Chess tactic

Crushing Puzzle (2341)

After the setup move f5, it is White to move. Find the forcing continuation before checking the solution.

Position after f5. White to move.

Puzzle ID

09iQD

Rating

2341

Side to move

White

Themes

Crushing, Endgame

Material

Black is ahead by 4 points

FEN

3k4/2r4p/PK6/1P3p2/8/8/7P/8 w - - 0 41

What to look for

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

41. a7 41... Rc8 42. Ka6 42... Kd7 43. b6

The full forcing line from the source position is:

40... f5 41. a7 41... Rc8 42. Ka6 42... Kd7 43. b6