MESON Chess Problem Database
Problem Display
PID: 62890 (8/1K6/5p2/7R/p3N1k1/Pp2PN1R/1q6/7b w - - 0 1)
Andrade, Barry Jack da Costa
Bernard, Henry D'Oyly
Chess, 1944
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Sh2#
- 2.Sf2#
- 1...Qc1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qxa3
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qc3
- 2.Sh2#
- 2.Sf2#
- 1...Qd4
- 2.Sh2#
- 2.Sf2#
- 1...Qe5
- 2.Sf2#
- 1...Qb1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qa2
- 2.Sxf6#
- 1...Qc2
- 2.Sxf6#
- 1...Qd2
- 2.Sxf6#
- 1...Qe2
- 2.Sxf6#
- 1...Qf2
- 2.Sxf2#
- 2.Sxf6#
- 1...Qg2
- 2.Sxf6#
- 1...Qh2
- 2.Sxh2#
- 2.Sxf6#
- 1...Bg2
- 2.Sh2#
- 1...Bxf3
- 2.R3h4#
- 1...f5
- 2.R5h4#
- 1...Qa1
- Tries
- 1.Ka6?
- 1...Qxa3
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Bxf3
- 2.R3h4#
- 1...Qa1
- 2.Sh2#
- 2.Sf2#
- 1...Qc1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qc3
- 2.Sh2#
- 2.Sf2#
- 1...Qd4
- 2.Sh2#
- 2.Sf2#
- 1...Qe5
- 2.Sf2#
- 1...Qb1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qa2
- 2.Sxf6#
- 1...Qc2
- 2.Sxf6#
- 1...Qd2
- 2.Sxf6#
- 1...Qf2
- 2.Sxf2#
- 2.Sxf6#
- 1...Qg2
- 2.Sxf6#
- 1...Qh2
- 2.Sxh2#
- 2.Sxf6#
- 1...Bg2
- 2.Sh2#
- 1...f5
- 2.R5h4#
- 1...Qe2+!
- 1...Qxa3
- 1.Kb6?
- 1...Qxa3
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Bxf3
- 2.R3h4#
- 1...Qa1
- 2.Sh2#
- 2.Sf2#
- 1...Qc1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qc3
- 2.Sh2#
- 2.Sf2#
- 1...Qe5
- 2.Sf2#
- 1...Qb1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qa2
- 2.Sxf6#
- 1...Qc2
- 2.Sxf6#
- 1...Qd2
- 2.Sxf6#
- 1...Qe2
- 2.Sxf6#
- 1...Qf2
- 2.Sxf2#
- 2.Sxf6#
- 1...Qg2
- 2.Sxf6#
- 1...Qh2
- 2.Sxh2#
- 2.Sxf6#
- 1...Bg2
- 2.Sh2#
- 1...f5
- 2.R5h4#
- 1...Qd4+!
- 1...Qxa3
- 1.Ka7?
- 1...Qxa3
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Bxf3
- 2.R3h4#
- 1...Qa1
- 2.Sh2#
- 2.Sf2#
- 1...Qc1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qc3
- 2.Sh2#
- 2.Sf2#
- 1...Qe5
- 2.Sf2#
- 1...Qb1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qa2
- 2.Sxf6#
- 1...Qc2
- 2.Sxf6#
- 1...Qd2
- 2.Sxf6#
- 1...Qe2
- 2.Sxf6#
- 1...Qf2
- 2.Sxf2#
- 2.Sxf6#
- 1...Qg2
- 2.Sxf6#
- 1...Qh2
- 2.Sxh2#
- 2.Sxf6#
- 1...Bg2
- 2.Sh2#
- 1...f5
- 2.R5h4#
- 1...Qd4+!
- 1...Qxa3
- 1.Kb8?
