MESON Chess Problem Database
Problem Display
PID: 6402 (R3B1Q1/8/2Ppp3/1krnR3/N7/1Pp5/N7/4B2K w - - 0 1)
Blake, Percy Francis
HM., Evening Standard, 1929
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.c7#
- 1...Sb4
- 2.S2xc3#
- 1...Sf4
- 2.c7#
- 1...Sb6
- 2.S4xc3#
- 1...c2
- 2.Ra5#
- 1...Se3
- Tries
- 1.Bd7?
- 1...Rxc6
- 2.Qb8#
- 1...Rc4
- 2.Qb8#
- 1...Se3
- 2.Qb8#
- 2.c7#
- 1...Sb4
- 2.S2xc3#
- 2.Qb8#
- 1...Sf4
- 2.Qb8#
- 2.c7#
- 1...Sb6
- 2.S4xc3#
- 1...Sf6
- 2.Qb8#
- 1...Sc7
- 2.Qb8#
- 1...Se7
- 2.Qb8#
- 1...c2
- 2.Ra5#
- 1...dxe5!
- 1...Rxc6
- 1.Qf7?
- 1...Rxc6
- 2.Qf1#
- 2.Qb7#
- 1...Rc4
- 2.Qb7#
- 1...Se3
- 2.Qb7#
- 2.c7#
- 1...Sb4
- 2.S2xc3#
- 2.Qb7#
- 1...Sf4
- 2.Qb7#
- 2.c7#
- 1...Sb6
- 2.S4xc3#
- 1...Sf6
- 2.Qb7#
- 1...Sc7
- 2.Qf1#
- 1...Se7
- 2.Qf1#
- 1...c2
- 2.Ra5#
- 1...dxe5!
- 1...Rxc6
- 1.Qh7?
- 1...Rxc6
- 2.Qd3#
- 2.Qb7#
- 1...Rc4
- 2.Qb7#
- 1...Se3
- 2.Qb7#
- 2.c7#
- 1...Sb4
- 2.S2xc3#
- 2.Qb7#
- 1...Sf4
- 2.Qb7#
- 2.c7#
- 1...Sb6
- 2.S4xc3#
- 1...Sf6
- 2.Qd3#
- 2.Qb7#
- 1...Sc7
- 2.Qd3#
- 1...Se7
- 2.Qd3#
- 1...c2
- 2.Ra5#
- 1...dxe5!
- 1...Rxc6
- 1.Qg4?
- 1...Rxc6
- 2.S2xc3#
- 2.Qe2#
- 2.Qb4#
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 2.bxc4#
- 1...Se3
- 2.S2xc3#
- 2.Qb4#
- 2.c7#
- 1...Sb4
- 2.S2xc3#
- 2.Qxb4#
- 2.Qc4#
- 1...Sf4
- 2.c7#
- 1...Sb6
- 2.S2xc3#
- 2.S4xc3#
- 2.Qb4#
- 1...Sf6
- 2.S2xc3#
- 2.Qe2#
- 2.Qb4#
- 2.Qc4#
- 1...Sc7
- 2.S2xc3#
- 2.Qe2#
- 2.Qb4#
- 2.Qc4#
- 1...Se7
- 2.S2xc3#
- 2.Qe2#
- 2.Qb4#
- 2.Qc4#
- 1...c2
- 2.Ra5#
- 1...dxe5!
- 1...Rxc6
- 1.Bd7?
- Keys
- 1.Qg1!
- 1...Rxc6
- 2.S4xc3#
- 2.Qb6#
- 2.Qf1#
- 1...dxe5
- 2.Qxc5#
- 1...Rc4
- 2.Qb6#
- 1...Se3
- 2.c7#
- 1...Sb4
- 2.S2xc3#
- 1...Sf4
- 2.c7#
- 1...Sb6
- 2.S4xc3#
- 1...Sf6
- 2.Qf1#
- 1...Sc7
- 2.Qf1#
- 1...Se7
- 2.Qf1#
- 1...c2
- 2.Ra5#
- 1...Rxc6
- 1.Qg1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- S(d);P_SPINR(c)::B(I)+P(G)
- S(d);N_GUARD,P_SPINR(c),SBLOCK::S(C),XP(a)
- S(d);N_GUARD,P_SPINR(c),SBLOCK::S(E),XP(a)
- P(a);::R1(H)
- Tries
- Try
- B(I);
- Vars
- R(c);P_SPINR(c),P_SPINS(d),XP(G)::QAR(J)
- R(c);P_SPINS(d)::QAR(J)
- S(d);N_GUARD,P_SPINR(c),SBLOCK::S(E),XP(a)
- S(d);N_GUARD,P_SPINR(c)::QAR(J)
- P(a);::R1(H)
- Refutation
- P(e);XR(F)
- Try
- Q(J);
- Vars
- R(c);P_SPINS(d)::QAR2(J)
- S(d);N_GUARD,P_SPINR(c),SBLOCK::S(E),XP(a)
- S(d);N_GUARD,P_SPINR(c)::QAR2(J)
- S(d);P_SPINR(c)::QAB(J)
- P(a);::R1(H)
- Refutation
- P(e);XR(F)
- Try
- Q(J);
- Vars
- R(c);P_SPINS(d)::QAR2(J)
- S(d);N_GUARD,P_SPINR(c),SBLOCK::S(E),XP(a)
- S(d);P_SPINR(c)::QAB(J)
- P(a);::R1(H)
- Refutation
- P(e);XR(F)
- Try
- Q(J);
- Vars
- S(d);P_SPINR(c)::B(I)+P(G)
- P(a);::R1(H)
- Refutation
- P(e);XR(F)
- Try
- Actual
- Q(J);
- Vars
- P(e);N_GUARD,XR(F)::QAR1(J),XR(c)
- R(c);OGATE,P_SPINS(d)::QAR1(J)
- S(d);P_SPINR(c)::B(I)+P(G)
- S(d);N_GUARD,P_SPINR(c),SBLOCK::S(C),XP(a)
- S(d);N_GUARD,P_SPINR(c),SBLOCK::S(E),XP(a)
- S(d);P_SPINR(c)::QAB(J)
- P(a);::R1(H)
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).