Monday, 27 May 2019

Last Two Matches

As the season draws to a close, Aberystwyth has played its last two Dyfed League matches, with good results. On Monday 13 May, the club had a home match against Carmarthen. Top board Rudy van Kemenade played an unusual formation against Gerry Heap's English Opening, hoping to lure his opponent into a premature attack. The White king became exposed and the game ended with a sudden tactical coup, a good win for Rudy against a very strong opponent. Adam Watkin-Jones's game against David Buttell was also an English, this time by transposition, and once again the Carmarthen player overpressed, creating too many weaknesses and allowing White to invade his position. It was an evening for the hypermodernists, as Julie van Kemenade faced Paul Orton's 1.Nf3 and a slow, careful White development, which didn't allow her an entry point for some time. When things opened up, however, the game finished quickly with a tactical error by White. My own use of an English-like system against the Sicilian is beginning to feel counter-productive. Against Robert Narayan-Taylor, I expanded my position slowly and found weaknesses appearing all over the board. A Black error left me a piece up in a game I should already have lost, but by now I was very short of time, and agreed a draw, The match finished 3½-½ to Aber.

Adam Jones was left without a Board 2 opponent in the match against Cardigan B on Monday 20 May, as Howard Leah was missing. On top board Rudy had a tough battle in the Petroff, playing the White side for once, against Ben Brewer. Black's miscalculated combination left White a pawn up but the knight versus bishop ending required careful play before Rudy was able to secure the point. The bottom board game between James Cook and Awne Osinga was a quiet draw in the Caro-Kann. My Board 3 game against Joshua Brewer was another draw, but anything but quiet. I played the fork trick in the Three Knights Game, and got a strong attack, but a series of weaker options allowed him to counterattack on the kingside. In desperation, I sacked the exchange and looked for a while as if I was forcing mate, but it wouldn't have worked out, even with best play. An exciting game in which both sides made mistakes eventually settled into a drawn ending. The match finished 3-1 to Aber with the default on Board 2. With one match still to play in the League, Cardigan A have already regained the championship, which Aberystwyth held last year. We finish second, and Aberystwyth University are an excellent third, after a fine first season which included a win in their first ever derby match against the town team.

