GM Ahmed Adly (2602) - IM Lim Yee Weng (2333)
Istanbul Olympiad, Round 3, 30.8.2012
Analyzed by Centaur (Hairulov + Rybka 4)
1.Nf3 d5 2.c4 c6 3.d4 Nf6 4.Nc3 e6 5.Bg5 dxc4
Yee Weng play the dreaded Semi Slav Meran Botvinik Variation! 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 don't worry guys, this is still theory normal. The Botvinik Variation has been studied till moves 30+! 9...hxg5 10.Bxg5 Nbd7 11.exf6 Bb7 12.g3 c5 13.d5 Ne5 Ok now Yee Weng has choose a not popular continuation. The main line is 13...Qb6 14.f4?
This is a mistake. correct is 14.Bg2 not worrying 14...Nd3+ and white should not worry to lost his right to castle and play 15.Kf1 14...Bxd5 15.fxe5?
This could be the decisive mistake. Correct is 15.Nxd5 Nd3+ 16.Bxd3 Qxd5 although black still have big advantage. After the text move, black will now win material and gain big advantage after 15...Bxh1 16.Nxb5 Qa5+ 17.Nc3 Rxh2 Black position is overwhelming! 18.Bxc4 Bc6 Threatening Rh1+ and then win the a1 rook! 19.Qb3
19... 0-0-0 a safe choice but stronger is to be greedy with 19...Rh1+! 20.Ke2 Rxa1 (win a rook) and not worrying about 21.Bxe6 because black can play 21...c4! 22.Bxf7+ Kd8 23.Qxc4 Qxe5+! and it is white's king who is in danger.
20.Rc1 Rd4! threatening Re4+ 21.Kf1 Bh6! Ahead in material, Yee Weng correctly choose to exchange pieces. 22.Bxe6?
a desperate sacrifice to confuse Yee Weng who has about 10 minutes left before reaching the first time control - move 40.
22...fxe6 23. Qxe6 Kb7 23...Kc7 is more accurate because it didnt give white the option of playing Qb3+ 24.Qb3+ Kc7 25.Bxh6 Qa6+ Now black is totally winning. He only has to avoid making blunder and reach the first time control but i bet GM Ahmed Adly will resign in few more moves!26.Kg1?? Rh1+ 26...Rg2+! is mate on 7 (maximum) 27.Kf2 Rh2+ 28.Ke1?? a blunder in already losing position. White can prolong the game a little bit with 28.Kg1. 29...Re4+ now it is mate in 2 . Of course now 30.Nxe4 will be checkmate with 30...Qe2++! and if 30.Be3 Rxe3+ 31.Kd1 Qd3++ checkmate so GM Ahmed Adly the 2007 African champion resign! 0-1
Splendid performance Yee Weng!