Shakmaty Bereolos - The Official Chess Site of Peter Bereolos

White: GM Alonso Zapata
Black: FM Peter Bereolos
2019 Georgia Senior Chess Championship
Round 3, Board 1

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Nxe4 An over the board decision. I knew he generally played the Central Attack (5.d4), but it looks like in the database about half the time he reaches it from the move order 5. 0-0 Be7 6. d4. 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Qe2 0-0 11.Be3 Qe7 In his recent GM repertoire book, Mikhalevski recommends 11...f6 12.Nbd2 12. Rb1 was Kamsky's choice in this position against Anand in their 1995 PCA Candidates match. 12...Nxd2 12...Bxe3 13.Qxe3 Nxd2 14.Qxd2 Na5 15.Bc2 Nc4 16.Qd3 also reaches the game position 13.Qxd2 Bxe3 14.Qxe3 Na5 15.Bc2 Nc4 16.Qd3 g6 17.b3 Bf5 17...Na3 which I played in a similar position against Fishbein is the most popular move here, but the results are heavily in White's favor +4 = 1 -0 18.Qe2 Bxc2 19.bxc4 Be4 20.Nd2 20.cxb5 Bxf3 21.Qxf3 Qxe5 led to nothing in the game Bujnoch-Olsarova, Ostrava 2007 20...Rfe8 21.Rfe1

21...Qa3 Czech GM Hracek was successful with the sacrificial approach here 21...bxc4!? 22.Nxe4 Qxe5 23.Ng3 Qxc3 24.Qxe8+ Rxe8 25.Rxe8+ Kg7 and the connected passers gave compensation in Firt-Hracek, Karvina 1989 22.f3 [22.Nxe4 dxe4 23.Qxe4 Qxc3] 22...Bf5 23.cxd5 Qc5+ 24.Qe3 Qxd5 I missed that after 24...Qxe3+ 25.Rxe3 Rad8 regains the pawn. Black should have no problems with the queens off. 26.c4 bxc4 27.Nxc4 Rxd5 25.Nb3 f6 26.f4 fxe5 27.Rad1 Qc6 28.fxe5 Be6 29.Nd4 I had expected 29.Nc5 looking towards Ne4-f6 29...Qb6 30.Rd2 Rad8 31.h4 c5 32.Nf3 Rxd2 33.Qxd2 Qd8 It is better to get the queenside pawns rolling with 33...b4 34.Qf2 Qd5 35.h5

35...Bg4 I spent oodles of time on this move. I correctly judged the ensuing rook ending as equal, but the engines prefer both 35...Qxa2 and 35...gxh5 I considered both of these moves, but got worried about the loose position of my king. 36.hxg6 Bxf3 36...hxg6 37.Ng5 with the idea of Qh4 with an attack 37.gxh7+ Kh8! 38.Qxf3 Qxf3

Zapata-Bereolos

39.gxf3 Kxh7 40.f4 Kg6 41.Kf2 Kf5 42.Kf3 Rd8 43.e6 Rd3+! 44.Ke2 Rd8! 45.e7 Re8! 46.Kf3 Kf6 47.Re5

47...Rxe7?! simpler was 47...c4 48.a4 (The pawn endings are drawn, for example 48.Ke4 Rxe7 49.a3 Rd7 50.Rd5 Rxd5 51.Kxd5 Kf5 52.Kc5 Kxf4 53.Kb6 (53.a4 bxa4 54.Kxc4! Ke5 55.Kb4 Kd5 56.Kxa4 Kc4 57.Ka5 Kxc3 58.Kxa6) 53...Ke4 54.Kxa6 Kd3 55.Kxb5! Kxc3! 56.a4! Kb3=) 48...bxa4 49.Ra5 Kxe7 50.Rxa6 (50.Rxa4 Ra8 51.Rxc4 a5 52.Ra4 Rc8 53.c4 Rc5 54.Ke4 Ke6 55.Kd4 Rf5) 50...Rh8 51.Ke4 Rh3 52.Kd4 Rf3= 48.Rxc5 Rd7 49.Ke4 Re7+ 50.Kd4 Rd7+ 51.Rd5 Rc7 52.Rd6+ Kf5 53.Rxa6 Rc4+! 54.Kd3 Rxf4! 54...Kxf4? 55.Ra5! Rc8 (55...Rc5 56.a4 allows White connected passers) 56.Rxb5 and the Black king is too far away to defend 55.Ra5 Ke6 56.Rxb5 Ra4 57.Rb2 Kd5 58.Kd2 Kc5 59.Kc1 Ra3 60.Rc2 Ra8 61.Rh2 Kc4 62.Kb2 Rb8+ 63.Kc2 Ra8 64.Rh4+ Kc5 65.a4 Rg8 66.Kb3 Rb8+?! Black needs to be careful after this check. It is better to move the king to his optimal defensive position on the b-file with 66...Kb6 67.Rb4 Rh8? 67...Ra8!= stopping the pawn from advancing was the only drawing move.

68.Rb5+? Black can't cope with the a-pawn after 68.a5! Rh6 69.Ka4 Rg6 70.Rb5+ Kc4 71.Rb6 Rg1 72.Rc6+! Kd5 73.Rc8 Kd6 74.a6 Ra1+ 75.Kb5! Rb1+ 76.Ka5 Ra1+ 77.Kb6 Rb1+ 78.Ka7 Rb3 79.Ka8 Kd7 80.Rc4 Kd6 81.a7 Kd5 82.Rb4 68...Kc6 69.Kb4 Rg8 70.a5 I stopped recording here. We eventually reached the following position

I played ...Kb5?! (Kxa5 is a textbook draw) and after Kb7 I lost on time before trying to execute ...Kxa5? (Here, Kxc5 is still a draw). 1-0

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