A. Bassem - A. R. Khaled, Tunis 2013

White to move and win.

Tactic Themes: Blockade, Pawn Promotion, Demolition of Pawn Structure

SOLUTION:

White has great advantage in space and hence in pieces activity. How can he give the final strike?

1. Bxg6!

White wants to create a strong remote passed pawn.

1... fxg6

Black must take the Bishop or lose even more pawns. (1... hxg6 leads to the same tactic motif.) We have the passed pawn, but, how to queen it?

2. Rb8!!

White avoids the unique defense, Ra8, by forcing the black King to be placed on the back rank thus making Rb8 ineffective.

2... Kxb8 3. f7

Black resigns.

1-0