Chess Room Newsletter #871

Newsletter #871

May 31, 2019

By Abel Talamantez

 

Summer TNM is Back! Round 1 Highlights

Welcome back! The Summer TNM is back in full swing with our largest first day turnout in some time. Almost 120 players are already registered in what promises to be a very competitive field across all sections. The first round produced one big upset, as David Askin defeated defending co-champion IM Elliott Winslow on board 2. FM Kyron Griffith begins play next week as the #1 seed in the 41 player open section, with many young guns and cagey veterans fighting for the top of the standings. The 1600-1999 and under 1600 sections also have a healthy distribution of players, truly making it so players have to stay strong throughout the marathon to come out on top.

Find the current standings here.

It is not too late to join, but space is very limited. Please register here.

 

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GM Sam Shankland to Give Round 2 TNM Lecture on June 4!

 

We are happy to announce that GM Sam Shankland will give the TNM lecture on June 4 starting at 5:15pm. He will also have copies of his books and DVD's available for purchase and signings. Please join us for the lecture and following the round 2 TNM action that day!

 

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IM Elliott Winslow wins 2019 CalChess Senior State Championship

IM Elliott Winslow has certainly had a banner month. Fresh after pulling 4 straight wins in impressive fashion to tie for first in the Winter TNM, he played very solid against a tough field to take clear first at the 2019 CalChess Senior Championship, held the weekend of May 17-19 at the Mechanics' Institute Chess Club. With this win, he has earned the right to represent Northern California at the National Senior Tournament of Champions at the U.S. Open in Orlando in August. This was a historic event for the Mechanics' Institute, as it was the first state championship held on site in quite some time and I'm told probably ever.

Final standings for this event can be found here. 

 

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Thoughts on the Future of the Mechanics' Institute Chess Club

I came into the position of Chess Director in December 2018 with the goal of bringing new ideas and energy into the club. I also wanted two very important things. I wanted our chess club to be an innovator, an example for other clubs to follow and to set a standard of professionalism and quality that would support growth and new opportunities. I also wanted to understand the culture and the members of the club, as I always felt it was important to keep in mind the members and players that have preserved and given to this legendary club for well over 160 years.

We are on course to begin a new phase for growth, and we look forward to the opportunities ahead. We are building the structure and talent within to support the growth and new ideas, and offer more services and events for not only the San Francisco community, but to the greater Bay Area. Even as we prepare for this long term strategic plan, I want our chess community to know this will not mean a sacrifice of the events and services that mean so much to many of our regular players. Even as we prepare to offer more high profile events and larger money prize pool events, we will also continue to run our regular one day events with entry fees that are the best deal in town. We will continue to offer our free classes, which has now expanded to a free adult beginners class on Wednesdays from 5:30-7:00 taught by GM Nick de Firmian. We also are now offering a Thursday night free class for club players from 5:30-7:30 taught by FM Paul Whitehead. These are all in addition to the free kids only beginner class we offer Saturday mornings from 11-1 taught by WGM Carla Heredia that has been expanding greatly over the last few weeks and our free women's class on Sundays from 11-1. We are as committed to serving our community and raising awareness of chess as we are to our growth, and we believe both can coexist without sacrificing the other.

I want to personally thank so many Mechanics regulars who constantly share ideas and give feedback regarding what they would like to see. Part of that engagement has helped make what we are now, and what we are becoming; a leader in chess clubs and a model for how chess clubs can grow. I think the open communication has also created a family atmosphere among our members and players that is good to feel. The entire staff here loves what we do, and we go to work looking forward to our chess community and providing a great experience. We hope all of you feel and sense that enthusiasm, and we hope you know that feeling the support from all of you is part of what makes this the best job in the world.

Thank you again for your support and please let us know if you have any questions or feedback.

Abel Talamantez
Chess Director, Mechanics' Institute

 

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Local High School Stops By For a Visit!

 

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San Francisco Mechanics Back in Action in 2019 Summer PRO Chess League

The Summer PRO Chess league season begins this Saturday with a format that makes it possible for fans to play as part of the PRO Chess League team, playing matches whose scores count for the team score!

We need players, and we are rallying our fans to be part of the Mechanics PRO Chess League team this summer. To register, please follow this link to join the fan page, which must be done to begin the process of joining: https://www.chess.com/l/mechanics

We can have as many team members as possible, so we encourage ALL players to join, whatever the rating. We definitely need some strong supportive 2000+ players, so be part of the action this summer!

Schedule is here:

• Match 1: Saturday June 1st, 5-6 pm pacific v. San Diego (followed by a knockout featuring a top PRO player for each team)
• Match 2: Saturday June 8th, 7:15-8:15 pm pacific v. Chengdu (preceded by knockout from 6-7:15 pm)
• Match 3: Saturday June 15th, 5-6 pm pacific v. Saint Louis (followed by knockout from 6-7:15)

Participants will play a 2-game rapid match (10+2) online against a fan from the opposing team.

Even if you can't play, you can still help the team just by clicking the link above to join the fan club (club size determines allocation of white and black in the PRO knockouts).

For more information about the Summer League, read here.

Also, please reach out to team manager David Pruess for more info, he can be reached at: [email protected]

Go Mechanics'!

 

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Friendly Rivalries, Part 8

By FM Paul Whitehead

Both James Tarjan (b. 1952) and Larry Christiansen (b. 1956) were dominant players in the Bay Area and beyond in the ‘70's-80's. Tarjan became the World's 100th Grandmaster in 1976, and returned to chess after 30-year retirement in 2014 - capping his comeback with a win over former World Champion Vladimir Kramnik in 2017.

One of my all-time greatest chess memories is watching Christiansen conduct a brilliant mating attack vs. Yasser Seirawan in the Berkeley People's Tournament, 1978. Go find the game; it's a bit of magic.

Both players have Wikipedia entries:

• https://en.wikipedia.org/wiki/James_Tarjan
• https://en.wikipedia.org/wiki/Larry_Christiansen

The two games below each have their own importance and drama, but for me foremost is revenge: I succeeded in evening up my lifetime scores against these illustrious GM's.

I have only these words to add: Tarjan and Christiansen are warriors of the chessboard. When they had done all they could to win -- including going too far -- they asked no quarter. In both games I came back from a precipice, and then had a chance to show a certain coolness of head and technique to take the point.

The underdog, in any contest, has certain advantages. The "stronger" player might over-extend, be over-confident. But it's up to you to make your luck, and being crafty and opportunistic can be high values in a given chess game.

It's worked for me.

(1) Whitehead,Paul A (2450) - Christiansen,Larry Mark (2515)
CalChess Masters Berkeley, 1983

Black was moderately worse throughout, but kept trying to upset the balance and rattle White. However, avoiding the exchange of queens with 25...Qb6, and then pitching a pawn with 27...Rfe8 and 28...Kh8 was going too far. White continued to play actively and accurately, repulsing Black's vague threats and finally simplifying into a winning ending. A definite case of over-pressing, but a memorable victory for me nevertheless. 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.f4 e6 7.Be3 e5 8.fxe5 Ng4 9.Bg1 Ngxe5

10.Qd2 Be7 11.0-0-0 Nxd4 12.Qxd4 0-0 13.Be2 Be6 14.Nd5 Bxd5 15.Qxd5 Qc7 16.Kb1 Rac8 17.c3 b5 18.Bxb5 Rb8 19.Ka1 Ng4

20.Be2 Nf6 21.Qd3 Qb7 22.Rb1 Nxe4 23.Bd4 Nc5 24.Bxc5 dxc5 25.Qf3 Qb6 26.Bc4 Bf6 27.Rhd1 Rfe8 28.Rd7 Kh8 29.Bxf7 Re1

30.Rdd1 Re5 31.Bc4 Rbe8 32.Rd7 Re3 33.Qh5 R3e5 34.Qf7 Rb8 35.Rdd1 Qa5 36.Rbc1 Re3 37.Bb3 Re7 38.Qd5 Reb7 39.Re1 Qb5

40.Rc2 Re7 41.Rd1 a5 42.Bc4 Qb6 43.a4 g6 44.Ka2 Be5 45.g3 Bc7 46.Rf2 Re5 47.Qf3 Rf5 48.Qe2 Qc6 49.Bb5 Rxf2

50.Qxf2 Qe6+ 51.Ka1 Bd6 52.Re1 Qf5 53.Qxf5 gxf5 54.Re6 Rd8 55.Rf6 f4 56.gxf4 Kg7 57.Rf5 Be7 58.Bc4 Rd1+ 59.Ka2 Bd6

60.Rf7+ Kg6 61.f5+ Kg5 62.Rxh7 Rd2 63.Be6 Bxh2 64.Ra7 Be5 65.Kb3 Rh2 66.Rxa5 Bf4 67.Rxc5 Bc1 68.a5 Rxb2+ 69.Kc4 Ra2

70.Kb5 Ra3 71.c4 Kf6 72.Rd5 Rb3+ 73.Kc6 Be3 74.Rb5 Ra3 75.c5 Ke7 76.Rb3

This tournament was a great success for me: clear 4th with a 6-3 score, behind GM Nick de Firmian and IM Vince McCambridge who tied for 1st and 2nd with 7.5-1.5 each, and Christiansen who took clear 3rd with 6.5-2.5. 1-0

 

(2) Whitehead,Paul (2332) - Tarjan,James Edward (2518)
American Open, 1978

A game with a lot of swings - mostly missed opportunities for Black. 1.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.d4 cxd4 5.Nxd4 a6 6.Bg5 Nc6 7.Qd2 e6 8.0-0-0 Bd7 9.f4 b5

10.Bxf6 gxf6 11.Nxc6 Bxc6 12.Qe3 Qe7 13.Bd3 Qa7 14.Qh3 Qc5 15.Rhe1 Be7 16.e5 fxe5 17.f5 Bd7

18.f6? 18.Qh5 was much better. 18...Bf8 19.Ne4 Qc7 20.Qh5 0-0-0 21.Ng5? Going after the wrong pawn. 21.Qxf7 was still unclear. 21...Be8 22.Nxh7 Bc6 23.Kb1 Qb7 24.g4 e4 25.Bf1 d5

