Mate in 3 · No. 520 · HarderQueen and rook
White to play and mate in three.
- 1. Kb3 Bh6 2. Rf1+ Bc1 3. Rxc1#
Other defences
- 1. Kb3 Bg5 2. Rf1+ Bc1 3. Rxc1#
- 1. Kb3 Bf4 2. Rxf4 Kb1 3. Rf1#
- 1. Kb3 Be3 2. Rf1+ Bc1 3. Rxc1#
- 1. Kb3 Bd2 2. Rf1+ Be1 3. Rxe1#
- 1. Kb3 Bd2 2. Rf1+ Bc1 3. Rxc1#
- 1. Kb3 Bxb2 2. Rf1+ Bc1 3. Rxc1#
- 1. Kb3 Kb1 2. Rf1 Nb5 3. Qa2#
- 1. Kb3 Kb1 2. Rf1 Nc4 3. Qa2#
- 1. Kb3 Kb1 2. Rf1 Nc2 3. Qa2#
- 1. Kb3 Kb1 2. Rf1 Ka1 3. Rxc1#
Position
- White
- king on a4, queen on a7, rook on f8, pawns on b2 and d4
- Black
- king on a1, bishop on c1, knight on a3