MESON Chess Problem Database
Problem Display
PID: 161405 (qBB1RN2/2P1n2r/1n1k4/1PpNp2p/1PP1P1b1/8/3Q3K/8 w - - 0 1)
Kopyl, Valery Volodimirovich
Best Problems, 2011
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...Sf5
- 2.Re6#
- 1...cxb4
- 2.Qxb4#
- 1...Qxb8
- Tries
- 1.Bxg4?
- threat
- 2.c8S#
- 1...Qxd5
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...cxb4
- 2.Qxb4#
- 1...Qa1
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa2
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa3
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa4
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa5
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa6
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sbc8
- 2.Rd8#
- 1...Sec8
- 2.Re6#
- 1...hxg4+!
- threat
- 1.Be6?
- threat
- 2.c8S#
- 1...Qxd5
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...cxb4
- 2.Qxb4#
- 1...Qa1
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa2
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa3
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa4
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa5
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa6
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sbc8
- 2.Rd8#
- 1...Sec8!
- threat
- 1.Bb7?
- threat
- 2.c8S#
- 1...Qxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...cxb4
- 2.Qxb4#
- 1...Qa1
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa2
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa3
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa4
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa5
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa6
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sbc8
- 2.Sxe7#
- 1...Sec8
- 2.Sxb6#
- 1...Bc8!
- threat
- 1.Bxg4?
- Keys
- 1.Bf5!
- threat
- 2.c8S#
- 1...Qxd5
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qxb8
- 2.cxb8Q#
- 2.cxb8B#
- 1...cxb4
- 2.Qxb4#
- 1...Qa1
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa2
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa3
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa4
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa5
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Qa6
- 2.c8Q#
- 2.c8S#
- 2.c8B#
- 2.c8R#
- 1...Sbc8
- 2.Rd8#
- 1...Sec8
- 2.Re6#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- Q(i);OGATE,XB(I)::PXQ(i)=Q
- S(g);OGATE::R1(K)
- P(b);OGATE,XP(C)::QAB(A),XP(b)
- Tries
- Try
- B(J);XB(a)
- Threat
- P=S
- Vars
- Q(i);OGATE,XB(I)::PXQ(i)=Q
- P(b);OGATE,XP(C)::QAB(A),XP(b)
- S(e);N_GUARD::R(K)
- S(g);OGATE::R1(K)
- Refutation
- P(d);CHECK,XB(J)
- Try
- B(J);
- Threat
- P=S
- Vars
- Q(i);OGATE,XB(I)::PXQ(i)=Q
- P(b);OGATE,XP(C)::QAB(A),XP(b)
- S(e);N_GUARD::R(K)
- Refutation
- S(g);
- Try
- B(J);
- Threat
- P=S
- Vars
- Q(i);OGATE,XB(I)::PXQ(i)=Q
- P(b);OGATE,XP(C)::QAB(A),XP(b)
- S(e);N_GUARD::QAR(A)+S(G),XS(g)
- S(g);N_GUARD::QAR(A)+S(G),XS(e)
- Refutation
- B(a);
- Try
- Actual
- B(J);
- Threat
- P=S
- Vars
- Q(i);OGATE,XB(I)::PXQ(i)=Q
- P(b);OGATE,XP(C)::QAB(A),XP(b)
- S(e);N_GUARD::R(K)
- S(g);OGATE::R1(K)
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).