Friday, 10 March 2017

The Cardigan Season

There is a time in almost every chess season when one or other of the Aber teams seem to be playing Cardigan almost constantly (though, to be fair, this was truer in the days when Cardigan also fielded two teams). That time has now arrived, and on Tuesday 28 February, it was the B team's turn to host the League Champions, the first time we have played them at our new venue of the Brynamlwg Tavern. On top board, Adam Robinson could never quite match Howard Williams's piece activity in a constantly changing ending, and by the time it got down to opposite-coloured bishops the two-pawn deficit was enough to ensure his defeat. Julie van Kemenade, in her first match for some time, played an ingenious exchange sac against Iolo Jones, whose defence was ingenious enough to cope with it. Julie might have had a draw, but lost while trying for more. My game against Tony Haigh was a French Exchange that never looked like being other than a draw, a complete contrast to the game on Board 4, where James Corrigan played the wild Danish Gambit against Awne Osinga, and eventually got the attack he was seeking, winning a piece with more material to follow. The result was 2½-1½ to Cardigan.

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1.Nf3 g6 2.e4 d6 3.d4 Bg7 4.Nc3 Nf6 5.Be2 0-0 6.0-0 Nbd7 6...c6 main 7.e5 7.h3 main 7...dxe5 allows a dangerous pawn thrust 7...Ne8 main 8.dxe5 Ng4 9.e6 Wh scores 82% with this ( a similar line can occur in a King's Indian) Nde5 9...fxe6 10.Ng5+- 10.h3 uncommon 10.exf7+ Nxf7 11.Bc4 11.Qxd8 Rxd8 12.Bc4 also scores highly 11...Qxd1 12.Rxd1 scores 95% for Wh 10...Nxf3+ 10...Qxd1 11.Rxd1 Nxf3+ 12.Bxf3 Ne5 12...Bxc3 13.bxc3 Nf6 14.exf7+ Kxf7 15.Rb1 Anbuhl-Windt, Hamburg U18 1978,1-0 12...Nf6 13.Nb5 Ne8 14.Rd8 a6 15.Rxe8 axb5 16.Rxe7 c6 17.exf7+ Rxf7 18.Re8+ Rf8 19.Rxf8+ Kxf8 20.c3 Blatny-Porter, World op Philadelphia 1995,1-0 13.exf7+ Nxf7 14.Nd5 Ne5 15.Be2 Vidal Melendez-Nigro Monasterios, Falcon Garcia mem 2014,1-0 11.Bxf3 Ne5 12.exf7+ Nxf7 12...Kh8 13.Qxd8 13.Bd5 13...Nxf3+ 14.gxf3 Rxd8 15.Re1 Khazhipov-Protasov, Cheliabinsk ch 2010, 0-1 13.Qxd8 Rxd8 14.Re1 14.Nd5 Rd7 15.Nf4 Rd6 16.Nd3 Rb8 17.Re1 e5 18.Nc5 Komodo10 14...Bxc3 14...c6= Komodo10 15.Rxe7 15.g4 Ne5 16.Be2 Be6= 15...Be5 16.Be3 Bf6 17.Re4 Bf5 18.Rb4 Nd6 19.Rd1 Bxc2 20.Rd2 Bf5 21.Bf4 a5 22.Rb6 Nc4 23.Rxd8+ Rxd8 24.Rxb7 Nxb2 25.Rxb2 Bxc3 15.bxc3 e5 16.Be3 c6 17.Rab1 Nd6 18.Bc5 Nb5 18...e4 19.Bxe4 Nxe4 20.Rxe4 b6 21.Be7 Bf5 22.Re2 Re8 23.Rbe1 Kf7 24.g4 Bxc2 25.Bg5 Rxe2 26.Rxe2 h6 27.Re7+ Kf8 28.Bf6 a5 29.Kh2 Komodo10, lots of humans would be quite happy with Wh's position( though Bl can also get some R activity) 19.Rxe5± Nxc3 20.Rbe1 Bf5 20...Nd5!? Rudy 21.c4!