MESON Chess Problem Database
Problem Display
PID: 10695 (6n1/1p4QP/BR6/3kB1p1/1pRNN1r1/1pp2p1q/3npr1b/4Kb2 w - - 0 1)
Davidovski, Ivan Nikolaevich
4th Place, 2. International Team (Friendship) Match, 1967-1970
#2
9 + 15
| 273 | Mat Plus | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Rxe4
- 2.Rd6#
- 1...Bxe5
- 2.Qxb7#
- 1...Sxc4
- 2.Bxb7#
- 1...Sxe4
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxe4
- Tries
- 1.Sc2?
- threat
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qxh7
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Rxe4
- 2.Sxb4#
- 2.Rd6#
- 1...Sxc4
- 2.Bxb7#
- 1...Qg2
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg3
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh4
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh5
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Qh6
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 1...Rfg2
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg1
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Rgg2
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Rg3
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Rf4
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Rh4
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Bg2
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg1
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg3
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bf4
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sb1
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sh6
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...Se7
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 1...b2
- 2.Se3#
- 2.Sxb4#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sf6!
- threat
- 1.Sxb3?
- threat
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qxh7
- 2.Rd4#
- 2.Rd6#
- 1...Rxe4
- 2.Rc5#
- 2.Rd6#
- 1...Sxb3
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sxc4
- 2.Bxb7#
- 1...Sxe4
- 2.Rd4#
- 2.hxg8Q#
- 2.hxg8B#
- 1...bxa6
- 2.Rd4#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg2
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg3
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh4
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh5
- 2.Rd4#
- 2.Rd6#
- 1...Qh6
- 2.Rd4#
- 1...Rfg2
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg1
- 2.Rd4#
- 2.Rd6#
- 1...Rgg2
- 2.Rd4#
- 2.Rd6#
- 1...Rg3
- 2.Rd4#
- 2.Rd6#
- 1...Rf4
- 2.Rd4#
- 2.Rd6#
- 1...Rh4
- 2.Rd4#
- 2.Rd6#
- 1...Bg2
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg1
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg3
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bf4
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sb1
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sh6
- 2.Rd4#
- 2.Rd6#
- 1...Se7
- 2.Rd4#
- 2.Rd6#
- 1...c2
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sf6!
- threat
- 1.Sxf3?
- threat
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qxf3
- 2.Rd4#
- 2.Rd6#
- 1...Qxh7
- 2.Rd4#
- 2.Rd6#
- 1...Rxf3
- 2.Rd4#
- 2.Rd6#
- 1...Rxe4
- 2.Rd6#
- 2.Qxb7#
- 1...Bxe5
- 2.Qxe5#
- 2.Qxb7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sxc4
- 2.Bxb7#
- 2.Qxb7#
- 1...Sxe4
- 2.Qxb7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...bxa6
- 2.Rd4#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg2
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg3
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh4
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh5
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 1...Qh6
- 2.Rd4#
- 1...Rfg2
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg1
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 1...Rgg2
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 1...Rg3
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 1...Rf4
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 1...Rh4
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 1...Bg2
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg1
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg3
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bf4
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sb1
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sf6
- 2.Sxf6#
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qf7#
- 1...Sh6
- 2.Sf6#
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 1...Se7
- 2.Sf6#
- 2.Rd4#
- 2.Rd6#
- 2.Qf7#
- 1...b2
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...c2
- 2.Rd4#
- 2.Rd6#
- 2.Qxb7#
- 2.Qd7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sxf3+!
- threat
- 1.Sf5?
- threat
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qxh7
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 1...Sxc4
- 2.Bxb7#
- 1...bxa6
- 2.Se3#
- 2.Rd4#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg2
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg3
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh4
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh5
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 1...Qh6
- 2.Se3#
- 2.Rd4#
- 1...Rfg2
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg1
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rgg2
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg3
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rf4
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rh4
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg2
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg1
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg3
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bf4
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sb1
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sh6
- 2.Se3#
- 2.Se7#
- 2.Rd4#
- 2.Rd6#
- 1...Se7
- 2.Se3#
- 2.Sxe7#
- 2.Rd4#
- 2.Rd6#
- 1...b2
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...c2
- 2.Se3#
- 2.Rd4#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sf6!
- threat
- 1.Se6?
- threat
- 2.Sc7#
- 2.Rd4#
- 2.Rd6#
- 1...Rxe4
- 2.Sc7#
- 2.Rc5#
- 2.Rd6#
- 1...Bxe5
- 2.Qxb7#
- 1...Sxc4
- 2.Bxb7#
- 1...Sxe4
- 2.Sc7#
- 2.Rd4#
- 1...bxa6
- 2.Rd4#
- 1...Sf6!
- threat
- 1.Sxd2?
- threat
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qxh7
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Rxd4
- 2.Bxb7#
- 2.Rd6#
- 1...Sf6
- 2.Rb5#
- 1...Qg2
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg3
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh4
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh5
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Qh6
- 2.Rb5#
- 1...Rfg2
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg1
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Rgg2
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Rg3
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Re4
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Rf4
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Rh4
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Bg2
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg1
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg3
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bf4
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sh6
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 1...Se7
- 2.Rb5#
- 2.Rd6#
- 1...b2
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...c2
- 2.Bxb7#
- 2.Rb5#
- 2.Rd6#
- 2.hxg8Q#
- 2.hxg8B#
- 1...cxd2+!
