Cleanish Sweep

Aberystwyth was not quite able to raise the eight players required for the A versus B match on Tuesday 21 March, so the match took place on three boards only. Both James Corrigan and Rudy van Kemenade enjoy complex tactical positions, so it was no surprise when James, playing White for the B team, managed to conjure up an unexpected attack in a Three Knights' Game and Rudy found dangerous counterplay. Analysis reveals that James missed a couple of chances, but when the attack ran out of steam, Black had a big lead in material. I played quietly against Sam Holman's Sicilian, transposing to an English-type position, in which I was the first to break in the centre. Sam's counter with the f-pawn created a weakness on e6, allowing me to establish a knight there, which proved a decisive advantage. Damien Clarke was unable to maintain the White pawn centre against Tony Geraghty in a Slav Defence, and then compounded his difficulties by dropping a piece, leaving Black with an easy win. The unplayed game has been registered as a win for the A-team, no doubt under League regulations, so the result is a 4-0 victory for them.

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Move	N	Result	Elo

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1.e4 e5 2.Nf3 Nf6 3.Nc3 Bb4 4.d3 d6 5.h3 5.Be2 main 5...c6 5...h6 6.Bd2 Nbd7 7.a3 7.Be2 Nf8 8.0-0 8.Nh2 Ng6 9.a3 Ba5 10.b4 Bc7 11.Bg5 h6 12.Be3 0-0 13.0-0 d5 Canaviri-Cortes Orihuela, American Continental, Cochabamba 2013,0-1 8...Ng6 9.a3 Ba5 10.b4 Bc7 11.Bg5 h6 12.Be3 0-0 Illes-Lauk, Dos Hermanas Internet blitz 2003,0-1 7...Ba5 8.Be2 8.b4 Bc7 9.d4 Qe7 10.Bd3 Nf8 11.0-0 h6 12.Re1 g5 13.Bc4 Ng6 14.Be3 14.dxe5 dxe5 15.b5 Nf4 Mgurami-Hearthstones9, playchess.com 2012,0-1 14...Nf4 simica-hearthstones9, chesscube.com 2013,0-1 8...Nf8 9.0-0 9.b4 Bc7 10.Nh2 h6 11.0-0 g5 12.Ng4 Ng6 J May-Van Kemenade, Arena 2016,0-1 9...h6 10.Re1 10.b4 Bc7 11.Na4 11.Nh2 as above 11...g5 12.c4 Ng6 13.Nh2 Nf4 niranjan2000-hearthstones9,chesscube, 2014,0-1 10...g5 11.d4 Qe7?! 11...Ng6= Deep Fritz13 & Komodo10;considered; looks more accurate as perhaps the Q can get to f6 in one go. Also it doesnt allow the next tactic spotted by both engines 12.dxe5 12.Nd5!+- both Engines Nxd5 12...cxd5 13.Bxa5 Nxe4 13...dxe4 14.dxe5 dxe5 15.Nxe5+- 14.dxe5 Be6 15.Bb5+ Nd7 16.c4 0-0 17.exd6 Nxd6 18.Bxd7 Qxd7 19.Ne5 Qe8 20.cxd5 Bf5 21.Ng6+- 13.Bxa5 Nf4 14.dxe5 dxe5 15.Nxe5!