26.Re3 A desperate attempt to reinforce the stranded knight on h7. 26...Bd6 27.Rh3 Bf4 28.g5 e5 29.g6 fxg6 30.Qxg6 Rhg8

31.Qh5 Be8 32.f7 Desperation. 32...Qxf7 33.Rc3+ Kb7 34.Qh4 Bd7 This move is perfectly fine, but why not 34...Bc6? In time-trouble small cracks start to appear. 35.Nf6

There is nothing better. 35...Bg5?! 35...Rh8! won immediately. 36.Nxe4!? Bxh4? And here 36...Qxf1! won immediately also. The mistakes are piling up... 37.Nd6+ Ka8 38.Nxf7 Rdf8? 38...Rde8 keeps the balance. 39.Nxe5 Bc8 40.Bh3

40...Bf6 Another mistake, on the 40th move of course. Black goes behind 2 pawns which is too much in this ending. 40...Bxh3 41.Rxh3 Rf4 might yet hold. 41.Rxc8+ Rxc8 42.Bxc8 Bxe5 Going for bishops of opposite colors, which fails just as in the game with Christiansen. No better was 42...Rxc8 43.Rxd5 Re8 44.Nf3. 43.Bxa6 b4 If 43...Bxh2 44.Bxb5, and Black loses the pawn on d5. 44.h4 Rg3

45.Rh1 Bf4 46.h5 Bh6 47.Bd3 Ka7 48.a3 bxa3 49.bxa3 Kb6

50.Ka2 Kc5 51.Rb1 Rh3 52.Bg6 Rh4 53.Rd1 Rf4 54.Kb3 Bg7

55.Rh1 Rf3+ 56.Bd3 Rf6 57.a4 Rb6+ 58.Bb5 Rh6 59.Rg1 Be5

60.Rg5 Bf4 61.Rf5 Bd2 62.c4 This wins by force. 62...Rd6 63.Kc2! Not 63.Rxd5+Rxd5 64.cxd5 Kxd5, and the Black king goes to h8 while the Black Bishop sacrifices itself for the a-pawn with a dead draw. 63...Be3 64.Kd3 Bh6 65.cxd5

Now the White king can penetrate to control h8. 65...Rxd5+ 66.Ke4! Rxf5 67.Kxf5 Kd6 68.Kg6 Be3 69.h6

A less than perfect game indeed! But sometimes you have to take what is given you... With this victory I became 1978 American Open Co-Champion with IM David Strauss 1-0

 

 

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Tony's Teasers

This week's problem:

 

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Nick de Firmian's Column

Learn from the World Champions

This week: William Steinitz

Wilhelm (later William) Steinitz was born in 1936 in Bohemia which was part of the Austrian empire in the 19th century.  He became the first "official" World Chess Champion with his match victory over Zukertort in 1886 when he declared himself champion of the world. Many have argued that he could have been considered world champion as early as 1866 when he beat Adolf Andersen in a match 8-6. Claiming the title was a new concept then, and this innovation was as important a contribution to chess as any he made over the board. Steinitz lost his title to Lasker in 1894, but he had gone 32 years unbeaten in match play from 1862 to 1894. Times were of course very different then as there were fewer competitions and players would take long breaks from competitive play, yet this is still a remarkable achievement.

Although Steinitz became famous by winning in the all-out attacking style that was common in the 1860s, he began in the 1870s to play in a new positional style that was superior to the pure romantic play. This new style was controversial and some even branded it as cowardly, though no one could deny it was effective. We can credit Steinitz with enhancing the world wide level of chess understanding, a true mark of a World Champion.

(1) Steinitz,William - Von Bardeleben,Curt

Hastings, 1895

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3

Steinitz ventures the aggressive Moller Attack of the Guico Piano. Now it is known that best for Black is to now play 7...Nxe4 8. 0-0 Bxc3 with even chances in a wild position. 7...d5 8.exd5 Nxd5

9.0-0! Be6 On 9...Nxc3 10. bxc3 Bxc3? 11. Qb3! would hit f7 as well as the bishop. 10.Bg5 Be7 11.Bxd5 Bxd5 12.Nxd5 Qxd5 13.Bxe7 Nxe7 14.Re1

Black has only to castle to have good chances, but the pin on the knight causes trouble. 14...f6 15.Qe2 Qd7 16.Rac1 c6?

This logical looking move seeks to control the d5 square but meets an aggressive response. von Bareleben needed to play 16...Kf7 immediately to deal with the problems of development. 17.d5! cxd5 18.Nd4 Kf7 19.Ne6 Rhc8

It seems Black has gotten his pieces out, yet Steinitz uses the advanced knight to attack on the kingside. Everything hinges on one tempo. 20.Qg4 g6

21.Ng5+! Ke8

22.Rxe7+! Kf8

The best try. White wins simply on 22...Qxe7 23. Rxc8+ or 22...Kxe7 23. Re1+ Kd8 24. Ne6+. 23.Rf7+! Kg8 Again forced. 24.Rg7+! Kh8

24...Kf8 would lose to 25. Nxh7+ and capturing the rook with the king or queen allow a capture with check. 25.Rxh7+

At this point Black resigned. Steinitz demonstrated immediately afterward there is a mate in ten moves which can only be averted by ruinous loss of material: 25...Kg8 26. Rg7+ Kh8 27. Qh4+ Kxg7 28. Qh7+ Kf8 29. Qh8+ Ke7 30. Qg7+ Ke8 31. Qg8+ Ke7 32. Qf7+ Kd8 33. Qf8+ Qe8 34. Nf7+ Kd7 35. Qd6 mate. 1-0

(2) Reiner - Steinitz,William
Vienna, 1860

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Bc5

5.0-0 The modern way is to play sharply with 5. c3 dxc3 6. Bxf7+ Kxf7 7. Qd5+, though Black can hold the balance. 5...d6 6.c3 Bg4

7.Qb3! Bxf3! 8.Bxf7+ Kf8

9.Bxg8?! Better to capture immediately on f3. 9...Rxg8 10.gxf3 g5!

Controlling the important f4 square and taking kingside space gives Black the edge. 11.Qe6 Ne5 12.Qf5+ Kg7 13.Kh1 Or 13. Bxg5 Nf3+ with still and edge to Black. 13...Kh8 14.Rg1 g4

At first site it is difficult to see who is attacking here. Steinitz shows the black pieces coordinate very well. 15.f4?! Nf3 16.Rxg4

16...Qh4!

A knockout blow! 17.Rg2 Qxh2+! 18.Rxh2 Rg1#

0-1

(3) Bird,Henry - Steinitz,William
London, 1866

1.f4 e5

Bird played the opening named after him and Steinitz replied with the aggressive From's Gambit. 2.fxe5 d6 3.exd6 Bxd6

4.Nf3 Nf6 5.d4 Nc6 6.Bg5 Bg4 7.e3 Qd7

Black has development for the pawn. White is theoretically doing well, but must be careful. 8.Bxf6 gxf6 9.Bb5 0-0-0 10.d5?

This is simply too greedy! White must attend to development instead of seeking to win material. Steinitz highlights the problem. 10...Qe7! 11.Bxc6

Not 11. dxc6 Bb4+ 12 Nbd2 Bxd2+. 11...Qxe3+! 12.Qe2

From here on Steinitz gives no quarter. 12...Qc1+ 13.Qd1 Rde8+! 14.Bxe8 Rxe8+ 15.Kf2

15...Qe3+ 16.Kf1 Bxf3

17.gxf3 Bc5

There no way out. It is mate in 2. 18.Kg2 Rg8+

0-1

 

 

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2019 Summer TNM Games Round 1

Annotations by GM Nick de Firmian and IM Elliott Winslow

(1) Chambers,FM Ezra (2308) - Walder,Michael (2007) [B21]
MI Summer TNM: 2000+ San Francisco (1.1), 28.05.2019
[de Firmian,Nick]

1.e4 c5 2.Nc3 Nc6 3.Bb5 g6 [3...Nd4 is what some of the "Anti-Sicilian Oddlines" books recommend.] 4.Bxc6 dxc6 5.f4 Nf6 6.Nf3 Bg7 7.0-0 0-0 8.d3 b6?! [I would go 8...Ne8 9.Qe1 Nc7 heading for d4] 9.Qe1 Bg4 10.Ne5 Qc8?!N [10...Bd7 11.h3 e6 12.Nf3 b5 13.Be3 c4 14.Bc5 1-0 40, Tazbir, M (2497)-Plat,V (2388) Litomysl 2010] 11.Qh4 [missing 11.f5! gxf5 12.h3] 11...Be6 12.f5 gxf5 13.Bh6 Bxh6 14.Qxh6 Qc7 [14...Ng4 needed to be tried] 15.Nf3 Kh8 16.Ng5 Rg8 17.exf5 Rxg5 18.Qxg5 Bd5 19.Qf4 Qb7 20.Rae1 Rg8 21.g3 Nh5 22.Qe5+ f6 23.Qxe7 Qb8 24.Re3 Rf8 25.Rfe1 Ng7 26.Nxd5 cxd5 27.Qd7 Rd8 28.Qc6 Nxf5 29.Qxf6+ 1-0

