MESON Chess Problem Database
Problem Display
PID: 140749 (1b2R3/r1QBn2K/5pN1/3Nq2p/2PPknP1/2Pp4/3P2P1/5R2 w - - 0 1)
Loustau, Jean-Marc
Probleemblad, 1976
#2
13 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Bf5#
- 2.Rxf4#
- 1...Qd6
- 2.Bf5#
- 1...Qxc7
- 2.Sxf6#
- 2.Bf5#
- 1...Qxd5
- 2.Rxf4#
- 1...Qf5
- 2.Bxf5#
- 1...Qe6
- 2.Rxf4#
- 1...Sh3
- 2.Re1#
- 1...Se6
- 2.Re1#
- 1...Sfxg6
- 2.Re1#
- 1...Sxd5
- 2.Bf5#
- 1...Sf5
- 2.Sxf6#
- 2.Bxf5#
- 2.Rxf4#
- 1...Sc6
- 2.Sxf6#
- 2.Bf5#
- 2.Rxf4#
- 1...Sexg6
- 2.Sxf6#
- 2.Bf5#
- 1...Sc8
- 2.Sxf6#
- 2.Bf5#
- 2.Rxf4#
- 1...Sg8
- 2.Bf5#
- 2.Rxf4#
- 1...Qxd4
- Tries
- 1.Sdxf4?
- threat
- 2.Re1#
- 1...Qxd4
- 2.Bf5#
- 1...Qxf4
- 2.Bc6#
- 2.Rxf4#
- 2.Qc6#
- 1...Sxg6
- 2.Bf5#
- 2.Bc6#
- 2.Qc6#
- 1...Sd5
- 2.Bf5#
- 1...Sf5
- 2.Bxf5#
- 2.Bc6#
- 2.Qc6#
- 1...Ra1!
- threat
- 1.Sgxf4?
- threat
- 2.Re1#
- 1...Qf5+
- 2.Bxf5#
- 1...Qxd4
- 2.Bf5#
- 1...Qxf4
- 2.Rxf4#
- 1...Sxd5
- 2.Bf5#
- 1...Sf5
- 2.Sxf6#
- 2.Bxf5#
- 1...Ra1!
- threat
- 1.Sxe5?
- threat
- 2.Sxf6#
- 2.Rxf4#
- 1...Sxg2
- 2.Sxf6#
- 1...Sexd5
- 2.Bf5#
- 1...fxe5
- 2.Sf6#
- 1...Ra6
- 2.Rxf4#
- 1...Se2
- 2.Sxf6#
- 1...Sh3
- 2.Sxf6#
- 2.Re1#
- 1...Se6
- 2.Sxf6#
- 2.Re1#
- 1...Sfg6
- 2.Sxf6#
- 2.Re1#
- 1...Seg6
- 2.Sxf6#
- 2.Bf5#
- 1...Sg8
- 2.Bf5#
- 2.Rxf4#
- 1...f5
- 2.Sf6#
- 2.Rxf4#
- 1...Sfxd5!
- threat
- 1.Bf5+?
- 1...Sxf5
- 2.Sxf6#
- 2.Rxf4#
- 1...Qxf5!
- 1...Sxf5
- 1.Bc6?
- threat
- 2.Sxf6#
- 1...Qxd5
- 2.Rxf4#
- 1...Sfxd5
- 2.Re1#
- 1...Sexd5
- 2.Rxf4#
- 1...f5
- 2.Sf6#
- 1...hxg4!
- threat
- 1.Rxe7?
- threat
- 2.Sxf6#
- 2.Bf5#
- 2.Rxf4#
- 1...Sxg2
- 2.Sxf6#
- 2.Bf5#
- 1...Sxd5
- 2.Bf5#
- 1...Sxg6
- 2.Sxf6#
- 2.Bf5#
- 2.Re1#
- 1...hxg4
- 2.Sxf6#
- 2.Rxf4#
- 1...Qe6
- 2.Sxf6#
- 2.Rxf4#
- 1...Ra6
- 2.Bf5#
- 2.Rxf4#
- 1...Se2
- 2.Sxf6#
- 2.Bf5#
- 1...Sh3
- 2.Sxf6#
- 2.Bf5#
- 2.Re1#
- 1...Se6
- 2.Re1#
- 1...f5
- 2.Sf6#
- 2.Bxf5#
- 2.Rxf4#
- 2.Rxe5#
- 1...Qxe7+!
- threat
- 1.Qxe5+?
- 1...fxe5
- 2.Sf6#
- 1...Bxe5!
- 1...fxe5
- 1.Qb7?
- threat
- 2.Sxf6#
- 1...Qxd5
- 2.Bf5#
- 1...Sfxd5
- 2.Re1#
- 1...Sexd5
- 2.Bf5#
- 2.Rxf4#
- 1...f5
- 2.Sf6#
- 1...Rxb7!
- threat
- 1.dxe5?
