Saturday, 11 November 2017

Still on Track

The new unified Aberystwyth team had made the perfect start to the season, with two 4-0 wins, and, with a key match against Cardigan A coming up in December, were anxious to continue their good form against Gwyddbwyll.com at Brynamlwg on Tuesday 11 November. Team captain Rudy van Kemenade was planning to rest himself, but, when Brendan-Budok Durand-Le Leduc hadn't appeared by the start time, he took over the top board role. His opponent was his former chess student Iwan Griffiths, a talented player whose grading, well below Rudy's, probably doesn't reflect his true strength. In a Three Knights' Game, Iwan gave up a piece for the attack, and only regained it when the game was entering an ending. With the material balance restored, White still had the advantage, and went on to clinch a fine win. I was also facing a familiar opponent in Owen Llywelyn; I have had White in every one of our many match games, for some reason, and, before tonight, each had been a Caro-Kann. This time he decided to avoid my preparation, and replied e5, leading to a Vienna Gambit. Things were quiet at first but when I picked up a pawn in front of his king, he lashed out with a counter-combination that proved not to work, leading to a quick win for me. Tony Geraghty's opponent, Dylan Jones, in his first match for the club, was also aggressive, sacrificing a piece in a French Exchange, but there was not enough of an attack to justify his boldness. Finally, the Board 4 Queen's Gambit between Ian Finlay and Tegwyn Jones seemed to have reached an inoffensive position when Tegwyn lost on time, but subsequent analysis showed that he had a chance for a win, which would have led to a drawn match. As it is, Aber's 3-1 win keeps us on track for the time being.

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1.e4 e5 2.Nf3 Nf6 3.Nc3 Bb4 4.Bc4 d6 5.d3 c6 6.0-0 h6 7.a3 7.h3 Nbd7 8.Qe2 Nf8 9.d4 Qe7 10.dxe5 dxe5 11.Bd2 g5 12.a3 Bd6 13.Nh2 Ng6 14.Rad1 Nf4 Cavendish-Van Kemenade, BCF ch W1 PM , Aberystwyth 2014,0-1 7...Ba5 8.b4 Bc7 9.Re1 9.Bb2 0-0 10.Qe2 Bg4 11.h3 Bh5 12.g4 Bg6 13.Nh4 d5 14.Nxg6 fxg6 15.Bb3 Kh7 Keller-Kettler, Augsburg op 2013,1-0 9...Nbd7 10.Bb2 Nf8 10...0-0= Komodo11 11.d4 Qe7 12.h3 12.Ne2 12...g5 12...Ng6= Komodo11 