MESON Chess Problem Database
Problem Display
PID: 237941 (bb5K/6nQ/BB5p/P2p1r2/4k3/3R2pp/2P2PP1/8 w - - 0 1)
Koetsheid, Petrus Albertus
Prize, Tidskrift for Schack, 1953
#4
9 + 9
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Keys
- 1.Bc8!
- threat
- 2.Re3+
- 2...Kf4
- 3.Qxh6+
- 3...Kg4
- 4.f3#
- 4.gxh3#
- 3...Rg5
- 4.fxg3#
- 3...Kg4
- 3.Qxh6+
- 2...Kf4
- 2.Re3+
- 1...Kf4
- 2.Qxh6+
- 2...Rg5
- 3.Rd4+
- 3...Ke5
- 4.f4#
- 3...Ke5
- 3.Qf6+
- 3...Ke4
- 4.Re3#
- 4.Rd4#
- 4.Qd4#
- 4.f3#
- 3...Rf5
- 4.Rd4#
- 3...Sf5
- 4.Rd4#
- 3...Ke4
- 3.fxg3+
- 3...Ke4
- 4.Re3#
- 3...Ke5
- 4.Re3#
- 3...Ke4
- 3.Rd4+
- 2...Rg5
- 2.Qxh6+
- 1...Ke5
- 2.Re3+
- 2...Kf4
- 3.Qxh6+
- 3...Kg4
- 4.f3#
- 4.gxh3#
- 3...Rg5
- 4.fxg3#
- 3...Kg4
- 3.Qxh6+
- 2...Kd6
- 3.Qxf5
- threat
- 4.Qd7#
- 3...Kc6
- 4.Qd7#
- 3...Sxf5
- 4.Re6#
- 3...Se6
- 4.Rxe6#
- 4.Qxe6#
- 3...Bc6
- 4.Qf4#
- 4.Qe5#
- 4.Qf8#
- threat
- 3.Qxf5
- 2...Kf4
- 2.Re3+
- 1...gxf2
- 2.Re3+
- 2...Kf4
- 3.Qxh6+
- 3...Kg4
- 4.gxh3#
- 3...Rg5
- 4.g3#
- 3...Kg4
- 3.Qxh6+
- 2...Kf4
- 2.Re3+
- 1...hxg2
- 2.Re3+
- 2...Kf4
- 3.Qxh6+
- 3...Kg4
- 4.f3#
- 3...Rg5
- 4.fxg3#
- 3...Kg4
- 3.Qxh6+
- 2...Kf4
- 2.Re3+
- 1...d4
- 2.Rxd4+
- 2...Ke5
- 3.Qxg7+
- 3...Rf6
- 4.f4#
- 3...Rf6
- 3.Qxg7+
- 2...Ke5
- 2.Rxd4+
- 1...Bf4
- 2.f3+
- 2...Ke5
- 3.Bc7+
- 3...Kf6
- 4.Qxg7#
- 3...Kf6
- 3.Qxg7+
- 3...Kd6
- 4.Qc7#
- 3...Rf6
- 4.Bc7#
- 3...Kd6
- 3.Bc7+
- 2...Ke5
- 2.Bd4
- threat
- 3.f3#
- 2...gxf2
- 3.Bxg7
- threat
- 4.Bxf5#
- 4.Qxf5#
- threat
- 3.Bxg7
- 2...Bc1
- 3.Kxg7
- threat
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Bxg7
- threat
- 4.Rd4#
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Kxg7
- 2...Bd2
- 3.Kxg7
- threat
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Bxg7
- threat
- 4.Rd4#
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Kxg7
- 2...Be3
- 3.Bxg7
- threat
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Bxg7
- 2...Be5
