MESON Chess Problem Database
Problem Display
PID: 41512 (8/8/2Q5/P4p2/1pPB1P2/1P2P1K1/ppN4p/1kN4R w - - 0 1)
Pauly, Wolfgang
The Theory of Pawn Promotion, 1912
#3
11 + 6
| 4872 | Themes-64 | 1956 |
| 4198 | Wolfgang Pauly Challenge of a Legacy | 2001 |
SOLUTION
- SOUND
- Sets
- 1...Kxc2
- 2.Qg2+
- 2...Kb1
- 3.Sd3#
- 3.Qxb2#
- 2...Kb1
- 2.Qg2+
- 1...Kxc2
- Tries
- 1.Sxa2+?
- 1...Kxa2
- 2.Qa4#
- 1...Kxc2!
- 1...Kxa2
- 1.Sa3+?
- 1...Ka1
- 2.Se2#
- 2.Sd3#
- 1...bxa3!
- 1...Ka1
- 1.Qe4?
- threat
- 2.Se2#
- 1...bxc1Q
- 2.Sa3#
- 1...bxc1S
- 2.Sa3#
- 1...bxc1B
- 2.Sa3#
- 1...bxc1R
- 2.Sa3#
- 1...a1Q
- 2.Sa3#
- 1...a1S
- 2.Sa3#
- 1...a1B
- 2.Sa3#
- 1...a1R
- 2.Sa3#
- 1...fxe4!
- threat
- 1.Qb5?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qxf5+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Qd5?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qg2+
- 2...Kb1
- 3.Sd3#
- 3.Qxb2#
- 2...Kb1
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qg2+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Qd7?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qxf5+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Qc5?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qxf5+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Qe6?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qxf5+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Qf6?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qxf5+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Qg6?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qxf5+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Qc8?
- threat
- 2.Sxb4
- threat
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...Ka1
- 3.Scxa2#
- 3.Se2#
- 3.Scd3#
- 2...bxc1Q
- 3.Qxf5#
- 2...bxc1S
- 3.Qxf5#
- 2...bxc1B
- 3.Qxf5#
- 2...bxc1R
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Se2#
- 2...bxc1Q
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1S
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1B
- 3.Sa1#
- 3.Se1#
- 3.Sa3#
- 3.Sxb4#
- 2...bxc1R
- 3.Sa1#
- 3.Sa3#
- 3.Sxb4#
- 2...a1Q
- 3.Sa3#
- 3.Sxb4#
- 2...a1S
- 3.Sa3#
- 2...a1B
- 3.Sa3#
- 3.Sxb4#
- 2...a1R
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sxb4
- 1...Kxc2
- 2.Qxf5+
- 2...Kd2
- 3.Qd3#
- 2...Kd2
- 2.Qxf5+
- 1...bxc1Q
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1S
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...bxc1R
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sa3+
- 1...a1Q
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1B
- 2.Sa3+
- 2...bxa3
- 3.Qxf5#
- 2...bxa3
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Qxf5
- threat
- 3.Sa3#
- 3.Sxb4#
- threat
- 2.Sa3+
- 1...a1R
- 2.Sxb4
- threat
- 3.Sca2#
- 3.Se2#
- 3.Scd3#
- 3.Qxf5#
- threat
- 2.Sxb4
- 1...a1S!
- threat
- 1.Sxa2+?
- Keys
- 1.Sa1!
- threat
- 2.Se2#
- 2.Sd3#
- 1...bxa1Q
- 2.Qg2
- threat
- 3.Sxa2#
- 3.Sd3#
- 2...Qb2
- 3.Qxb2#
- 2...Qc3
- 3.Qxa2#
- threat
- 2.Qg2
- 1...bxa1S
- 2.Qa4
- threat
- 3.Qxa2#
- 2...Kc2
- 3.Qxa2#
- threat
- 2.Qa4
- 1...bxa1B
- 2.Qg2
- threat
- 3.Sxa2#
- 3.Sd3#
- 3.Qxa2#
- 2...Bb2
- 3.Qxb2#
- threat
- 2.Qg2
- 1...bxa1R
- 2.Rxh2
- 2...Kxc1
- 3.Qh1#
- 2...Kxc1
- 2.Rxh2
- 1...bxc1Q
- 2.Kxh2
- 2...Qg1+
- 3.Rxg1#
- 2...Qxh1+
- 3.Qxh1#
- 2...Qd1
- 3.Rxd1#
- 2...Qe1
- 3.Rxe1#
- 2...Qf1
- 3.Rxf1#
- 2...Qg1+
- 2.Kxh2
- 1...bxc1S
- 2.e4
- 2...fxe4
- 3.Qxe4#
- 2...fxe4
- 2.e4
- 1...bxc1B
- 2.e4
- 2...fxe4
- 3.Qxe4#
- 2...fxe4
- 2.e4
- 1...bxc1R
- 2.Kxh2
- 2...Rxh1+
- 3.Qxh1#
- 2...Rd1
- 3.Rxd1#
- 2...Re1
- 3.Rxe1#
- 2...Rf1
- 3.Rxf1#
- 2...Rg1
- 3.Rxg1#
- 2...Rxh1+
- 2.Kxh2
- threat
- 1.Sa1!
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).