Chess tactic

Endgame Puzzle (1523)

After the setup move Ka5, it is White to move. Find the forcing continuation before checking the solution.

Position after Ka5. White to move.

Puzzle ID

0WKVp

Rating

1523

Side to move

White

Themes

Endgame, Mate, Mate in 3

Material

Black is ahead by 4 points

FEN

8/8/2b5/kp1q4/8/4Q3/1K6/8 w - - 15 57

What to look for

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

57. Qa7+ 57... Kb4 58. Qa3+ 58... Kc4 59. Qc3#

The full forcing line from the source position is:

56... Ka5 57. Qa7+ 57... Kb4 58. Qa3+ 58... Kc4 59. Qc3#