1924

1.Nf3 Nf6 2.c4 g6 3.b4 Bg7 4.Bb2 0-0 5.g3 b6 6.Bg2 Bb7 7.0-0 d6 8.d3 Nbd7 9.Nbd2 e5 10.Qc2 Re8 11.Rfd1 a5 12.a3

Of course there has been logical play by Capablanca as Black. We cannot say that White has much of an edge, but Reti probably was happy with his fexible position and queenside possibilities. 12...h6 13.Nf1 c5 14.b5 Nf8 15.e3 Qc7 16.d4

Opening the position. Black must be carefule. 16...Be4 17.Qc3 exd4 18.exd4 N6d7 19.Qd2! Reti offers the c-pawn, which Capa should not have gone after. 19...cxd4 20.Bxd4 Qxc4

21.Bxg7 Kxg7 22.Qb2+ Kg8 23.Rxd6

White has regained the pawn with the more active pieces. 23...Qc5 24.Rad1 Ra7 25.Ne3 Qh5? This isn't a good square for the Black queen 26.Nd4 Bxg2 27.Kxg2 Qe5?!

The position was already difficult for Capa, but now the White pieces jump into action. 28.Nc4 Qc5 29.Nc6 Rc7 30.Ne3

30...Ne5?! The last decent chance was to sacrifice the exchance with Rxe3. 31.R1d5

1-0

 

TNM Games Round 5

Annotations by IM Elliott Winslow

(1) Shaw,Tenzing (2287) - Lee,Andy C (2344) [D16]
Mechanics' Spring TNM: 2000+ San Francisco (5.1), 16.04.2019
[Winslow,Elliott]

1.c4 c6 2.d4 d5 3.Nc3 Nf6 4.Nf3 dxc4 5.a4 Na6 6.e4 Bg4 7.Bxc4 Bxf3 8.Qxf3!? [8.gxf3! is fine. White often castles, plays Kh1 and Rg1, and has pressure on the kingside (f4-f5 as well).] 8...Qxd4 9.Bxa6 bxa6 10.0-0 e5 11.Qe2 Bb4?! [11...a5; 11...Qb6] 12.Qxa6 0-0 [12...Qb6 13.Qc4 0-0] 13.Be3 Qd7 14.Rfd1 [14.f3; 14.Rac1] 14...Qe6 15.f3 Seemingly fine, but White needs to refocus on the queenside. [15.Rdc1+/-] 15...Nd7 16.Qe2 a5 17.Rac1 Nc5 18.Nb5 [18.Na2 Qxa2 19.Bxc5 Bxc5+ 20.Rxc5 Qxa4 21.h3=] 18...Nb3 19.Nc7 Nxc1 20.Rxc1 Qb3 21.Nxa8 Rxa8 22.Bf2 Rd8-/+ 23.Be1 Bxe1 24.Rxe1 Qxa4 Black has turned more active pieces into a pawn, albeit not all that much of one. 25.h3 h6 26.Rc1 Qd4+ 27.Kh2 Rb8?! [27...Rd6; 27...Qb6] 28.Rc2 a4 29.Qa6 Qe3 30.Qxa4 Rd8 31.Qa1 Rd6 32.Qc1 White offers to trade queens... 32...Qxc1 Black accepts... 33.Rxc1 Kf8 34.Rc2 Ke7 35.Kg3 Kd7 36.Kf2 [36.Rc5; 36.h4; 36.Kg4] 36...Rd1 37.Ke3 Kd6 And Black dares White to trade rooks (!) ... 38.Rd2+ And White does! Into a pawn ending! Which is "hopelessly" drawn. But you better know what you're doing! Pawn endings are much steeper a slope than rook endings; that is, it takes a lot less to fall into a loss. 38...Rxd2 39.Kxd2 Kc5 40.Kc3 g5 41.b3 Kb5 42.b4 c5 43.bxc5 Kxc5 44.Kd3 Kb4

45.Ke3?? Kc3 46.g3 [46.Ke2 Kc2! is the key (and only) move. Black either gets through via the eighth rank, or gets his king to e3 when ...g4 (with ...h5 of course) will undermine f3 and e4. 47.Ke3 Kd1 48.Kf2 Kd2 49.g4 f6!] 46...h5 0-1

(2) Tsodikova,Natalya (2185) - Stearman,Josiah P (2387) [B31]
Mechanics' Spring TNM: 2000+ San Francisco (5.2), 16.04.2019
[Winslow,Elliott]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.Bxc6 dxc6 5.d3 Bg7 6.h3 Nf6 7.0-0 Nd7 8.a4 e5 Caruana-Carlsen 2018 certainly didn't hurt the popularity of these lines, for either side. 9.a5 Nf8 10.Be3 Ne6 11.Nbd2 0-0 12.Nc4 Qc7 13.Ng5 Nd4 14.c3 h6 15.Nf3 Ne6 16.Nh2 Rd8 17.Qe2 Nf4 18.Bxf4 Curious that White only permitted this exchange 18...exf4 19.Nf3 Be6 20.Rfd1 Rd7 21.d4 cxd4 22.cxd4 Rad8 23.e5 Bf8 24.Ncd2 Rd5 25.Ne4 Be7 [25...Rxa5!? There is no followup for a knight on f6 But 26.Qd2! Rxa1 27.Rxa1 Be7! 28.Qxf4 Bd5 29.Nh2! h5 30.Nf3=] 26.a6 b6 27.Rdc1 Rc8 28.Qd2 g5 29.Qc2 Kg7 30.Nc3 Rdd8 31.Rd1 Qd7 32.Qe2 Bb3 33.Rd2 [33.d5!?] 33...Qf5?! [33...Bb4; 33...b5] 34.Qe4 [34.d5! Bxd5 35.Nxd5 cxd5 36.Rad1] 34...Kg6 [34...Qxe4! 35.Nxe4 Bb4 36.Nc3 Rd7] 35.Qxf5+ Kxf5 36.g4+ (doesn't help) 36...Ke6 37.Kg2 Bb4 38.h4

38...Bd5? [38...Bxc3 39.bxc3 Bd5-+] 39.Rdd1? Missing a big chance! [39.Nxd5!+/- gets rid of the bishop that matters. And, if Black takes the exchange, then 39...Bxd2 40.Nf6 is problematic for Black.] 39...Bxc3 The air clears, White's knight and king are stymied by one bishop, so Black's extra force can win elsewhere. 40.bxc3 b5 41.h5 c5 42.Rac1 cxd4 43.cxd4 b4 0-1

(3) Diaz,Conrado (2343) - Kondakov,Adrian (2066) [D00]
Mechanics' Spring TNM: 2000+ San Francisco (5.3), 16.04.2019

1.d4 Nf6 2.Bg5 d5 3.Bxf6 exf6 4.e3 Bd6 5.g3 c6 6.Bg2 Nd7 7.Nd2 f5 8.Ne2 Nf6 9.c4 Ne4 10.0-0 0-0 11.cxd5 cxd5 12.Nc3 Qa5 13.Nb3 Nxc3 14.Nxa5 Nxd1 15.Rfxd1 Bb4 16.Nb3 Be6 17.Rac1 Rac8 18.a3 Bd6 19.Na5 Rc7 20.Rxc7 Bxc7 21.Nb3 Bd6 22.Rc1 Rb8 23.Kf1 Kf8 24.Ke2 Ke7 25.Nd2 a6 26.Nb1 Rd8 27.Nc3 Bb8 28.Kd2 Kd6 29.Na4 Ba7 30.b4 b5 31.Nc5 Bxc5 32.dxc5+ Kc6 33.Kc3 f6 34.Rd1 Rd7 35.Rd4 g6 36.Bf3 Ra7 37.Bd1 Bc8 38.Bb3 Rd7 39.f3 Bb7 40.e4 dxe4 41.fxe4 fxe4 42.Rxe4 Kc7 43.Re6 f5 44.Rf6 Re7 45.Rf7 Rxf7 46.Bxf7 g5 47.Kd4 f4 48.gxf4 gxf4 49.Be6 h6 50.Bf5 Bh1 51.Be4 f3 52.Ke3 f2 53.Bd3 Kc6 54.Kxf2 a5 55.Ke3 axb4 56.axb4 Kd5 57.Bxb5 Bg2 58.Be2 Bh3 59.Kd3 Bf5+ 60.Kc3 Be4 61.Bg4 Kc6 62.Kd4 Bg2 63.Be2 Bh3 64.b5+ Kc7 65.Bf3 Bd7 66.b6+ Kb8 67.c6 Bh3 68.Kc5 Kc8 69.Kd6 Kd8 70.Bh5 Bd7 71.c7+ Kc8 72.Bf3 Bc6 73.Bxc6 1-0

(4) Li,Eric Yuhan (2228) - Hakobyan,Sos (1829) [A62]
Mechanics' Spring TNM: 2000+ San Francisco (5.4), 16.04.2019
[Winslow,Elliott]

1.d4 Nf6 2.c4 e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Bg2 Bg7 8.Nf3 0-0 9.0-0 a6 10.a4 Re8 11.Bf4 b6 [11...Ne4; 11...Nh5; 11...h6!? was Kramnik's move; 11...Nbd7!? What? 12.Bxd6 Qb6 13.Bf4 Qxb2 is probably just trouble, but in practice it's done well.] 12.Nd2 Nh5 13.Nc4 [13.Be3 Nd7 (13...Rxe3?!) 14.g4 Nhf6 15.h3 Ne5] 13...Nxf4 14.gxf4 f5?! [14...Ra7 15.Ne4 Bf8 16.Qb3 Rb7] 15.Qb3 Bxc3 16.bxc3 Nd7 17.Nxd6 Rxe2 18.Rae1 Rxe1 19.Rxe1 Nf6 20.Nc4 Rb8 21.d6 b5 22.Ne5+ c4 23.Nxc4 Ne4 24.Ne5+ Kg7 25.Qf7+ Kh6 26.Re3 Nxf2 27.Kxf2 Qh4+ 28.Kg1 bxa4 29.Qf8+ Kh5 30.Bf3+ 1-0

