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.
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Edwin Adams Carlos Torre Repetto New Orleans 1920 White to move
White begins a hunt for the black queen, which defends the back rank.
Not 19.a4 Qxe2 20.Rxe2, because of 20...Rc1+, and it is White who is mated!
Unity Chess Club
Grigory Levenfish Nikolai Riumin Moscow 1936 White to move
Black has no bolthole for his king, his bishop is undeveloped, and the dark squares around his king are weak. White could exploit these factors by means of...
In the game, White missed this possibility, and after 27.Ng3 Qb5 28.Rfe1 Bb7, the game equalised out.