MESON Chess Problem Database
Problem Display
PID: 8474 (1BQ5/N3n2B/rp3p1q/1R1p1p2/2pk4/2n1b1N1/2PP3p/4R2K w - - 0 1)
Keller, Michael
Schweizerische Arbeiter Schachzeitung, 1977
#3
10 + 12
| 4655 | Michael Keller Ein Meister der Schachkomposition | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Qg7
- 2.dxe3#
- 1...Qf8
- 2.dxe3#
- 1...Qh3
- 2.dxe3#
- 1...Qh4
- 2.dxe3#
- 1...Qh5
- 2.dxe3#
- 1...Qg6
- 2.dxe3#
- 1...Qxh7
- 2.dxe3#
- 1...Bg1
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxe7
- threat
- 3.Sxf5#
- 3.Sc6#
- threat
- 2.Sxf5+
- 1...Bxd2
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Sxf5+
- 1...Bf2
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Sxf5+
- 1...Bf4
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Sxf5+
- 1...Bg5
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Sxf5+
- 1...Se4
- 2.Se2#
- 1...Sxb5
- 2.Sxb5#
- 1...Sc6
- 2.Sxc6#
- 1...Sg6
- 2.Sc6#
- 1...Sxc8
- 2.Sc6#
- 1...Sg8
- 2.Sc6#
- 1...Qg7
- Tries
- 1.Sxf5+?
- 1...Sxf5
- 2.Sc6+
- 2...Ke4
- 3.Qxf5#
- 2...Ke4
- 2.Sc6+
- 1...Ke4!
- 1...Sxf5
- 1.Rb3?
- threat
- 2.dxc3#
- 1...Sxc8
- 2.dxc3+
- 2...Kc5
- 3.Rb5#
- 2...Kc5
- 2.dxc3+
- 1...Sc6
- 2.Qxc6
- threat
- 3.dxc3#
- 2...Bxd2
- 3.Sxf5#
- 2...Sb1
- 3.Sb5#
- 2...Sd1
- 3.Sb5#
- 2...Sa2
- 3.Sb5#
- 2...Se2
- 3.Sb5#
- 2...Sa4
- 3.Sb5#
- 2...Se4
- 3.Se2#
- 3.Sxf5#
- 3.Sb5#
- 2...Sb5
- 3.Sxb5#
- threat
- 2.dxc3+
- 2...Kc5
- 3.Rb5#
- 3.Qxc6#
- 2...Kc5
- 2.Qxc6
- 1...Bxd2!
- threat
- 1.Rxd5+?
- 1...Kxd5
- 2.Qd7+
- 2...Kc5
- 3.Qd6#
- 2...Kc5
- 2.Qd7+
- 1...Sexd5!
- 1...Kxd5
- 1.Qxf5?
- threat
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 2...Sexd5
- 3.Sc6#
- 2...Scxd5
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Qxf6
- 2.Qxd5+
- 1...Rxa7
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Qxf6
- 2.Qxf6+
- 1...Bxd2
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Be5+
- 1...Qf4
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 2...Sexd5
- 3.Sc6#
- 2...Scxd5
- 2.Qxf6+
- 2...Qe5
- 3.Bxe5#
- 3.Qxe5#
- 3.dxe3#
- 2...Qxf6
- 3.dxe3#
- 2...Qe5
- 2.Qxd5+
- 1...Qg5
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Qe5
- 3.Bxe5#
- 3.Qxe5#
- 3.dxe3#
- 2...Qxf6
- 2.Qxf6+
- 1...Bg1
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 3.Re4#
- 2...Sexd5
- 3.Sf5#
- 3.Sc6#
- 2...Scxd5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Be5+
- 1...Bf2
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qxf2+
- 2...Qe3
- 3.Qxe3#
- 3.dxe3#
- 2...Qe3
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 3.Re4#
- 2...Sexd5
- 3.Sf5#
- 3.Sc6#
- 2...Scxd5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Be5+
- 1...Bf4
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 3.Re4#
- 2...Sexd5
- 3.Sf5#
- 3.Sc6#
- 2...Scxd5
- 2.Qxd5+
- 1...Bg5
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 3.Re4#
- 2...Sexd5
- 3.Sf5#
- 3.Sc6#
- 2...Scxd5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Be5+
- 1...Sxb5!
- threat
- 1.Qxa6?
- threat
- 2.Qxb6#
- 1...Se4
- 2.Se2#
- 1...Sc8
- 2.Sc6#
- 1...Sa4!