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1.c4 1.Nf3 d6 2.d4 c6 3.e4 Nd7 4.Nc3 h6 5.a4 Qa5 6.Bd2 g5 IC Jones-Van Kemenade, Dyfed League 2019,0-1 1...d6 1...e5 2.g3 h5 3.Nf3 e4 4.Nd4 Nc6 5.Nxc6 dxc6 6.Bg2 Nf6 7.Nc3 Qd4 8.d3 exd3 9.Qxd3 Qxd3 10.exd3 Bf5 Heap-Van Kemenade,Dyfed Closed 2018,0-1 2.g3 c6 3.Bg2 Nd7 4.Nc3 h6 the Elshad System, trying to provoke Wh into a premature attack 4...e5 main 4...g5 5.h4 g4 6.d4 Bg7 7.e3 h5 8.Nge2 Ngf6 9.b3 0-0 10.Bb2 e5 11.Qc2 Re8 12.0-0-0 Brodsky (2333)- Larionov ( 2049), Moscow 2014,1-0. Komodo12- definite plus for Wh, equal Stockfish10 5.b4 5.Rb1 anticipated by Rudy in pre-game planning as these first 5 moves have been played by Gerry before against varying Bl setups 5...a5 to blockup the Q side entirely & avoid Wh's normal style of play 5...g5 6.b5 c5 alternative 6...cxb5 7.cxb5 Bg7 Stockfish10 6.b5 c5 7.e3 hoping to regain bl square control Ne5 8.d3 Bf5 9.e4 initial choice of the Engines 9.Bxb7 Nxd3+ 10.Kf1 Ne5 11.e4 Be6 12.Bxa8 Bxc4+ 13.Kg2 Qxa8 14.Qa4 Be6 15.Rb1± Stockfish10 & Komodo`12; but Bl has some K side chances 9...Bg4 10.Qc2 10.f3 Engines; avoided by Wh so as not to obstruct the B, happens later anyway 10...g5 11.h3 Bd7 12.Nge2 12.f4 gxf4 13.gxf4 Ng6 is very loosening around the Wh K side 12.Bb2 12...g4 13.hxg4 Bxg4 14.Ng1 Bg7 15.f3 Bd7 16.Nge2 Nf6 16...a4 Stockfish10, considered 17.Nf4 e6 17...a4 considered 18.Nxa4 18.a3 Stockfish10 18...Qa5+ 19.Nc3 Nxe4 20.fxe4 Nf3+ 21.Kf1 Qxc3 22.Qxc3 Bxc3 23.Rb1 Nd2+ 24.Bxd2 Bxd2 17...h5 also 18.Be3 18.Bb2 Stockfish10 h5 19.0-0-0 h4 20.Kb1 hxg3 21.Rxh8+ Bxh8 22.Rh1 Ke7 22...Bg7 are both still complicated, though Stockfish10 gives wins for Wh 18...Qe7 looking at d5 as a possibilty 18...h5 19.0-0-0 Qc7 20.Na4 Ke7 20...b6 21.Kb1 b6 still very complex, Plus for Wh Komodo12, win for Wh Stockfish10 19.Na4 19.0-0-0 Stockfish10, expected by Bl 19...Ng6 19...Nfg4 20.Bg1 doesn't get very far 19...h5!? 20.Nb6 Rb8 20...Nxf4 Stockfish10 21.gxf4 21.Nxa8 Nxg2+ 22.Qxg2 Qd8 23.0-0-0 Qxa8= 21...Rd8 22.0-0-0 Bc8 23.d4 Nd7 24.dxc5 Nxb6 25.cxb6+- 21.Rd1 21.0-0-0 Rudy & Stockfish10- Instead Wh tries for an immediate breakthrough to punish Bl's unorthodox opening. In what happens though, Bl's K is safer than Wh's 21...Qd8 22.Nxd7 22.Nxg6 fxg6 23.d4 cxd4 23...Qxb6 24.e5 0-0 25.exf6 Rxf6 26.dxc5 Qd8 27.Rxd6 e5 28.Bxh6 Rxd6 29.cxd6 Qf6 30.Qd2+- 24.Bxd4 e5 24...0-0 25.Nxd7 Qxd7 26.e5 dxe5 27.Bxe5 Qf7 28.Bxb8 Rxb8 29.0-0+- 25.Bf2 Be6 26.0-0 Qc7 27.Rd3 0-0 28.Rfd1 Ne8 29.a4 Stockfish10 22...Qxd7 22...Nxd7 keeps control over e5, but 23.Nh5 is a nuisance Bd4 23...Bf8 24.d4+- 24.Bxd4 cxd4 25.f4± 23.Nxg6 23.d4 expected, may be better Nxf4 24.gxf4 Qe7 25.dxc5 dxc5 26.e5 Nh7 27.Rd6 b6 28.Rc6 Nf8 29.Ke2 h5 30.Bh3 f5 31.exf6 Qxf6 is the kind of position Engines relish, though it faces humans with very difficult choices, especially with clocks ticking away 32.Rb1 Qh4 33.Rc7 Qxh3 34.Qe4 Qg2+ 35.Bf2 Rd8 36.Qc6+ Rd7 37.Rg1+- Stockfish10 23...fxg6 24.e5 24.d4 cxd4 25.Bxd4 Qf7 26.f4 0-0 27.0-0 Nh5 another complex position considered in pm analysis 28.Bf2 g5 29.e5 gxf4 30.exd6 Kh8 31.c5 Qg8 32.Qd2 Nxg3 33.Bxg3 fxg3 34.d7+- Komodo12 24...dxe5 25.Bxc5 b6 26.Be3 26.Bf2 Rudy looks safer, both Engines Qc7 27.0-0 Kf7 28.a4 h5 28...Bf8 26.f4 Gerry & pm analysis Kf7 27.Bc6 Qc7 28.Ba3 exf4 29.0-0 