Chess tactic

Endgame Puzzle (1149)

After the setup move Kb3, it is Black to move. Find the forcing continuation before checking the solution.

Position after Kb3. Black to move.

Puzzle ID

0d3bT

Rating

1149

Side to move

Black

Themes

Endgame, Mate, Mate in 1

Material

White is ahead by 3 points

FEN

3r4/2Nb4/7p/2kP1pp1/1pn2p2/1K6/PPP3PP/3RR3 b - - 2 25

What to look for

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

25... Na5#

The full forcing line from the source position is:

25. Kb3 25... Na5#