- threat
- 1.Qe6?
- threat
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Qxe3+
- 2...Qxe3
- 3.dxe3#
- 2...Qxe3
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Qxf6
- 2.Qxe7
- threat
- 3.Sxf5#
- 3.Sc6#
- threat
- 2.dxe3+
- 2...Qxe3
- 3.Qxe3#
- 2...Qxe3
- 2.Sxf5+
- 1...Bxd2
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Sxf5+
- 1...Qf4
- 2.Sxf5+
- 2...Qxf5
- 3.Qxe3#
- 3.dxe3#
- 2...Sxf5
- 3.Sc6#
- 2...Qxf5
- 2.Qxe3+
- 2...Qxe3
- 3.dxe3#
- 2...Qxe3
- 2.Qxf6+
- 2...Qe5
- 3.Bxe5#
- 3.Qxe5#
- 3.dxe3#
- 2...Qe5
- 2.dxe3+
- 2...Qxe3
- 3.Qxe3#
- 2...Qxe3
- 2.Sxf5+
- 1...Qg5
- 2.Sxf5+
- 2...Qxf5
- 3.Qxe3#
- 3.dxe3#
- 2...Sxf5
- 3.Sc6#
- 2...Qxf5
- 2.Qxe3+
- 2...Qxe3
- 3.dxe3#
- 2...Qxe3
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Qxf6
- 2.dxe3+
- 2...Qxe3
- 3.Qxe3#
- 2...Qxe3
- 2.Sxf5+
- 1...Bg1
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Qxe7
- threat
- 3.Sxf5#
- 3.Sc6#
- threat
- 2.Sxf5+
- 1...Bf2
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Qxe7
- threat
- 3.Sxf5#
- 3.Sc6#
- threat
- 2.Sxf5+
- 1...Bf4
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Qxe7
- threat
- 3.Sxf5#
- 3.Sc6#
- threat
- 2.Sxf5+
- 1...Bg5
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Be5+
- 2...fxe5
- 3.Qxe5#
- 2...fxe5
- 2.Qe5+
- 2...fxe5
- 3.Bxe5#
- 2...fxe5
- 2.Qxe7
- threat
- 3.Sxf5#
- 3.Sc6#
- threat
- 2.Sxf5+
- 1...f4
- 2.Sf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sf5#
- 2...Sxc6
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 2...Sexd5
- 3.Sc6#
- 2...Scxd5
- 2.Qxe7
- threat
- 3.Sf5#
- 3.Sc6#
- 2...f5
- 3.Sxf5#
- 3.Be5#
- 3.Qe5#
- threat
- 2.Sf5+
- 1...Sxb5!
- threat
- 1.d3?
- threat
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...Qxh7
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Qxc4#
- 2...Kxd5
- 2.Rxd5+
- 1...Rxa7
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Rxd5+
- 1...Qg5
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Qxc4#
- 2...Kxd5
- 2.Rxd5+
- 1...Qh3
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Qxc4#
- 2...Kxd5
- 2.Rxd5+
- 1...Qh4
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Sxf5+
- 1...Qh5
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Qxc4#
- 2...Kxd5
- 2.Rxd5+
- 1...Qg6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Qxc4#
- 2...Kxd5
- 2.Rxd5+
- 1...Ra4
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Sxf5+
- 1...Ra5
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Rxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...Bc1
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...Bg1
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...Bd2
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...Bf2
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...Bf4
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...Bg5
- 2.Sxf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sxf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sxf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sxf5+
- 1...f4
- 2.Sf5+
- 2...Sxf5
- 3.Sc6#
- 2...Sxf5
- 2.Sc6+
- 2...Sxc6
- 3.Sf5#
- 2...Sxc6
- 2.Rxd5+
- 2...Kxd5
- 3.Qxc4#
- 2...Scxd5
- 3.Se2#
- 3.Sb5#
- 3.Qxc4#
- 2...Sexd5
- 3.Sf5#
- 3.Qxc4#
- 2...Kxd5
- 2.Sf5+
- 1...Qf4!
- threat
- 1.Sxf5+?
- Keys
- 1.Qc6!