(2) Askin,David (2003) - Winslow,Elliott (2294) [A69]
MI Summer TNM: 2000+ San Francisco (1.2), 28.05.2019
[de Firmian,Nick]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 0-0 6.Nf3 c5 7.d5 e6 8.Be2 exd5 9.cxd5 Re8 [I played 9...Bg4 in a previous game. 10.0-0 Nbd7 11.a4 Re8 1/2-1/2 (34) Askin,D (1958)-Winslow,E (2321) San Francisco 2016 [Winslow,Elliott]] 10.e5 dxe5 11.fxe5 Ng4 12.e6 [12.Bg5 Qb6 (12...f6) 13.0-0 (13.Qd2) 13...Nxe5 (13...Nd7!?; 13...c4+) 14.d6 (14.Nxe5 Bxe5 15.Bc4 Bf5=/+ is very good for Black" (Edouard) (15...Qb4; 15...Qxb2!-/+) 16.Nb5 Nd7 (16...a6?! 17.d6[] axb5= (17...Nd7 18.Nc7 Bd4+ 19.Kh1 Qxd6 20.Nxa8 Rxa8 21.Qb3 Be6=) 18.Bxf7+ Kxf7 19.Rxf5+=) 17.d6 Bxb2 18.Rb1 Ne5 19.Rxb2 Nxc4 20.Rb3 Na5) 14...Qxb2!? (14...Nxf3+ 1-0 (50) Winslow,E-Plagemann,T St. Louis Futurity 1980) 15.Nd5 Bf5!? (15...Nxf3+ 16.Bxf3 Qd4+) ] 12...fxe6 13.Bg5 [13.d6 0-1 (32) Sherwood,P (1659)-Winslow,E (2321) San Francisco 2017 [Winslow,Elliott]; 13.0-0 0-1 (24) Enders,R (1969)-Winslow,E (2004) Des Moines 1968 !!] 13...Qb6 14.Qd2 Na6 [14...c4 15.0-0-0 exd5= 16.Nxd5 Qxb2+ 17.Qxb2 Bxb2+ 18.Kxb2 Rxe2+ 19.Kc3 Nc6 20.Rhe1 Rxe1 21.Rxe1 Bf5 (21...h6!?) 22.h3 Nf2 23.Bh6 Nd3?! (23...Ne4+!? 24.Rxe4 Bxe4 25.Nf6+ Kf7 26.Nxe4 Ke6 should be OK for Black.) 24.Ng5! 1-0 (31) Jobava,B (2704)-Ponkratov,P (2611) Moscow 2012] 15.d6 Bd7 16.h3 Ne5 17.0-0 Nf7 18.Rad1 c4+ 19.Kh1 Rac8 20.Be3 Qc6 21.Ng5 Nxg5 22.Bxg5 Nb4 23.Be7 b5 24.Qf4 Kh8 25.Qh4 Rxe7 26.dxe7 e5 27.Ne4 Nd3 28.Bxd3 cxd3 29.Rxd3 Qc4 30.Rfd1 Be8 31.Qf2 Qe6 Black lost on time 1-0

(3) Shaw,Tenzing (2287) - Clemens,Kristian (1990) [C42]
MI Summer TNM: 2000+ San Francisco (1.3), 28.05.2019
[de Firmian,Nick]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nc4 Nxe4 5.Qe2 Qe7 6.Ne3 Be6 7.b3 c6 8.Bb2 Nd7 9.g3 d5 10.Bg2 0-0-0 11.d3 Nd6 12.Nd2 Rg8N [Predecessor: 12...Nf6 13.0-0-0 g6 14.f4 Bg7 15.Nf3 Rhe8 16.Rhe1 Qc7 17.Qf1 Qa5 18.a4 Nf5 19.Nxf5 Bxf5 20.Ne5 Qc7 21.h3 h5 22.Bf3 Be6 23.g4 hxg4 24.Bxg4 Nxg4 25.hxg4 f6 26.Nxg6 Bxg4 27.Rxe8 Rxe8 28.Re1 Rxe1+ 29.Qxe1 Bf5 30.Qe8+ 1-0 (30) Bashirli,N (2385)-Ozkan,E (2171) Cesme 2018] 13.a4 g6 14.0-0 h5 Somehow Stockfish makes this +-! White's attack is more potent than anything Black has. 15.b4 Bg4 16.Qe1 Bh6 17.Nb3 Rge8 18.Nxg4?! Lets him trade queens. [18.b5! with the attack.] 18...Qxe1 19.Rfxe1 hxg4 20.b5 Rxe1+ 21.Rxe1 Re8 22.Rxe8+ Nxe8 23.h3 cxb5? just loses a pawn 24.axb5 Nd6 25.Bxd5 gxh3 26.c4 Nb6 27.Bf3 Na4 28.Be5 Nf5 29.Bg4 Kd8 30.Bxh3 Bg7 31.Bxg7 Nxg7 32.Kf1 f5 33.Bg2 Kc7 34.Ke2 b6 35.Kd2 Kd6 36.d4 g5 37.Bd5 Ne8 38.Kc2 Nf6 39.Bf3 g4 40.Ba8 f4 41.gxf4 Nh5 42.Nd2 Nxf4 43.Kb3 Nb2 44.Ne4+ 1-0

(4) Kuczek,Kevin (1984) - Wong,Russell (2200) [B02]
MI Summer TNM: 2000+ San Francisco (1.4), 28.05.2019
[de Firmian,Nick]

1.e4 Nf6 2.Nc3 d5 3.exd5 Nxd5 4.Bc4 Nb6 5.Bb3 Nc6 6.d3 Bf5 7.Be3 e6 8.a3 Be7 9.Nf3 0-0 10.h3 Nd5 11.Bd2N [11.Nxd5 exd5] 11...Bf6 12.0-0 Nxc3 13.bxc3 h6 14.Rb1 Na5 15.Ba2 c5 16.Qe2 b6 17.Ne5 Bxe5 18.Qxe5 Qd7 19.Rfe1 c4 20.Qg3 Kh7 21.Rb4 Rac8 22.Qe3 cxd3 23.Rd4 Qe7 24.g4 Bg6 25.cxd3 Qxa3 26.Bc4 Nxc4 27.dxc4 Rfd8 28.h4 Rxd4 29.Qxd4 Qc5 30.h5 Bc2 31.Qf4 Qxc4 32.Qg3 Rd8 33.Be3 Qxc3 34.f4 Rd1 35.Rxd1 Bxd1 36.g5 Bxh5 37.gxh6 gxh6 38.Qf2 Qd3 39.Bd4 Qd1+ 40.Kh2 Qe2 41.Kg3 Qxf2+ 42.Kxf2 Kg6 43.Kg3 Bd1 44.Kh4 Kf5 45.Kg3 f6 46.Be3 h5 47.Bd4 e5 48.fxe5 fxe5 49.Be3 Ke4 50.Kf2 Kd3 51.Bg5 b5 52.Ke1 Bg4 53.Be7 a5 54.Bd8 b4 55.Be7 b3 56.Ba3 Kc2 0-1

(5) Tsodikova,Natalya (2197) - Maser,Thomas (1956) [C73]
MI Summer TNM: 2000+ San Francisco (1.5), 28.05.2019
[de Firmian,Nick]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6 7.0-0 g6 8.c3 Bg7 9.Be3 Nh6 10.Bxh6 Bxh6 11.Qe2 Bb7 12.Nbd2 0-0 13.Nc4 a5 14.Rfd1 Qe8 15.Qc2 Qe6 16.Ne3 Rae8 17.d5 Qf7 18.c4 f5 19.dxc6 Bxc6 20.Nd5 Qd7 21.Nd2 Bxd5 22.cxd5 Bxd2 23.Rxd2 fxe4 24.Re1 Rc8 25.Rxe4 c6 26.dxc6 Rxc6 27.Qb3+ Qf7 28.Qxf7+ Kxf7 29.h4 Ke6 30.g3 d5 31.Re1 Rfc8 32.Rde2 e4 33.f3 Rc2 34.Kf1 Kf5 35.fxe4+ dxe4 36.Rxe4 Rxb2?? 37.Rf4# 1-0

(6) Askin,Michael (1949) - Yan,Rui Yang (2190) [E17]
MI Summer TNM: 2000+ San Francisco (1.6), 28.05.2019
[de Firmian,Nick]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.0-0 0-0 7.d5 exd5 8.Nh4 c6 9.cxd5 Nxd5 10.Nf5 Nc7 11.e4 d5 12.Qg4 [12.Nc3 Bf6 13.exd5 Nxd5 14.Nxd5 cxd5 15.Bf4 Nd7 16.Nd6 Moiseenko,A (2649)-Inarkiev,E (2730) Izmir 2016 ½-½] 12...g6 13.Nxe7+N [13.Bh6 Re8 14.Nxe7+ Qxe7 15.exd5 Nxd5 16.Nd2 1-0 (42) 42, Dolgusheva,I (2027)-Chugaev,K (2056) Novosibirsk 2008] 13...Qxe7 14.Bg5 f6 15.Bh6 Re8 16.exd5 Nxd5 17.Nc3?! [17.Qd4 Nd7 18.Nc3] 17...Nxc3 18.bxc3 Nd7=/+ White doesn't have a whole lot to show for the pawn; two bishops, slightly weak king position... 19.Rfe1 Qf7 20.Bf1 b5 21.f4?! f5 22.Qf3 Nf6-+ At this point that knight outshines either White bishop. [22...a6] 23.Re5? c5 [23...Ng4 24.Bg5 h6] 24.Qd3 c4 25.Qc2 Ng4 Still good 26.Rxe8+ Rxe8 27.Bg5 h6 28.Bh4 Qd5 29.Bg2 Qxg2+ 30.Qxg2 Bxg2 31.Kxg2 Re2+ 32.Kf1 Rxh2 33.Re1 0-1

(7) Ivanov,Aleksandr (2187) - Melville,Cailen (1935) [C01]
MI Summer TNM: 2000+ San Francisco (1.7), 28.05.2019
[de Firmian,Nick]

1.d4 e6 2.c4 b6 3.e4 Bb4+ 4.Bd2 Bxd2+ 5.Qxd2 d5 6.cxd5 exd5 7.e5 Ne7 8.h3 c5 9.Nf3 Ba6 10.Bxa6 Nxa6 11.0-0 Nc7 12.Nc3 a6 13.Rad1 Qd7?? [13...0-0+/= isn't so bad] 14.dxc5 bxc5 15.Ne4!+- Ne6 16.Nd6+ Kf8 17.Nh4 [17.b4! opens lines up for White's "extra" rook] 17...Nd4 [17...Qa4] 18.f4 [18.b4] 18...Nc8?! 19.Ndf5 [19.b4!] 19...Nxf5 20.Nxf5 g6 21.Ne3 Nb6 [>=21...Ne7] 22.f5! d4 23.Ng4 [23.e6!] 23...Qe7 24.b4 Nc4 25.Qh6+ Ke8 26.bxc5 Qxc5 27.fxg6 fxg6 28.Qg7 Rf8 29.Rxf8+ Qxf8 30.Nf6+ 1-0