13.dxe5 dxe5 14.Ne2 Nxe4?! an afterthought 14...g4 15.hxg4 Bxg4 16.Ng3 N6d7 17.Nf5 Qf6 18.Qe2 0-0-0= Komodo11 14...Nh5 15.Ng3 Nxg3 15...Nf4 16.Nf5 Qf6 17.Bxe5 Bxe5 18.Nxe5 Qxe5 19.Nd6+ Ke7 20.Nxf7+- 16.fxg3 Ng6= Komodo11 15.Bxe5 15.Ng3+- Nxg3 16.Nxe5 16.fxg3 f6= hoped for by Bl 16...Be6 17.Ng4 Nd7 18.Bxh8 0-0-0 19.Bb2 Nf5 20.Qf3+- Komodo11 15...Bxe5 16.Nxe5 Qxe5 17.Ng3 f5 18.Qh5+ 18.Qd3 Be6 19.Rad1 Kf7 20.Nxe4 fxe4 21.Rxe4 Qf6 22.Bxe6+ Nxe6 23.Qd7+ Qe7 24.Qxe7+ Kxe7 25.Rde1 Rh7 26.Rxe6+ Kd7± Komodo11 18...Kd8 19.Rad1+ 19.Qf7 Bd7 20.Rad1 Kc7-+ 19...Kc7 19...Bd7 20.Qf7 Kc7 as above, avoided by Bl because of 21.Rxd7+ Nxd7 22.Be6 22.Rd1 Qe8 22...Nd6 is a simplifies to a win for Bl 22...Rad8 22...Qd4! Komodo11 23.Bxf5 23.Nxe4 Rhf8!-+ 23...Qf6 24.Qb3 Nd6-+ Komodo11 20.Qf7+ Kb6 20...Bd7-+ original idea 21.a4 a6 22.a5+ Ka7-+ 23.Rd8 Be6?! 23...Ng6 24.Rxh8 Nxh8 25.Qf8 Bd7 25...Be6 26.Qe7 Qd4 27.Nxe4 Bxc4 28.Nd6 Rb8 29.Qc7 Nf7 other moves are = 30.Nxf7 30.Nc8+ Rxc8 31.Qxc8 Nd6 32.Qd8 Nb5 30...Bxf7 31.Qxf7 Qxb4 26.Qxh6 Qc3 27.Rd1 Qxc2 28.Be2 Rd8 29.Nxe4 Qxe2 30.Nc3 Qe7-+ Komodo11 23...Bd7 24.Rxa8+ Kxa8 25.Bd3 Qc3 26.Rf1 Nd6 27.Qe7 Nc8 28.Qf7 Be6 29.Qc7 f4 29...Ng6 30.Nxf5 Nf4 31.Ne3 Re8-+ 30.Ne4 Qxb4 31.Qe5 Rh7 32.Nxg5 Re7-+ Komodo11 23...Qc3 24.Re3 Qa1+ 25.Kh2 Ng6 26.Rxc8 Raxc8 27.Nxe4 27.Qxg6 Nxg3 28.Rxg3 Qd4-+ 27...fxe4 28.Qxg6 Qe5+ 29.Kg1 Rce8-+ Komodo11 24.Rxa8+ Kxa8 25.Qe8+ 25.Bxe6 Qc3! 25...Nxe6 26.Qxf5 Qxf5 27.Nxf5 N4c5 28.bxc5 28.Re5 Nd3 29.Rxe6 Nxb4 30.Nxh6 Nxc2 31.Nf7 Rg8 32.Re5± 26.Re3 26.Rxe4 fxe4 27.Bc8 Qxb4 28.Bf5 Qd4 29.Qe7 Qd5 30.Bc8 Qb5 31.Bf5= Komodo11 26...Qa1+ 27.Kh2 Nd6 28.Qe7 f4 29.Qd8+ Ka7 30.Ne4 Nd7 30...Nxe4 31.Qb6+ Kb8 32.Rxe4± 31.Qxd7 fxe3 32.Nxd6 Rb8 33.fxe3 Qe5+ 34.g3 Qxe3 35.Nc8+ Rxc8 36.Qxc8 Qf2+= Komodo11 25...Qb8?! another afterthought 25...Ka7 26.Nxe4 fxe4 27.Rd1 Ng6 27...e3 28.Rd8 exf2+ 29.Kh1 Qe1+ 30.Kh2 Bc8 31.Rxc8 Qxe8 32.Rxe8 Ng6 33.Rxh8 Nxh8 34.g3 Nf7 35.Kg2 Ne5 36.Be6 b6 36...b5 37.Kxf2 c5 38.bxc5 Nc6 39.Bd5 Nxa5= 37.Kxf2 Kb8 37...Kb7 38.Ke3 c5 39.Ke4 Nc6 40.bxc5 bxa5 41.Bb3 Ne7 42.Ba4 Kc7 43.h4± 28.Qxe6 Qxe6 29.Bxe6 Nf4 30.Bc4 Rh7 30...Re8 31.Rd6 h5 32.h4 gxh4 33.Rf6 Nd5 34.Bxd5 cxd5 35.Rf5 d4 36.Rxh5 d3 37.cxd3 exd3 38.Rd5 Re4 39.Rxd3 Rxb4= 31.Rd6 h5 32.Rf6 h4 33.g3 hxg3 34.fxg3 Nxh3+ 35.Kg2 g4 36.Rg6 e3 37.Rxg4 Nf2 38.Rh4 Re7 39.Kf3 Komodo11 26.Qxb8+ Kxb8 27.Bxe6 both Bl Ns are in danger on the e file Nxg3 27...Nxe6 28.Nxf5 N4c5 29.bxc5 Nxc5 30.Re5 Nd7 31.Re7± 28.fxg3 Nxe6 the B will be more powerful than the N if left 29.Rxe6± Bl is left with a passive position & losing a pawn Rd8!? 