Chess tactic

Crushing Puzzle (1635)

After the setup move Ka2, it is Black to move. Find the forcing continuation before checking the solution.

Position after Ka2. Black to move.

Puzzle ID

09Wgk

Rating

1635

Side to move

Black

Themes

Crushing, Discovered Attack, Endgame

Material

White is ahead by 5 points

FEN

6k1/5pp1/7p/Q7/1p1P4/2q2P2/K5PP/1R6 b - - 6 43

What to look for

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

43... b3+ 44. Rxb3 44... Qxa5+

The full forcing line from the source position is:

43. Ka2 43... b3+ 44. Rxb3 44... Qxa5+