(5) Wolff,Patrick (2623) - Heredia,Carla (2291) [A03]
Mechanics' Spring TNM: 2000+ San Francisco (5.5), 16.04.2019
[Winslow,Elliott]

1.g3 d5 2.Bg2 Nf6 3.f4 e6 4.Nf3 Be7 5.0-0 0-0 6.d3 b6 7.Qe1 Nbd7 8.Nc3 Bb7 9.Kh1 Nc5 10.Be3 Na6 11.Bg1 Nb4 12.Rc1 c5 13.a3 Nc6 14.e4 dxe4 15.dxe4 Ba6 16.Rf2 Qc7 17.e5 Ng4 18.Rd2 h5 19.a4 Na5 20.Nb5 Bxb5 21.axb5 Rad8 22.Qe2 Nh6 23.Re1 Nf5 24.Bf2 g6 25.Kg1 Rxd2 26.Qxd2 Rd8 27.Qc3 Qd7 28.Bf1 c4 29.Bxc4 Rc8 30.Qd3 Qc7 31.Ba2 Qxc2 32.Qe2 Bb4 33.Qxc2 Rxc2 34.Rd1 Rxb2 35.Bb1 Bc5 36.Bxc5 bxc5 37.Bxf5 gxf5 38.Ng5 c4 39.Rd8+ Kg7 40.Rd7 c3 41.Nxe6+ Kg8 42.Rd8+ Kh7 43.Rd7 Kg8 44.Rd8+ Kh7 45.Rd7 c2 46.Rxf7+ Kg8 47.Rf8+ Kh7 48.Rf7+ Kg8 49.Rf8+ 1/2-1/2

(6) Wong,Russell (2200) - Chambers,Ezra (2336) [A17]
Mechanics' Spring TNM: 2000+ San Francisco (5.6), 16.04.2019

1.c4 Nc6 2.Nc3 Nf6 3.g3 e6 4.Bg2 Bb4 5.a3 Bxc3 6.dxc3 0-0 7.Nf3 e5 8.0-0 d6 9.a4 a5 10.Qc2 Be6 11.b3 h6 12.Rd1 Nd7 13.Ba3 Qe7 14.Nh4 Qf6 15.Rd2 g5 16.Nf3 Qe7 17.Ne1 f5 18.Bd5 Kg7 19.Rad1 Bxd5 20.Rxd5 b6 21.Ng2 f4 22.Bxd6 cxd6 23.Rxd6 Nf6 24.Rxc6 Rad8 25.Rxd8 Rxd8 26.Ne1 e4 27.Kg2 e3 28.Nf3 exf2 29.Nd4 Rxd4 30.cxd4 Qd7 31.Rxf6 Kxf6 32.Qe4 Qh3+ 33.Kxh3 f1Q+ 0-1

(7) Davila,Carlos (2075) - Winslow,Elliott C (2306) [A86]
Mechanics' Spring TNM: 2000+ San Francisco (5.7), 16.04.2019

1.c4 g6 2.Nc3 Bg7 3.g3 d6 4.Bg2 f5 5.e3 Nf6 6.Nge2 0-0 7.0-0 e5 8.d4 Nbd7 9.b4 Kh8 10.Bb2 a6 11.Qb3 c6 12.a4 Re8 13.Rad1 e4 14.d5 c5 15.Nf4 cxb4 16.Ne6 Nc5 17.Qxb4 Bxe6 18.dxe6 Rxe6 19.Nd5 Nxd5 20.Bxg7+ Kxg7 21.Rxd5 Rc8 22.Rfd1 Qe7 23.Bf1 h5 24.h4 Rc6 25.a5 Kf7 26.Be2 Re5 27.Rxe5 Qxe5 28.Rd5 Qf6 29.Qb1 Kg7 30.Kg2 Kh7 31.f3 Qe7 32.f4 Kh6 33.Qd1 Qf6 34.g4 hxg4 35.Kg3 Qc3 36.Qg1 Nd7 37.Kf2 Nf6 38.Rd4 Qxa5 39.h5 Nxh5 40.Qb1 Qd8 41.Qh1 Qf6 42.Kg2 Kg7 43.Qe1 Nxf4+ 44.exf4 Qxd4 45.Qb4 Rb6 46.Qa4 Rb2 47.Qd7+ Kh6 0-1

(8) Talamantez,Abel (1800) - Uzzaman,Ashik (1931) [A85]
Mechanics' Spring TNM: 2000+ San Francisco (5.9), 16.04.2019

1.d4 e6 2.c4 f5 3.Nc3 Nf6 4.Nf3 d6 5.Qc2 Nc6 6.a3 e5 7.dxe5 dxe5 8.Bg5 Be6 9.Rd1 Qe7 10.Nd5 Qf7 11.Bxf6 gxf6 12.Qb3 0-0-0 13.e3 Bh6 14.Be2 e4 15.Nd4 Bxd5 16.cxd5 Qxd5 17.Bc4 Qa5+ 18.Ke2 Nxd4+ 19.exd4 Kb8 20.d5 f4 21.Rd4 f5 22.Rhd1 Bg7 23.R4d2 Rd6 24.Qa2 Re8 25.b4 Qb6 26.a4 Qxb4 27.Rb1 Qc3 28.Rc2 f3+ 29.Kf1 fxg2+ 30.Kg1 Qh3 31.Rb3 e3 32.Rxe3 Rxe3 33.fxe3 Qxe3+ 34.Kxg2 Rg6+ 0-1

(9) Childress,Jason (2058) - Ricard,Bruce (1892) [B18]
Mechanics' Spring TNM: 2000+ San Francisco (5.10), 16.04.2019

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.f4 e6 7.Nf3 Nd7 8.Bd3 Bxd3 9.Qxd3 Ngf6 10.0-0 Be7 11.f5 exf5 12.Nxf5 0-0 13.Kh1 Re8 14.c3 Bf8 15.Bg5 h6 16.Bh4 g6 17.Ne3 Qa5 18.Bxf6 Nxf6 19.Ne5 Bg7 20.Rf3 Nd5 21.N3c4 Qa6 22.Nxf7 c5 23.dxc5 Ne7 24.Nfd6 Rad8 25.Qe4 1-0

(10) Marcus,Joel (1833) - Askin,David (2013) [B13]
Mechanics' Spring TNM: 2000+ San Francisco (5.11), 16.04.2019
[Winslow,Elliott]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Nf6 6.Nf3 [6.Bf4 Everyone knows the proverb "Bishops before knights!"] 6...g6 7.0-0 Bf5 8.Re1 Bg7 9.Bxf5 gxf5 10.Qd3 Ne4 11.Ne5? [11.Bf4; 11.Be3] 11...Bxe5 12.dxe5 Nxe5 13.Qh3 [13.Qb5+ Qd7] 13...Ng4!? [13...e6 14.f3? Nd3-+; 13...Qb6!? 14.Be3 Qxb2] 14.Be3 [14.f3?? Qb6+ 15.Be3 Nxe3] 14...Nxe3 15.Qxe3 e6 16.Na3 Qg5 17.Nb5 Qxe3 18.Rxe3 0-0 19.Rd1 a6 20.Nd4 Rfd8 21.Rh3 Rac8 22.Rdd3 Rd6 23.Rh6 Kg7 24.Rdh3 Nf6 25.f3 Rb6 26.g4

26...Rxb2! 27.g5 Rxc3 28.gxf6+ Kf8 29.Nb3 Rd3 30.Nd2 Rdxd2 0-1

(11) Anderson,Michael (1943) - Jensen,Christian (1815) [B21]
Mechanics' Spring TNM: 2000+ San Francisco (5.12), 16.04.2019

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 g6 6.Bc4 Bg7 7.e5 Nh6 8.0-0 0-0 9.Bf4 Nf5 10.g4 Nh6 11.h3 Kh8 12.Qd2 Ng8 13.Nd5 d6 14.exd6 exd6 15.Rfe1 Be6 16.Rad1 Rc8 17.b3 Na5 18.Qb4 Rc5 19.Be3 Bxd5 20.Rxd5 Rxd5 21.Bxd5 b6 22.Ng5 Qd7 23.Rc1 Nf6 24.Bg2 h6 25.Ne4 Nxe4 26.Qxe4 Re8 27.Qf3 Re7 28.b4 Nb7 1/2-1/2

(12) Askin,Michael (1941) - Boldi,Ethan Kazanjian (2058) [E04]
Mechanics' Spring TNM: 2000+ San Francisco (5.13), 16.04.2019
[Winslow,Elliott]

1.d4 e6 2.Nf3 Nf6 3.c4 d5 4.g3 dxc4 5.Bg2 c5 6.0-0 Nc6 7.Ne5 [7.Qa4 Bd7!? (7...cxd4 8.Nxd4 Qxd4 9.Bxc6+ Bd7 10.Rd1 Qxd1+ is a famous queen sacrifice, putting a big onus on *Black* though.) 8.Qxc4 (8.dxc5 Na5 (8...Rc8!?) 9.Qc2 Bxc5 10.Bg5 h6 11.Bd2 0-0 12.Ne5 Bb5 13.Bxa5 Qxa5 14.Bxb7 Rab8 15.Bc6 Rfc8 16.Bxb5 Qxb5 17.Nxc4 Bxf2+ 18.Rxf2 Rxc4 19.Qd1 Qc5 20.Nd2 Ng4 0-1 Bogner,H (2230)-Winslow,E (2375) US Open, Pasadena 1983) 8...b5!? is the Catalan going bonkers; 7.Na3!? cxd4 8.Nxc4 Bc5 9.b3!? 1/2-1/2 (31) Carlsen,M (2874)-Anand,V (2770) London 2017 CBM 182 [Yermolinsky,A]] 7...Nxe5?! [7...Bd7!?] 8.dxe5 Qxd1?! 9.Rxd1 Nd7?! [9...Nd5 10.Na3 (10.Nc3!?) 10...c3!] 10.f4 Obvious and good, [but 10.Na3! Nxe5 (10...Rb8 11.Nxc4) 11.Bf4+/- (11.Nb5+/-) ] 10...Be7 [10...Rb8 11.a4 g5 12.Na3 gxf4 13.Bxf4 Nb6 14.a5+/= Nd5 15.Nxc4 Nxf4 16.gxf4 Rg8 17.Kf2 Bd7 18.Rac1 f6? (18...Bb5) 19.exf6 Ba4