- threat
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Qxf6
- 2.Qxf6+
- 1...Bxd2
- 2.Rxd5+
- 2...Scxd5
- 3.Sb5#
- 2...Sexd5
- 3.Sxf5#
- 2...Scxd5
- 2.Rxd5+
- 1...Qf4
- 2.Qxf6+
- 2...Qe5
- 3.Bxe5#
- 3.Qxe5#
- 3.dxe3#
- 2...Qe5
- 2.Qxf6+
- 1...Qg5
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Qxf6
- 2.Qxf6+
- 1...Bg1
- 2.Rxd5+
- 2...Scxd5
- 3.Sb5#
- 2...Sexd5
- 3.Sxf5#
- 2...Scxd5
- 2.Rxd5+
- 1...Bf2
- 2.Rxd5+
- 2...Scxd5
- 3.Sb5#
- 2...Sexd5
- 3.Sxf5#
- 2...Scxd5
- 2.Rxd5+
- 1...Bf4
- 2.Rxd5+
- 2...Scxd5
- 3.Sb5#
- 2...Sexd5
- 3.Sxf5#
- 2...Scxd5
- 2.Rxd5+
- 1...Bg5
- 2.Rxd5+
- 2...Scxd5
- 3.Sb5#
- 2...Sexd5
- 3.Sxf5#
- 2...Scxd5
- 2.Rxd5+
- 1...Sb1
- 2.Rxd5+
- 2...Sxd5
- 3.Sb5#
- 2...Sxd5
- 2.Qxd5+
- 2...Sxd5
- 3.Sc6#
- 2...Sxd5
- 2.Rxd5+
- 1...Sd1
- 2.Rxd5+
- 2...Sxd5
- 3.Sb5#
- 2...Sxd5
- 2.Qxd5+
- 2...Sxd5
- 3.Sc6#
- 2...Sxd5
- 2.Rxd5+
- 1...Sa2
- 2.Rxd5+
- 2...Sxd5
- 3.Sb5#
- 2...Sxd5
- 2.Qxd5+
- 2...Sxd5
- 3.Sc6#
- 2...Sxd5
- 2.Rxd5+
- 1...Se2
- 2.Rxd5+
- 2...Sxd5
- 3.Sb5#
- 2...Sxd5
- 2.Qxd5+
- 2...Sxd5
- 3.Sc6#
- 2...Sxd5
- 2.Rxd5+
- 1...Sa4
- 2.Rxd5+
- 2...Sxd5
- 3.Sb5#
- 2...Sxd5
- 2.Qxd5+
- 2...Sxd5
- 3.Sc6#
- 2...Sxd5
- 2.Rxd5+
- 1...Sg6
- 2.Rb3
- threat
- 3.dxc3#
- 2...Bxd2
- 3.Sxf5#
- 2...Sb1
- 3.Sb5#
- 2...Sd1
- 3.Sb5#
- 2...Sa2
- 3.Sb5#
- 2...Se2
- 3.Sb5#
- 2...Sa4
- 3.Sb5#
- 2...Se4
- 3.Se2#
- 3.Sxf5#
- 3.Sb5#
- 2...Sb5
- 3.Sxb5#
- threat
- 2.Rxd5+
- 2...Sxd5
- 3.Sb5#
- 2...Sxd5
- 2.Qxd5+
- 2...Sxd5
- 3.Sc6#
- 2...Sxd5
- 2.Qxf6+
- 2...Se5
- 3.Sc6#
- 3.Bxe5#
- 3.Qxe5#
- 2...Se5
- 2.Rb3
- 1...Sg8
- 2.Rb3
- threat
- 3.dxc3#
- 2...Bxd2
- 3.Sxf5#
- 2...Sb1
- 3.Sb5#
- 2...Sd1
- 3.Sb5#
- 2...Sa2
- 3.Sb5#
- 2...Se2
- 3.Sb5#
- 2...Sa4
- 3.Sb5#
- 2...Se4
- 3.Se2#
- 3.Sxf5#
- 3.Sb5#
- 2...Sb5
- 3.Sxb5#
- threat
- 2.Rxd5+
- 2...Sxd5
- 3.Sb5#
- 2...Sxd5
- 2.Qxd5+
- 2...Sxd5
- 3.Sc6#
- 2...Sxd5
- 2.Qxf6+
- 2...Qxf6
- 3.dxe3#
- 2...Sxf6
- 3.Sc6#
- 2...Qxf6
- 2.Rb3
- 1...f4
- 2.Qxd5+
- 2...Scxd5
- 3.Se2#
- 2...Sexd5
- 3.Sc6#
- 2...Scxd5
- 2.Qxd5+
- threat
- 1.Qc6!
FEATURES
NOT CLASSIFIED
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).