MESON Chess Problem Database
Problem Display
PID: 236365 (2N5/PR6/rb1p2q1/1kBQ4/1P3pp1/1PpP3r/4R1P1/5BKn w - - 0 1)
Havran, Jozef
Variantim, 2017
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Qxd3
- 2.Sxd6#
- 1...Qe4
- 2.Sxd6#
- 1...Qf5
- 2.Sxd6#
- 1...Qh5
- 2.Sxd6#
- 1...Qf7
- 2.Sxd6#
- 1...Qh7
- 2.Sxd6#
- 1...Qe8
- 2.Sxd6#
- 1...Qg5
- 2.Sxd6#
- 1...Qg7
- 2.Sxd6#
- 1...Qg8
- 2.Sxd6#
- 1...Re3
- 2.Bxd6#
- 1...Ra1
- 2.Rxb6#
- 1...Ra2
- 2.Rxb6#
- 1...Ra3
- 2.Rxb6#
- 1...Ra4
- 2.Rxb6#
- 1...Ra5
- 2.Rxb6#
- 1...Rxa7
- 2.Rxb6#
- 1...Sf2
- 2.Bxd6#
- 1...dxc5
- 2.Qxc5#
- 1...Qxd3
- Tries
- 1.Se7?
- threat
- 2.Qc4#
- 2.Qc6#
- 1...Qxd3
- 2.Qc6#
- 1...Rxa7
- 2.Rxb6#
- 2.Qc4#
- 1...dxc5
- 2.Qc4#
- 2.Qxc5#
- 1...Ra1
- 2.Rxb6#
- 2.Qc4#
- 1...Ra2
- 2.Rxb6#
- 2.Qc4#
- 1...Ra3
- 2.Rxb6#
- 2.Qc4#
- 1...Ra4
- 2.Rxb6#
- 2.Qc4#
- 1...Ra5
- 2.Rxb6#
- 2.Qc4#
- 1...Qf7
- 2.Qc6#
- 1...Qe8
- 2.Qc4#
- 1...Qe6
- 2.Qc6#
- 1...Qg8
- 2.Qc6#
- 1...Qe4!
- threat
- 1.Re3?
- threat
- 2.Bxd6#
- 1...Rxa7
- 2.Rxb6#
- 1...dxc5
- 2.Qxc5#
- 1...Ra1
- 2.Rxb6#
- 1...Ra2
- 2.Rxb6#
- 1...Ra3
- 2.Rxb6#
- 1...Ra4
- 2.Rxb6#
- 1...Ra5
- 2.Rxb6#
- 1...Qe6
- 2.d4#
- 1...Qe4
- 2.Sxd6#
- 2.dxe4#
- 1...Qf5
- 2.Sxd6#
- 1...Qh5
- 2.Sxd6#
- 2.d4#
- 1...Qf7
- 2.Sxd6#
- 2.d4#
- 1...Qg5
- 2.Sxd6#
- 2.d4#
- 1...Qg8
- 2.Sxd6#
- 2.d4#
- 1...Rh5!
- threat
- 1.Re4?
- threat
- 2.Bf2#
- 2.Be3#
- 2.Bxb6#
- 1...Qxe4
- 2.Sxd6#
- 1...Rxa7
- 2.Rxb6#
- 1...dxc5
- 2.Qxc5#
- 1...Ra1
- 2.Rxb6#
- 1...Ra2
- 2.Rxb6#
- 1...Ra3
- 2.Rxb6#
- 1...Ra4
- 2.Rxb6#
- 1...Ra5
- 2.Rxb6#
- 1...Qf5
- 2.Sxd6#
- 1...Qh5
- 2.Sxd6#
- 1...Qf7
- 2.Sxd6#
- 1...Qg5
- 2.Sxd6#
- 1...Qg8
- 2.Sxd6#
- 1...Re3
- 2.Bxe3#
- 2.Bxb6#
- 2.Bxd6#
- 1...Rh5
- 2.d4#
- 1...Sf2
- 2.Bxf2#
- 2.Be3#
- 2.Bxb6#
- 2.Bxd6#
- 1...Qe6!
- threat
- 1.Re6?
- threat
- 2.Sxd6#
- 1...Rxa7
- 2.Rxb6#
- 1...dxc5
- 2.Qc4#
- 2.Qxc5#
- 1...Ra1
- 2.Rxb6#
- 1...Ra2
- 2.Rxb6#
- 1...Ra3
- 2.Rxb6#
- 1...Ra4
- 2.Rxb6#
- 1...Ra5
- 2.Rxb6#
- 1...Qxe6!
- threat
- 1.Rc7?
- threat
- 2.Qc4#
- 2.Qc6#
- 1...Qxd3
- 2.Sxd6#
- 2.Qc6#
- 1...Rxa7
- 2.Qc4#
- 1...Bxa7
- 2.Qc4#
- 1...Bxc7
- 2.Bxd6#
- 1...dxc5
- 2.Qc4#
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Ra4
- 2.Qc4#
- 1...Ra5
- 2.Qc4#
- 1...Qe6
- 2.Qc6#
- 1...Qe4
- 2.Sxd6#
- 1...Qf7
- 2.Sxd6#
- 2.Qc6#
- 1...Qe8
- 2.Sxd6#
- 2.Qc4#
- 1...Qg8
- 2.Sxd6#
- 2.Qc6#
- 1...Ba5
- 2.Bxd6#
- 2.Qc4#
- 1...Bxc5+!