20.Ne5! Rxg2+ 21.Kxg2 Bxd1 22.Rxd1 Rd8 23.f7+ Ke7 24.a6 Rb8 25.Rd7+ Kf6 26.axb7 Bh6 27.Nc6 Bxf4 28.Nxb8 1-0 Yukhtman,Jacob-Nikolaevsky,Y, UKR-ch35, Kiev 1966 (anonymous notes in Mega). Not long after this the player of White moved to New York, where his legend only grew.] 11.Na3 Nb6 12.Be3 0-0 13.Rac1 Rb8 14.Nxc4 Nxc4 15.Rxc4 b6 16.Rc2 a5 17.Rcd2 a4 18.Kf2 c4 19.Bc6 Bb4 20.Rc2 Ba6 21.a3 Ba5 22.Rd6 b5 23.Rc1 Bc7 24.Rd7 Bb6 [24...Rbc8!? 25.Be4+/-] 25.Rcd1 Bc8 26.Re7! Bd8?! [26...Bxe3+ 27.Kxe3 b4 28.Bxa4+-] 27.Re8?! [27.Ra7!+-] 27...Rxe8 28.Bxe8 Be7 29.Bc6 Ba6?! [29...Bb7! 30.Bxb5 Be4 31.Bxc4 Rxb2 32.Rd7 Rb7+/-] 30.Rd7+- Bf8 31.Ra7 Bc8 32.Be8 f6 33.exf6 gxf6 34.Bc6 Bg7 35.Bc5 f5 36.e3?! [36.Rc7! Bxb2 (36...Ba6 37.Bd7 Bxb2 38.Bxe6+ Kh8 39.Bxf5+-) 37.Ba7] 36...Bxb2 37.Bd6?? [37.Ke1! Really Stockfish? The only move, but it wins?? 37...Bg7 38.Kd2 Bf8 39.Bxf8 Kxf8 40.Kc3 with a winning bind!] 37...Rb6 38.Rc7

Here the last scoresheet ends. It was a massive scramble, ending an inevitable bare kings. [But at this point Black could WIN, with 38.Rc7 Bb7!!-+] 1-0

(13) Gaffagan,Steven (2019) - Argo,Guy (1909) [A92]
Mechanics' Spring TNM: 2000+ San Francisco (5.14), 16.04.2019
[Winslow,Elliott]

1.Nf3 f5 2.g3 Nf6 3.Bg2 d6 4.d4 e6 5.c4 Be7 6.Nc3 Ne4 7.Qc2 Nxc3 8.Qxc3 [8.bxc3!?] 8...Bf6 9.Qc2 e5 10.dxe5 dxe5 11.Be3 Qe7 12.Rd1 Nc6 13.0-0 0-0 14.b3 Re8 15.Qc1 a5 16.c5 h6 17.Rfe1 g5 18.Qc2 Bg7 19.h3 Be6 20.Bc1 e4 21.Nh2 Nb4 22.Qb1 Qxc5 23.Bb2 Qc2 24.Bxg7 Kxg7 25.Qa1+ Kg6 26.g4 Qxa2 27.Qe5 Nc6 28.Qxc7 Re7 29.gxf5+ Bxf5 30.Rd6+ Kg7 31.Qb6 a4 32.Qc5 Ra5 33.Qc3+ Rae5 34.bxa4 Kh7 35.Nf1 Qxa4 36.Ra1 Qb5 37.Ne3 Qc5 38.Qd2 Bg6 39.Rc1 Qb4 (The next four moves are unreadable, after which the score ends altogether. Drawn after a time scramble.) 1/2-1/2

(14) Kuczek,Kevin W (2003) - Persidsky,Andre (1814) [B23]
Mechanics' Spring TNM: 2000+ San Francisco (5.15), 16.04.2019
[Winslow,Elliott]

1.e4 c5 2.Nc3 e5!? 3.Bc4 Nc6 4.d3 Nf6 5.a3 Be7 6.f4 0-0 7.Nf3 d6 8.0-0 a6 9.Nd5 b5 10.Ba2 Be6 11.fxe5 dxe5 12.Nxf6+ Bxf6 13.Bxe6 fxe6 14.Be3 Qe7 15.Qd2 Nd4 16.Rad1 Rac8 17.c3 Nxf3+ 18.Rxf3 Rfd8 19.Qf2 Bh4 20.g3 Bg5 21.Qe2 Bxe3+ 22.Qxe3 Rf8 23.Rdf1 Rxf3 24.Rxf3 Rd8 25.Rf2 h6 26.Kg2 Qd6 27.Rd2 c4 28.d4 Qb6 29.Kf2? [29.Qf2 exd4 30.cxd4=] 29...exd4 30.cxd4 [30.Rxd4 Rf8+ 31.Kg2 e5 32.Rd3 Qxe3 33.Rxe3 Rd8=/+] 30...e5? [30...a5; 30...Rf8+ 31.Ke2 a5] 31.d5 Rf8+ 32.Ke2 Qf6 33.Kd1? [33.Rd1=] 33...Qd6? [33...Qf1+! 34.Kc2 (34.Qe1 c3! 35.bxc3 Qc4-/+) 34...Rf3 35.Qe2 Qxe2 36.Rxe2 Kf7-/+] 34.Rf2= Rc8 35.Qa7 Qg6 [35...c3! 36.b4 Qg6=] 36.Qe3 a5 37.Qf3 Qd6 38.Qf7+ Kh8 39.Qb7? [39.Qe6; 39.Qf5] 39...Qc5 40.Rd2?? [40.Ke1; 40.Ke2] 40...c3 [40...Rf8!] 41.bxc3 Qxc3 [41...Rf8!] 42.Qxb5 Qf3+ 43.Re2 [43.Qe2 Qh1+ 44.Qe1 Rc1+] 43...Qf1+ 44.Kd2 White resigned [44.Re1 Qxb5; 44.Kd2 Qc1+ 45.Kd3 Qc3#] 0-1

(15) Uribe,Luiz Antoni (1863) - Walder,NM Michael (1989) [B23]
Mechanics' Spring TNM: 2000+ San Francisco (5.16), 16.04.2019
[Winslow,Elliott]

1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Bb5 Nd4 6.Bd3 d6 7.Nxd4 cxd4 8.Ne2 Nf6 9.c3 e5 10.cxd4 exd4 11.Nxd4 0-0 12.Nf3 Re8 13.0-0 Nxe4 14.Bxe4 Rxe4 15.Qb3 Qe7 16.d4 Bg4 17.Bd2 Bxf3 18.Rxf3 Bxd4+ 19.Kh1 Re8 20.f5 Re2 21.fxg6 hxg6 22.Raf1

22...Rf2 23.Bg5 Rxf1+ 24.Rxf1 Qe6 25.Qxb7 Qf5 26.Qf3 Qxf3 27.gxf3 Bxb2 28.Rd1 Re6 29.Kg2 Bf6 30.Bf4 Be5 31.Bxe5 Rxe5 32.Rxd6 Re2+ 33.Kg3 Rxa2 34.h4 a5 35.Ra6 Kg7 36.Kf4 Kh6 37.Rf6 Ra4+ 38.Kg3 Kg7 39.Ra6 f6 40.Ra7+ Kh6 41.Rf7 f5 42.Ra7 Ra1 43.Ra8 Kg7 44.Ra7+ Kf6 45.Ra6+ Ke5 46.f4+ Kd5 47.Kf2 Ke4 48.Rxg6 Kxf4 49.h5 (A time scramble ensued, in which White was unable to bang out the Philidor defense without thinking and lost. 0-1

(16) Poling,Scott E (1863) - Melville,Cailen J (1941) [A40]
Mechanics' Spring TNM: 2000+ San Francisco (5.17), 16.04.2019

1.d4 e6 2.c4 b6 3.Nf3 Bb7 4.Nc3 Bb4 5.Bg5 f6 6.Bd2 f5 7.a3 Bxc3 8.Bxc3 Nf6 9.e3 Qe7 10.Be2 Ne4 11.Qc2 d6 12.Rd1 Nd7 13.b4 g5 14.c5 g4 15.cxd6 cxd6 16.Nd2 Rc8 17.Nxe4 Bxe4 18.Qb2 Bxg2 19.Rg1 Bd5 20.Ba6 Rc7 21.Rc1 Qh4 22.Bd2 Rxc1+ 23.Qxc1 0-0 24.Qc7 Qxh2 25.Rg3 Nf6 26.Qxd6 Qh1+ 27.Bf1 Bc4 0-1

(17) Lehman,Clarence E (1918) - Rudyak,Felix (1865) [B20]
Mechanics' Spring TNM: 2000+ San Francisco (5.18), 16.04.2019
[Winslow,Elliott]

1.e4 c5 2.b4 cxb4 3.a3 e5 4.axb4 Bxb4 5.c3 Ba5 6.Nf3 Nc6 7.Bc4 Nf6 8.d3 h6 9.0-0 0-0 10.Ba3 d6 11.Qb3 Bb6 12.Qc2 Bg4 13.Nbd2 Rc8 14.h3 Bh5 15.Qb3?? Hard to believe this was played! Yet both scoresheets clearly give it. 15...Qc7? [15...Na5 16.Qd1 Nxc4 17.Nxc4 Nxe4; 15...Bxf3 16.Nxf3 (16.gxf3 Nh5) ] 16.Nh4 Kh7 17.Nf5 Rfd8 18.Rac1 Bc5 19.d4? Bxa3? [19...Na5-+ Okay, something is really wrong with the scores!] 20.Qxa3 Qa5 21.Qb2 Qc7 22.g4 Bg6 23.Ng3 d5 24.Bd3 dxe4 25.Ndxe4 Nd5 26.Nc5 b6 27.Bxg6+ fxg6 28.Ne6 Qe7 29.Nxd8 Rxd8 30.Ne2 Qh4 31.Kh2 Rf8 32.Ng1 Nf4 33.Qd2