(8) Lehman,Clarence (1900) - Doyle,Bryon (2186) [C86]
MI Summer TNM: 2000+ San Francisco (1.8), 28.05.2019
[de Firmian,Nick]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 b5 6.Bb3 Be7 7.c3 0-0 8.0-0 d5 9.d3 d4 10.h3 a5N A new, ninth move in this position. [10...Bc5 led to a long, tense battle in Ivanchuk-Leko Monte Carlo rapid 2005: 11.Bg5 Qd6 12.Nbd2 h6 13.Bxf6 Qxf6 14.Bd5 dxc3 15.bxc3 Bd7 16.a4 Rab8 17.Nb3 Bb6 18.axb5 axb5 19.c4 bxc4 20.dxc4 Nd4 21.Nfxd4 Bxd4 22.Nxd4 exd4 23.e5 Qg6 24.Ra3 Rb1 25.Rxb1 Qxb1+ 26.Kh2 c6 27.Be4 Qc1 28.Ra6 c5 29.Rd6 Be6 30.Bd3 Qg5 31.Qe4 g6 32.f4 Qe7 33.Qf3 Rb8 34.Be4 Rd8 35.Rxd8+?! Qxd8 36.Bd5 Qc8 37.Kg3 Kg7 38.Bxe6 Qxe6 39.Qd5 Qf5? (39...Qb6-/+; 39...Qe7-/+) 40.Qd6?? 0-1, Ivanchuk,V (2711)-Leko,P (2749) Monte Carlo rapid 2005a) 40.Qxc5=; b) 40.Qd6 Qd3+-+ (40...g5 41.fxg5 Qxg5+-+; 40...h5-+) 41.Kh2 Qxc4-+; ] 11.a4! b4 12.c4?? A dreadful capitulation, especially after the last move! [12.cxd4 Nxd4 13.Nxd4 exd4 (13...Qxd4 14.Be3 White gets there first: 14...Qd7 15.Nd2 Rd8 16.Nf3! Qxd3? 17.Bxf7+ Kf8 18.Qxd3 Rxd3 19.Nxe5 Rd8 20.f3) 14.Bf4 The one really big weakness is Black's c-pawn.] 12...Nd7-/+ 13.Nbd2 Nc5 14.g4? (On this occasion this backfires!) 14...h5! 15.Nh2 hxg4 16.hxg4 Bg5 17.Bd1 Bf4 18.Ndf3 Bxc1 19.Rxc1 b3!? Perhaps afraid of the queenside locking up -- but it was all happening on the kingside 20.Ra1 Qf6 21.Ne1 Bd7 22.Ng2 g5 23.Qd2 Qh6 24.Ne1 Kg7 25.f3 Rh8 26.Qg2 Nb4 27.Be2 Nxa4 28.Rxa4?! (Perhaps pursuing the fortress dream. Carlsen said somewhere "there are no fortresses," an overstatement for the rest of us. 28...Bxa4 29.Bd1 Na6 30.Rf2 Nc5 31.Nf1 Qh3 32.Ng3 Qxg2+ 33.Rxg2 Bd7 34.Nh5+ Kg6 35.Be2 a4 36.f4? exf4 37.Nf3 f6 38.Nxd4 a3 39.Nxb3 Nxb3 40.bxa3 Nd4 0-1

(9) He,Tianyi (2186) - Rudyak,Felix (1888) [B01]
MI Summer TNM: 2000+ San Francisco (1.9), 28.05.2019
[de Firmian,Nick]

1.e4 d5 2.d3 T.He has one other TNM game from a few years ago, a "normal" Gruenfeld as Black. So what this is about is hard to fathom. 2...dxe4 3.dxe4 Qxd1+ 4.Kxd1 Nc6 [Relevant: 4...e5 5.f3 Bc5 6.Bc4 a5 7.a4 Nd7 8.c3 Ne7 9.Nd2 Nb6 10.Bb3 Bd7 11.Ne2 Nec8 12.Kc2 Nd6 13.Rd1 Ke7 So much for being able to castle. In any case, 0-1 (62) Ivanov,A (2400) -Rakhmanov,A (2669) Sochi 2017.] 5.c3 [5.Be3!?] 5...e5 6.Nd2 Bc5N 7.f3 Be6 8.a4 a5 9.Bb5 [9.Bc4] 9...Nge7 10.Kc2 0-0 "Wrong rook!" [10...0-0-0] 11.Ne2 [11.Bc4] 11...f5 12.b3 Rad8 13.Bc4?! Bxc4 14.bxc4 [14.Nxc4? fxe4] 14...Be3 15.Ng3 f4 16.Ngf1 Bf2 White has his problems. 17.Kd1 An interesting choice of piece to improve! 17...Rf6 [17...Rd7 18.Ke2 Ba7 19.Rb1 Nd8 Black could play ...c5, ...b6 and put it all on the kingside] 18.Ke2 Bb6?! 19.Ba3 Ng6?! [19...Nc8] 20.Rb1 Rb8 21.g3?! [21.c5 Ba7 22.Nc4] 21...Nf8? [Typical computer calculation: 21...Ba7 22.c5 Nd8 23.Nc4 Bxc5 24.Bxc5 Rc6 25.Ba7 Ra8 26.Nxa5 Ra6 27.Nxb7 Nxb7 28.Rxb7 R8xa7 29.Rxa7 Rxa7=] 22.Rb5 Ne6 23.Nb3?! [23.c5+/-] 23...g5? [23...Bd4! 24.Bb2 Ba7 25.c5 Rg6 26.g4 h5] 24.c5 Ba7 25.g4+/- b6 26.h4 Rh6 27.h5

27...Nxc5 28.Nxc5 [28.Bxc5 bxc5 29.Rxb8+ intending Nfd2-Nc4, Rd1, and it's pawn season.] 28...bxc5 29.Nd2 Nd8 30.Nc4 Rxb5 31.axb5 Nf7 32.Nxa5 Nd6 33.c4 Bb6 34.Nc6 Nxc4 35.Bxc5! Nd6 36.Bxd6 cxd6 37.Ne7+ Kf7 38.Nd5 Bc5 39.b6 Re6 40.Ra1 Re8 41.Ra7+ Kf8 42.Rxh7 1-0

(10) Ricard,Bruce (1875) - Kim,Isaiah (2139) [B12]
MI Summer TNM: 2000+ San Francisco (1.10), 28.05.2019
[de Firmian,Nick]

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 [4.Nf3 e6 5.Be2] 4...e6 5.g4 Bg6 6.Nge2 This still gets played, but has mostly been supplanted by 4. Nf3 6...Bb4?! 7.h4 Be4 8.Rh3 h6 9.a3 Bxc3+ 10.Nxc3 Bh7 11.Be3 Ne7 12.Bd3 [12.h5 before Black can play it] 12...Bxd3 13.Qxd3 Nd7 14.0-0-0 [14.h5] 14...b5 15.f4 h5 16.Rg1 hxg4 17.Rxg4 Nf5 18.Bf2 Nb6 19.h5 Nc4 20.Ne2 Qa5 21.Ng3 Nfe3 22.Rxg7 b4 23.Kb1 bxa3 24.b3 a2+ 25.Ka1 Qa3 26.bxc4 Qc1+ 27.Kxa2 Rb8 28.Qc3 Qb1+ 29.Ka3 Nxc4+ 30.Ka4 Qb5# 0-1

(11) Tsegmed,Mugi (2125) - Argo,Guy (1874) [A85]
MI Summer TNM: 2000+ San Francisco (1.11), 28.05.2019
[de Firmian,Nick]

1.d4 f5 2.c4 e6 3.Nc3 Bb4 4.Bd2 Nf6 5.e3 0-0 6.Nf3 d6 7.Be2 Bxc3 8.Bxc3 Ne4 9.Rc1 Nd7 10.0-0 Qf6 11.Nd2 Nxc3 12.Rxc3 e5 13.dxe5 dxe5 14.Nf3 Rd8 15.Qd5+ Kf8 16.Rd1 c6? [16...e4 17.Ne5 c6 18.Qd4 Ke8 walks it down close to equality.] 17.Qa5 b6 [17...e4 18.Rd6! Qe7 (18...Qxd6?? 19.Qxd8+ Kf7 20.Ng5+ Kg6 21.h4) 19.Nd4! (is even better than 19.Qxf5+) 19...Qxd6 20.Qxd8++- Kf7 21.c5! (21.Nxf5) ] 18.Qa3+ c5 19.Rcd3! Ke7? [19...e4[] 20.Rd6 Qe7 when the knight doesn't have to move! 21.Qa4! Rb8 (21...exf3? 22.Bxf3 Bb7 23.Rxd7 Bxf3 24.gxf3 Rxd7 25.Rxd7 Qg5+ 26.Kf1 White seems to be well ahead and winning.) 22.h4! exf3 (22...h6 23.Ne1 Qxh4?! 24.g3 Qe7 25.Bh5 Never free.) 23.Bxf3 a5 24.Bc6 Very annoying! But better than the game:] 20.Rd6 Qxd6 21.Rxd6 Kxd6 22.Qd3+ Kc7 23.Qxf5 Nf6 [23...Re8 24.Qf7 Bb7 25.Ng5] 24.Qxe5+ Rd6 25.Ng5 Kd7 26.Bf3 [26.Nxh7] 26...Bb7 27.Nf7 Re6 28.Bxb7 A humane winning move. [Computers "prefer" 28.Bg4 Nxg4 29.Qxg7 Ke8 30.Qxg4 (30.Ng5?? Re7-+) 30...Kxf7 31.Qf5+ Rf6 32.Qxh7+ Ke8 33.Qxb7] 28...Rxe5 29.Nxe5+ Ke6 30.Bxa8 Kxe5 31.Kf1 [31.f4+!] 1-0

(12) Krasnov,Steven (1870) - Trattner,Andrew (2052) [A47]
MI Summer TNM: 2000+ San Francisco (1.12), 28.05.2019