- threat
- 1.Sd6?
- threat
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qxh7
- 2.Bxb7#
- 2.Rb5#
- 1...Bxe5
- 2.Bxb7#
- 2.Qxb7#
- 2.Qf7#
- 2.Qxg8#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sxc4
- 2.Rb5#
- 1...Sf6
- 2.Rb5#
- 1...Qg2
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qg3
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh4
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Qh5
- 2.Bxb7#
- 2.Rb5#
- 1...Qh6
- 2.Bxb7#
- 2.Rb5#
- 1...Rfg2
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rg1
- 2.Bxb7#
- 2.Rb5#
- 1...Rgg2
- 2.Bxb7#
- 2.Rb5#
- 1...Rg3
- 2.Bxb7#
- 2.Rb5#
- 1...Re4
- 2.Bxb7#
- 2.Rb5#
- 1...Rf4
- 2.Bxb7#
- 2.Rb5#
- 1...Rh4
- 2.Bxb7#
- 2.Rb5#
- 1...Bg2
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg1
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bg3
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bf4
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sb1
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Se4
- 2.Bxb7#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sh6
- 2.Bxb7#
- 2.Rb5#
- 1...Se7
- 2.Rb5#
- 1...b2
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...c2
- 2.Bxb7#
- 2.Rb5#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Rxd4!
- threat
- 1.Sf6+?
- 1...Kxe5
- 2.Qc7#
- 1...Sxf6!
- 1...Kxe5
- 1.Rb5+?
- 1...Kxc4
- 2.Rc5#
- 1...Kxe4!
- 1...Kxc4
- 1.Qd7+?
- 1...Kxe5
- 2.Qf5#
- 1...Kxe4!
- 1...Kxe5
- 1.Qf7+?
- 1...Kxe5
- 2.Qf5#
- 1...Kxe4!
- 1...Kxe5
- 1.Sc2?
- Keys
- 1.Qg6!
- threat
- 2.Rc5#
- 1...Kxe5
- 2.Qf5#
- 1...Rxe4
- 2.Qd6#
- 1...Bxe5
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sxc4
- 2.Rb5#
- 1...Sxe4
- 2.Qe6#
- threat
- 1.Qg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(k);SBLOCK,XS(D)::R1(G)
- B(e);SBLOCK,XB(E)::QAB(H),XP(n)
- S(b);SBLOCK,XR(B)::B(F),XP(n)
- S(b);SBLOCK,XS(D)::PXS(o)=Q
- Tries
- Try
- S(C);
- Threat
- DUALS(6)
- Vars
- S(b);SBLOCK,XR(B)::B(F),XP(n)
- Refutation
- S(o);
- Try
- S(C);XP(f)
- Threat
- DUALS(4)
- Vars
- S(b);SBLOCK,XR(B)::B(F),XP(n)
- Q(i);::R1(B)
- Refutation
- S(o);
- Try
- S(C);XP(h)
- Threat
- DUALS(8)
- Vars
- Q(i);::R1(B)
- Refutation
- S(b);CHECK,XS(C)
- Try
- S(C);
- Threat
- DUALS(5)
- Vars
- S(b);SBLOCK,XR(B)::B(F),XP(n)
- Refutation
- S(o);
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- B(e);SBLOCK,XB(E)::QAB(H),XP(n)
- S(b);SBLOCK,XR(B)::B(F),XP(n)
- P(n);XB(F)::R1(B)
- Refutation
- S(o);
- Try
- S(D);XS(b)
- Threat
- DUALS(5)
- Vars
- S(o);::R(G)
- Q(i);::R(G)
- Refutation
- P(g);CHECK,XS(D)
- Try
- S(D);
- Threat
- DUALS(4)
- Vars
- S(b);XR(B)::R(G)
- S(o);::R(G)
- Refutation
- R(k);XS(C)
- Try
- S(D);CHECK
- Vars
- K(l);P-FLIGHT,XB(E)::QAB(H)
- Refutation
- S(o);XS(D)
- Try
- R(G);CHECK
- Vars
- K(l);S_FLIGHT,XR(B)::B(F)+R(G),DCHECK
- Refutation
- K(l);S_FLIGHT,XS(D)
- Try
- Q(H);CHECK
- Vars
- K(l);OGATEB,P-FLIGHT,XB(E)::QAR1(H)
- Refutation
- K(l);S_FLIGHT,XS(D)
- Try
- Q(H);CHECK
- Vars
- K(l);OGATEB,P-FLIGHT,XB(E)::QAR1(H)
- Refutation
- K(l);S_FLIGHT,XS(D)
- Try
- Actual
- Q(H);
- Threat
- R1(B)
- Vars
- K(l);OGATEB,P-FLIGHT,XB(E)::QAR1(H)
- R(k);SBLOCK,XS(D)::QAR1(H)
- B(e);SBLOCK,XB(E)::PXS(o)=Q
- S(b);SBLOCK,XR(B)::R(G)
- S(b);SBLOCK,XS(D)::QAB1(H)
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).