- 3.f3+
- 3...Kf4
- 4.Be3#
- 3...Kf4
- 3.f3+
- 2...Bg5
- 3.Bxg7
- threat
- 4.Rd4#
- 4.Qxf5#
- 3...Kf4
- 4.Rd4#
- 4.Qxf5#
- threat
- 3.Bxg7
- 2...Bd6
- 3.Bxg7
- threat
- 4.Rd4#
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Bxg7
- 2...Bc7
- 3.Bxg7
- threat
- 4.Rd4#
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Bxg7
- 2...Bb8
- 3.Bxg7
- threat
- 4.Rd4#
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Bxg7
- threat
- 2.f3+
- 1...Ba7
- 2.Re3+
- 2...Kf4
- 3.Qxh6+
- 3...Kg4
- 4.Rxg3#
- 4.f3#
- 4.gxh3#
- 3...Rg5
- 4.Bc7#
- 4.fxg3#
- 3...Kg4
- 3.Qxh6+
- 2...Kf4
- 2.f3+
- 2...Kf4
- 3.Qxh6+
- 3...Ke5
- 4.Bc7#
- 4.Re3#
- 3...Rg5
- 4.Bc7#
- 3...Ke5
- 3.Qxh6+
- 2...Ke5
- 3.Bc7+
- 3...Kf6
- 4.Qxg7#
- 3...Kf6
- 3.Bc7+
- 2...Kf4
- 2.Kxg7
- threat
- 3.Qxf5#
- 2...Ke5
- 3.Bc7+
- 3...Ke4
- 4.Bxf5#
- 4.Qxf5#
- 4.f3#
- 3...Ke4
- 3.Re3+
- 3...Kf4
- 4.Qxf5#
- 3...Kd6
- 4.Re6#
- 3...Kf4
- 3.Qxf5+
- 3...Kd6
- 4.Qe6#
- 4.Qf6#
- 3...Kd6
- 3.Bc7+
- threat
- 2.Re3+
- 1...Bc7
- 2.Re3+
- 2...Kf4
- 3.Qxh6+
- 3...Kg4
- 4.f3#
- 4.gxh3#
- 3...Rg5
- 4.Bxc7#
- 4.fxg3#
- 3...Kg4
- 3.Qxh6+
- 2...Kf4
- 2.f3+
- 2...Kf4
- 3.Qxh6+
- 3...Ke5
- 4.Bd4#
- 4.Bxc7#
- 4.Re3#
- 3...Rg5
- 4.Bxc7#
- 3...Ke5
- 3.Qxh6+
- 2...Ke5
- 3.Bxc7+
- 3...Kf6
- 4.Qxg7#
- 3...Kf6
- 3.Qxg7+
- 3...Kf4
- 4.Be3#
- 3...Kd6
- 4.Qxc7#
- 3...Rf6
- 4.Bxc7#
- 3...Kf4
- 3.Bxc7+
- 2...Kf4
- 2.Re3+
- 1...Se6
- 2.Bxe6
- threat
- 3.Qxf5#
- 2...Be5+
- 3.Kg8
- threat
- 4.Qxf5#
- 3...Kf4
- 4.Qxf5#
- threat
- 3.Kg8
- 2...Ke5
- 3.Re3+
- 3...Kf4
- 4.Qxf5#
- 3...Kd6
- 4.Qd7#
- 3...Kf6
- 4.Bd8#
- 4.Qg7#
- 3...Kf4
- 3.Re3+
- threat
- 2.Bxe6
- 1...h2
- 2.Re3+
- 2...Kf4
- 3.Qxh6+
- 3...Kg4
- 4.f3#
- 3...Rg5
- 4.fxg3#
- 3...Kg4
- 3.Qxh6+
- 2...Kf4
- 2.Re3+
- 1...h5
- 2.Re3+
- 2...Kf4
- 3.fxg3+
- 3...Kg4
- 4.Qg6#
- 4.Qxg7#
- 3...Kg5
- 4.Qxg7#
- 3...Kg4
- 3.fxg3+
- 2...Kf4
- 2.Re3+
- threat
- 1.Bc8!
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).