33...Nxh3! 34.Qe3 Nxf2+ 35.Kg2 Qh1+ 36.Kg3 Ne4+ 37.Qxe4 Qxe4 38.Rxf8 Qe3+ 0-1

(18) Clemens,Kristian (1946) - Maser,Thomas (1901) [D41]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.19), 16.04.2019
[Winslow,Elliott]

1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.d4 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 cxd4 8.cxd4 Nc6 Some of the recent methods involve this knight on d7, not blocking a bishop on b7. 9.Bc4 Bb4+ 10.Bd2 Qa5? [10...Bxd2+ 11.Qxd2 0-0 12.0-0] 11.Rb1 Bxd2+ 12.Qxd2 Qh5? Going rather against the grain -- there's no target over there, unless it's the queen itself. And, the time is wrong. 13.0-0? The moment passes. [13.d5! catches Black's king in the center 13...exd5 (13...Ne5 14.Bb5+) 14.exd5 Ne5 (14...0-0!? -- maybe it's White's king instead!? -- 15.dxc6 Bh3!? 16.Qg5 oof) 15.Bb5+ Kf8 (15...Ke7? 16.Qb4+ Kf6 17.Qd6+; 15...Bd7 16.Bxd7+ Nxd7 17.Qe3+ Kf8 18.0-0) 16.Nd4 a6 (16...Ng4 17.h3 Qe5+ 18.Be2) 17.Ba4 (! - I would have thought to attack the queen, but Fish 10 prefers to cause trouble on the queenside and e8) 17...Ng4!? is quite an attempt to annoy White, against which you'd expect a crushing continuation but no. 18.Nf3 (18.Qb4+ Kg8 19.Qd6 Qe5+ 20.Qxe5 Nxe5 21.0-0+/-; 18.Rb6!?; 18.f3!?) 18...Ne5 19.Qb4+ Kg8 20.Rb3 Nxf3+ 21.Rxf3 Qxd5 22.0-0 Be6 23.Bb3 Qb5 Black keeps resisting!] 13...0-0 14.Rfd1 [14.Rb5! Qh6!? 15.Qxh6 gxh6+/-] 14...b6 15.Bb5?! Bb7 16.Qe2 Ne7

Black has put much of his house in order. 17.Rbc1? Ng6? [17...Bxe4!-+ Loose pawn!] 18.Bc6 Nf4? [18...Bxc6 19.Rxc6 Rac8=] 19.Qe3 Qg4 20.g3 Bxc6 21.Rxc6 Nh3+ 22.Kg2 h6 23.Rd3 Ng5 24.Nxg5 Qxg5 25.Qxg5 hxg5

26.Kf3 White brazenly marches up and takes the g-pawn! [26.d5!? Passed pawn?] 26...Rfd8 (both scoresheets say "Rd8") 27.Kg4 Loose pawn indeed! 27...Rd7 28.Kxg5 Rad8 (now they both say "Rad8") 29.Rc4 b5 30.Rb4 a6 [30...a5 31.Rxb5 Rxd4 32.Rxd4 Rxd4 33.e5! (33.Rxa5 Rxe4 could well be "technical difficulties") 33...Rd2 34.f4 Rxa2 35.Rb8+ Kh7 36.Rf8 Rxh2 (36...f6+ 37.exf6 gxf6+ 38.Rxf6 Rxh2 39.Rxe6) 37.Rxf7 is close or past the tipping point -- a pawn will go leaving White still with a threatening position] 31.Kf4 [Here Stockfish the Tenth adamantly tries 31.a4 bxa4 (31...a5 32.Rxb5 Rxd4 33.Rxd4 Rxd4 34.Rxa5 Rxe4 this again) 32.Rxa4 Rd6 (or any rook move, really) 33.f4] 31...Rc8 32.Ke3 Rc2 [32...f5!?] 33.a4 bxa4 34.Rxa4 Rd6 35.Rda3 [35.h4!] 35...Rb6 36.Ra2 [36.h4!] 36...Rb3+ 37.Kf4 Rcc3 38.Rxa6 Rd3 39.R6a4 [39.Rd6! Rb4 40.Ke5] 39...f6 [39...Kh7] 40.Re2 g5+ 41.Kg4 Kf7 42.h4 [42.Kh5!] 42...Kg6 43.hxg5 f5+ [43...fxg5 44.Ra6] 44.exf5+ exf5+ 45.Kh4 Rb6 46.f4 Rd1 47.Kh3 Rbb1 48.Ra6+ Kg7 49.Ra7+ Kg6 50.Re6+ 1-0

(19) Busch,Jonah M (1826) - Gray,William (1962) [B22]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.20), 16.04.2019
[Winslow,Elliott]

1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 e5 5.Be3 cxd4 6.cxd4 Nc6 7.Nc3 Bb4 8.dxe5 Qa5 9.Bd2 Nge7 10.a3 Qxe5+ 11.Be2 Bc5 12.Nf3 Qf5 13.0-0 0-0 14.b4 Bb6 15.Na4 Bc7 16.Rc1 Bd6 17.Nc5 Rd8 18.Nh4 Qe5 19.g3 Nd4 20.Bc4 Bxc5 21.Re1 Qf6 22.bxc5 Ng6 23.Nxg6 Nf3+?

Sometimes we get too clever 24.Kg2? [24.Qxf3!! Qxf3 25.Ne5 Qf6 26.Nxf7 when Black has no better than to give back the queen: 26...Qxf7 (26...Rf8 27.Bc3) 27.Bxf7+ Kxf7 28.Bg5 with the classic "I have an extra pawn" "but I have opposite colored bishops" "but there are rooks on the board"] 24...hxg6-+ 25.Re2 Bg4 [25...Qc6!] 26.Qb3?! Nxd2 [26...Qc6!] 27.Rxd2 Rxd2 28.Rf1 Rad8 [28...Qc6+!] 29.Qxb7 Qf5 30.c6 Qe4+ 31.Kg1 Qxc4 32.c7 Rc8 0-1

(20) Newey,Richard (1620) - Ochoa,Jason B (1738) [B22]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.21), 16.04.2019
[Winslow,Elliott]

1.e4 c5 2.d4 cxd4 3.c3 "The only way to refute a gambit is to accept it" is RUBBISH. The only thing you can be sure of (well, your opponent could be bluffing!) is: they want you to take it. And so: 3...Nf6! 4.e5 Nd5 5.cxd4 Nc6 [5...d6] 6.Bc4 Nb6 7.Bb3 d6 [7...d5!? thwarts White's next move, if there is any reason to; 7...g6!?] 8.e6!? f6?? [8...Bxe6?? Obviously losing a piece to 9.d5 Nxd5 10.Bxd5 Bxd5 11.Qxd5 e6 12.Qb3 . But SF makes it "only" lost, not "really really" lost like the text.; 8...fxe6! shows White doing okay, about even with the bad Black defenses thrown in, better even if you notice that 9.Nh3!? is 2-0 (while 9.Nf3 has done quite badly against 9...g6!) ] 9.d5 pretty much game over! 9...Ne5 10.Nc3 Qc7 11.Nf3 Nec4 12.0-0 g6 13.Qd3 Bg7 14.Bc2 0-0 15.h4 Ne5 16.Nxe5 dxe5 17.Be3 f5 18.Nb5 Qd8 19.Rad1 e4 20.Qb3 f4 21.Bc5 e3 22.fxe3 fxe3 23.Rxf8+ Qxf8 24.Rf1 Bf6 25.Bxe3 Qg7 26.d6 Kh8 27.Bg5 Bd4+ 28.Kh1 Bd7 29.dxe7 Bc6 30.Nxd4 1-0

(21) Bradley,Christopher (1604) - Perlov,Alexander (1720) [A09]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.22), 16.04.2019
[Winslow,Elliott]

1.Nf3 d5 2.c4 d4 3.g3 c5 4.b4 cxb4 5.a3 bxa3 6.Bxa3 Nc6 7.d3 Nf6 8.Bg2 e5 9.Bxf8 Kxf8 10.0-0 g6 11.Nbd2 Kg7 12.Qb3 Qc7 13.Rfb1 Re8 14.Ng5 h6 15.Nge4 Nxe4 16.Nxe4 f5 17.Nc5 Re7

18.Qd1 [18.Nxb7! Bxb7 (18...Rb8 19.Bxc6 Qxc6 20.Na5 Rxb3 (20...Qb6 21.Qa2) 21.Nxc6 Rxb1+ 22.Rxb1 Rb7 23.Rxb7+ Bxb7 24.Nxa7) 19.Qxb7 Qxb7 20.Rxb7 Rxb7 21.Bxc6 Rab8 22.Bxb7 Rxb7 23.f3+/-] 18...Nd8 19.Nb3 [19.Na6!?] 19...a6 [19...Bd7=/+] 20.Qd2 Ne6 21.Qa5?! Qxa5? [21...b6! 22.Qa3 Ra7 digging out] 22.Nxa5 Nc5 23.Nb3 Nxb3 24.Rxb3 e4 25.Ra5 Be6 26.Rb6 Rc8 27.Rd6 exd3 28.exd3 Bxc4 29.dxc4 Re1+ 30.Bf1 Rxc4 31.Kg2 Rcc1 32.Bd3 Red1 33.Rxd4 Rc3 34.Rd7+ Kf6 35.Bxf5 Rxd7 36.Bxd7 Rc7 37.Bg4 Rc4 38.Be2 Rb4 39.Bxa6 bxa6 40.Rxa6+ Kf5 41.h3 h5 42.Ra5+ Kf6 43.Rd5 Rb3 44.g4 hxg4 45.hxg4 g5 46.f3 Kg6 47.Rd4 Kf6 48.Re4 Ra3 49.Kf2 Rb3 50.Re3 Rb2+ 51.Kg3 Rb1 52.Rc3 Rg1+ 53.Kf2 Rb1 54.Rc6+ Ke5 55.Rg6 Kf4 56.Rf6+ Ke5 57.Rf5+ Ke6 58.Rxg5 Kf6 59.Rc5 Rb3 60.f4 Ke6 61.Re5+ Kf6 62.Re3 Rb4 63.Kf3 Ra4 64.g5+ Kf5 65.Re5+ Kg6 66.Kg4 Rb4 67.Re6+ Kf7 68.Rf6+ Kg7 69.Rc6 Ra4 70.Rf6 Rb4 71.Kh5 Rb1 72.f5 Rh1+ 73.Kg4 Rg1+ 74.Kf4 Rf1+ 75.Ke4 Re1+ 76.Kd5 Rg1 77.Rg6+ Kf7 78.Kc6 Re1 79.Rd6 Rf1 80.g6+ Kg7 81.Rd7+ Kf6 82.Rf7+ Ke5 83.g7 Rg1 84.f6 Ke6 85.Rf8 1-0