1.d4 b6 2.Nf3 Bb7 3.Nbd2 Nf6 4.g3 e6 5.Bg2 Be7 6.0-0 0-0 7.b3 c5 8.e3 Qc7 9.Bb2 cxd4 10.exd4 b5 11.Re1 b4 12.a3 a5 13.axb4 axb4 14.Nc4 Rxa1 15.Bxa1 Rc8 16.Nfe5 Bxg2 17.Kxg2 d6 18.Nd3 Nd5 19.Qd2 Qb7 20.f3 Nd7 21.Rc1 Ra8 22.Ne3 Bg5 23.Nf4 Nxf4+ 24.gxf4 Bxf4 25.Re1 Nf6 26.Qd3 Bxe3 27.Qxe3 Ra2 28.Qc1 Qc6 29.Bb2 h6 30.Qb1 Ra5 31.Bc1 Qc3 32.Be3 Nd5 33.Qc1 Ra2 34.Re2 Nxe3+ 35.Qxe3 Qxe3 36.Rxe3 Rxc2+ 37.Kg3 Rc3 38.Kf2 Rxe3 39.Kxe3 d5 0-1

(13) Boldi,Ethan (2044) - Busch,Jonah (1865) [B03]
MI Summer TNM: 2000+ San Francisco (1.13), 28.05.2019
[de Firmian,Nick]

1.e4 Nf6 2.e5 Nd5 3.c4 [3.d4 d6 4.Nf3 g6 5.Be2 Bg7 6.0-0 0-0 7.h3 Nc6 8.exd6 cxd6 9.c4 Nb6 10.Nc3 Bf5 1-0 (39) Gomez Tormos,M-Huerta Martinez,A Valencia 1995] 3...Nb6 4.Nc3 d6 5.exd6 cxd6 6.d4 g6 7.h3 [7.Be3 Bg7 8.Rc1] 7...Bg7 8.Nf3 Nc6 9.Be2 Bf5 10.a3 0-0 11.0-0 e5 12.d5 [12.Be3 Re8? (12...d5!) 13.d5 Ne7 14.Rc1 (14.g4+/-) 14...Rc8 15.b3 0-1 (37) Petrenko,S (2182)-Makropoulou,M (2244) Braila 2013; 12.Bg5!] 12...Nd4 [12...Ne7!?] 13.Nxd4 exd4 14.Nb5 Re8?! [14...Qf6! 15.a4 a6 (15...Nd7 16.g4 a6 17.Nxd6+/=) 16.Na3 Rfe8] 15.Bd3 a6 16.Nxd4 Bxd4 [16...Bxh3 1-0 (39) Gomez Tormos,M-Huerta Martinez,A Valencia 1995] 17.Bxf5 Qf6 18.Bd3 Rac8!= [18...Bxb2!? 19.Bxb2 Qxb2 20.Bxg6 hxg6 21.Rb1 Qxa3 22.Rxb6 Rac8 23.Rxb7 Rxc4=] 19.Qb3 Nd7 20.Rb1 Nc5 21.Qd1 Nxd3 22.Qxd3 Rc7 23.b3 Rce7 24.Bd2 Qh4? [24...Re2] 25.Bc3 [25.Qf3!?] 25...Bb6 26.Rbd1

26...Re3?! 27.fxe3 Rxe3 28.Qxe3 Bxe3+ 29.Kh1 f5 30.Bb4 Qf6 31.Rde1 Bc5 32.Bxc5 dxc5 33.Rd1 Qd6 34.Rfe1 Kf7 35.b4 cxb4 36.axb4 b6 37.c5 bxc5 38.bxc5 Qxc5 39.d6 Qc8 40.d7 Qd8 41.Re8 1-0

(14) Xu,Jayden (1855) - Gaffagan,Steve (2035) [A65]
MI Summer TNM: 2000+ San Francisco (1.14), 28.05.2019
[de Firmian,Nick]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nge2 0-0 6.Ng3 c5 7.d5 e6 8.Be2 exd5 9.cxd5 a6 10.a4 Re8 11.0-0 Nbd7 12.f4 Rb8 13.Be3 b6 14.Qd2 b5 15.axb5 axb5 16.Bxb5 Ng4 17.Nge2 Qb6 18.Rfd1 Re7

19.Rab1? [19.Ra4; 19.h3 Nxe3 20.Qxe3 f5 21.e5 dxe5 22.d6] 19...Ndf6-+ 20.Ba4 [20.Qd3 Nxe4 21.Nxe4 Bf5 22.N2g3 Bxe4 23.Nxe4 f5] 20...Nxe4 21.Bc2?? Nxd2 0-1

(15) Senthilkumar,Pranav (2030) - Hakobyan,Sos (1830) [E16]
MI Summer TNM: 2000+ San Francisco (1.15), 28.05.2019

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.g3 Bb7 5.Bg2 d5 6.0-0 Nbd7 7.b3 g6 8.Bb2 Bg7 9.Nc3 c6 10.Ba3 Qc7 11.Rc1 dxc4 12.e4 Ba6 13.e5 Nd5 14.Ne4 c5 15.Nd6+ Kf8 16.bxc4 Nb4 17.Bxb4 cxb4 18.Ng5 Rb8 19.Ndxf7 Ke7 20.Nxh8 Rxh8 21.Qa4 Nb8 22.Qxb4+ Kd7 23.Bh3 Re8 24.Nxe6 Rxe6 25.d5 Ke8 26.Bxe6 Nd7 27.Qa4 Bc8 28.d6 Qb8 29.c5 b5 30.Bxd7+ Bxd7 31.Qb3 Bh3 32.Qg8+ Bf8 33.e6 Qb7 34.d7+ 1-0

(16) Persidsky,Andre (1876) - Diaz,Conrado (2345) [D12]
MI Summer TNM: 2000+ San Francisco (1.16), 28.05.2019
[de Firmian,Nick]

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 Bf5 5.Nf3 e6 6.Bd3 Bg6 7.0-0 Nbd7 8.Ne5 Bd6 9.f4 0-0 10.b3 a6 11.Bb2 Qe7 12.Rc1 Rac8 13.Qe2 Bb4 14.Nb1 Bxd3 15.Qxd3 Ne4 16.a3 Bd6 17.Nxd7 Qxd7 18.c5 Bc7 19.Nc3 f5 20.Rc2 g5 21.g3 Rf6 22.Nxe4 fxe4 23.Qe2 gxf4 24.gxf4 Rg6+ 25.Kh1 Qg7 26.Qf2 Kh8 27.Rg1 Rg8 28.Rxg6 Qxg6 29.Rc1 Qh5 30.Rg1 Rxg1+ 31.Kxg1 Qd1+ 32.Kg2 Qxb3 33.Qh4 Qxb2+ 34.Kh3 Kg8= 35.Qg5+ [35.Qe7] 35...Kf7 36.Qh5+ Kf8 37.Qh6+ Ke7 38.Qxh7+ Kd8 39.Qg8+ Kd7 40.Qf7+ Kc8 41.Qe8+ Bd8 42.Qxe6+ Kb8 43.Qe8 Kc7 44.Qe5+ Kd7 45.Qd6+ Ke8 46.Qe6+ Be7 47.Qc8+ Kf7 48.Qf5+ Kg7 49.Qg4+

49...Kf6?? [49...Kf7; 49...Kf8; 49...Kh8; 49...Kh7?? 50.Qd7+-] 50.f5! Kf7 [50...Bf8 51.Qg6+ Ke7 52.Qe6+ (52.f6+ Ke6 53.Qe8+) 52...Kd8 53.Qf7] 51.Qg6+ Kf8 52.Qh6+ [52.f6! Bxf6 53.Qxf6+ Ke8 54.Qf4 Kd7 (54...Qxa3 55.Qb8+) 55.Kg4 Qxa3 56.h4!+-] 52...Ke8 53.Qg6+ Kd8 54.Qg8+ Kc7 55.Qf7 Kd8 56.Qg8+ Kc7 57.Qf7 Kd8 58.Qg8+?? [58.f6!+-] 58...Kc7 59.Qf7 1/2-1/2

(17) Babayan,Gagik (1865) - Donaldson,Kyle (1645) [A00]
MI Summer TNM: 1600-1999 San Francisco (1.17), 28.05.2019
[de Firmian,Nick]

0-1 Forfeit 0-1

(18) Bradley,Christopher Nolan (1634) - McKellar,Daniel (1844) [A11]
MI Summer TNM: 1600-1999 San Francisco (1.18), 28.05.2019
[de Firmian,Nick]

1.Nf3 d5 2.c4 c6 3.g3 Nf6 4.Bg2 Bf5 5.0-0 dxc4 6.Na3 Qc8 7.Re1 b5 8.b3 cxb3 9.Qxb3 Be6 10.Qc2 a6 11.Ne5 Bd7 12.Nxd7 Qxd7 13.d3 Ra7 14.Bf4 e5 15.Bxe5 Bd6 16.Bxf6 gxf6 17.Nb1 Be5 18.Nc3 b4 19.Ne4 Bxa1 20.Rxa1 Qd4 21.Rc1 Rc7 22.e3 Qd8 23.Qc5 Rd7 24.d4 Qe7 25.Qb6 0-0 26.Nc5 Ra7 27.Qxb4 a5 28.Qc4 Rc8 29.Bh3 Rd8 30.Qe2 Kh8 31.Bf5 Rg8 32.Rb1 Ra8 33.Qh5 Rg7 34.Rb7 Qf8 35.a4 Qg8 36.h4 Rg6 37.Bxg6 Qxg6 38.Qxg6 fxg6 39.f4 f5 40.Kf2 Na6 41.Nxa6 Rxa6 42.Kf3 Ra8 43.Rb6 Rc8 44.Ra6 c5 45.Rxa5 cxd4 46.exd4 Rc3+ 47.Kg2 Rc4 48.d5 Rd4 49.Ra7 Rxd5 50.a5 Rd2+

51.Kh3? Ra2? [51...h5!=] 52.a6? Ra3? 53.h5! Kg8 54.h6 Ra4 55.Rg7+ Kf8 56.a7 g5 57.fxg5 f4 58.gxf4 Ra6 59.Rxh7 Kg8 60.Rb7 Ra3+ 1-0

(19) Ochoa,Jason (1738) - Rakonitz,David (1617) [A30]
MI Summer TNM: 1600-1999 San Francisco (1.19), 28.05.2019
[de Firmian,Nick]

