Saturday, 7 October 2017

Secret Weapon

For the first time in several years, Aberystwyth is only fielding one team in the Dyfed League this year, due to the transport problems which affected us last season. On the plus side, we have acquired a new secret weapon in Brendan-Budok Durand-Le Leduc, whose rating of 2172 makes him the third-strongest player in the league. We were thus able to field a really strong team for the first match of the season, against Steynton B at the Emlyn Cafe, Tanygroes on Wednesday 4 October. There were no fireworks in the early stages of Brendan's top board game against John Miller; a closed Sicilian yielded a level middle-game, which lasted until White allowed a passed pawn and fell into a deadly pin in capturing it. Rudy van Kemenade played the enterprising Tennison Gambit against Gwyn Evans's Scandinavian, and quickly succeeded in disconcerting his opponent, who not only dropped the exchange but allowed a decisive queen invasion. Julie van Kemenade also won material early, picking up a piece against Jonathan Jones by a well-known trick, and then built up patiently for a crushing assault on White's king. Sam Holman's Ruy Lopez against Ray Greenwood began sharply, then reached a tense late middle-game (or early endgame?) in which he was helped by Black blundering a piece, and went on to finish neatly. A clean sweep for Aberyswyth, 4-0.

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1.e4 c5 2.Nf3 e6 3.Nc3 3.d4 main, but Wh prefers to head for a Closed Sicilian variant cxd4 4.Nxd4 a6 5.Be2 Qc7 6.0-0 b5 7.Be3 Bb7 8.f3 Bd6 9.g3 Nf6 10.Bxb5 Bxg3 11.Qd2 Be5 12.Bd3 d5 13.Nc3 dxe4 14.fxe4 Ng4 Gerfault-Durand Le Ludec, Angers op 2014,0-1 3...a6 4.g3 b5 4...Qc7 5.Bg2 Nc6 6.0-0 Nf6 7.d3 Be7 8.Bd2 d6 9.Ng5 h6 10.Nh3 b5 11.f4 Bb7 12.Nf2 0-0 13.Be3 Miller-Martin Jones, Dyfed League apr 2017,1-0; a strategy discussed in the pm analysis to the present game. 5.a3 5.Bg2 Bb7 6.d3 main; Wh need not worry about b4 ,which disrupts the Bl Q side pawns 5...Bb7 6.d3 Nf6 6...g6 was preferred by Bl in pm analysis, to put the bl B on a more active diagonal 7.Bg2 Be7N 7...d5 (Rudy) main; more active; 2-4 8.e5 Bl's concern, having to defend against a King's Indian Attack; but 0-2 8.0-0 8.e5 Nd5 9.Ne4 Komodo11 8...0-0 9.Bd2 9.e5 Cloud Engines 9.Be3 Brendan d5= Rudy 9...d6 10.Qe2 10.Ng5 h6 11.Nh3 Nc6 12.f4 John d5 Komodo11,open centre in response to K side attack. 10.Re1 Nbd7 11.e5= Komodo11 11.d4 cxd4 12.Nxd4 Ne5 10...Nc6 11.Nd1 11.Rae1 11...Nd4 11...d5 Komodo11 12.Nxd4 cxd4 13.c3 dxc3 14.Bxc3= Qb6 14...d5 Komodo11 15.h3 not necccessary 15.Ne3 15.Qe3 15...a5 16.Qe3 Nd7 17.Qxb6 Nxb6 18.Ne3 18.Bd4 Komodo11 Nd7 18...Na4 19.Nc3 19.b4 Rfc8 19...Nc5 19...Nxb2 20.Nxb5 Nxd3 21.Rfd1 Ne5 22.a4 Komodo11 considers = as Wh has play for the pawn 19.Ne3= 18...Na4 19.f4 19.d4 Nxc3 20.bxc3 Bc6 21.c4= Komodo11 19.Rab1= Komodo11 19...Nxc3 20.bxc3 Rac8 the position now has that slight imbalance in pawn structure that favours the higher rated player in practice 21.Rfc1 Ba6 22.Bf1 22.d4!? 22.Kf2!? both Komodo11 22...Rc7 22...g6 creates an escape square for the K 23.a4= eyeing the back rank Ra8 24.d4 b4 25.Bxa6 Rxa6 Komodo11 26.c4 gives Bl a passed pawn, but maybe Wh gets chances in the centre 26.Kf2= 26...Rb6 26...Bf6 27.Rd1 27.e5 dxe5 27...Bd8 Komodo11 28.fxe5 Bg5 29.Kf2 f6 27...e5 28.fxe5 dxe5 29.d5 Be7 & the Wh centre advance is blocked;Komodo11 27.Rab1 b3 this could wait; the advance can cause disruption in the Wh side,but the pawn might be lost . 27...h5 bolt hole for K 28.d5 gives the B a good diagonal,however 28.e5 dxe5 29.fxe5 f6 28.Rc3 Rcb7 29.c5 dxc5 30.dxc5 Rb4 31.c6 Rc7 32.Rbxb3 Rxc6 33.Rxc6 Rxb3 34.Rc8+ Bf8 35.Kf2 Rb4 36.Nc4 Rxa4 37.Ne5 Rd4 38.Ke3 Rd1 39.Ke2 Rd4 40.Ke3= repetition; Komodo11 Rd6 41.Ra8= 28.Kf2 g5 29.Rc3 gxf4 30.gxf4 Rcb7 31.c5 dxc5 32.dxc5 Rc6 33.Kf3 Bxc5 34.Nd1 Rcc7 35.Rbxb3 Bd4 36.Rxb7 Rxb7 37.Rc4 Bg1 38.f5= Komodo11 28...Bf6 29.Nd1 29.e5! Komodo11 Bl thought that Wh ought to have tried this- looked at in pm analysis. Wh can get 2 dangerous advanced centre pawns & Bl has to keep a watchful eye on the backrank. dxe5 29...Be7 30.Rc3 30.c5 Rxc5 31.Rxc5 dxc5 32.d6 Bd8 33.Kf1 Rb4 34.Ke2 g5 35.Kd3 gxf4 36.gxf4 Kf8 30...b2 31.Rc2 30.c5 Rb8 31.c6 Rb6 32.Nc4 Rb8 33.Nd6! exd5 34.Nb5 Re7 35.Rxb3 h6 36.Rc5 exf4 37.gxf4 Rc8 38.Kg2± d4 39.Nd6 Rd8 40.Nf5 Rc7 41.Rb7 Rdc8 42.Rxc7 Rxc7 43.Kf3± 29...Bd4+-+ 30.Kf1 b2 30...exd5 31.exd5 b2-+ Komodo11 31.Rc2 31.Nxb2 Rxb2-+ 31...Bxb2 32.e5 Rcb7 33.c5 Bxc1 34.Rxb6 Rxb6 35.cxb6 Be3 36.b7 Ba7-+ 31...Rb4 32.Nxb2 Rcb7 0–1
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WhiteEloWBlackEloBRes
Miller,J1677Durand Le Leduc,B21720–1
Van Kemenade,R2028Evans,G14531–0
Jones,J1500Van Kemenade,J17520–1
Holman,S1305Greenwood,R11791–0

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