MESON Chess Problem Database
Problem Display
PID: 235161 (6BK/n2pkP1p/1B1N1r1Q/b1RP1rP1/2nP4/8/8/8 w - - 0 1)
Cheylan, Yves
5th HM., Probleemblad, 1985
#2
10 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kxd6
- 2.Qf8#
- 2.f8Q#
- 2.f8B#
- 1...Re6
- 2.Sxf5#
- 1...Rg6
- 2.Sxf5#
- 1...Sb5
- 2.Sc8#
- 1...Sc6
- 2.Sc8#
- 1...Sc8
- 2.Sxc8#
- 1...Kxd6
- Tries
- 1.Bd8+?
- 1...Kxd6
- 2.Qf8#
- 2.f8Q#
- 2.f8B#
- 1...Kxd8
- 2.Qf8#
- 1...Bxd8!
- 1...Kxd6
- 1.Qg7?
- threat
- 2.f8Q#
- 2.f8B#
- 1...Kxd6
- 2.Qf8#
- 1...Rxd5
- 2.f8Q#
- 2.f8B#
- 1...Rxg5
- 2.f8Q#
- 2.f8B#
- 1...Rf1
- 2.f8Q#
- 2.f8B#
- 1...Rf2
- 2.f8Q#
- 2.f8B#
- 1...Rf3
- 2.f8Q#
- 2.f8B#
- 1...Rf4
- 2.f8Q#
- 2.f8B#
- 1...Re5
- 2.f8Q#
- 2.f8B#
- 1...Re6
- 2.Sxf5#
- 2.f8Q#
- 2.f8B#
- 1...Rg6
- 2.Sxf5#
- 2.f8Q#
- 2.f8B#
- 1...Rh6
- 2.Sxf5#
- 2.f8Q#
- 2.f8B#
- 1...Be1
- 2.f8Q#
- 2.f8B#
- 1...Bd2
- 2.f8Q#
- 2.f8B#
- 1...Bc3
- 2.f8Q#
- 2.f8B#
- 1...Bb4
- 2.f8Q#
- 2.f8B#
- 1...Sb2
- 2.f8Q#
- 2.f8B#
- 1...Sd2
- 2.f8Q#
- 2.f8B#
- 1...Sa3
- 2.f8Q#
- 2.f8B#
- 1...Se3
- 2.f8Q#
- 2.f8B#
- 1...Se5
- 2.f8Q#
- 2.f8B#
- 1...Sb5
- 2.Sc8#
- 2.f8Q#
- 2.f8B#
- 1...Sc6
- 2.Sc8#
- 2.f8Q#
- 2.f8B#
- 1...Sc8
- 2.Sxc8#
- 2.f8Q#
- 2.f8B#
- 1...h5
- 2.f8Q#
- 2.f8B#
- 1...h6
- 2.f8Q#
- 2.f8B#
- 1...Rxf7!
- threat
- 1.Qxf6+?
- 1...Kf8
- 2.Qd8#
- 1...Rxf6!
- 1...Kf8
- 1.gxf6+?
- 1...Kxd6
- 2.Qf8#
- 2.f8Q#
- 2.f8B#
- 1...Rxf6!
- 1...Kxd6
- 1.Bd8+?
- Keys
- 1.Rc8!
- threat
- 2.Qf8#
- 1...Kxd6
- 2.f8Q#
- 2.f8B#
- 1...Rxd5
- 2.Qxf6#
- 1...Rxh6
- 2.Sxf5#
- 1...Rxf7
- 2.Re8#
- 1...Sxc8
- 2.Sxc8#
- threat
- 1.Rc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- R(d);N_GUARD::S(F),XR(c)
- S(e);N_GUARD::S(F)
- S(e);N_GUARD::S(F),XS(e)
- Tries
- Try
- B(E);CHECK
- Vars
- K(g);S_FLIGHT,XB(E)::QAR2(G)
- Refutation
- B(b);XB(E)
- Try
- Q(G);
- Threat
- P=Q
- Vars
- K(g);S_FLIGHT,XS(F)::QAB(G)
- R(c);XP(C)::P=Q
- R(c);XP(D)::P=Q
- R(c);::P=Q
- B(b);::P=Q
- S(a);::P=Q
- P(h);::P=Q
- Refutation
- R(d);P_SPINR(d),XP(H)
- Try
- Q(G);CHECK,XR(d)
- Vars
- K(g);OGATE,S_FLIGHT::QAR2(G)
- Refutation
- R(c);XQ(G)
- Try
- P(D);CHECK,XR(d)
- Refutation
- R(c);XP(D)
- Try
- Actual
- R(B);
- Threat
- QAB1(G)
- Vars
- K(g);P_SPINR(d),S_FLIGHT,XS(F)::P=Q
- R(c);N_GUARD,XP(C)::QAB1(G),XR(d)
- R(d);N_GUARD,XQ(G)::S(F),XR(c)
- R(d);XP(H)::R1(B)
- S(e);XR(B)::S(F),XS(e)
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).