Chess tactic

Endgame Puzzle (1326)

After the setup move Kb4, it is Black to move. Find the forcing continuation before checking the solution.

Position after Kb4. Black to move.

Puzzle ID

0fYJF

Rating

1326

Side to move

Black

Themes

Endgame, Mate, Mate in 3

Material

White is ahead by 1 point

FEN

8/p3kp1R/1p1p4/1N1P4/1K1BP3/6r1/PPr5/8 b - - 1 35

What to look for

A tactic from a reduced-material position where king activity and promotion threats matter.

35... a5+ 36. Ka4 36... Rc4+ 37. b4 37... Rxb4#

The full forcing line from the source position is:

35. Kb4 35... a5+ 36. Ka4 36... Rc4+ 37. b4 37... Rxb4#