MESON Chess Problem Database
Problem Display
PID: 69768 (8/2Kp2pB/3P2N1/p1P1p1RP/P1n1k1p1/1QP1p1R1/1np2P2/2B5 w - - 0 1)
Lacny, Ludovit
1st Prize, Sachove umeni (Ceskoslovensky sach), 1955
#2
13 + 10
SOLUTION
- SOUND
- Sets
- 1...Kd3
- 2.Sf4#
- 1...Kd5
- 2.Rxe5#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...Sxa4
- 2.Qxc4#
- 1...Sd2
- 2.Rxe3#
- 1...Sa3
- 2.Rxe3#
- 1...Sb6
- 2.Rxe3#
- 1...Sxd6
- 2.Rxe3#
- 1...exf2
- 2.Qb7#
- 1...e2
- 2.Qb7#
- 1...Kd3
- Tries
- 1.Kxd7?
- 1...Kd3
- 2.Sf4#
- 1...Kd5
- 2.Rxe5#
- 1...Sxa4
- 2.Qxc4#
- 1...Sxd6
- 2.Rxe3#
- 1...exf2
- 2.Qb7#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...Sd2
- 2.Rxe3#
- 1...Sa3
- 2.Rxe3#
- 1...e2
- 2.Qb7#
- 1...Sb6+!
- 1...Kd3
- 1.Kb8?
- 1...Kd3
- 2.Sf4#
- 1...Sxa4
- 2.Qxc4#
- 1...Sxd6
- 2.Rxe3#
- 1...exf2
- 2.Qb7#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...Sd2
- 2.Rxe3#
- 1...Sa3
- 2.Rxe3#
- 1...Sb6
- 2.Rxe3#
- 1...e2
- 2.Qb7#
- 1...Kd5!
- 1...Kd3
- 1.Kd8?
- 1...Kd3
- 2.Sf4#
- 1...Sxa4
- 2.Qxc4#
- 1...Sxd6
- 2.Rxe3#
- 1...exf2
- 2.Qb7#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...Sd2
- 2.Rxe3#
- 1...Sa3
- 2.Rxe3#
- 1...Sb6
- 2.Rxe3#
- 1...e2
- 2.Qb7#
- 1...Kd5!
- 1...Kd3
- 1.Sf4+?
- 1...Kxf4
- 2.R5xg4#
- 1...g6!
- 1...Kxf4
- 1.Se7+?
- 1...Kf4
- 2.R5xg4#
- 1...g6!
- 1...Kf4
- 1.Bxb2?
- threat
- 2.Qxc4#
- 1...Kd5
- 2.Rxe5#
- 1...Sxb2
- 2.Rxe3#
- 1...Sxd6
- 2.Rxe3#
- 1...Sd2
- 2.Rxe3#
- 1...Sa3
- 2.Rxe3#
- 1...Sb6
- 2.Rxe3#
- 1...Kd3!
- threat
- 1.Bg8?
- 1...Sxa4
- 2.Qxc2#
- 2.Qxc4#
- 1...Sxd6
- 2.Rxe3#
- 2.Qd5#
- 1...exf2
- 2.Qb7#
- 1...Sd1
- 2.Qxc2#
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...Sd2
- 2.Rxe3#
- 2.Qd5#
- 1...Sa3
- 2.Rxe3#
- 2.Qd5#
- 1...Sb6
- 2.Rxe3#
- 1...e2
- 2.Qb7#
- 1...Kd3!
- 1...Sxa4
- 1.Rxe3+?
- 1...Kd5
- 2.Rexe5#
- 2.Rgxe5#
- 1...Sxe3!
- 1...Kd5
- 1.R3xg4+?
- 1...Kd3
- 2.Sf4#
- 1...Kd5
- 2.Rxe5#
- 1...Kf3!
- 1...Kd3
- 1.Rxe5+?
- 1...Kd3
- 2.Sf4#
- 1...Sxe5!
- 1...Kd3
- 1.Qb4?
- 1...Kd3
- 2.Sf4#
- 1...Kd5
- 2.Sf4#
- 1...Sxa4
- 2.Qxc4#
- 1...exf2
- 2.Rxe5#
- 2.Qb7#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...e2
- 2.Rxe5#
- 2.Qb7#
- 1...axb4!
- 1...Kd3
- 1.f3+?
- 1...Kd3
- 2.Sf4#
- 1...Kd5
- 2.Rxe5#
- 1...gxf3!
- 1...Kd3
- 1.h6?
- 1...Kd3
- 2.Sf4#
- 1...Kd5
- 2.Rxe5#
- 1...Sxa4
- 2.Qxc4#
- 1...Sxd6
- 2.Rxe3#
- 1...exf2
- 2.Qb7#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...Sd2
- 2.Rxe3#
- 1...Sa3
- 2.Rxe3#
- 1...Sb6
- 2.Rxe3#
- 1...e2
- 2.Qb7#
- 1...gxh6!
- 1...Kd3
- 1.Kxd7?
- Keys
- 1.Qb5!
