Chess tactic

Crushing Puzzle (1987)

After the setup move a1=Q, it is White to move. Find the forcing continuation before checking the solution.

Position after a1=Q. White to move.

Puzzle ID

0lIlG

Rating

1987

Side to move

White

Themes

Crushing, Defensive Move, Endgame

Material

Black is ahead by 4 points

FEN

8/8/6P1/8/5P2/1kb1P3/8/q2R2K1 w - - 0 56

What to look for

Find a move that decisively changes the evaluation, usually by force.

56. Rxa1 56... Bxa1 57. e4 57... Bg7 58. e5

The full forcing line from the source position is:

55... a1=Q 56. Rxa1 56... Bxa1 57. e4 57... Bg7 58. e5