1.Nf3 Nf6 2.c4 e6 3.g3 b6 4.Bg2 Bb7 5.0-0 Be7 6.b3 c5 7.Bb2 0-0 8.Nc3 Nc6 9.d4 d5 10.cxd5 Nxd5 11.Nxd5 Qxd5? [11...exd5+/=] 12.Ne5 Qd6 13.dxc5 Qxd1 14.Rfxd1 Nxe5 15.Bxb7 Rab8?! 16.c6 Bf6 17.Rd2 Nxc6 18.Bxc6 Bxb2 19.Rxb2 Rbc8 20.Bf3 Rc7 21.Rd1 Rfc8 22.Rbd2 Kf8 23.Rd8+ Ke7 24.Rxc8 Rxc8 25.Rd3 Rc1+ 26.Kg2 Rc2 27.a4 Rb2 28.e3 Rc2 29.Bb7 Rc7 30.Ba6 e5 31.h4 Rc2 32.Bb5 Rc7 33.f4 e4 34.Rd4 f5 35.Rd5 g6 36.Re5+ Kf6 37.Bc4 Re7 38.Rxe7 Kxe7 39.Bg8 h6 40.Bc4 a5 41.Kf2 Kf6 42.Bd5 g5 43.fxg5+ hxg5 44.h5 1-0

(20) Cohee,Jim (1606) - Porlares,Teodoro (1728) [B12]
MI Summer TNM: 1600-1999 San Francisco (1.20), 28.05.2019

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nf3 e6 5.Be2 c5 6.c3 Nd7 7.0-0 h6 8.Na3 a6 9.Nc2 Ne7 10.Ne3 Bh7 11.Re1 Ng6 12.Bd3 Be7 13.g3 0-0 14.Ng2 Rc8 15.Nf4 cxd4 16.cxd4 Nxf4 17.Bxh7+ Kxh7 18.Bxf4 Qb6 19.Qd3+ Kg8 20.Re2 Rc6 21.Rc2 Rfc8 22.Rac1 g5 23.Be3 Nf8 24.Rxc6 Rxc6 25.Rxc6 Qxc6 26.Qc3 Qxc3 27.bxc3 b5 28.Kf1 Kg7 29.Ke2 Nd7 30.Kd3 Kg6 31.g4 Nb6 32.Nd2 f5 33.f3 f4 34.Bf2 Ba3 35.Nb3 Nc4 36.Nc5 Bxc5 37.dxc5 Nxe5+ 38.Ke2 Nc6 39.Kd3 e5 40.Bg1 Kf6 41.Bf2 Ke6 42.Be1 e4+ 43.fxe4 Ne5+ 44.Ke2 dxe4 45.h3 Kd5 0-1

(21) Perlov,Alexander (1724) - Casares,Nick (1603) [E01]
MI Summer TNM: 1600-1999 San Francisco (1.21), 28.05.2019
[de Firmian,Nick]

1.d4 d5 2.c4 c6 3.g3 The Catalan against the Slav. Probably an invitation for Black grab: 3...Nf6 [3...dxc4] 4.Bg2 Nbd7 5.Qc2 e6 6.Nf3 h6 7.0-0 Bd6 8.Rd1 Ne4 9.Nc3 f5 10.b3 Qf6 11.e3 Nf8 12.Bb2 Bd7 13.Rac1 g5 14.Ne5 Ng6 15.f4 Ke7 16.c5 Bc7 17.Rf1 g4 18.Nxe4 fxe4 19.Nxg4 Qf5 20.Ne5 h5 21.Qe2 Rag8 22.b4 a6 23.a4 Be8 24.Ba3 Nf8 25.b5 axb5 26.axb5 Bxe5 27.fxe5 Qg5 28.Qf2 Nh7 29.Qf4 Qg7 30.Bb4 Rf8 31.Qh4+ Ng5 32.Ba5 Kd7 33.bxc6+ bxc6 34.Kh1 Bf7 35.Rb1 Rb8 36.Bb6 Qh6 37.Rf6 Qg7 38.Rbf1 Rbf8 39.Qf4 Nh7 40.Rxf7+ Rxf7 41.Qxf7+ Qxf7 42.Rxf7+ Ke8 43.Ra7 1-0

(22) Kaplan,Glenn (1568) - Tamondong,Cesar (1715) [A26]
MI Summer TNM: 1600-1999 San Francisco (1.22), 28.05.2019
[de Firmian,Nick]

1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.d3 0-0 6.Nf3 d6 7.0-0 Nc6 8.Bg5 h6 9.Bd2 Be6 10.Qc1 Kh7 11.a3 Qd7 12.Rb1 Bh3 13.b4 Bxg2 14.Kxg2 Nd4 15.Nxd4 exd4 16.Nd1 c5 17.b5 b6 18.e3 dxe3 19.Nxe3 d5 20.Qc2 Rad8 21.Rfd1 Rfe8 22.Kg1 d4 23.Ng2 g5 24.Re1 Rxe1+ 25.Rxe1 Re8 26.h4 Rxe1+ 27.Bxe1 Qh3 28.f3 Qe6 29.hxg5 hxg5 30.Qc1 Bh6 31.Bd2 Qf5 32.Qf1 Nd7 33.f4 f6 34.Qe2 Nf8 35.fxg5 fxg5 36.Qe7+ Kg6 37.Qe8+ Qf7 38.Qe4+ Kg7 39.Qe5+ Kg8? 40.Bxg5 Qh5 41.Qd5+ Kh7 42.Qe4+ Ng6 43.Bxh6 Kxh6 44.Nf4 Qd1+ 45.Kh2 Nxf4 46.Qxf4+ Kg7 47.Qg5+ Kf7 48.Qf5+ Kg7 49.g4 Qd2+ 50.Kg3 Qe3+ 51.Kh4 Qe1+ 52.Kg5 Qe3+ 1/2-1/2

(23) Mercado,Adam (1708) - Agdamag,Samuel Zamora (1526) [B01]
MI Summer TNM: 1600-1999 San Francisco (1.23), 28.05.2019

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.Nf3 Bg4 5.Bc4 e6 6.0-0 Nd7 7.d4 c6 8.Be2 Ngf6 9.Bf4 Be7 10.h3 Bxf3 11.Bxf3 0-0 12.Ne4 Qf5 13.Nxf6+ Nxf6 14.Be5 h6 15.Re1 Rfd8 16.Be2 Qh7 17.Bd3 Qh8 18.Re3 Kf8 19.Rf3 Ke8 20.c3 Rd7 21.b4 a5 22.b5 Nd5 23.bxc6 bxc6 24.Qa4 Rc8 25.Ba6 Rcd8 26.Qxc6 Kf8 27.Qxe6 f6 28.Bb5 Rb7 29.Bc6 Rb6 30.c4 Nb4 31.d5 Nxc6 32.dxc6 Qg8 33.Qxg8+ Kxg8 34.Bc7 Rbb8 35.Bxd8 Rxd8 36.Rd3 Rc8 37.Rd7 Kf8 38.Re1 Bb4 39.Re6 Bc3 40.c7 Re8 41.Rxe8+ Kxe8 42.c8Q# 1-0

(24) Carron,Joel (1516) - Mays,Jerry (1700) [C50]
MI Summer TNM: 1600-1999 San Francisco (1.24), 28.05.2019

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Be7 5.Nxd4 Nf6 6.Nxc6 dxc6 7.Qxd8+ Bxd8 8.0-0 0-0 9.Nc3 b5 10.Bd3 Nd7 11.Be3 Be7 12.a3 Ne5 13.Be2 Be6 14.b3 Ng4 15.Bc1 Bd6 16.h3 Nf6 17.Bd3 a5 18.Bb2 Be5 19.Nd1 Bxb2 20.Nxb2 Nd7 21.Rfe1 Ne5 22.Bf1 Rad8 23.Nd3 Rxd3 24.Bxd3 Nxd3 25.cxd3 Bxb3 26.Rac1 Rd8 27.Rxc6 Rxd3 28.Rxc7 g6 29.Re3 Rd1+ 30.Kh2 a4 31.Rc5 Bc4 32.f4 Rb1 33.f5 Rb3 34.f6 h5 35.Rf3 Kh7 36.e5 Be2 37.Rf2 Bc4 38.e6 Bxe6 39.Rf3 Bc4 40.Re5 Kh6 41.h4 Be6 42.Rxb3 Bxb3 43.Rxb5 Bc4 44.Rc5 Bb3 45.Kg3 Be6 46.Kf4 Bb3 47.Ke5 g5 48.g3 Kg6 49.Rc8 Be6 50.Rg8+ Kh6 51.hxg5+ Kh7 52.Rg7+ Kh8 53.Kd6 Bb3 54.Ke7 Bc4 55.Rxf7 Bxf7 56.Kxf7 1-0

(25) Cortinas,Marty (1663) - Sablon,Hadrien [B11]
MI Summer TNM: 1600-1999 San Francisco (1.25), 28.05.2019

1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bh5 5.d4 dxe4 6.Nxe4 Nd7 7.Be3 Ngf6 8.Ng3 Bg6 9.Bd3 e6 10.0-0 Bd6 11.c3 Qc7 12.Bxg6 hxg6 13.Qc1 Nd5 14.Ne4 Be7 15.Bg5 f6 16.Bh4 Nf4 17.Bg3 g5 18.Qe3 Nb6 19.Nc5 Bxc5 20.dxc5 Nbd5 21.Qe4 e5 22.c4 Ne7 23.Bxf4 gxf4 24.Rad1 Rd8 25.Rxd8+ Qxd8 26.Qc2 0-0 27.Rd1 Qc8 28.Qd3 Nf5 29.Qd7 Qxd7 30.Rxd7 Rf7 31.Rd8+ Kh7 32.Nd2 Nd4 33.Ne4 Re7 34.Kf1 f5 35.Nd6 e4 36.Nc8 Ne6 37.Nxe7 Nxd8 38.Nxf5 Ne6 39.b4 b6 40.cxb6 axb6 41.Nd6 e3 42.fxe3 fxe3 43.a4 Kg6 44.a5 bxa5 45.bxa5 Kf6 46.a6 Nc7 47.a7 Ke5 48.Ne8 Na8 49.Nxg7 Kf6 50.Nh5+ Ke5 51.g4 Kd4 52.Ke2 Kxc4 53.Kxe3 Kd5 54.Nf4+ Ke5 55.Nd3+ Kf6 56.Kf4 1-0

