MESON Chess Problem Database
Problem Display
PID: 123251 (B2K4/p2Pp3/PkPpR3/pNN4p/Pb1BP3/3P4/1R6/7q w - - 0 1)
Cheylan, Yves
3rd HM., Hermanson JT, 1987
#2
13 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Be1
- 2.Sc3#
- 1...Bd2
- 2.Sc3#
- 1...Ba3
- 2.Sxa3#
- 1...Bc3
- 2.Sxc3#
- 1...Bxc5
- 2.Sc7#
- 1...dxc5
- 2.c7#
- 1...d5
- 2.c7#
- 1...Be1
- Tries
- 1.Ke8?
- threat
- 2.d8Q#
- 2.d8B#
- 1...Qxe4
- 2.d8Q#
- 2.d8B#
- 1...dxc5
- 2.c7#
- 1...Qg2
- 2.d8Q#
- 2.d8B#
- 1...Qf3
- 2.d8Q#
- 2.d8B#
- 1...Qa1
- 2.d8Q#
- 2.d8B#
- 1...Qb1
- 2.d8Q#
- 2.d8B#
- 1...Qc1
- 2.d8Q#
- 2.d8B#
- 1...Qd1
- 2.d8Q#
- 2.d8B#
- 1...Qe1
- 2.d8Q#
- 2.d8B#
- 1...Qf1
- 2.d8Q#
- 2.d8B#
- 1...Qg1
- 2.d8Q#
- 2.d8B#
- 1...Qh2
- 2.d8Q#
- 2.d8B#
- 1...Qh3
- 2.d8Q#
- 2.d8B#
- 1...Qh4
- 2.d8Q#
- 2.d8B#
- 1...Be1
- 2.d8Q#
- 2.d8B#
- 1...Bd2
- 2.d8Q#
- 2.d8B#
- 1...Ba3
- 2.d8Q#
- 2.d8B#
- 1...Bc3
- 2.d8Q#
- 2.d8B#
- 1...h4
- 2.d8Q#
- 2.d8B#
- 1...d5
- 2.c7#
- 2.d8Q#
- 2.d8B#
- 1...Bxc5!
- threat
- 1.Sa3?
- threat
- 2.Sc4#
- 1...dxc5
- 2.c7#
- 1...d5
- 2.c7#
- 1...Qc1!
- threat
- 1.Sc3?
- threat
- 2.Sd5#
- 1...dxc5
- 2.c7#
- 1...d5
- 2.Sxd5#
- 2.c7#
- 1...Qxe4!
- threat
- 1.Sxd6?
- threat
- 2.Sc4#
- 2.Sc8#
- 1...Qc1
- 2.Sc8#
- 1...exd6!
- threat
- 1.Sc7?
- threat
- 2.Sd5#
- 1...Qxe4
- 2.Sxe4#
- 1...d5
- 2.Sb7#
- 2.Sxd5#
- 1...dxc5!
- threat
- 1.Sb3+?
- 1...Kxa6
- 2.Sc7#
- 2.Bb7#
- 1...Bc5!
- 1...Kxa6
- 1.Sb7+?
- 1...Kxa6
- 2.Sc7#
- 1...Kxc6
- 2.Sxa7#
- 2.Sxa5#
- 2.S7xd6#
- 1...Bc5!
- 1...Kxa6
- 1.Ke8?
- Keys
- 1.Kc8!
- threat
- 2.d8Q#
- 2.d8B#
- 1...Qxe4
- 2.d8Q#
- 2.d8B#
- 1...Bxc5
- 2.Sc7#
- 1...dxc5
- 2.c7#
- 1...Qg2
- 2.d8Q#
- 2.d8B#
- 1...Qf3
- 2.d8Q#
- 2.d8B#
- 1...Qa1
- 2.d8Q#
- 2.d8B#
- 1...Qb1
- 2.d8Q#
- 2.d8B#
- 1...Qc1
- 2.d8Q#
- 2.d8B#
- 1...Qd1
- 2.d8Q#
- 2.d8B#
- 1...Qe1
- 2.d8Q#
- 2.d8B#
- 1...Qf1
- 2.d8Q#
- 2.d8B#
- 1...Qg1
- 2.d8Q#
- 2.d8B#
- 1...Qh2
- 2.d8Q#
- 2.d8B#
- 1...Qh3
- 2.d8Q#
- 2.d8B#
- 1...Qh4
- 2.d8Q#
- 2.d8B#
- 1...Be1
- 2.Sc3#
- 2.d8Q#
- 2.d8B#
- 1...Bd2
- 2.Sc3#
- 2.d8Q#
- 2.d8B#
- 1...Ba3
- 2.Sxa3#
- 2.d8Q#
- 2.d8B#
- 1...Bc3
- 2.Sxc3#
- 2.d8Q#
- 2.d8B#
- 1...h4
- 2.d8Q#
- 2.d8B#
- 1...d5
- 2.c7#
- 2.d8Q#
- 2.d8B#
- threat
- 1.Kc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 5
- Sets
- B(b);::R(A)+S(F)
- B(b);::R(A)+S(F),XB(b)
- B(b);P_SPINB(b),XS(G)::R(A)+S(F)
- P(f);P_SPINP(f),XS(G)::R(J)+P(I)
- P(f);::R(J)+P(I)
- Tries
- Try
- K(M);P-FLIGHT
- Threat
- P=Q
- Vars
- Q(a);XP(E)::P=Q
- P(f);P_SPINP(f),XS(G)::R(J)+P(I)
- Q(a);::P=Q
- B(b);::P=Q
- P(d);::P=Q
- Refutation
- B(b);P_SPINB(b),XS(G)
- Try
- S(F);P_PINB(b)
- Threat
- S(F)
- Vars
- P(f);P_SPINP(f),XS(G)::R(J)+P(I)
- P(f);::R(J)+P(I)
- Refutation
- Q(a);
- Try
- S(F);P_PINB(b)
- Threat
- S(F)
- Vars
- P(f);P_SPINP(f),XS(G)::R(J)+P(I)
- Refutation
- Q(a);XP(E)
- Try
- S(F);P_PINB(b),XP(f)
- Threat
- DUALS(2)
- Vars
- Q(a);::S(F)
- Refutation
- P(h);XS(F)
- Try
- S(F);P_PINB(b)
- Threat
- S(F)
- Vars
- Q(a);XP(E)::B(D)+S(G),XQ(a)
- Refutation
- P(f);P_SPINP(f),XS(G)
- Try
- S(G);CHECK
- Refutation
- B(b);P_SPINB(b)
- Try
- S(G);CHECK
- Vars
- K(e);P-FLIGHT,XP(H)::S(F)
- Refutation
- B(b);P_SPINB(b)
- Try
- Actual
- K(M);P-FLIGHT
- Threat
- P=Q
- Vars
- Q(a);XP(E)::P=Q
- B(b);P_SPINB(b),XS(G)::R(A)+S(F)
- P(f);P_SPINP(f),XS(G)::R(J)+P(I)
- Q(a);::P=Q
- P(d);::P=Q
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).