27...Rfd8 28.g3 Ng6 29.Kg2 Ne7 30.Be3 Nf5 31.Bb6 Rdb8 32.c5 Ne7 33.Bc4 Nd5 34.Bxd5 exd5 35.Nd4 Kf7 36.Nc6 Re8 37.Rd4 Rec8 38.Na5 Ke6 39.Rd2 Rab8 40.Nb3 g6 41.Nd4+ Kd7 42.Nc2 Kc6 43.Nb4+ Kb5 44.Nxd5 a5
A sudden and deadly move. It is possible because the black queen, which has come out ahead of its minor pieces, has very few squares. White defends the weakness on g5, whilst Black has no way to defend the e4-pawn.
The key point lies in the continuation 15...exf3 16.e4 f2+ 17.Ke2!, and the queen is trapped in the centre of the board.
White traps the queen in beautiful style in the variation 16...Nb4 17.Qb1 Nd3+ 18.Qxd3 exd3 19.e4.
White has won the central pawn for no compensation, and gradually realised it.
Unity Chess Club
Predrag Nikolic 2625 Alexander Khalifman 2660 Ter Apel 1994 Black to move
White wants to exert pressure on the c-file, considering that his knight on e5 is invulnerable. However, he has not castled, and this creates the preconditions for a tactical operation by Black:
The only move.
It turns out that he cannot capture with 14.dxe5, because of 14...Rac8. c1 hangs, and there is a threat of ...Bf5-c2, whilst after 15.Qd1 (15.Bc4 Nb6 is no better) 15...Bc2 16.Qd4 Bd3!, White suffers material losses.
It turns out that he cannot capture with 14.dxe5, because of 14...Rac8. c1 hangs, and there is a threat of ...Bf5-c2, whilst after 15.Qd1 (15.Bc4 Nb6 is no better) 15...Bc2 16.Qd4 Bd3!, White suffers material losses.
Black has almost sufficient material for the queen. However, the difference in piece and pawn positioning is enormous – Black has a lovely knight, a safe king, and simple play on the c- and d-files. White faces a difficult defence to save the game.
Unity Chess Club
Edwin Adams Carlos Torre Repetto New Orleans 1920 White to move
White begins a hunt for the black queen, which defends the back rank.