Shakmaty Bereolos - The Official Chess Site of Peter Bereolos

White: FM Peter Bereolos
Black: GM Michael Brown
2019 US Masters
Round 1, Board 16

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 d5 5.Bg2 0-0 6.Nf3 dxc4 7.0-0 Nc6

This was the 7th time I reached this position over the board. I've tried a variety of ideas here, but so far have been unsuccessful, with a +0 =6 -1 score. 8.Bg5 Rb8 I had faced the more popular 8...h6 a couple of times in the past year. I think the text is the most ambitious plan for Black. 9.Rc1 b5 10.Ne4 Be7 11.Nxf6+ Bxf6 12.Bxf6 Qxf6 13.b3 Ba6 14.e3 Probably too slow, but I was hesitant to sacrifice the d-pawn. However, it looks like White has compensation after 14.Nd2 Nxd4 15.Ne4 Qd8 16.Nc5 14...e5 15.Nd2 exd4 16.Ne4 Qe7 This shows the difference. Black doesn't have to retreat the queen to d8 so the White knight never arrives on c5. 17.exd4 Rfd8 18.d5 Nb4 19.bxc4 bxc4 20.Nc3 c6 21.Qa4 cxd5 He spent a long time before making this capture trying to assess the upcoming complications. 22.Nxd5 22.a3 Nd3 23.Qxa6 Nxc1 24.Rxc1 leads to an unbalanced position. The two connected passed pawns are likely worth more than the two pieces for a rook as the White knight will struggle to find an outpost. 22...Qd6 23.Ne3 Nd3 24.Rc2 Rb4 25.Qa5 g6 26.Rd1 Rdb8 27.h4 Rb2 28.Rdd2 28.Rxd3 cxd3 (28...Qxd3 29.Rxb2 Rxb2 30.Qxa6) 29.Rc6 Qb4 30.Qxa6 should also be about equal 28...Rb1+ 29.Kh2 R1b4 30.Qd5 Qxd5 31.Nxd5 31.Bxd5 pressuring the c-pawn is a legitimate alternative 31...Ra4 32.Re2 Bb7?!

A time trouble mistake, blundering the exchange, although he gets plenty of compensation It was better to avoid this with 32...Kg7 33.Nf6+ Kg7 34.Nd7 Bxg2 35.Nxb8 Bd5 36.Nd7 Rb4 37.Ne5 Rb1 38.f3 h5?! Too ambitious. Black has no problems after 38...Nxe5 39.Rxe5 Bxf3 40.g4 Bxg4 41.Rxc4 Rb2+ 42.Kg3 Be6 39.Rc3 Ra1 40.a3 Kh6 41.Kg2 Nc5 42.Nxc4 Na4 43.Rcc2 Nb6 44.Ne3 Rxa3 This surprised me. I thought he would maintain the bishop with 44...Be6 45.Rc3 Na4 46.Rd3 Nc5 47.Nc2 45.Nxd5 Nxd5 46.Ra2 Rb3 47.Rxa7

This ending should be a technical win for White, but he defended very tenaciously. I slowly made progress, but playing on the increment eventually caused me to lose patience. 47...Kg7 48.Kf2 Rb8 49.Rd2 Rb5 50.Rd7 Nf6 51.R7d4 Ng8 52.g4 hxg4 53.fxg4 Nh6 54.Kg3 Rb1 55.Rd1 Rb3+ 56.R1d3 Rb1 57.Ra4 Rg1+ 58.Kf3 Rh1 5 9.Rdd4 Kh7 59...Rxh4 60.g5 Rh3+ 61.Kg2+- 60.Kg3 Kg7 61.Kg2 Rb1 62.Rd8 Rb2+ 63.Kf3 Rb3+ 64.Kf2 Rb2+ 65.Kf3 Rb3+ 66.Ke2 Rb2+ 67.Kd3 Rb3+ 68.Kd2 Rb7 69.Re8 Ng8 70.g5 Ne7 71.Raa8 f6 72.Reb8 Rd7+ 73.Ke2 fxg5 74.hxg5 Kf7 75.Rb5 Nc6 76.Rc5 Nd4+ 77.Ke3 Nf5+ 78.Kf4 Nd4 79.Ke4 Ne6 80.Rca5 Ke7 81.R8a6 Kf7

82.Ra7? Invading the 7th is the right plan, but this is the wrong execution, dropping the g-pawn. 82.Ke3 Re7 (82...Rd1 83.Ra7+ Kg8 84.R5a6 (84.Ra8+ Nf8 85.Ra1 Rd7 86.Rf1) ) 83.Ra7 Nc7+ 84.Kf3 82...Nxg5+! 83.Ke5 Ke7 84.Rxd7+ Kxd7 85.Ra7+ Kc6 86.Rg7 Nf3+ 87.Ke4 Ng5+ 88.Kd3 Ne6 The knight is rejoined with the king so the draw is obvious. He offered one somewhere around here, but that is out of place as it is White's perogative as to how long to play it out. 89.Rxg6 Kd5 90.Rh6 Nf4+ 91.Ke3 Ke5 92.Rh8 Nd5+ 93.Kf3 Nf6 94.Ra8 Nd5 95.Ra5 Kd4 96.Rxd5+ Kxd5 1/2-1/2