- threat
- 2.Sxf6#
- 2.Rxf4#
- 1...Sxg2
- 2.Sxf6#
- 1...Sfxg6
- 2.Sxf6#
- 2.Re1#
- 1...Sexd5
- 2.Bf5#
- 1...Sexg6
- 2.Sxf6#
- 2.Bf5#
- 1...fxe5
- 2.Sf6#
- 1...Ra6
- 2.Rxf4#
- 1...Se2
- 2.Sxf6#
- 1...Sh3
- 2.Sxf6#
- 2.Re1#
- 1...Se6
- 2.Sxf6#
- 2.Re1#
- 1...Sg8
- 2.Bf5#
- 2.Rxf4#
- 1...f5
- 2.Sf6#
- 2.Rxf4#
- 1...Sfxd5!
- threat
- 1.Sdxf4?
- Keys
- 1.Qc6!
- threat
- 2.Sxf6#
- 1...Qxd5
- 2.Bf5#
- 1...Sfxd5
- 2.Re1#
- 1...Sexd5
- 2.Rxf4#
- 1...f5
- 2.Sf6#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(d);N_GUARD,P_SPINS(h)::B(K)
- Q(d);N_GUARD,P_SPINS(h),XS(H)::R1(A),XS(c)
- Q(d);N_GUARD,P_PINS(I),P_SPINS(h)::B(K),XQ(d)
- Q(d);N_GUARD::R1(A),XS(c)
- S(c);N_GUARD::R(A)
- S(c);N_GUARD,XS(I)::R(A)
- S(h);N_GUARD,P_SPINQ(d),XS(H)::B(K)
- Tries
- Try
- S(H);XS(c)
- Threat
- R(A)
- Vars
- Q(d);N_GUARD,P_SPINS(h),XP(F)::B(K)
- S(h);N_GUARD,P_SPINQ(d)::B(K)
- Refutation
- R(g);
- Try
- S(I);XS(c)
- Threat
- R(A)
- Vars
- Q(d);CHECK,N_GUARD,P_SPINS(h)::B(K),XQ(d)
- Q(d);N_GUARD,P_SPINS(h),XP(F)::B(K)
- Q(d);OGATE,P_SPINS(h),XS(I)::R1(A),XQ(d)
- S(h);N_GUARD,P_SPINQ(d),XS(H)::B(K)
- Refutation
- R(g);
- Try
- S(I);XQ(d)
- Threat
- DUALS(2)
- Vars
- S(c);XP(C)::S(H),XP(f)
- S(h);N_GUARD,XS(H)::B(K)
- P(f);XS(I)::S(H)
- R(g);::R1(A),XS(c)
- S(c);::S(H),XP(f)
- Refutation
- S(c);XS(H)
- Try
- B(K);CHECK
- Refutation
- Q(d);P_PINS(I),P_SPINS(h),XB(K)
- Try
- B(K);
- Threat
- B(K)+S(H),DCHECK,XP(f)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(h),XS(H)::R1(A),XS(c)
- S(c);N_GUARD,P_SPINS(c),XS(H)::R(A)
- S(h);P_PINQ(J),P_SPINQ(d),P_SPINS(h),XS(H)::R1(A),XS(c)
- P(f);::B(K)+S(H),DCHECK
- Refutation
- P(e);XP(G)
- Try
- R(M);P_PINQ(d),XS(h)
- Threat
- DUALS(3)
- Vars
- S(c);XS(H)::B(K)
- S(c);N_GUARD,N_SPINQ(d)::R(A)
- Refutation
- Q(d);CHECK,N_SPINQ(d),XR(M)
- Try
- Q(J);CHECK,XQ(d)
- Vars
- P(f);XQ(J)::S(H)
- Refutation
- B(i);XQ(J)
- Try
- Q(J);
- Threat
- QAB(J)+S(H),DCHECK,XP(f)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(h),XS(H)::B(K)
- S(c);N_GUARD,P_SPINS(c),XS(H)::R(A)
- P(f);::QAB(J)+S(H),DCHECK
- Refutation
- R(g);XQ(J)
- Try
- P(F);XQ(d)
- Threat
- DUALS(2)
- Vars
- S(c);XP(C)::S(H),XP(f)
- S(h);N_GUARD,XS(H)::B(K)
- P(f);XP(F)::S(H)
- R(g);::R1(A),XS(c)
- S(c);::S(H),XP(f)
- Refutation
- S(c);XS(H)
- Try
- Actual
- Q(J);
- Threat
- QAB(J)+S(H),DCHECK,XP(f)
- Vars
- Q(d);N_GUARD,P_SPINQ(d),P_SPINS(h),XS(H)::B(K)
- S(c);N_GUARD,P_SPINS(c),XS(H)::R(A)
- S(h);P_PINB(K),P_SPINQ(d),P_SPINS(h),XS(H)::R1(A),XS(c)
- P(f);::QAB(J)+S(H),DCHECK
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).