- 1...Qh2+
- 2.Sxh2#
- 1...Qxa3
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Bxf3
- 2.R3h4#
- 1...Qa1
- 2.Sh2#
- 2.Sf2#
- 1...Qc1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qc3
- 2.Sh2#
- 2.Sf2#
- 1...Qd4
- 2.Sh2#
- 2.Sf2#
- 1...Qb1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qa2
- 2.Sxf6#
- 1...Qc2
- 2.Sxf6#
- 1...Qd2
- 2.Sxf6#
- 1...Qe2
- 2.Sxf6#
- 1...Qf2
- 2.Sxf2#
- 2.Sxf6#
- 1...Qg2
- 2.Sxf6#
- 1...Bg2
- 2.Sh2#
- 1...f5
- 2.R5h4#
- 1...Qe5+!
- 1...Qh2+
- 1.Rg5+?
- 1...Kxh3
- 2.Rg3#
- 1...fxg5!
- 1...Kxh3
- 1.Ka6?
- Keys
- 1.Ka8!
- 1...Qxa3
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Bxf3
- 2.R3h4#
- 1...Qa1
- 2.Sh2#
- 2.Sf2#
- 1...Qc1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qc3
- 2.Sh2#
- 2.Sf2#
- 1...Qd4
- 2.Sh2#
- 2.Sf2#
- 1...Qe5
- 2.Sf2#
- 1...Qb1
- 2.Sh2#
- 2.Sf2#
- 2.Sxf6#
- 1...Qa2
- 2.Sxf6#
- 1...Qc2
- 2.Sxf6#
- 1...Qd2
- 2.Sxf6#
- 1...Qe2
- 2.Sxf6#
- 1...Qf2
- 2.Sxf2#
- 2.Sxf6#
- 1...Qg2
- 2.Sxf6#
- 1...Qh2
- 2.Sxh2#
- 2.Sxf6#
- 1...Bg2
- 2.Sh2#
- 1...f5
- 2.R5h4#
- 1...Qxa3
- 1.Ka8!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(b);N_GUARD::S(E)
- Q(b);N_GUARD::S(E),XP(f)
- B(a);S_CUTQ(b)::S(C)
- B(a);P_PINS(E),SBLOCK,XS(C)::R1(D)
- P(f);SBLOCK::R1(F)
- Tries
- Try
- K(G);S_FLIGHT
- Vars
- B(a);SBLOCK,XS(C)::R1(D)
- Q(b);N_GUARD::S(E)
- Q(b);N_GUARD::S(E),XP(f)
- B(a);S_CUTQ(b)::S(C)
- P(f);SBLOCK::R1(F)
- Refutation
- Q(b);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- B(a);SBLOCK,XS(C)::R1(D)
- Q(b);N_GUARD::S(E)
- Q(b);N_GUARD::S(E),XP(f)
- B(a);S_CUTQ(b)::S(C)
- P(f);SBLOCK::R1(F)
- Refutation
- Q(b);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- B(a);SBLOCK,XS(C)::R1(D)
- Q(b);N_GUARD::S(E)
- Q(b);N_GUARD::S(E),XP(f)
- B(a);S_CUTQ(b)::S(C)
- P(f);SBLOCK::R1(F)
- Refutation
- Q(b);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- Q(b);CHECK,N_GUARD::S(C),XQ(b)
- B(a);SBLOCK,XS(C)::R1(D)
- Q(b);N_GUARD::S(E),XP(f)
- B(a);S_CUTQ(b)::S(C)
- P(f);SBLOCK::R1(F)
- Refutation
- Q(b);CHECK
- Try
- R(F);CHECK
- Vars
- K(e);OGATE,S_FLIGHT,XR(D)::R1(F)
- Refutation
- P(f);XR(F)
- Try
- Actual
- K(G);S_FLIGHT
- Vars
- B(a);P_PINS(E),SBLOCK,XS(C)::R1(D)
- Q(b);N_GUARD::S(E)
- Q(b);N_GUARD::S(E),XP(f)
- B(a);S_CUTQ(b)::S(C)
- P(f);SBLOCK::R1(F)
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).