+- Komodo10 Nb6 22.Re8+ Rxe8 23.Rxe8+ Kf7 24.Re7+ Kf6 24...Kg8 25.Bd4+- 25.Rxh7+- 21.g4 21.Re7 b6 22.Ba3 Nd5 23.Rb7 Re8 24.Rxe8+ Rxe8 25.c4 Nc3 26.Bxc6 Rc8 27.Bf3 Rxc4 28.Bb2 Be4 29.Bxe4 Nxe4 30.Rg7+ Kf8 31.Rxa7± Komodo10 21...Bd7 21...Bxc2! looks fatal, but Komodo8.1 & 10 suggest its only slight advantage to Wh 22.Re7 22.Rc1 Rd3! 23.Bg2 23.Kg2 Bd1! 24.Re3 Bxf3+ 25.Kxf3 Rxe3+ 26.fxe3 Nd5 23...Rd1+ 24.Rxd1 Bxd1 25.Re7 b6 26.Be3 Nd5 27.Bxd5+ cxd5 28.g5 Bc2= 22...b6 23.Rc1 Rd3 24.Rxc2 Rxf3 25.Bd4 Nb5 25...Nd5 26.Rg7+ Kf8 27.Rxh7 Rd8 28.Rxc6 Ne7 29.Rf6+ Rxf6 30.Bxf6 Rd1+ 31.Kg2 Nd5 32.Be5 a5 33.Kf3± 26.Be5 Rf7 27.Rxf7 Kxf7 28.Rxc6 Re8 29.f4 g5= Komodo10 22.Re7+- Re8 22...b6 23.Bd6 Re8 24.R1e3 Rxe7 25.Rxe7 Be8 26.Be5 Nxa2 27.Rg7+ Kf8 28.Rxh7+- 23.R1e3 23.Bd4!+- both Komodos Na4 23...Nxa2 24.Rg7+ Kf8 25.Ra1 Rad8 26.Rxh7 Be6 27.Bxa7+- 24.R1e4 Rxe7 25.Rxe7 Be8 26.Rxb7+- Komodo10 23...Rxe7 24.Rxe7 Rd8 25.Bxa7 25.Kg2+- both Komodos 25...Bc8 25...Rf8 26.Rxd7 Rxf3 27.Rxb7 Nxa2 28.Be3 Nc3 29.Kg2 Rf7 30.Rb3 30.Rxf7± but human technique should wins this comfortably 30...Nd5 31.Bh6 Rc7 32.c4± 26.Kg2 Nxa2 27.Be2 27.Bb6 Rf8 28.Bc5+- both Engines 27...b5 28.Bf3 28.Bb6 Rf8 28...Rd7 29.Re8+ Kf7 30.Rxc8 29.Bf3 Rf7 30.Re8+ Rf8 31.Rxf8+ Kxf8 32.Bxc6+- Komodo10 28...Nb4 28...Rd7 29.Re8+ 29.Rxd7 Bxd7 29...Kf7 30.Rxc8 Rxa7 31.Bxc6 b4 32.Bd5+ Ke7 33.Bb3 Nc1 34.Rb8 Nxb3 35.cxb3 Ke6 36.Rxb4 again, Komodo10 only rates as definite plus for Wh. looks quite an easy win. 29.c3 Nd5 30.Bxd5+ cxd5 31.Bd4 Kf8 32.Rxh7+- Be6 33.f4 33.Rb7 Bd7 34.Kg3+- Komodo10; infiltrating with the K 33...Bf7 34.f5 34.h4 34...gxf5 35.gxf5 Ra8 36.f6 Rc8 37.Kg3 37.Kf3 Rc4 38.Ke3 Komodo10 37...Rc4 38.Be5 Ke8 38...b4 39.cxb4 Ke8 40.Bd6+- 38...d4! Komodos 39.cxd4 b4 40.Bd6+ Ke8 41.Rh8+ Kd7 42.Be5 b3 43.Rb8 Rc3+ 44.Kg4 Be6+ 45.Kg5 Rxh3 46.Rb6 Bf7 47.d5 Rh5+ 48.Kf4 Rh4+ 49.Kf5 Rh5+ 50.Ke4 Rh4+ 51.Ke3 b2 and Bl is still fighting, as Wh's best looks likely to be a drawn R& B vs R ending 52.Rd6+ Kc7 53.Re6+ Kd7 54.Re7+ Kc8 55.Bxb2 Bxd5 39.Rh8+ Kd7 40.Rb8 Ke6 41.Bd4 b4 42.Rxb4 Rxb4 43.cxb4 Kf5 the passed b pawn is too much 1–0
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WhiteEloWBlackEloBRes
Williams,A2342Robinson,A17681–0
Van Kemenade,J1743Jones,I22190–1
Haigh,A1903Francis,M1704½–½
Corrigan,J1449Osinga,A13861–0

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