Nh5 29...g5 30.d4 Rhd8 31.gxf4 gxf4 32.Bc1 e5 33.dxe5 Qxe5 34.Bxf4 Qc5+ 35.Kg2 Rbc8 36.Bg3 Kg8 37.Rxf6 Bxf6 38.Qg6+ Bg7 39.Bd7 Rf8 40.Be6+ Kh8 41.Rd7 Qg5 42.Rxg7 Qxg6 43.Rxg6 Kh7 44.Rg4 Rce8 45.Bd5+- Engines make life look simple 30.d4 Rhd8 31.d5 Qe5 32.Rfe1 Qg5 33.dxe6+ Kg8 34.e7 Rxd1 35.Rxd1 Nxg3 36.Qg2+- Stockfish10 26...Nh5 26...Qf7 safer 27.d4 Qf7 28.Qf2 looks ok, defending and threatening, but now it seems the tide turns 28.Bf2 exd4 29.f4 0-0 29...Rg8 30.Bh3 Ke7 31.0-0+- 30.Be4 Nf6 31.Bxg6 Qb7 32.0-0 Ng4 33.Bxd4 e5 34.Be4 Qc7 35.Qe2 h5 36.Bd5+ Kh8 37.fxe5 Rxf1+ 38.Rxf1 Bxe5 39.Be3 Bg7 39...Bxg3 40.Rf5+- 40.Rf4 Rf8 41.Rxg4 hxg4 42.Qh2+ Bh6 43.Qxh6+ Qh7 44.Qxf8+ Qg8 45.Qxg8# Stockfish10 28.Rxh5 gxh5 29.dxe5 0-0 30.f4 Kh8 31.Ke2 Rg8 32.Bc6 Bf8 33.Rd7 Be7 34.f5 Qh7 35.Be4 Rxg3 36.Bf2 Rg4 37.Qd3+- Stockfish10 28...exd4= 29.Bxd4 e5 29...0-0 30.0-0= 30.Bxb6 30.Be3 0-0= 30...Qxc4 31.Bf1 Qc3+ 32.Bd2 Qc2 33.Qe3 Stockfish10 30...Qxc4 the Wh K is now vulnerable in the middle 31.Bxa5 31.Rh4! Stockfish10, solves the Wh piece mobilization Qc3+ 31...Qxb5 32.Bc7 0-0 33.Bf1 Qb2 34.Bxb8 Qxb8 35.Re4 35.Rc4 e4 36.f4 g5= 35...g5 31...Nf4 32.gxf4 Qb4+ 33.Rd2 Qb1+ 34.Rd1 Qb4+= Stockfish10 32.Kf1 0-0 33.Kg1 Nxg3 34.Rg4 Ne2+ 35.Qxe2 Rxb6 36.Rc4= Stockfish10 31.Qc5 Qxc5 32.Bxc5 Rxb5 33.Bf2 0-0 34.0-0 Stockfish10 31...Qxb5 Wh was now getting very low on time 31...Rxb5? 32.Rd8+ Kf7 33.Qa7+ Kf6 34.Rd6+ Kg5 35.Bd2+ mating 32.Bc3 32.Bd2 0-0 32.Bc7 Stockfish10 Qb4+ 32...Rc8 33.Bd6 Qa5+ 34.Qd2 34.Kf1 Qa4 34...Rd8 35.Rxh5 35.Kg1 Bf8-+ 35...gxh5 36.Qe2 Bf8 37.Bxf8 Rxf8 38.Rxd8+ Kxd8 39.Qd3+ Ke7 40.Qh7+ Rf7 41.Qxh6 Qxa2 35.Ke1 Rc2 36.Qb6 Nxg3 33.Qd2 Qxd2+ 34.Rxd2 Rb7 35.Bd6 Nxg3 32...0-0-+ 33.a3 33.Rxh5 gxh5 34.Qe3 h4 35.gxh4 Rf7-+ is the best Stockfish10 finds for Wh 33...Rfd8 33...e4! Stockfish10- considered 34.Bxg7 exf3 35.Rxh5 35.Bxf3 Rbe8+ 36.Kd2 Nxg7-+ 35.Bxf8 Re8+ missed by Bl in looking at this variation 36.Kd2 Qb2+ 37.Kd3 Qxf2-+ 35...Rbe8+! 36.Be5 36.Re5 Kxg7 36...Qa5+ 37.Qd2 fxg2 38.Qxa5 g1Q+ 39.Kd2 Rd8+ 40.Bd6 Rxd6+ 41.Rd5 Qf2+ 42.Kc1 Rc6+ 43.Kb1 Rb8+ mating 34.Qa2+ Kh7 34...Kh8 35.Rxd8 Rxd8 36.Qc2 36.Rxh5 Qc5! 36...gxh5 37.Bb4 e4 more human 37.Bb4 Qg1+ 38.Bf1 Qxg3+ 39.Qf2 Qxf2+ 40.Kxf2 gxh5-+ Stockfish10 36...Nxg3 37.Rh3 Nf5 38.Bf1 38.Bd2 Nd4 39.Qd1 39.Qe4 Qb2 40.Rh2 Nc2+ 41.Kd1 Nxa3-+ 39...Nb3-+ Stockfish10 38...Qxf1+ cashing in, though , as Bl suspected, Stockfish10 thinks Bl has even better 38...Qc5! 39.Qc1 Qg1 40.Bd2 Rd3 40...Ng3 41.Qc4 Rxd2 42.Kxd2 Nxf1+ 41.a4 e4 42.fxe4 Ng3-+ 42...Rxh3 43.exf5 Qg3+ 43.Rxg3 Qxg3+ 44.Kd1 Qf3+ 45.Kc2 45.Ke1 Be5 45...Qxe4 46.Kd1 Qf3+ 47.Kc2 Rd7-+ Stockfish10 0–1
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WhiteEloWBlackEloBRes
Heap,G2195Van Kemenade,R20210–1
Watkin-Jones,A1928Buttell,D18881–0
Orton,P1532Van Kemenade,J17610–1
Francis,M1712Narayan-Taylor,R1368½–½
Van Kemenade,R2021Brewer,B15551–0
Francis,M1712Brewer,J1400½–½
Osinga,A1350Cook,J1496½–½
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