MESON Chess Problem Database
Problem Display
PID: 248949 (K1B5/1P6/k1q5/8/8/8/1R1Q4/8 w - - 0 1)
Kirichenko, Anatoly Yakovlevich
Uralski Problemist, 1999
#2
5 + 2
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qxb7+
- 2.Bxb7#
- 1...Qd7
- 2.b8S#
- 1...Qe8
- 2.b8S#
- 1...Qc1
- 2.b8S#
- 1...Qc2
- 2.b8S#
- 1...Qc4
- 2.b8S#
- 1...Qc5
- 2.b8S#
- 1...Qb6
- 2.b8S#
- 1...Qd6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qe6
- 2.b8S#
- 1...Qf6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qg6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qh6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qc7
- 2.b8S#
- 1...Qxc8+
- 2.bxc8Q#
- 2.bxc8B#
- 1...Qa4
- Tries
- 1.Ra2+?
- 1...Kb6
- 2.Qa5#
- 1...Qa4
- 2.b8Q#
- 2.b8R#
- 1...Kb5!
- 1...Kb6
- 1.Qd8?
- 1...Qxb7+
- 2.Bxb7#
- 1...Qxc8+
- 2.bxc8Q#
- 2.bxc8B#
- 1...Qb6
- 2.Qxb6#
- 1...Qc4
- 2.Qb6#
- 2.b8S#
- 1...Qh1
- 2.Qb6#
- 1...Qg2
- 2.Qb6#
- 1...Qf3
- 2.Qb6#
- 1...Qa4
- 2.Qb6#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qe4
- 2.Qb6#
- 1...Qb5
- 2.b8S#
- 1...Qd5
- 2.Qb6#
- 1...Qd7
- 2.Qb6#
- 2.b8S#
- 1...Qe8
- 2.Qb6#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qc1
- 2.Qb6#
- 2.b8S#
- 1...Qc2
- 2.Qb6#
- 2.b8S#
- 1...Qc3
- 2.Qb6#
- 2.b8S#
- 1...Qc5
- 2.b8S#
- 1...Qd6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qe6
- 2.b8S#
- 1...Qf6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qg6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qh6
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qc7!
- 1...Qxb7+
- 1.Ra2+?
- Keys
- 1.Qb4!
- 1...Qxb7+
- 2.Bxb7#
- 1...Qxc8+
- 2.bxc8Q#
- 2.bxc8B#
- 1...Qb5
- 2.Qxb5#
- 1...Qh1
- 2.Ra2#
- 2.Qa3#
- 2.Qa4#
- 2.Qb5#
- 2.Qb6#
- 1...Qg2
- 2.Qa3#
- 2.Qa4#
- 2.Qb5#
- 2.Qb6#
- 1...Qf3
- 2.Qa4#
- 2.Qb5#
- 2.Qb6#
- 1...Qa4
- 2.Qxa4#
- 2.Qb6#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qe4
- 2.Ra2#
- 2.Qb5#
- 2.Qb6#
- 1...Qd5
- 2.Qb6#
- 1...Qd7
- 2.Qb6#
- 2.b8S#
- 1...Qe8
- 2.Qb6#
- 2.b8S#
- 1...Qc1
- 2.Qa3#
- 2.Qa4#
- 2.Qb5#
- 2.Qb6#
- 2.b8S#
- 1...Qc2
- 2.Qb5#
- 2.Qb6#
- 2.b8S#
- 1...Qc3
- 2.Qb5#
- 2.Qb6#
- 2.b8S#
- 1...Qc4
- 2.Qb6#
- 2.b8S#
- 1...Qc5
- 2.b8S#
- 1...Qb6
- 2.Qxb6#
- 2.b8S#
- 1...Qd6
- 2.Ra2#
- 2.Qa4#
- 2.Qb5#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qe6
- 2.Qa3#
- 2.Qa4#
- 2.Qb5#
- 2.b8S#
- 1...Qf6
- 2.Ra2#
- 2.Qa3#
- 2.Qa4#
- 2.Qb5#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qg6
- 2.Ra2#
- 2.Qa3#
- 2.Qa4#
- 2.Qb5#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qh6
- 2.Ra2#
- 2.Qa3#
- 2.Qa4#
- 2.Qb5#
- 2.b8Q#
- 2.b8S#
- 2.b8B#
- 2.b8R#
- 1...Qc7
- 2.Qb5#
- 2.b8S#
- 1...Qxb7+
- 1.Qb4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(b);CHECK,OGATE,P_SPINQ(b),XP(C)::B(E),XQ(b)
- Q(b);N_PINP(C)::P=S
- Q(b);N_PINP(C),P_PINB(E)::P=S
- Q(b);CHECK,N_PINP(C),XB(E)::PXQ(b)=Q
- Tries
- Try
- R(A);CHECK
- Vars
- K(a);P-FLIGHT::QAB1(B)
- Q(b);N_PINP(C),P_SPINQ(b)::P=Q
- Refutation
- K(a);S_FLIGHT
- Try
- Q(B);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XP(C)::B(E),XQ(b)
- Q(b);CHECK,N_PINP(C),XB(E)::PXQ(b)=Q
- Q(b);N_GUARD,N_PINP(C)::QAR1(B),XQ(b)
- Q(b);N_GUARD::QAR1(B)
- Q(b);N_PINP(C)::P=S
- Refutation
- Q(b);N_PINP(C)
- Try
- Actual
- Q(B);
- Vars
- Q(b);CHECK,OGATE,P_SPINQ(b),XP(C)::B(E),XQ(b)
- Q(b);CHECK,N_PINP(C),XB(E)::PXQ(b)=Q
- Q(b);N_GUARD,N_PINP(C)::QAB1(B),XQ(b)
- Q(b);N_GUARD::QAR1(B)
- Q(b);N_PINP(C)::P=S
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).