Mate in 3 · No. 503 · HarderTwo rooks, bishop and knight
White to play and mate in three.
- 1. Rxb5 Kb8 2. Rdxb6+ Ka8 3. Ra6#
Other defences
- 1. Rxb5 Kb8 2. Rdxb6+ Ka7 3. Rxa5#
- 1. Rxb5 Ka8 2. Rdxb6 Ka7 3. Rxa5#
- 1. Rxb5 Ka8 2. Rdxb6 cxd3 3. Ra6#
- 1. Rxb5 Ka8 2. Rdxb6 bxa3 3. Ra6#
- 1. Rxb5 Ka8 2. Rdxb6 c3 3. Ra6#
- 1. Rxb5 Ka8 2. Rdxb6 b3 3. Ra6#
- 1. Rxb5 Kb7 2. Rdxb6+ Ka8 3. Ra6#
- 1. Rxb5 Kb7 2. Rdxb6+ Ka7 3. Rxa5#
- 1. Rxb5 Ka6 2. Rdxb6+ Ka7 3. Rxa5#
- 1. Rxb5 cxd3 2. Rdxb6 Ka8 3. Ra6#
- 1. Rxb5 cxd3 2. Rdxb6 bxa3 3. Rxa5#
- 1. Rxb5 cxd3 2. Rdxb6 b3 3. Rxa5#
- 1. Rxb5 cxd3 2. Rdxb6 d2 3. Rxa5#
- 1. Rxb5 bxa3 2. Rdxb6 Ka8 3. Ra6#
- 1. Rxb5 bxa3 2. Rdxb6 cxd3 3. Rxa5#
- 1. Rxb5 bxa3 2. Rdxb6 c3 3. Rxa5#
- 1. Rxb5 c3 2. Rdxb6 Ka8 3. Ra6#
- 1. Rxb5 c3 2. Rdxb6 bxa3 3. Rxa5#
- 1. Rxb5 c3 2. Rdxb6 b3 3. Rxa5#
- 1. Rxb5 c3 2. Rdxb6 c2 3. Rxa5#
- 1. Rxb5 b3 2. Rdxb6 Ka8 3. Ra6#
- 1. Rxb5 b3 2. Rdxb6 cxd3 3. Rxa5#
- 1. Rxb5 b3 2. Rdxb6 bxa2 3. Rxa5#
- 1. Rxb5 b3 2. Rdxb6 c3 3. Rxa5#
- 1. Rxb5 b3 2. Rdxb6 b2 3. Rxa5#
Position
- White
- king on d8, rooks on d6 and f5, bishop on h4, knight on a4, pawns on a2, a3, d3, e3 and h3
- Black
- king on a7, rook on b5, pawns on a5, b4, b6 and c4