Alexander Grischuk, playing his trademark strategic chess, beat Shakhriyar Mamedyarov in the fourth round at the London Chess Grand Prix. It was a closed Spanish game. Grischuk decided to take some space, chasing the white colour bishop by h3-g4. Grischuk kept on pressuring his opponent. After 24 moves, all the black pieces were on the 8th and 7th ranks! That was the moment chosen by Grischuk to sacrifice a knight for three pawns and activity. Mamedyarov was obliged to give back his knight but it was clearly not enough and his position remained completely lost. First victory of the tournament for Grischuk!

Grischuk Alexander – Mamedyarov Shakhriyar

Result: 1-0
Site: FIDE Grand Prix
Date: 2012.09.24
[…] 1.e4 e5 2.¤f3 ¤c6 3.¥b5 a6 4.¥a4 ¤f6 5.O-O ¥e7 6.d3 d6 7.c3 O-O 8.¤bd2 ¦e8 9.¦e1 ¥f8 10.d4 b5 11.¥c2 exd4 12.cxd4 ¥g4 13.h3 ¥h5 14.g4 ¥g6 15.a3 h5 16.g5 ¤h7 17.¤f1 £d7 18.¢g2 d5 19.e5 ¥xc2 20.£xc2 g6 21.¥e3 ¤d8 22.¦ac1 ¦c8 23.¤g3 c6 24.¤h4 ¤e6 25.¤xg6 fxg6 26.£xg6+ ¤g7 27.£h6 ¤f5 28.£xh5 ¤xg3 29.¢xg3 ¥g7 30.£g4 ¤f8 31.f4 c5 32.£xd7 ¤xd7 33.dxc5 ¤xe5 34.fxe5 ¥xe5+ 35.¥f4 ¥xb2 36.¦xe8+ ¦xe8 37.¦c2 ¥xa3 38.c6 b4 39.c7 ¦c8 40.¦c6 b3 41.¦xa6 ¥c5 42.¦a5 ¥b6 43.¦xd5 ¥xc7 44.¥xc7 ¦xc7 45.¦b5 ¢g7 46.¢g4

Black resigns because the ‘b’ Black pawn is very much controlled by White. White also has the connected passer-pawns rolling down the ‘g’ and ‘h’ files. The endgame is totally lost for Black. If Black attempts to save the ‘b’ pawn, White is going to roll down to smother Black.