(26) Parekh,Raj - Kim,Andy (1661) [B11]
MI Summer TNM: 1600-1999 San Francisco (1.26), 28.05.2019

1.e4 c6 2.Nc3 d5 3.Qf3 d4 4.Na4 Nf6 5.c4 e5 6.Nh3 Bg4 7.Qg3 Nbd7 8.f3 Bh5 9.d3 Qa5+ 10.Bd2 Qxa4 11.f4 exf4 12.Qxf4 Bb4 13.b3 Bxd2+ 14.Qxd2 Qa3 15.Nf4 a5 16.Kf2 Qd6 17.g3 0-0 18.Bh3 Bg4 19.Bg2 Ne5 20.h3 Bd7 21.g4 Ng6 22.Nxg6 fxg6 23.Bf3 Nxg4+ 24.hxg4 Bxg4 25.Qd1 Rxf3+ 26.Qxf3 Bxf3 27.Kxf3 Rf8+ 28.Ke2 Qg3 29.Raf1 Qe3+ 30.Kd1 Qxd3+ 31.Ke1 Qb1+ 32.Kd2 Rxf1 33.Rxf1 Qxf1 34.e5 d3 35.e6 Qe2+ 36.Kc3 d2 37.e7 d1Q 38.e8Q+ Qxe8 39.b4 Qe5# 0-1

(27) Latourette,Nicholas (1585) - Dubensky,Walt (1154) [C44]
MI Summer TNM: U1600 San Francisco (1.27), 28.05.2019

1.e4 Nc6 2.Nf3 e5 3.d4 f6 4.d5 Na5 5.Bd2 Nc4 6.Bxc4 Bd6 7.0-0 b6 8.Nc3 Ne7 9.Be3 Bb7 10.Nb5 Nc8 11.Nxd6+ Nxd6 12.Bb3 Nxe4 13.Nd2 Nd6 14.f4 e4 15.f5 Nxf5 16.Rxf5 1-0

(28) Badgett,James (1119) - Ross,Max (1574) [C55]
MI Summer TNM: U1600 San Francisco (1.28), 28.05.2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.d3 Nf6 5.Be3 Be7 6.0-0 d6 7.a3 0-0 8.Nh4 Nxe4 9.Ng6 Nf6 10.Nxf8 Qxf8 11.Nc3 Bf5 12.f3 a6 13.b4 Rd8 14.Ne2 d5 15.Ba2 d4 16.Bd2 Bd6 17.Qe1 b5 18.f4 e4 19.Ng3 e3 20.Bc1 Bg4 21.Bb2 Qe8 22.c3 e2 23.Rf2 Qe3 24.Bc1 Qxd3 25.Bb2 Ne4 26.Nxe4 Qxe4 27.Bb1 d3 28.Bc1 Be7 29.Qd2 e1Q+ 30.Qxe1 Qxe1+ 31.Rf1 Qxc3 32.Ra2 d2 33.Bxd2 Rxd2 34.Rxd2 Qxd2 0-1

(29) Fernicola,Michael (1554) - Thibault,William (1062) [D37]
MI Summer TNM: U1600 San Francisco (1.29), 28.05.2019
[de Firmian,Nick]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Bf4 Nf6 5.Nf3 Bd6 6.Bxd6 Qxd6 7.e3 c6 8.Be2 dxc4 9.Bxc4 Nbd7 10.e4 Qc7 11.0-0 0-0 12.Qd3 Rd8 13.e5 Nxe5?? 14.Nxe5 b5 15.Bb3 Qb6 16.Rfd1 Bb7 17.Qe3 Rac8 18.Ne4 Nxe4 19.Qxe4 c5 20.Qf4 Qc7 21.dxc5 Bc6 22.Qe3 Rxd1+ 23.Rxd1 Qe7 24.Nxc6 Rxc6 25.h3 Rxc5 26.Qxc5 Qxc5 27.Rd8+ Qf8 28.Rxf8+ Kxf8 29.f4 Ke7 30.a3 a5 31.Bc2 f5 32.b4 axb4 33.axb4 Kd6 34.Bd3 e5 35.fxe5+ Kxe5 36.Bxb5 f4 37.Kf2 g5 38.Kf3 h5 39.Bc6 1-0

(30) Robertson,Wade (1042) - Starr,Albert (1545) [C42]
MI Summer TNM: U1600 San Francisco (1.30), 28.05.2019

1.e4 e5 2.Nf3 Nf6 3.Bc4 Nxe4 4.Nxe5 d5 5.Bd3 Bd6 6.Bxe4 dxe4 7.Nc4 Be7 8.Nc3 f5 9.Qh5+ g6 10.Qe2 Nc6 11.0-0 Nd4 12.Qd1 0-0 13.Ne2 Be6 14.Na3 Nxe2+ 15.Qxe2 c6 16.b3 Bf6 17.c3 b5 18.Nc2 a5 19.Rb1 a4 20.Rd1 axb3 21.axb3 Ra2 22.Nb4 Qa8 23.Nxa2 Qxa2 24.Rb2 Qa6 25.d4 Bd5 26.Bh6 Rd8 27.Ra2 Qb7 28.Rb1 Qf7 29.Bd2 Bxb3 30.Ra3 Bc4 31.Qe3 Bd3 32.Rba1 Qd5 33.Ra8 Bc4 34.Rxd8+ Qxd8 35.Ra7 b4 36.Qh6 Bf7 37.Rxf7 Kxf7 38.Qxh7+ Bg7 39.Bh6 Qh8 40.Qxh8 Bxh8 41.Bd2 Ke6 42.Kf1 Kd5 43.Ke2 bxc3 44.Bxc3 Bxd4 45.Bxd4 Kxd4 46.Kd2 g5 47.h3 f4 48.Ke2 c5 49.g3 c4 50.gxf4 gxf4 51.h4 Ke5 52.f3 e3 53.h5 Kf6 54.h6 Kg6 55.Kf1 0-1

(31) Chan,John (1530) - Ahrens,Richard (1040) [D02]
MI Summer TNM: U1600 San Francisco (1.31), 28.05.2019

1.d4 d5 2.Nf3 e6 3.h3 Nf6 4.c3 Nc6 5.Bg5 Be7 6.Nbd2 0-0 7.e3 Ne4 8.Bf4 Bd6 9.g3 Bxf4 10.gxf4 f5 11.h4 Bd7 12.Be2 a6 13.Qc2 b5 14.a3 Na5 15.Nxe4 dxe4 16.Ne5 Be8 17.0-0-0 Qd5 18.c4 bxc4 19.Nxc4 Rb8 20.b4 Nxc4 21.Bxc4 Qd6 22.d5 e5 23.fxe5 Qxe5 24.d6+ Kh8 25.dxc7 Qxc7 26.Rd4 Bb5 27.h5 Qe5 28.Kb1 Rbc8 29.Qb3 Bxc4 30.Rxc4 Qd5 31.Rhc1 Rxc4 32.Qxc4 Qd3+ 33.Qxd3 exd3 34.Rd1 Rd8 35.Rd2 g5 36.hxg6 hxg6 37.Kb2 g5 38.Kc3 Rc8+ 39.Kxd3 Rd8+ 40.Ke2 Rxd2+ 41.Kxd2 Kg7 42.a4 Kf7 43.Kc3 Ke6 44.Kd4 Kd6 45.b5 a5 46.Kc4 f4 47.exf4 gxf4 48.f3 Kc7 49.Kc5 Kb7 50.b6 Ka6 51.b7 Kxb7 52.Kb5 Ka7 53.Kxa5 Kb7 54.Kb5 Ka7 55.a5 Kb7 56.Kc5 Ka6 57.Kd5 Kxa5 58.Ke5 Kb6 59.Kxf4 Kc7 1-0

(32) Dunlap,Steven (1027) - Simpkins,Jerry (1505) [D37]
MI Summer TNM: U1600 San Francisco (1.32), 28.05.2019
[de Firmian,Nick]

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Ne4 5.Nxe4 dxe4 6.Ne5 Nc6 7.Qc2 Qxd4 8.Nxc6 bxc6 9.a3 f5 10.Be3 Qf6 11.g3 Bd6 12.Bg2 c5 13.Rd1 Rb8 14.b4 cxb4 15.0-0 bxa3 16.c5 Be5 17.Qa4+ Kf7 18.Qxa7 Bb7 19.Rd7+ Kg6 20.Qxa3 Bc6 21.Rd2 Ra8 22.Qc1 Ra1 23.Qc4 Rxf1+ 24.Bxf1 Bd5 25.Qa4 h5 26.h4 Kh7 27.Bg5 Qg6 28.e3 Ra8 29.Qd1 Ra1 30.Qe2 Qe8 31.f4 exf3 32.Qd3 Bxg3 33.Qc3

33...Rd1! 34.Rxd1 f2# 0-1

(33) Sachs-Weintraub,Julian (1416) - Cowgill,Jackie (1005) [A05]
MI Summer TNM: U1600 San Francisco (1.33), 28.05.2019
[de Firmian,Nick]

1.Nf3 Nf6 2.g3 e6 3.Bg2 Be7 4.Nc3 d5 5.d4 c5 6.e3 cxd4 7.exd4 0-0 8.Bf4 h6 9.0-0 Bd7 10.b3 Nc6 11.Ne2 a5 12.c4 Rc8 13.cxd5 Nxd5 14.Ne5 Nxf4 15.Nxf4 Bd6 16.Re1 Bxe5 17.dxe5 Qc7 18.Rc1 Qb8

19.Qxd7 Rfd8 20.Bxc6 bxc6 21.Qe7 Rc7 22.Qh4 g5 23.Qg4 Kf8 24.Nh5 Qb6 25.Qe4 Rd2 26.Re2 Rxe2 27.Qxe2 Qb4 28.Qd3 Rc8 29.Qh7 Qd2 30.Rf1 Ke7 31.Qxh6 Rg8 32.Qf6+ Kd7 33.Qxf7+ 1-0