(22) Babb,Kevin (1641) - Cortinas,Martin A (1686) [A88]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.23), 16.04.2019
[Winslow,Elliott]

1.d4 f5 2.c4 Nf6 3.Nc3 d6 4.Nf3 g6 5.g3 Bg7 6.Bg2 0-0 7.0-0 c6 8.Re1 Ne4 9.Qb3 Nxc3 10.Qxc3 Nd7 11.e3 e5 12.dxe5 dxe5 13.Qc2 Qe7 14.Bd2 Nf6 15.Rad1 Ne4 16.Bc1 Be6 17.b3 Rae8 18.Bb2 Bc8 19.Nd2 Nf6 20.a3 Qc7 21.b4 Be6 22.Nb3 b6 23.Rd2 Rd8 24.Red1 Rxd2 25.Rxd2 Rc8 26.Nc1 c5 27.b5? [27.bxc5 Qxc5 28.Nd3 Qxc4 29.Qxc4 Bxc4 30.Nxe5=] 27...e4-/+ 28.Bf1 Rd8 29.Ne2 I thought this would be a big blunder, but Black is quite well off anyway. He can pile up on c4 with Be6, Qf7, Ne5 (after trading dark-square bishops), and coupled with some discomfort on the kingside (f3!) and the meek White bishop, it's a clear advantage. But now... 29...Rxd2 30.Qxd2 Bxc4-/+ 31.Nf4 Bf7?! [31...Bb3 32.Bxf6 Bxf6 33.Nd5 Qf7 leaving same-colored bishops, but more importantly this useful square for the queen] 32.a4? [32.Bxf6 Bxf6 33.Nd5 Qd8 34.Nxf6+ Qxf6 35.Qd7=] 32...Qd7-+ 33.Qc2 Qd6?! [33...g5] 34.Bc3 [34.Bc4!-/+] 34...Ng4-+ 35.Be1 Ne5 36.Kg2 g5 37.Nh3 h6 [37...Nf3!] 38.a5 Nf3 39.Bc3 Bxc3 [39...c4; 39...Qd5] 40.Qxc3 Qe5 [40...Qd1] 41.Qa3 c4 42.axb6 axb6 43.Qa8+ [43.Ng1] 43...Kg7 44.Qc6 Qc5? [44...c3] 45.Qxc5 bxc5 46.Ng1? [46.b6 c3 47.b7 c2 48.b8Q c1Q 49.Ng1 Ne1+ 50.Kh1 Nd3 51.Bxd3 exd3 52.Qe5+ Kg8 53.Qb8+ Kh7 54.Qe5 d2 55.Qxf5+ Kg8 56.Qc8+ Kg7-+ (boy is that annoying)] 46...Nxg1?? [46...c3 47.Ne2 c2 48.Nc1 Bd5 49.Be2 Nd2 50.Bh5 Nb3 51.Na2 Kf6] 47.b6= Bd5 [47...c3=] 48.Bxc4 Bb7 49.Kxg1 Kf6 50.Kf1 Ke5 51.Ke2 f4?! 52.Kd2?! fxg3 53.fxg3 Kd6 54.Bb5 Kd5? [54...Bc6; 54...Ba8; 54...Bd5] 55.Kc3+/- c4 56.Bxc4+ Kc5+- (The players stopped writing at move 51 or 52, the last few moves remembered by Cortinas; but now the scramble, and White won.) 1-0

(23) Lamstein,Joshua D (1655) - Cohee,James (1606) [D13]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.24), 16.04.2019
[Winslow,Elliott]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6 5.cxd5 cxd5 6.g3 Nc6 7.Bg2 e6 8.0-0 Bd6 9.Re1 0-0 10.a3 Re8 11.e4 dxe4 12.Nxe4 Nxe4 13.Rxe4 Ne7 14.Re1 Nd5 15.h4 h6 16.Ne5 Bd7

17.Bxh6? Bxe5! 18.dxe5 gxh6 19.Qh5 f5?? [19...Qe7 20.Qxh6 Qf8-+] 20.Qg6+ Kf8 21.Qxh6+ Kg8 [21...Kf7 22.Qh7+ Kf8 23.Bf3] 22.Rad1?= [22.Qg6+ Kh8 23.Bxd5 exd5 24.e6 Bc6 25.Qh5+ Kg7 26.Qf7+ Kh8 27.e7] 22...Bc6= Just like that! Attack no more. Lucky ("There's no luck in chess!") to draw. 23.Qg6+ Kh8 24.Qh5+? Kg7-+ 25.Qg5+? Qxg5 26.hxg5 Rad8 [26...f4!] 27.f4 Rd7 28.Kf2 Red8 29.Bf3 Ne7 30.Rxd7 Rxd7 31.Rd1 Rxd1 [31...Bd5!] 32.Bxd1 Bd5 33.a4 a5 34.Ke3 Nc6 35.Kd3 b6 36.Ke3 Nb4 37.Kd4 Nc6+ 38.Kc3 Ne7 39.Kd4 Nc6+?? 40.Kc3-+ three-fold repetition 1/2-1/2

(24) Krasnov,Steven Le (1876) - Mays,Jerry L (1700) [B38]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.25), 16.04.2019
[Winslow,Elliott]

1.Nf3 g6 2.e4 Bg7 3.d4 d6 4.c4 c5 5.Nc3 cxd4 6.Nxd4 Nc6 7.Be3 Nf6 8.Be2 0-0 9.f3 Nd7 10.Qd2 Qa5 11.0-0 Nc5 12.Rab1 Na6 13.a3 Nc7 14.Nxc6 bxc6 15.Nd5 Qxd2 16.Nxe7+ Kh8 17.Bxd2 Bd7 18.Bb4 Bd4+ 19.Kh1 c5 20.Bd2 Rfe8 21.Nd5 Nxd5 22.cxd5 f5 23.Bd3 Rab8 24.b4 Bb5 25.Bxb5 Rxb5 26.bxc5 Rxb1 27.Rxb1 Bxc5 28.exf5 Bxa3 29.fxg6 hxg6 30.Bc3+ Kg8 31.h4 Rc8 32.Rb3 Bc1 33.Bd4 Rc4 34.Rb8+ Kf7 35.Rb7+ Ke8 36.Bxa7 Rxh4+ 37.Kg1 Rh5 38.Rb5 Ba3 39.Kf2 Kd7 40.g4 Re5 41.Bd4 Rg5?? 42.Bf6 Rxd5 43.Rxd5 Ke6 44.Rd3 1-0

(25) Lesquillier,Walter (1752) - Robeal,Rafik (1716) [B19]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.26), 16.04.2019
[Winslow,Elliott]

1.e4 c6 2.Nc3 d5 3.d4 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nf3 Nd7 7.h4 h6 8.Bd3 [8.h5 Bh7 9.Bd3] 8...Bxd3 9.Qxd3 e6 10.Bf4 Qa5+ 11.c3 Ngf6 12.b4?! [12.a4!?] 12...Qa3 13.0-0 Nd5 14.Bd2 Bd6 15.Qc2 a5??

16.Ne4 Bc7 17.Bc1 Nxb4 18.Qd1 Qxa2 19.Rxa2 Nxa2 20.Bd2 f5 21.Nc5 Nxc5 22.dxc5 g5 23.Qb3 0-0-0 24.Qxa2 Rd5 25.h5 Rhd8 26.Nxg5 hxg5 27.Bxg5 R8d7 28.f4 Rxc5 29.Qxe6 Bb6 30.Kh1 Kc7 31.h6 Rcd5 32.Qg8 Rd1 33.Rxd1 Rxd1+ 34.Kh2 Bg1+ 35.Kg3 Rd3+ 36.Kh4 Bf2+ 37.Kh5 Be1 38.Bf6 Bg3 39.Be5+ Kb6 40.h7 Rd1 41.Qb3+ 1-0

(26) Babayan,Gagik (1806) - Kim,Andy (1619) [B11]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.27), 16.04.2019

1.e4 c6 2.Nc3 d5 3.Nf3 Nf6 4.e5 Ne4 5.Ne2 Qb6 6.d4 Bg4 7.h3 Bxf3 8.gxf3 Nxf2 9.Kxf2 e6 10.a3 c5 11.c3 Nc6 12.b4 cxd4 13.cxd4 Nxe5 14.Be3 Nc4 15.Nc3 Rc8 16.Qa4+ Qc6 17.Bxc4 Qxa4 18.Nxa4 Rxc4 19.Rac1 b5 20.Nb2 Rxc1 21.Rxc1 Kd7 22.Nd3 f6 23.Bf4 Bd6 24.Bxd6 Kxd6 25.f4 h6 26.Rg1 g5 27.Kf3 a5 28.bxa5 Ra8 29.Nc5 e5 30.fxe5+ fxe5 31.Ke3 exd4+ 32.Kxd4 Rf8 33.Nd3 Ra8 34.Rf1 Rxa5 35.Rf6+ Ke7 36.Rxh6 Rxa3 37.Rg6 Ra4+ 38.Ke5 Ra3 39.Kd4 Ra4+ 40.Ke3 Rh4 41.Nf2 d4+ 42.Ke2 Kd7 43.Rb6 b4 44.Kd3 Rf4 45.Ke2 Rh4 46.Kf3 Rf4+ 47.Kg3 Kc7 48.Rxb4 Kc6 49.Nd3 Re4 50.Rb3 Kd5 51.Nb2 Ke6 52.Rf3 Ke5 53.Nd3+ Kd5 54.Nf2 Re3 55.Kg4 Ke6 56.Rxe3+ dxe3 57.Nd3 Kf6 58.Ne1 e2 59.Ng2 Kg6 60.Kf3 1-0

(27) Boldi,Nicholas Ar (1571) - Drane,Robert Will (1800) [B02]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.29), 16.04.2019
[Winslow,Elliott]

1.e4 Nf6 2.Nc3 d5 3.e5 Ne4 4.d4 Nxc3 5.bxc3 Bf5 6.Nf3 h6 7.c4 e6 8.c3 c6 9.Bd2 Nd7 10.Qb3 Qc7 11.cxd5 cxd5 12.Rc1 Qb6 13.c4 Qxb3 14.axb3 dxc4 15.bxc4 Nb6 16.c5 Nd5 17.Bb5+ Kd8 18.Ba5+ b6 19.Bd2

19...bxc5?? [19...Kc7! Hard to believe. Intention: ...Be7, ...Rhb8, ...Kd8 (!)] 20.dxc5+- [20.Ba5++-] 20...a5 21.0-0 [21.Bc6 Ra6 22.Nd4!] 21...Kc7 22.Ra1? [22.Nd4!] 22...Bxc5 23.Bxa5+ Kb7 [23...Rxa5!? 24.Rxa5 Kb6 25.Rfa1 Bb4 26.Ra7 Kxb5 27.Nd4+= (27.Rxf7? Bc3-/+) ] 24.Rfc1 Rhc8 25.Bd7?

