MESON Chess Problem Database
Problem Display
PID: 251011 (K7/7Q/5p2/1NpPPPb1/2PPkpN1/3p1RPB/3p2P1/3n4 w - - 0 1)
Doukhan, Gerard
Probleemblad, 1981
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.f6#
- 1...Bh4
- Tries
- 1.Ka7?
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.f6#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...cxd4
- 1.Kb7?
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.f6#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...cxd4
- 1.Kb8?
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.f6#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...cxd4
- 1.Re3+?
- 1...Sxe3
- 2.Sf2#
- 1...fxe3!
- 1...Sxe3
- 1.Qg6?
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.f6#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...cxd4
- 1.Qh4?
- 1...Kxf5
- 2.Qh7#
- 1...Bxh4
- 2.Rxf4#
- 1...fxg3
- 2.Sf2#
- 2.Sxf6#
- 1...cxd4
- 2.Sd6#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxe5!
- 1...Kxf5
- 1.Qb7?
- 1...Kxf5
- 2.Qh7#
- 1...fxg3
- 2.d6#
- 1...cxd4
- 2.Sd6#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxe5!
- 1...Kxf5
- 1.Qc7?
- 1...Kxf5
- 2.Qh7#
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.Qxe5#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...Kxf5
- 1.Qg7?
- 1...Kxf5
- 2.Sf2#
- 2.Sxf6#
- 2.Sd6#
- 2.Qh7#
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.Qxe5#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...Kxf5
- 1.Qh8?
- 1...Kxf5
- 2.Qh7#
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.Qxe5#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...Kxf5
- 1.gxf4?
- 1...Bxf4
- 2.Sxf6#
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.f6#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...Bh4!
- 1...Bxf4
- 1.d6?
- 1...fxg3
- 2.Qb7#
- 1...fxe5
- 2.f6#
- 1...Bh6
- 2.Sxf6#
- 1...Bh4
- 2.Rxf4#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...cxd4!
- 1...fxg3
- 1.exf6?
- 1...Bxf6
- 2.Sxf6#
- 2.Rxf4#
- 1...fxg3
- 2.Qe7#
- 1...cxd4
- 2.Sd6#
- 1...Bh4
- 2.Rxf4#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...Bh6!
- 1...Bxf6
- 1.e6?
- 1...cxd4
- 2.Sd6#
- 1...Bh6
- 2.Sxf6#
- 1...Bh4
- 2.Rxf4#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...fxg3!
- 1...cxd4
- 1.Ka7?
- Keys
- 1.Qe7!
- 1...Kxf5
- 2.Qh7#
- 1...fxg3
- 2.exf6#
- 1...cxd4
- 2.Sd6#
- 1...fxe5
- 2.Qxe5#
- 1...Bh4
- 2.Rxf4#
- 1...Bh6
- 2.Sxf6#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sc3
- 2.Sf2#
- 1...Se3
- 2.Sf2#
- 1...Kxf5
- 1.Qe7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAB(L)+P(K)
- Tries
- Try
- K(M);P-FLIGHT
- Vars
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAB(L)+P(K)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- K(M);S_FLIGHT
- Vars
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAB(L)+P(K)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- K(M);P-FLIGHT
- Vars
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAB(L)+P(K)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- R(B);CHECK
- Vars
- S(a);SBLOCK,XR(B)::S(G)
- Refutation
- P(e);XR(B)
- Try
- Q(L);
- Vars
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAB(L)+P(K)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- Q(L);
- Vars
- K(d);OGATEB,P_SPINP(e),S_FLIGHT,XP(K)::QAB(L)
- B(g);N_GUARD,XQ(L)::R1(B),XP(e)
- P(f);SBLOCK,XP(F)::S(H)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(h);XP(J)
- Try
- Q(L);
- Vars
- K(d);OGATEB,P_SPINP(e),S_FLIGHT,XP(K)::QAB(L)
- P(e);XP(C)::QAB(L)+P(I)
- P(f);SBLOCK,XP(F)::S(H)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(h);XP(J)
- Try
- Q(L);
- Vars
- K(d);OGATEB,P_SPINP(e),S_FLIGHT,XP(K)::QAB(L)
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAR1(L),XP(h)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- Q(L);
- Vars
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAR1(L),XP(h)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- Q(L);
- Vars
- K(d);OGATEB,P_SPINP(e),S_FLIGHT,XP(K)::QAB(L)
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAR1(L),XP(h)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- P(C);XP(e)
- Vars
- B(g);N_GUARD,XP(C)::S(G),XP(h)
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,XP(J)::QAB(L)+P(K)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- B(g);
- Try
- P(I);
- Vars
- P(e);XP(C)::QAB(L)
- P(h);OGATE,XP(J)::QAB(L)+P(K)
- B(g);N_GUARD::S(G),XP(h)
- B(g);N_GUARD::R1(B),XP(e)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(f);XP(F)
- Try
- P(J);XP(h)
- Vars
- P(e);XP(C)::QAR(L)
- P(f);SBLOCK,XP(F)::S(H)
- B(g);N_GUARD::R1(B),XP(e)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- B(g);
- Try
- P(J);
- Vars
- P(f);SBLOCK,XP(F)::S(H)
- B(g);N_GUARD::S(G),XP(h)
- B(g);N_GUARD::R1(B),XP(e)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- Refutation
- P(e);XP(C)
- Try
- Actual
- Q(L);
- Vars
- K(d);OGATEB,P_SPINP(e),S_FLIGHT,XP(K)::QAB(L)
- P(e);XP(C)::QAR(L)+P(J),XP(h)
- P(f);SBLOCK,XP(F)::S(H)
- P(h);OGATE,P_SPINP(h),XP(J)::QAR1(L),XP(h)
- B(g);N_GUARD::R1(B),XP(e)
- B(g);N_GUARD::S(G),XP(h)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
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).