- threat
- 1.a8S?
- threat
- 2.Sc7#
- 1...Rxa8
- 2.Rxb6#
- 1...dxc5
- 2.Qxc5#
- 1...Qf7
- 2.Sxd6#
- 1...Qh7
- 2.Sxd6#
- 1...Qg7
- 2.Sxd6#
- 1...Rh7!
- threat
- 1.Se7?
- Keys
- 1.d4!
- threat
- 2.Bxd6#
- 1...Rxa7
- 2.Rxb6#
- 1...dxc5
- 2.Qxc5#
- 1...Ra1
- 2.Rxb6#
- 1...Ra2
- 2.Rxb6#
- 1...Ra3
- 2.Rxb6#
- 1...Ra4
- 2.Rxb6#
- 1...Ra5
- 2.Rxb6#
- 1...Qe6
- 2.Re3#
- 1...Qe4
- 2.Sxd6#
- 1...Qf5
- 2.Sxd6#
- 1...Qh5
- 2.Sxd6#
- 2.Re3#
- 1...Qf7
- 2.Sxd6#
- 2.Re3#
- 1...Qg5
- 2.Sxd6#
- 2.Re3#
- 1...Qg8
- 2.Sxd6#
- 2.Re3#
- 1...Rh5
- 2.Re4#
- threat
- 1.d4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 10
- Sets
- Q(j);N_GUARD,XP(F)::S(L),XP(i)
- Q(j);N_GUARD::S(L),XP(i)
- R(c);N_PINB(H)::QAR(I)+B(H),XP(i)
- R(g);N_GUARD,N_PINB(H),P_PINB(A)::R1(K),XB(h)
- R(g);N_GUARD::R1(K),XB(h)
- R(g);N_GUARD,XP(J)::R1(K),XB(h)
- S(a);N_PINB(H)::QAR(I)+B(H),XP(i)
- P(i);OGATE,P_SPINP(i),XB(H)::QAR1(I),XP(i)
- Tries
- Try
- S(L);
- Threat
- DUALS(2)
- Vars
- Q(j);XP(F)::QAB1(I)
- Q(j);::QAB1(I)
- Refutation
- Q(j);
- Try
- R(C);N_SPINB(H)
- Threat
- QAR(I)+B(H),XP(i)
- Vars
- R(g);N_GUARD,XP(J)::R1(K),XB(h)
- P(i);OGATE,P_SPINP(i),XB(H)::QAR1(I),XP(i)
- R(g);N_GUARD,P_PINB(A)::R1(K),XB(h)
- R(g);N_GUARD::R1(K),XB(h)
- Q(j);N_GUARD::B(A)+P(F)
- Q(j);N_GUARD::S(L),XP(i)
- Refutation
- R(c);
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- Q(j);N_GUARD,XR(C)::S(L),XP(i)
- R(g);N_GUARD,XP(J)::R1(K),XB(h)
- P(i);OGATE,P_SPINP(i),XB(H)::QAR1(I),XP(i)
- R(g);N_GUARD,N_PINB(H),P_PINB(A)::R1(K),XB(h)
- R(g);N_GUARD::R1(K),XB(h)
- Q(j);N_GUARD::S(L),XP(i)
- R(c);N_GUARD::B(A)+P(F)
- Refutation
- Q(j);
- Try
- R(C);
- Threat
- S(L),XP(i)
- Vars
- R(g);N_GUARD,XP(J)::R1(K),XB(h)
- R(g);N_GUARD,N_PINB(H),P_PINB(A)::R1(K),XB(h)
- R(g);N_GUARD::R1(K),XB(h)
- Refutation
- Q(j);XR(C)
- Try
- R(K);N_PINB(h)
- Threat
- DUALS(2)
- Vars
- R(g);XP(J)::QAB1(I)
- B(h);XP(J)::QAB1(I)
- B(h);N_PINB(H),XR(K)::QAR(I)+B(H),XP(i)
- P(i);P_SPINP(i),XB(H)::QAB1(I)
- R(g);N_PINB(H),P_PINB(A)::QAB1(I)
- R(g);::QAB1(I)
- Q(j);::QAB1(I)
- Q(j);N_GUARD::S(L),XP(i)
- Refutation
- B(h);CHECK,P_SPINB(h),XB(H)
- Try
- P(J);
- Threat
- S(J)
- Vars
- R(g);N_GUARD,XS(J)::R1(K),XB(h)
- P(i);OGATE,P_SPINP(i),XB(H)::QAR1(I),XP(i)
- Q(j);N_GUARD::S(L),XP(i)
- Refutation
- R(c);
- Try
- Actual
- P(F);N_SPINB(H)
- Threat
- QAR(I)+B(H),XP(i)
- Vars
- R(g);N_GUARD,XP(J)::R1(K),XB(h)
- P(i);OGATE,P_SPINP(i),XB(H)::QAR1(I),XP(i)
- R(g);N_GUARD,P_PINB(A)::R1(K),XB(h)
- R(g);N_GUARD::R1(K),XB(h)
- Q(j);N_GUARD::B(A)+R(C)
- Q(j);N_GUARD::S(L),XP(i)
- R(c);N_GUARD::B(A)+R(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).