25...Bxf2+ 26.Kxf2 Rxc1 27.Rxc1 Rxa5-/+ 28.Nd4 Ra2+ 29.Kg1?! Be4-+ 30.Bc6+ Kb6 31.Nf3

31...Rc2 [31...Nf4! 32.Bxe4 Ne2+ 33.Kf1 Nxc1 very over] 32.Rxc2 Bxc2 33.Be8?! [33.Bxd5 exd5 34.Nd4 Be4 35.Kf2 Kc5?! 36.e6] 33...f6? [33...Bg6-+] 34.Bf7 [34.exf6 Nxf6 35.Bf7] 34...Nc7 [34...fxe5 35.Bxe6 Nf4 36.Bf7 e4 Black maintains a slim winning chance] 35.Nd4 Bf5 36.Nxf5 exf5 37.exf6 [37.e6?? Nd5] 37...gxf6 38.Kf2 Kc5 39.Kf3 Nd5 40.Bxd5 Kxd5 41.Kf4 Ke6 42.h3 h5 43.g3 h4 44.gxh4 Kf7 45.Kxf5 Kg7 46.h5 Kh6 47.Kxf6 Kxh5 1/2-1/2

(28) Rakonitz,David (1674) - Mercado,Adam (1714) [D85]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.30), 16.04.2019
[Winslow,Elliott]

1.d4 d5 2.Nf3 Nf6 3.c4 g6 4.cxd5 Bg7 [4...Nxd5 5.e4 Nb6 6.Nc3 Bg7 7.h3 0-0 followed by ...f7-f5 with counterplay that shouldn't be under-estimated.] 5.Nc3 Back to the main line. [5.Qa4+!? poses Black a quandary. 5...Bd7 6.Qb3] 5...Nxd5 6.e4 Nxc3 7.bxc3 c5 8.Be2?! [8.Be3!; 8.Rb1! 0-0 9.Be2] 8...Nc6 9.Be3 [9.d5!? Bxc3+ 10.Bd2 Bxa1 11.Qxa1 Nd4 12.Nxd4 cxd4 13.Qxd4 0-0!? (13...f6!?) ] 9...0-0 [9...Bg4!? 10.e5!?] 10.0-0 [10.Rc1!?] 10...cxd4 11.cxd4 b6 [11...Bg4 puts immediate pressure on the center] 12.Rc1 Bb7 13.Qd2 [13.d5!?] 13...Rc8 14.Rfd1 [14.d5] 14...Nxd4?? [14...e6+/=] 15.Nxd4 Bxe4 16.Ba6 Rxc1 17.Qxc1 Qd7 18.Ne2 Qa4

19.Bc8?! Bb2!? 20.Bd7! b5 21.Qd2! Rd8 22.Ng3?? [22.Rf1!!+-] 22...Bc6-/+ 23.Re1 Bg7?? [23...Be5-+; 23...Bf6-+] 24.Qc1!+- Qa5 25.Bd2 Qc7 26.Bxc6 Rxd2 27.Qxd2 Qxc6 28.Qd8+ Bf8 29.Rxe7 a5 30.Rc7 1-0

(29) Porlares,Teodoro (1713) - Tamondong,Cesar B (1600) [D03]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.31), 16.04.2019
[Winslow,Elliott]

1.d4 Nf6 2.Bg5 h6 3.Bh4 d5 4.Nf3 c5 5.e3 Bg4 6.h3 Bf5 7.c3 e6 8.Bd3 Bxd3 9.Qxd3 c4 10.Qc2 Nc6 11.Nbd2 Be7 12.0-0 g5 13.Bg3 g4 14.Ne5 gxh3 15.gxh3 Nxe5 16.Bxe5 Rg8+ 17.Kh2 Bd6 18.Qa4+ Ke7?! [18...Qd7!] 19.f4 Qc7 20.Rg1 Nd7 21.Nf3 f6? 22.Bxd6+ [22.Qc2!+-] 22...Qxd6 23.Rxg8 Rxg8 24.Qxa7 e5 25.Nh4 Rg5?? 26.fxg5 exd4+ 27.Kg2 Qe6 28.Qxd4 hxg5 29.Nf3 Ne5 30.Nxe5 fxe5 31.Qc5+ Kf6 32.Rf1+ Kg6 33.e4 dxe4 34.Qe3 Qd5 35.Kg3 Qd3 36.Re1 Kf5 37.Kg2 Qc2+ 38.Re2 Qb1 39.Rf2+ Kg6 40.Qb6+ Kh5 41.Qxb7 e3 42.Qf3+ 1-0

(30) Tillman,Glenn D (1729) - Malykin,Erika (1637) [C50]
Mechanics' Spring TNM: 1600-1999 San Francisco (5.32), 16.04.2019
[Winslow,Elliott]

1.e4 e5 2.Bc4 Nc6 3.a3 Bc5 4.Nf3 d6 5.Nc3 Bg4 6.h3 Bh5 7.Be2 Nf6 8.d3 h6 9.b4 Bxf3 10.bxc5 Bxe2 11.Qxe2 Nd4 12.Qd1 dxc5 13.f4 Nd7 14.0-0 c6 15.f5 Qh4 16.Ne2 Rd8 17.Be3 0-0 18.Ra2 Nf6 At this point the scoresheets are unreadable nonsense. 0-1 43 or 44. 0-1

(31) Chan,John (1591) - Reyes,Victor (1290) [D02]
Mechanics' Spring TNM: Under 1600 San Francisco (5.33), 16.04.2019

1.d4 d5 2.Nf3 Nf6 3.h3 e6 4.c3 Bd6 5.Bg5 h6 6.Bd2 Ne4 7.Bc1 c5 8.e3 c4 9.Nbd2 f5 10.Ne5 Bxe5 11.Qh5+ Kd7 12.dxe5 Qe7 13.Nf3 Nc6 14.Be2 Kc7 15.Bd2 Bd7 16.Nd4 Nxe5 17.Bf1 Nxd2 18.Kxd2 g6 19.Qd1 Rac8 20.a4 Kb8 21.Be2 Rhf8 22.g3 g5 23.f4 Nc6 24.a5 a6 25.Qe1 e5 26.Nxc6+ Bxc6 27.Rf1 d4 28.exd4 exd4 29.Bxc4 dxc3+ 30.bxc3 Rfd8+ 31.Kc1 Be4 32.Ra4 Rxc4 33.Ra1 Qb4 0-1

(32) Barreyro,Romeo - Khamkar,Susheel S (1033) [D02]
Mechanics' Spring TNM: Under 1600 San Francisco (5.34), 16.04.2019

1.d4 d5 2.Nf3 Bf5 3.Bf4 Nf6 4.e3 e6 5.c3 Nbd7 6.Qb3 Rb8 7.h3 Bd6 8.Bxd6 cxd6 9.Nbd2 0-0 10.g4 Bg6 11.Nh2 Ne4 12.Nhf3 f5 13.gxf5 Nxd2 14.Nxd2 Rxf5 15.e4 Rf6 16.0-0-0 dxe4 17.Bg2 d5 18.Rdf1 Rf8 19.Qd1 Qg5 20.Rhg1 Qf5 21.h4 Nf6 22.Rh1 Bh5 23.Qe1 Bg6 24.Bh3 Qf4 25.Bxe6+ Kh8 26.Qe3 Qd6 27.Bh3 Nh5 28.Qg5 Nf4 29.Bg4 h6 30.Nxe4 Bxe4 31.Be6 hxg5 32.hxg5+ Bh7 33.g6 Qxe6 34.Re1 Qxg6 0-1

(33) James,Charles (1419) - Dubensky,Walter B (1210) [A18]
Mechanics' Spring TNM: Under 1600 San Francisco (5.35), 16.04.2019
[Winslow,Elliott]

1.d4 Nf6 2.c4 e6 3.Nc3 d6 4.e4 Nbd7 5.Nf3 c5 6.Bd3 cxd4 7.Nxd4 e5 8.Nde2 Nc5 9.Bc2 h6 10.b4 Na6 11.a3 Be6 12.Nd5 Rc8 13.Qd3 Nc7 14.0-0 Ncxd5 15.cxd5 Bd7 16.Bb2 Be7 17.Rac1 a6 18.a4 b5 19.a5 Rc4 20.Bc3 Rxe4 21.f3 Rc4 22.Bb3 Rh4 23.Be1 Rh5

24.Ng3 Rg5 25.Bd2 Rg6 26.Bc2 Qa8 27.Qb3 Nxd5 28.Bxg6 fxg6 29.Qc2 Qa7+ 30.Kh1 Nf4 31.Bxf4 exf4 32.Qxg6+ Kd8 33.Nf5 Be8 34.Qxg7 Rf8 35.Nxe7 Qxe7 36.Rc8+ Kd7 37.Rc7+ 1-0

(34) Rushton,Peter (1186) - Ansari,Jahaan (1397) [C00]
Mechanics' Spring TNM: Under 1600 San Francisco (5.36), 16.04.2019