29...Rh7 30.Rf6 Kc7 31.h4 31.Rxf5 Rd7 32.h4 Rd4 33.c3 Rc4 34.h5 Rxc3 35.g4 Rc4 36.Rf7+ Kd6 37.Rxb7 37.Rf6+ Ke5 38.Rxh6 Rxg4 39.Rg6 Rxb4 40.Rxg5+ Kf6 41.Rg6+ Kf7 42.g4 Ra4 and Bl can hold 31...f4 31...g4 32.h5 Kd8 33.Kf2 Ke7 34.Rg6 Kf8 35.Ke3 Re7+ 36.Kf4 Re4+ 37.Kxf5 Rxb4 38.Rxg4 Rb5+ 39.Kg6 Rxa5 40.Kxh6+- Komodo11 32.gxf4 gxh4 33.Kh2 b6 34.axb6+ Kxb6 35.f5 Re7 36.Rxh6 Re4 37.g3! hxg3+ 38.Kxg3 Rxb4 39.Rh4 Rb1 40.Rf4 Rg1+ 41.Kh4 Rg8 42.f6 a5 43.f7 Rf8 44.Kg5 Kb5 45.Kf6 a4 46.Ke7 Rxf7+ 47.Rxf7+- a3 48.Kd6 Kb4 49.Ra7 c5 50.Kd5 c4 51.Kd4 c3 52.Kd5 quickest way to the mate-Nalimov tablebases 30.Rxh6 Rd4 30...g4 31.h4 f4 32.Kh2 32.gxf4 g3 33.Kf1 Rf8 34.h5 Rxf4+ 35.Ke1 Rxb4 36.Rh8+ Kc7 37.h6 Rh4 38.Ke2 and the 2 K side pawns will be very fast 32...f3 33.gxf3 Rd2+ 34.Kg1 gxf3 35.Rg6 Rxc2 36.h5 Rg2+ 37.Kf1 Rh2 38.h6 Kc7 39.g4 Kd7 40.g5 Ke7 41.Rg7+ Ke6 42.h7 Kf5 43.g6 Kf4 44.Rg8 Bl is too slow;Komodo11 nudged 31.h4 31.Rf6 Rxb4 32.Rxf5 g4 33.h4 Kc7 34.Rf4 Rb1+ 35.Kh2 Rb5 36.Rxg4 Rxa5 37.Rg7+ Kd8 38.g4 similar to above note 31...f4 trying toconfuse things 31...gxh4 32.gxh4 32.Rxh4 Rd2 33.c4 c5 34.bxc5 Ra2 35.Rh5 Rxa5 36.Rxf5 Ra1+ 36...b5 37.cxb5 axb5 38.Rf6 Kc7 39.Rb6 Ra8 40.Rxb5+- Lomonosov tablebases 37.Kh2+- 32.gxf4 32.c3 Rd1+ 33.Kf2 Rd2+ 34.Kf1 fxg3 35.hxg5 Rf2+ 36.Ke1 Rxg2 37.Rh3 Rh2 38.g6 g2 39.Rg3+- Komodo11 32...gxf4 32...gxh4 33.Rxh4 Rxb4 34.Kf2 Ra4 35.Kf3 Rxa5 36.g4+- Komodo11 33.Kf2 33.c3 33...Rxb4 34.Kf3 Rc4 35.h5 Rxc2 36.Rf6 36.Rh8+ Kc7 37.h6+- most accurate, the f pawn is dead anyway, so no need to make extra work killing it 36...Rc5 37.h6 Rxa5 37...Rh5 38.Kxf4 c5 39.g4 38.h7 Rh5 39.Rf8+ Ka7 39...Kc7 40.h8Q Rxh8 41.Rxh8 a5 42.Kxf4 a4 43.g4 a3 44.Rh3 44.g5 a2 45.Rh1 b5 46.g6 b4 47.g7 b3 48.g8Q 44...b5 45.Rxa3+ Kb6 46.g5 b4 47.Rb3 c5 48.g6 Ka5 49.g7 c4 50.g8Q cxb3 51.Qxb3 1–0
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WhiteEloWBlackEloBRes
Griffiths,I1634Van Kemenade,R20401–0
Francis,M1756Llywelyn,O15101–0
Jones,D1200Geraghty,A15540–1
Finlay,I1354Jones,T11931–0