+- Nxe2+ 16.Qxe2 Ne6 17.Qd2 0-0 18.Ng4 Kh7 19.Bc3 f6 20.e5 f5 21.Nf6+ Kg6 22.Qe3+- Komodo10 12...dxe5 13.Bc4 13.Nd5!+- both Engines 13...Ng6= 14.b4 Bc7 Komodo10 14...Bb6!? Deep Fritz13 15.Be3 Nh5 15...Nd7 considered 16.Bc5 16.Nxg5 hxg5-+ 16.Nxe5 Nxe5-+ 16...Bxe5-+ 16...Qxe5 16...Qf6 17.b5 17.Nb5! both Engines Bb8 18.Nh2 Nhf4 19.Ng4 Bxg4 20.Qxg4 Ne6 21.Rad1 Ngf4 21...Nxc5 22.bxc5 0-0 23.Nd6 Bxd6 24.Rxd6 Qg7 25.Rb1 Rab8 26.a4+- Komodo10 17.Nd5 considered by bl cxd5 18.Bb5+ Bd7 19.Bxd7+ Kxd7 20.Qxd5+ Kc8-+ Komodo10; pm analysis 17...Ba5 17...Bb6 both Engines 18.Qd6 Bxc5 19.Qxc5 Qe7 20.Qe3 0-0 21.bxc6 bxc6 22.Rad1 Nhf4 23.Ne2 Komodo10 18.bxc6 18.Re3 James; pm analysis; both Engines Bb6 18...Bxc3 19.Rxc3+- Nhf4 20.bxc6 bxc6 21.Rb1 h5 22.Rcb3 g4 23.Rb8 Rxb8 24.Rxb8 Ne7 25.Ne1 gxh3 26.Qd6 Qxd6 27.Bxd6 hxg2 27...f6 28.g3 Nfg6 29.Be6 Kd8 30.Nd3 Nf8 31.Bxh3 Nd7 32.Ra8 a6 33.Nc5+- 28.Bxe5 Nh3+ 29.Kxg2 Rg8+ 30.Kf1 h4 31.Nf3 Rg4 32.Bd6 Rxe4 33.Bd3 Ra4 34.Bxe7 Kxe7 35.Rxc8+- Komodo10 19.Bxb6 axb6 20.Rb1 Nhf4 21.bxc6 bxc6 22.Rxb6 0-0 23.Nd5 Qd6 24.Qd2 Rd8 25.Nxf4 Qxd2 26.Nxd2 exf4 27.Rd3± 18.Bb4 considered by both Bxb4 19.axb4 0-0 20.bxc6 bxc6 21.Ra3 21.b5 Nhf4 22.bxc6 Qxc6 23.Bd5 Nxd5 23...Qxc3 24.Bxa8 Bxh3 Komodo10 equal, briefly looked at , thought too risky; but Bl gets good chances around a weakened K side 25.Re3 25.gxh3 Nxh3+ 26.Kh2 26.Kf1 Rxa8 27.Re3 Qc8 26...Nxf2 26...Ngf4 27.Ng1 Nxg1 28.Re3 Qc8 29.Kxg1 Qxa8= 27.Qe2 Ng4+ 28.Kg3 Nf4 29.Qa6 Nh2 30.Ra3 Qxc2 31.Ra2 Nh5+ 32.Kh3 Qc3 33.Kxh2 33.Ra3 Qc5 34.Ree3 34.Nxh2 Qf2 35.Qf1 Nf4+ 36.Kg4 Qxh2-+ 34...Nxf3 35.Rxf3 Qg1 36.Qf1 Qxf1+ 37.Rxf1 Rxa8 Komodo10 25...Qc7 25...Qc8 26.Ne1 Bxg2 27.Bd5 Bh3 28.Rxa7 Nxd5 29.exd5 Nf4 30.d6 Rd8 31.Rxe5 Qc6= Komodo10 26.Bd5 Bxg2 27.Ne1 Bh3 28.Rea3 Qc8 29.Rxa7 Nxd5 29...Bg4 30.Bb7 Qe6 31.Bd5= 30.exd5 Bg4 31.f3 Bf5 32.d6 Qc5+ 33.Kh1 Kg7 34.Qd2 Rd8 35.R7a6 Bc8 36.Ra8 Nf4 Komodo10 24.Nxd5 pm analysis Kh8 25.Ra3 f6 26.Rc3 Qd6 27.Rd3 Ne7 28.c4 Nxd5 29.cxd5 a5 Komodo10 18...Bxc3 19.c7 considered = by Deep Fritz13 19.cxb7= Komodo10 Bxb7 20.Rb1! 