1.e4 e6 2.Nc3 d5 3.Nf3 Bb4 4.d4 Bxc3+ 5.bxc3 dxe4 6.Nd2 Nf6 7.Ba3 Nc6 8.g4 e5 9.Nb3 Bxg4 10.Be2 Bxe2 11.Qxe2 exd4 12.0-0-0 Qd5 13.cxd4 0-0-0 14.c3 Nd7 15.c4 Qf5 16.d5 Nce5 17.Rhf1 Nb6 18.d6 Nbxc4 19.dxc7 Rxd1+ 20.Rxd1 Nd3+ 21.Rxd3 exd3 22.Qe7 Nxa3 23.Qxa3 Qf4+ 24.Kb1 Qxc7 25.h4 Qc2+ 26.Ka1 Qc3+ 27.Qb2 Qxb2+ 28.Kxb2 Rd8 29.Kc3 Rd6 30.f3 Kd8 31.Nd4 Rxd4 32.Kxd4 d2 0-1

(35) Tabatabai,Ashkon (1138) - Carron,Joel (1515) [B30]
Mechanics' Spring TNM: Under 1600 San Francisco (5.38), 16.04.2019

1.e4 c5 2.Nf3 Nc6 3.Bc4 e6 4.0-0 g6 5.d4 cxd4 6.Nxd4 Bg7 7.Be3 Nf6 8.Nc3 0-0 9.Qd2 Ng4 10.h3 Nxe3 11.fxe3 Ne5 12.Bd3 Nxd3 13.Qxd3 a6 14.Rf3 b5 15.a4 b4 16.Nce2 Bb7 17.Qc4 Qe7 18.Nf4 e5 0-1

(36) Chambers,Don (1127) - Simpkins,Jerry (1508) [C50]
Mechanics' Spring TNM: Under 1600 San Francisco (5.39), 16.04.2019
[Winslow,Elliott]

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Bc4 Nc6 5.c3 Bg4 6.Qb3 Bh5 7.Qxb7 Na5 8.Qb5+ c6 9.Qxh5 Nxc4 10.0-0 Nf6 11.Qf5 g6 12.Qh3 Bg7 13.Nxd4 Qb6 14.b3 Ne5 15.Be3 c5 16.Nf3 Nxe4 17.Nxe5 Bxe5 18.Qf3 f5 19.b4 0-0 20.Qd1 Nxc3 21.Qb3+ Kh8 22.Nxc3 Qxb4 23.Bd2 Qd4 24.Rad1 Rab8 25.Qa3 c4 26.Bh6 Qh4 27.Bg7+ Kxg7 28.g3 Qg4 29.Qxa7+ Kh8 30.Qe3 f4 31.Qe2 f3 32.Rxd6 Qh3 33.Qxe5+ Kg8 34.Qe6+ Qxe6 35.Rxe6 Rb2 36.h4 Rc2 37.Ne4 Rxa2 38.Ng5 c3 39.g4 Rf4 40.Re8+ Kg7 41.Ne6+ Kf7 42.Nxf4 Kxe8 43.Nd3 Rd2 44.Ne5 c2 45.Re1 Rd1 46.Nd3+ Rxe1+ 47.Kh2 c1Q 48.Nxc1 Rxc1 and won in a few illegal (as written) moves. 0-1

(37) Morgan,Jerry (1491) - Caburi,Alwin [A03]
Mechanics' Spring TNM: Under 1600 San Francisco (5.40), 16.04.2019

1.f4 e6 2.Nf3 d5 3.e3 Nf6 4.b3 Bd6 5.Bb2 0-0 6.Bd3 Re8 7.0-0 c5 8.Ne5 Nbd7 9.c4 Be7 10.Nc3 d4 11.Ne2 Nxe5 12.fxe5 Nd7 13.exd4 Nxe5 14.Bxh7+ Kxh7 15.dxe5 Bg5 16.Rxf7 Kg8 17.Rf3 Rf8 18.Rxf8+ Kxf8 19.Bc3 Bd7 20.Ng3 Bc6 21.Qh5 Bh6 22.Rf1+ Kg8 23.Qf7+ Kh8 24.Qxe6 Bd7 25.Qd6 Rc8 26.e6 Bc6 27.Qxd8+ Rxd8 28.e7 1-0

(38) Abdi,Mehron Edwar (1069) - Revi,Frank (1375) [B50]
Mechanics' Spring TNM: Under 1600 San Francisco (5.41), 16.04.2019

1.e4 c5 2.Bc4 Nc6 3.Nf3 d6 4.0-0 Nf6 5.Ng5 Ne5 6.d3 Nxc4 7.dxc4 h6 8.e5 Nd7 9.e6 Ne5 10.Nxf7 Nxf7 11.exf7+ Kxf7 12.Qf3+ Ke8 13.Nc3 e6 14.Bf4 Be7 15.Rad1 h5 16.Be5 Bf8 17.Nb5 Qb6 18.Bxd6 Bxd6 19.Rxd6 1-0

(39) Starr,Albert (1543) - Ahrens,Richard [A00]
Mechanics' Spring TNM: Under 1600 San Francisco (5.42), 16.04.2019

1.b4 e5 2.Bb2 d6 3.e3 Nf6 4.d3 Be7 5.Nf3 0-0 6.Be2 b6 7.0-0 Bb7 8.Nbd2 e4 9.dxe4 Nxe4 10.Nxe4 Bxe4 11.c4 Bg6 12.a4 Bf6 13.Bxf6 Qxf6 14.Qd4 Nd7 15.Rfe1 Rfe8 16.Bf1 Be4 17.Qxf6 Nxf6 18.Nd2 c6 19.Nxe4 Nxe4 20.g3 a6 21.Bg2 Rac8 22.Red1 Rcd8 23.Rd4 d5 24.cxd5 cxd5 25.Rc1 f5 26.Rc6 Rc8 27.Rxc8 Rxc8 28.Rxd5 Rc1+ 29.Bf1 Rb1 30.f3 Nc3 31.Rxf5 Nxa4 32.Kg2 Rxb4 33.Bxa6 Rb3 34.Bc4+ 1-0

(40) Isreal,Andrew - Frank,Robert H (1426) [D02]
Mechanics' Spring TNM: Under 1600 San Francisco (5.43), 16.04.2019

1.d4 Nf6 2.Nf3 d5 3.Bf4 Bg4 4.Nbd2 Nh5 5.Ne5 Bxe2 6.Bxe2 Nxf4 7.Bg4 e6 8.Qf3 Qf6 9.g3 Ng6 10.Qxf6 gxf6 11.Nxg6 hxg6 12.0-0 f5 13.Bf3 c5 14.c3 cxd4 15.cxd4 Nd7 16.Rac1 Bg7 17.Nb3 b6 18.Rc7 Bh6 19.Re1 Nf6 20.Re2 0-0 21.Rec2 Rfd8 22.Rb7 Ne8 23.a4 Nd6 24.Rbc7 Rac8 25.a5 Rxc7 26.Rxc7 Nc8 27.axb6 axb6 28.Be2 Bf8 29.Ba6 Nd6 30.Nd2 Rb8 31.Nf3 b5 32.Ne5 b4 33.Nd7 Ra8 34.Rc6 Be7 35.Rb6 Kg7 36.Bb7 Nxb7 37.Rxb7 Bf6 38.Rxb4 Ra7 39.Nxf6 Kxf6 40.Rb8 Ra4 41.b3 Rxd4 42.b4 f4 43.b5 f3 44.h4 Rd1+ 45.Kh2 Rf1 46.Ra8 Rxf2+ 47.Kg1 Rg2+ 48.Kf1 e5 49.b6 e4 50.b7 Rb2 51.b8Q Rxb8 52.Rxb8 d4 53.Kf2 Kf5 54.Rb7 Kg4 55.Rxf7 e3+ 56.Ke1 d3 57.Rf6 d2+ 58.Kd1 Kxg3 59.Rxg6+ Kf2 60.Re6 e2+ 61.Kxd2 Kf1 62.h5 Kg2 63.Rxe2+ Kg1 64.Ke3 1-0

(41) Wagner,Tyler - Sachs-Weintraub,Julian (1416) [D55]
Mechanics' Spring TNM: Under 1600 San Francisco (5.44), 16.04.2019

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6 Bxf6 6.e3 0-0 7.Nf3 c6 8.a4 Nd7 9.Bd3 Re8 10.Qc2 g6 11.0-0 Nb6 12.b3 a5 13.c5 Nd7 14.e4 e5 15.dxe5 Nxe5 16.Nxe5 Bxe5 17.exd5 cxd5 18.Rad1 Bxc3 19.Qxc3 Qg5 20.Kh1 Bd7 21.h3 Bc6 22.Qd2 Qe7 23.Rc1 Qd7 24.Kg1 d4 25.Rfe1 Rxe1+ 26.Rxe1 Qd5 27.f3 Qxb3 28.Bc2 Qc4 29.Rc1 Qb4 30.Qxb4 axb4 31.Ra1 Ra5 32.Rd1 Rxc5 33.Bb3 Rc3 34.Rb1 d3 35.Rb2 b6 36.Kf2 Rc1 37.Ke3 Ra1 38.Ra2 Rxa2 39.Bxa2 Bxa4 40.Kxd3 b3 41.Bb1 Kg7 42.Kc3 Kf6 43.Kb4 b5 44.Bd3 Ke5 45.Kc3 Kf4 46.Kb2 Kg3 47.Bb1 Kxg2 48.Kc3 Kxf3 49.Kd4 Kg3 50.Ke5 f5 51.Kf6 Kxh3 52.Kg5 Kg3 53.Kf6 f4 54.Bxg6 hxg6 55.Ke5 f3 56.Ke4 f2 57.Ke3 f1Q 58.Kd2 b2 59.Kc3 b1Q 60.Kd2 Qfd3# 0-1

(42) Jijo,Wilson - Olson,David R (1400) [C41]
Mechanics' Spring TNM: Under 1600 San Francisco (5.45), 16.04.2019
[Winslow,Elliott]