- 1...Kd3
- 2.Rxe3#
- 1...Kd5
- 2.Sf4#
- 1...Sxa4
- 2.Qxc4#
- 1...Sxd6
- 2.Rxe5#
- 1...exf2
- 2.Qb7#
- 1...Sd1
- 2.Qxc4#
- 1...Sd3
- 2.Qxc4#
- 2.Qb7#
- 1...Sd2
- 2.Rxe5#
- 1...Sa3
- 2.Rxe5#
- 1...Sb6
- 2.Rxe5#
- 1...e2
- 2.Qb7#
- 1...Kd3
- 1.Qb5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(e);P_SPINP(c),S_FLIGHT::B(M)+S(K),DCHECK
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT::R1(H),XP(h)
- S(a);N_GUARD::QAR2(C),XS(d)
- S(a);N_GUARD,XP(F)::QAR2(C),XS(d)
- S(d);N_GUARD::R1(E),XP(c)
- S(d);N_GUARD,XP(J)::R1(E),XP(c)
- P(c);XP(B)::QAB(C)
- P(c);::QAB(C)
- Tries
- Try
- K(L);P-FLIGHT,XP(i)
- Vars
- K(e);P_SPINP(c),S_FLIGHT::B(M)+S(K),DCHECK
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT::R1(H),XP(h)
- S(a);N_GUARD,XP(F)::QAR2(C),XS(d)
- S(d);N_GUARD,XP(J)::R1(E),XP(c)
- P(c);XP(B)::QAB(C)
- S(a);N_GUARD::QAR2(C),XS(d)
- S(d);N_GUARD::R1(E),XP(c)
- P(c);::QAB(C)
- Refutation
- S(d);CHECK
- Try
- K(L);S_FLIGHT
- Vars
- K(e);P_SPINP(c),S_FLIGHT::B(M)+S(K),DCHECK
- S(a);N_GUARD,XP(F)::QAR2(C),XS(d)
- S(d);N_GUARD,XP(J)::R1(E),XP(c)
- P(c);XP(B)::QAB(C)
- S(a);N_GUARD::QAR2(C),XS(d)
- S(d);N_GUARD::R1(E),XP(c)
- P(c);::QAB(C)
- Refutation
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT
- Try
- K(L);S_FLIGHT
- Vars
- K(e);P_SPINP(c),S_FLIGHT::B(M)+S(K),DCHECK
- S(a);N_GUARD,XP(F)::QAR2(C),XS(d)
- S(d);N_GUARD,XP(J)::R1(E),XP(c)
- P(c);XP(B)::QAB(C)
- S(a);N_GUARD::QAR2(C),XS(d)
- S(d);N_GUARD::R1(E),XP(c)
- P(c);::QAB(C)
- Refutation
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT
- Try
- S(K);CHECK
- Vars
- K(e);P-FLIGHT,P_SPINP(c),XS(K)::R1(H),XP(f)
- Refutation
- P(j);P_SPINP(j)
- Try
- S(K);CHECK
- Vars
- K(e);P-FLIGHT,P_SPINP(c)::R1(H),XP(f)
- Refutation
- P(j);P_SPINP(j)
- Try
- B(A);XS(a)
- Threat
- QAR2(C),XS(d)
- Vars
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT::R1(H),XP(h)
- S(d);N_GUARD,XB(A)::R1(E),XP(c)
- S(d);N_GUARD,XP(J)::R1(E),XP(c)
- S(d);N_GUARD::R1(E),XP(c)
- Refutation
- K(e);P_SPINP(c),S_FLIGHT
- Try
- B(M);
- Vars
- P(c);XP(B)::QAB(C)
- S(d);N_GUARD::R1(E),XP(c)
- P(c);::QAB(C)
- Refutation
- K(e);P_SPINP(c),S_FLIGHT
- Try
- R(E);CHECK,XP(c)
- Refutation
- S(d);XR(E)
- Try
- R(E);CHECK,XP(f)
- Vars
- K(e);S_FLIGHT::B(M)+S(K),DCHECK
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT::R1(H),XP(h)
- Refutation
- K(e);S_FLIGHT
- Try
- R(H);CHECK,XP(h)
- Vars
- K(e);P_SPINP(c),S_FLIGHT::B(M)+S(K),DCHECK
- Refutation
- S(d);XR(H)
- Try
- Q(C);P_PINS(d)
- Vars
- K(e);N_SPINS(d),P_SPINP(c),S_FLIGHT::B(M)+S(K),DCHECK
- K(e);N_SPINS(d),P_SPINP(h),S_FLIGHT::S(K)
- S(a);N_GUARD,XP(F)::QAR2(C),XS(d)
- S(a);N_GUARD::QAR2(C),XS(d)
- Refutation
- P(g);N_SPINS(d),XQ(C)
- Try
- P(B);CHECK
- Vars
- K(e);S_FLIGHT::B(M)+S(K),DCHECK
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT::R1(H),XP(h)
- Refutation
- P(f);XP(B)
- Try
- P(I);
- Vars
- K(e);P_SPINP(c),S_FLIGHT::B(M)+S(K),DCHECK
- K(e);P_SPINP(h),P_SPINS(d),S_FLIGHT::R1(H),XP(h)
- S(a);N_GUARD,XP(F)::QAR2(C),XS(d)
- S(d);N_GUARD,XP(J)::R1(E),XP(c)
- P(c);XP(B)::QAB(C)
- S(a);N_GUARD::QAR2(C),XS(d)
- S(d);N_GUARD::R1(E),XP(c)
- P(c);::QAB(C)
- Refutation
- P(j);XP(I)
- Try
- Actual
- Q(C);
- Vars
- K(e);P_SPINP(c),P_SPINS(d),S_FLIGHT::R1(E),XP(c)
- K(e);P_SPINP(h),S_FLIGHT::S(K)
- S(a);N_GUARD,XP(F)::QAR2(C),XS(d)
- S(d);N_GUARD,XP(J)::R1(H),XP(h)
- P(c);XP(B)::QAB(C)
- S(a);N_GUARD::QAR2(C),XS(d)
- S(d);N_GUARD::R1(H),XP(h)
- P(c);::QAB(C)
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).