(34) Sullivan,George (979) - James,Charles (1404) [D07]
MI Summer TNM: U1600 San Francisco (1.34), 28.05.2019
[de Firmian,Nick]

1.d4 d5 2.Nf3 Nc6 3.e3 Nf6 4.c4 Bf5 5.b3 e6 6.Nc3 a6 7.Be2 Be7 8.0-0 0-0 9.Bb2 b6 10.cxd5 exd5 11.Ne5 Qd6 12.Nxc6 Qxc6 13.f3 Be6 14.Bd3 Qd7 15.h3 c5 16.Be2 cxd4 17.exd4 Nh5 18.Qe1 Nf4 19.Kh1

19...Bxh3 20.gxh3 Qxh3+ 0-1

(35) Allen,Tom (1400) - Soffer,Josiah (806) [C44]
MI Summer TNM: U1600 San Francisco (1.35), 28.05.2019
[de Firmian,Nick]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 Nf6 5.Bc4 Bd6 6.cxd4 Nxe4 7.Bd5 Nf6 8.Nc3 Nxd5 9.Nxd5 0-0 10.0-0 Re8 11.a3 Be7 12.b4 d6 13.Bd2 Be6 14.Nc3 Bg4 15.Be3 Bxf3 16.Qxf3 Bg5 17.Bxg5 Qxg5 18.Nd5 Nxd4 19.Qd3 Qxd5 20.Kh1 c6 21.Rad1 Nb5 22.Qg3

22...Rad8 23.Rxd5 Rd7 24.a4 Nc7 25.Rdd1 Rde7 26.Qxd6 Nd5 27.h3 Re6 28.Qg3 Nxb4 29.Qc7 Nc2 30.Rd8 Rxd8 31.Qxd8+ Re8 32.Qxe8# 1-0

(36) Serra,Owen (739) - Olson,David (1400) [C41]
MI Summer TNM: U1600 San Francisco (1.36), 28.05.2019
[de Firmian,Nick]

1.e4 e5 2.Nf3 d6 3.h3 Be7 4.Bc4 Be6 5.d3 Nc6 6.Bb5 a6 7.Ba4 b5 8.Bb3 h6 9.Bd5 Qd7 10.Bxe6 Qxe6 11.0-0 Nf6 12.Nc3 0-0 13.Be3 Rad8 14.d4 d5 15.Qd3 dxe4 16.Nxe4 Nd5 17.Qe2 Nxe3 18.Qxe3 Nxd4 19.Rac1 f5 20.Nc3 Nxf3+ 21.Qxf3 b4 22.Ne2 f4 23.Qb7 Rd2 24.Rfe1 Qc4 25.b3 Qb5 26.Qxc7 Bd6 27.Qc4+ Qxc4 28.bxc4 Bc5 29.Kf1 f3 30.Rcd1 fxg2+ 31.Kxg2 Rxf2+ 32.Kg3 Rdxe2 33.Rd8+ Kh7 34.Red1 Re3+ 35.Kg4 Rg2+ 36.Kf5 Rf2+ 37.Ke6 Bd4 38.Rb1 Bc3 39.Ra8 Rf6+ 40.Kd5 and Black won. 0-1

(37) Cole,Tony (1400) - Bryan,Robert (421) [B50]
MI Summer TNM: U1600 San Francisco (1.37), 28.05.2019
[de Firmian,Nick]

1.e4 c5 2.Nc3 d6 3.Nf3 Nf6 4.Bc4 Bg4 5.h3 Bh5 6.g4 Bg6 7.d3 e6 8.Bg5 Be7 9.Qd2 0-0 10.0-0 h6 11.Bh4 Nc6 12.g5 Nd7 Score stops making sense; White won in a lot of moves. 1-0

(38) Mayer,Carson - Baer,Michael (1397) [B06]
MI Summer TNM: U1600 San Francisco (1.38), 28.05.2019
[de Firmian,Nick]

1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c3 Nc6 5.d5 Ne5 6.Nbd2 Bg4 7.Be2 Nxf3+ 8.Nxf3 e5 9.0-0 Nf6 10.Bg5 h6 11.Be3 Nxe4?? 12.Qa4+ Qd7 13.Qxe4 f5 14.Qb4 b6?? 15.h3? [15.Bb5] 15...Bxf3 16.Bxf3 0-0 17.Rad1 Rae8 18.Be2 Qe7 19.Bb5 Rd8 20.Ba4 f4 21.Bd2 g5 22.Bc2 h5 23.Qe4 h4 24.Qh7+ Kf7 25.Qg6+ Kg8 26.Qh5 Bf6 27.Qg6+ Bg7 28.Qh5 Bf6 29.Qg6+?? (Of course that extra bishop ruling the light squares should be a win.) 29...Bg7 (Three-fold repetition of *position* -- not moves, which can be different.) 1/2-1/2

(39) Chambers,Don +m$40 (1291) - Wilson,Jijo [B50]
MI Summer TNM: U1600 San Francisco (1.39), 28.05.2019
[de Firmian,Nick]

1.e4 c5 2.Bc4 d6 3.Nf3 Nf6 4.Nc3 h6 5.0-0 Bg4 6.h3 Bh5 7.g4 Bg6 8.e5 Ng8 9.Bd5 Nc6 10.e6 fxe6 11.Bxe6 Qc7 12.Nd5 Qb8 13.d4 Nf6 14.Nxf6+ gxf6 15.dxc5 Nd8 16.Re1 Nxe6 17.Rxe6 Bf7 18.Re1 dxc5 19.c4 a6 20.Qd2 Bxc4 21.b3 Bb5 22.Bb2 Bg7 23.Qe3 Qc7 24.Nh4 Kf7 25.Nf5 Rae8 26.Rad1 Bd7 27.Nxe7 Qd8 28.Qxc5 Rxe7 29.Qd5+ Ke8 30.Rxe7+ Qxe7 31.Qxb7 Bb5 32.Qb6 Kf7 33.a4 Qe2 34.Qc7+ Kg6 35.Qc1 Bc6 36.Qxc6 Qxd1+ 37.Kg2 Qe2 38.Bd4 Re8 39.Kg3 Qd3+ 40.Be3 Qe4 We've run out of good guesses. White somehow won. 1-0

(40) Anderson,David - Reyes,Victor Hugo (1282) [C64]
MI Summer TNM: U1600 San Francisco (1.40), 28.05.2019

1.e4 e5 2.Nf3 Nc6 3.Nc3 Bc5 4.Bb5 Nge7 5.0-0 Nd4 6.Nxd4 Bxd4 7.Ne2 Bb6 8.c3 a6 9.Bc4 0-0 10.d4 d5 11.exd5 Bg4 12.f3 Bh5 13.Kh1 Nxd5 14.dxe5 c6 15.Nf4 Nxf4 16.Qxd8 Bxd8 17.Bxf4 b5 18.Bb3 c5 19.e6 c4 20.exf7+ Rxf7 21.Bc2 Rxf4 22.Rad1 Rf8 23.Rd5 Bf7 24.Be4 Rb8 25.Rd7 Bf6 26.f4 Rfd8 27.Rfd1 Rxd7 28.Rxd7 Rd8 29.Rxd8+ Bxd8 30.Bb7 a5 31.Bc6 b4 32.Ba4 bxc3 33.bxc3 Bf6 34.Bb5 Bxc3 35.g4 Bd4 36.h4 c3 37.Bd3 Bxa2 38.Bc2 Bd5+ 39.Kh2 g6 40.f5 Kg7 41.fxg6 hxg6 42.Kh3 Kf6 43.g5+ Kg7 0-1

(41) Soffer,Aaron (1246) - Barreyro,Romeo [B00]
MI Summer TNM: U1600 San Francisco (1.41), 28.05.2019

1.e4 b6 2.Nc3 Bb7 3.Bc4 e6 4.Nf3 Be7 5.d4 c6 6.Bb3 Ba6 7.Bf4 Nf6 8.Qd2 0-0 9.h4 d5 10.e5 Ng4 11.h5 c5 12.dxc5 Bxc5 13.Rh3 Bxf2+ 14.Kd1 d4 15.Ne4 Be3 16.Bxe3 Nxe3+ 17.Kc1 Nc6 18.h6 g6 19.Nf6+ Kh8 20.Ng5 Nxe5 21.Qf2 N3g4 22.Qh4 Qxf6 23.Ne4 Qf4+ 24.Kd1 Qf1+ 25.Kd2 Qe2+ 26.Kc1 Qxe4 27.Rg3 Qe1# 0-1

(42) Smith,Robert (1800) - Capdeville,Barry (1239) [A00]
MI Summer TNM: U1600 San Francisco (1.42), 28.05.2019
[de Firmian,Nick]

0-1 Forfeit 0-1

(43) Yu,Prescott (1212) - Radaelli,Lucas [B25]
MI Summer TNM: U1600 San Francisco (1.43), 28.05.2019

1.e4 c5 2.Nc3 Nc6 3.g3 d6 4.Bg2 g6 5.d3 Bg7 6.f4 e6 7.Nf3 Nge7 8.0-0 0-0 9.Be3 b6 10.h4 Bb7 11.h5 f5 12.hxg6 hxg6 13.Ng5 Nd4 14.Kf2 fxe4 15.Bxe4 Bxe4 16.dxe4 Nec6 17.Kg2 Bf6 18.Nxe6 Nxe6 19.Qd5 Qd7 20.f5 Nb4 21.Qb3 Nxc2 22.fxe6 Nxa1 23.Rxa1 Qe7 24.Rf1 Rae8 25.Bh6 Bg7 26.Nd5 Qxe6 27.Rxf8+ Kxf8 28.Bxg7+ Kxg7 29.Qc3+ Qe5 30.Qf3 Qxe4 0-1

(44) Geiersbach,Christopher - Otterbach,Renate (1212) [A45]
MI Summer TNM: U1600 San Francisco (1.44), 28.05.2019
[de Firmian,Nick]

1.d4 Nf6 2.Bf4 e6 3.e3 Nc6 4.c3 b6 5.Nd2 Bb7 6.Bd3 Ne7 7.Ngf3 Ned5 8.Bg3 c5 9.Nc4 d6 10.Qa4+ Qd7

11.Nxd6+ Bxd6 12.Bb5 1-0