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 c5 7.Nf5 h6 8.0-0 g6 9.e5 Bxf5 10.exf6 Qxf6 11.Re1+ Be6 12.Bxe6 fxe6 13.Ne4 Qd4 14.Qxd4 cxd4 15.Nf6+ Kf7 16.Ne4 e5 17.b3 Nc6 18.Ba3 Ke6 19.f4 Be7 20.fxe5 dxe5 21.Bxe7 Kxe7 22.Nc5 b6 23.Nd3 Kd6 24.Re4 Rhf8 25.Rd1 Rac8 26.c3 Kd5 27.Ree1 e4 28.c4+ Kd6 29.Rxe4 Rce8 30.Rxe8 Rxe8 31.Kf2 g5 32.Nc1 Nb4 33.Rxd4+ Ke5 34.Rd2 Rf8+ 35.Ke3 Rf1 36.Nd3+ Nxd3 37.Kxd3 Re1 38.Kc3 [38.Re2+! Rxe2 39.Kxe2+-] 38...a5 39.Rd5+ Ke6 [39...Ke4!] 40.Kd4 [40.Rb5!] 40...Re2 41.Rb5 Rd2+ 42.Ke3 Rxg2 43.Rxb6+ Kd7 44.Kd4?? [44.Rxh6 Rxa2 45.Kd4+/-] 44...Rxh2= 45.c5 g4 46.Rg6 h5 47.Kd5 Rd2+ 48.Kc4 Rc2+ [48...Rxa2] 49.Kb5 Rxa2 50.Kb6 Rb2 51.c6+ Kd8?? [51...Ke7=; 51...Ke8=] 52.c7+ Kd7 53.Rg7+ 1-0

(43) Robertson,Wade (982) - Yamamoto,Craig (1500) [C62]
Mechanics' Spring TNM: Under 1600 San Francisco (5.46), 16.04.2019
[Robertson,Wade A]

1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.Bxc6+ bxc6 5.0-0 c5 6.b3 Bb7 7.d3 f6?! 8.Bb2 Ne7 9.Nbd2 Nc6 10.a3 a6 11.Nc4 Be7 12.Nfd2 Nd4 13.f4 Here I had also considered Na5 pressuring the light squared "Good" bishop, but with black preparing to castle kingside I liked the idea of trying to open the f-file and activating the rook. The best tactical sequence using the knight attack would have ended up converting the dark-square bishop, which was less appealing given the pawn structure, even after trading away 1x bishop earlier in the game [13.Na5] 13...0-0 14.fxe5 Here my intuition led me astray. Computer really likes advancing to f5 rather than the exchange here, but I was perhaps impatiently looking to start to simplify the game. Black's recapture with the f-pawn initiated a series of trade-downs. 14...fxe5 15.Rxf8+ Bxf8 16.Nf3 Nxf3+ 17.Qxf3 Qf6 18.Qxf6 gxf6 19.Rf1 Bc8? Here Black fails to defend the f-pawn while maneuvering the LSB. This is more than enough advantage to carefully convert. 20.Rxf6 Be7 21.Rf3 Bg4 22.Rg3?! I snapped out this move thinking it was a piece won due to the pin, but quickly realized that the rook was in danger of being trapped--bail out! 22...h5 23.Re3 [23.h3? Bh4] 23...Bg5 24.Re1 Rf8 Worried about black's LSB infiltrating begind my well-coordinated pawns onto d1, so I repel with a pawn push 25.h3 Be6 26.Rf1 Rxf1+ 27.Kxf1 Bd8 28.Ke2 Bxc4 Here I am more than happy to trade black bishop for white knight. Although well posted, this only leaves DSBs on the board, and with a pawn up and black pawns blockaded on dark squares, the way ahead for White is clear and easy to execute. 29.dxc4 Kf7 30.Kf3 Kf6 31.Bc1 a5 32.Bd2 Kg6 33.a4 c6 34.c3 d5 35.cxd5 cxd5 36.exd5 Kf5 37.g4+ hxg4+ 38.hxg4+ Kf6 39.Ke4 Bc7 40.b4 axb4 41.cxb4 cxb4 42.Bxb4 Bb6 43.Bd2 Bd4 44.a5 1-0

(44) Anderson,David - Chui,Kevin [D45]
Mechanics' Spring TNM: Under 1600 San Francisco (5.47), 16.04.2019
[Winslow,Elliott]

1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.e3 Be7 5.Nc3 c6 6.cxd5 cxd5 7.Bd3 a6 8.0-0 0-0 9.Re1 b5 10.a3 Bb7 11.Ne5 Nbd7 12.Ng4 Nxg4 13.Qxg4 f5 14.Qh3 Nf6 15.f3 Qb6 16.Ne2 Qa5 17.b4? Bxb4 18.Bb2?? Bxe1 19.Rxe1?? ??? 19...Qxe1# 0-1

(45) Radaelli,Lucas - Cole,Tony (1487) [D53]
Mechanics' Spring TNM: Under 1600 San Francisco (5.48), 16.04.2019
[Winslow,Elliott]

1.d4 d5 2.c4 Nc6 3.Nc3 Nf6 4.Bg5 e6 5.e3 Be7 6.Nf3 0-0 7.cxd5 Nxd5 8.Bxe7 Qxe7 9.e4 Nxc3 10.bxc3 Qa3 11.Qc2 Rd8 12.e5 Qa5 13.Rd1 b5 14.Bd3 g6 15.Be4 Bb7 16.0-0 Rab8 17.Rb1 Ne7 18.Bxb7 Rxb7 19.Rb3 Qb6 20.a4 a6 21.axb5 axb5 22.Rfb1 Qc6 23.Qb2 Rdb8 24.h3 Unable to read scoresheet -- Black won, move 0-1

(46) Harris,Clarence (1400) - Capdeville,Barry (1219) [C42]
Mechanics' Spring TNM: Under 1600 San Francisco (5.49), 16.04.2019
[Winslow,Elliott]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.d3 Nf6 7.Nc3 Bg4 8.Be3 Qd8 9.Bxa7+ Be7 10.Bd4 0-0 11.0-0-0 Nbd7 12.h3 Bxf3 13.Qxf3 c5 14.Bxf6 Bxf6 15.Qxb7 Bxc3 16.bxc3 Rb8 17.Qf3 Qa5 18.Kd2 Rb2 19.Be2 Qxa2 20.Rc1 Ne5 21.Qg3 Rfb8 22.Rhe1 R8b6 23.Bd1 g6 24.Qf4 Qd5 25.Re4

25...Nxd3 26.Qf6 Qxe4 27.Bf3 Rxc2+ 0-1

(47) Karle,Ryan - Latourette,Nicholas (1347) [C50]
Mechanics' Spring TNM: Under 1600 San Francisco (5.50), 16.04.2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.0-0 Bc5 5.Nc3 d6 6.a3 h6 7.b4 Bb6 8.Bb5 a6 9.Bxc6+ bxc6 10.h3 Be6 11.a4 Qc8 12.Nh4 g5 13.Nf5 Bxf5 14.exf5 Qxf5 15.a5 Bd4 16.Ra3 h5 17.Ra2 g4 18.h4 g3 19.Qf3 Qxf3 20.gxf3 Rg8 21.Re1 gxf2+ 22.Kf1 Rg1+ 23.Ke2 fxe1Q+ 24.Kd3 Qxc1 25.Ne2 Qf1 26.c3 Ba7 27.Rc2 Qxf3+ 28.Kc4 Qd5# 0-1

(48) Cowgill,Jackie (1031) - Sullivan,George (958) [C67]
Mechanics' Spring TNM: Under 1600 San Francisco (5.53), 16.04.2019
[Winslow,Elliott]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.0-0 Nxe4 5.d4 Nxd4? [5...Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8 is the renowned Berlin Defense.] 6.Nxd4 exd4 7.Qxd4? [7.Re1+-] 7...Nf6 8.Nd2?! [8.Re1+ Be7 9.Bf4 0-0!? 10.Bxc7 Qxc7 11.Rxe7 Qxc2 12.Nc3 Qxb2 13.Rb1 Qa3 14.Re3 Qa5~/=] 8...a6 9.Ba4 b5 10.Bb3 d5-/+ 11.Nf3 Be7 12.c3 0-0 13.Bg5 Bb7 14.Bc2 h6 15.Bxf6 Bxf6 16.Qd3 g6 17.Rab1?! [17.a4] 17...Rb8 [17...Qd6; 17...c5] 18.Qd2 Kg7 19.a4 c5 20.b4

20...d4! 21.cxd4 Bxf3 22.gxf3 Bg5?! [22...cxb4; 22...c4; 22...Bxd4; 22...cxd4] 23.f4 Bh4? [23...Be7 24.bxc5 Bxc5-/+] 24.bxc5+/- Qd5 25.f3 [25.axb5 axb5 26.Rb4] 25...f5 26.axb5 axb5 27.Bb3 Qd8 28.d5 b4 29.c6? [29.d6!] 29...Be7?! [29...Qd6] 30.Rbc1 Rc8 31.Rfd1 Bd6 32.Qf2? Bxf4?? [32...Qf6] 33.Qd4+ Rf6 34.Qxf4 Qb6+ 35.Kh1 Rc7 36.h4 [36.d6!] 36...h5 37.d6 Rxc6 38.d7 [38.Rxc6 Qxc6 39.d7 Rf8 40.d8Q Rxd8 41.Rxd8 is actually mate in half a dozen moves!] 38...Rxc1 39.Qxc1 [39.Rxc1] 39...Qd8 40.Qc8 [40.Qa1!] 40...Rf8 41.Qc5 Qxh4+ 42.Kg2 Qg5+ 43.Kf2 Qh4+ 44.Ke2 Qh2+ 45.Ke1 Qh1+ 46.Kd2 Qg2+ 47.Kc1 Qg5+ 48.Kb1 Rd8 49.Qd4+ Kh6 50.Qxb4 f4 51.Bc2 Qe5 52.Qb2 Qe3 53.Qf6?? 1-0?? [53.Qb5; 53.Qb4; 53.Bxg6!; 53.Qf6?? Rb8+ 54.Qb2! or else -+ 54...Rxb2+ 55.Kxb2 Qb6+=] 1-0