Tsume Shogi Puzzle 8: Mate in 1

Mate in 1 Theme: Bishop drop on the long diagonal

Black to move and mate in 1. Black has a bishop in hand. Every attacking move must give check, and the defender always plays the toughest reply. Find the one move that leaves the king no answer.

Solve it on the board above and the explanation appears automatically. If you are stuck, the Show solution button plays the line through, or open the spoiler below.

Reveal the solution

Black: B*3c (B*3c)

Drop the bishop on 3c to check along the diagonal. The gold on 1c and the rook on the second file cover both flight squares.

Keep practicing

Puzzle 8 of the mate-in-3 set raises the difficulty.
All 20 puzzles in one place.
New to checkmate problems? The tsume shogi guide explains the rules and conventions.