critical moment in the endgame.

Technique and Tactical motifs in the endgame.
White just played Ne7. How do you finish off ?

Black to play and win

Sicilian Scheveningen Attacking Tactics ( Part II)

In the previous post, we have presented three GM games showing attacking themes occuring when White plays Qe1-g3 in the Scheveningen. The two following positions are taken from the same variation. The study of the previous post should facilitate solving the tactics here.
Good Luck !

1. White to play and win

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2. White to play and win

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Solutions here (replayable through a chess board)
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Ivanchuk is on a roll (Black to play and win) !

Ivanchuk just finished clear first at the top tournament M-Tel in Sofia, Bulgaria.

He scored 8/10 in a field composed of Topalov, Cheparinov, Aronian, Radjabov and Bu Xiangzhi.

Can you spot the tactical theme in the following game Cheparinov-Ivanchuk, where the creative super GM had the black pieces ?

Black to play and take a decisive advantage

Cheparinov-Ivanchuk 2008
Replay solution on a chess board here

Solution also posted in the comments section !