20.Bb5+ Bc6 21.Qd5 Rc8-+ 20...Bc6 21.Re3 Ba5 22.Nh2 22.Nd4 Rd8 23.Bd5 Bxd5 24.exd5 Rxd5 25.Rb5 Bb6 26.Bxb6 Rxb5 27.Nxb5 Qxb6 28.Rb3 0-0 29.Qxh5 Qc6 30.Nxa7 Qxc2 Komodo10 22...Nhf4 23.Ng4 Qd8 24.Qf1 Bb6 25.Rd1 Bxc5 other moves lose 26.Rxd8+ Rxd8 27.Rc3 h5 28.Ne3 Bb6 29.Bxf7+ Kxf7 30.Rxc6 Rhe8= Komodo10 19...Bd7 19...a6 20.Rb1 Ba5 20...Bxe1 21.Rb6+- 21.Bb6 Bxb6 22.Rxb6 Qe7 23.Rxg6 fxg6 24.Nxe5 Qxc7 25.Bf7+ Qxf7 26.Nxf7 Kxf7 27.Qd5+ Kg7 28.Re3 Re8 29.Rc3 Be6 30.Qxb7+ Kg8 31.Rc7 Rab8 32.Qxa6 Bf7 33.Kh2= Komodo10 20.Qd5 not the best 20.Rb1 both Engines Bxe1 20...b6 21.Re3 bxc5 22.Rxc3 Nhf4 22...Rc8 23.Rd3 Rxc7 24.Rd6 Be6 25.Nh2 Nhf4 26.Ng4 Bxg4 27.Rxf6 Bxd1 28.Rb8+ Ke7 29.Rxf7+ Kd6 30.Rf6+= repetition, Komodo10 23.Rb8+ Ke7 24.Rcb3 Qc6 25.R3b7 Bc8 26.Rb3 Qxe4 27.Ba6 c4 28.Bxc8 cxb3 29.Bb7 Raxb8 30.cxb8Q Ne2+ 31.Kh2 Qf4+ 32.g3 Rxb8 33.gxf4 Rxb7 34.Qxe2 b2 35.Nd2 gxf4 36.Nb1+- Komodo10, which initially thought that b6 was best for Bl 20...Qc6 21.Re3 21.Bb5 Qxc7-+ 21...Qxc5 22.Rxc3 Ke7 23.Rxb7 Nf6 Komodo10 21.Rxb7= Deep Fritz13 Rc8 22.Rb8 Ne7 23.Bb5 0-0 24.Qxd7 Bxf2+ 25.Kxf2 Rxb8 26.Bxe7 Qb6+ 27.Ke2 Rbc8 28.Bxf8 Rxc7 29.Qe8 Nf6 30.Bc5+ Nxe8 31.Bxb6 axb6 32.Bxe8 Rxc2+ 33.Nd2 Kf8 34.Bb5 Ra2 35.a4 Ke7= Komodo10 20...Bc6-+ 21.Rad1 21.Bb5 Bxb5? intended by Bl & seen by Wh; also pm analysis pm analysis; should actually lose 21...Nhf4!-+ as in the game, holds everything. 22.Qxb7 22.Rab1 Bc6 23.Rxb7 Bxd5 24.Rb8+ Kd7-+ calculated by Bl 22...Qc6 22...Bc6 23.c8Q+ Rxc8 24.Qxc8+ Qd8 25.Qxc6+ Qd7 26.Qa8+ Qd8 27.Qxa7 Bxe1 28.Rb1+- Komodo10 23.Qb8+! Kd7 24.Red1+ Ke6 24...Bd4 25.Nxe5+ Ke6 25...Nxe5 26.Rxd4+ Ke6 27.c8Q+ Rxc8 28.Rd6+ Ke7 29.Rxc6+ Ke8 30.Rxc8+ Kd7 31.Qb7+ Ke6 32.Qe7# 26.Nxc6 Raxb8 27.Nxd4+ Kf6 28.cxb8Q Rxb8 29.Rab1 a6 30.a4+- 21...Nhf4 playing safe 21...Bxd5 best according to both Engines 22.Rxd5 Bxe1 23.Bb5+ Qc6 24.Bxc6+ bxc6 25.Rd8+ Rxd8 26.cxd8Q+ Kxd8 27.Nxe1 Nhf4 leaves Bl a R up 22.Qxf7+ 22.Qd8+ Komodo10 Rxd8 23.Rxd8+ Qxd8 24.cxd8Q+ Kxd8 25.Re3 b6 25...Bb2 26.Rb3 b6 27.Bxb6+ axb6 28.Rxb2 Bxe4 26.Rxc3 bxc5 27.Nd2 Ke7 leaves Bl a piece up 22.Qd6 Deep Fritz13 Qxd6 23.Bxd6 b5 24.Bf1 Bxe1 25.Nxe1 f6-+ 22...Qxf7 23.Rd8+ 23.Bxf7+ Kxf7 & the h8 R protects against Rd8 23...Rxd8 24.cxd8Q+ Kxd8 25.Bxf7 Bxe1 26.Nxe1 Bxe4 26...b6 27.Be3 Bxe4 Komodo10 0–1

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White	EloW	Black	EloB	Res

Corrigan,J	1449	Van Kemenade,R	2009	0–1
Francis,M	1704	Holman,S	1334	1–0
Clarke,D	1177	Geraghty,A	1551	0–1

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