MESON Chess Problem Database
Problem Display
PID: 63522 (B4bK1/Q3pRP1/8/1P1q3N/3Bk1P1/2Pp4/5Pb1/Rn5n w - - 0 1)
Williams, Philip Hamilton
Chess Amateur (The), 1909
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Qc6
- 2.Bxc6#
- 1...Qb7
- 2.Bxb7#
- 2.Qxb7#
- 1...Qxa8
- 2.Qxa8#
- 1...Bf1
- 2.f3#
- 1...Bh3
- 2.f3#
- 1...Sd2
- 2.Re1#
- 1...Sa3
- 2.Re1#
- 1...Sxf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...e6
- 2.Rf4#
- 1...Qc6
- Tries
- 1.Be5?
- threat
- 2.Qe3#
- 2.Qd4#
- 1...Qxa8
- 2.Qd4#
- 1...Sxf2
- 2.Qd4#
- 1...Qc6
- 2.Qd4#
- 1...Qb7
- 2.Qd4#
- 1...Kxe5!
- threat
- 1.Qb6?
- threat
- 2.Qe6#
- 2.Qg6#
- 1...Qxa8
- 2.Qe6#
- 1...Bxg7
- 2.Qg6#
- 1...Qc6
- 2.Bxc6#
- 2.Qxc6#
- 1...Qb7
- 2.Bxb7#
- 2.Qe6#
- 2.Qxb7#
- 1...d2
- 2.Qg6#
- 1...e5
- 2.Qg6#
- 1...Sg3
- 2.Sxg3#
- 2.Qe6#
- 1...e6
- 2.Rf4#
- 2.Qxe6#
- 1...Sxc3!
- threat
- 1.Qb8?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Qxa8
- 2.Qe5#
- 2.Qxa8#
- 1...Bxg7
- 2.Qf4#
- 1...Qc6
- 2.Bxc6#
- 2.Qe5#
- 1...Qb7
- 2.Bxb7#
- 2.Qe5#
- 2.Qxb7#
- 1...e5
- 2.Qxe5#
- 1...d2!
- threat
- 1.Qa2?
- threat
- 2.Bxd5#
- 2.Qxd5#
- 1...Qxa8
- 2.Rf4#
- 2.Qe6#
- 2.Qxa8#
- 1...d2
- 2.Qxb1#
- 2.Qc2#
- 1...Qc6
- 2.Bxc6#
- 2.Rf4#
- 2.Qe6#
- 1...Qb7
- 2.Bxb7#
- 2.Rf4#
- 2.Qe6#
- 1...e6
- 2.Rf4#
- 1...Sxc3!
- threat
- 1.Qa6?
- threat
- 2.Qe6#
- 2.Qg6#
- 1...Qxa8
- 2.Qe6#
- 2.Qxa8#
- 1...Bxg7
- 2.Qg6#
- 1...Qc6
- 2.Bxc6#
- 2.Qxc6#
- 1...Qb7
- 2.Bxb7#
- 2.Qxb7#
- 2.Qe6#
- 1...d2
- 2.Qg6#
- 1...e5
- 2.Qg6#
- 1...Sg3
- 2.Sxg3#
- 2.Qe6#
- 1...e6
- 2.Rf4#
- 2.Qxe6#
- 1...Sxc3!
- threat
- 1.Qc7?
- threat
- 2.Qf4#
- 2.Qe5#
- 1...Qxa8
- 2.Qe5#
- 1...Bxg7
- 2.Qf4#
- 1...Qc6
- 2.Bxc6#
- 2.Qe5#
- 2.Qxc6#
- 1...Qb7
- 2.Bxb7#
- 2.Qe5#
- 2.Qxb7#
- 1...e5
- 2.Qxe5#
- 1...d2!
- threat
- 1.Qd7?
- threat
- 2.Bxd5#
- 2.Qf5#
- 2.Qe6#
- 2.Qxd5#
- 1...Qxa8
- 2.Rf4#
- 2.Qf5#
- 2.Qe6#
- 1...Bxg7
- 2.Bxd5#
- 2.Qf5#
- 2.Qxd5#
- 1...d2
- 2.Qf5#
- 1...e5
- 2.Bxd5#
- 2.Qf5#
- 2.Qxd5#
- 1...Qc6
- 2.Bxc6#
- 2.Rf4#
- 2.Qf5#
- 2.Qxc6#
- 2.Qe6#
- 1...Qb7
- 2.Bxb7#
- 2.Rf4#
- 2.Qf5#
- 2.Qe6#
- 2.Qxb7#
- 1...Sg3
- 2.Sxg3#
- 2.Bxd5#
- 2.Qe6#
- 2.Qxd5#
- 1...e6
- 2.Rf4#
- 2.Qxe6#
- 1...Sxc3!
- threat
- 1.Be5?
- Keys
- 1.Qa4!
- 1...Qxa8
- 2.Qxa8#
- 1...Bxg7
- 2.Bxg7#
- 1...Sxc3
- 2.Bxc3#
- 1...Sxf2
- 2.Sg3#
- 1...Qc6
- 2.Bxc6#
- 1...Qb7
- 2.Bxb7#
- 1...d2
- 2.Qc2#
- 1...e5
- 2.Bc5#
- 1...Bf1
- 2.f3#
- 1...Bf3
- 2.Bf6#
- 1...Bh3
- 2.f3#
- 1...Sd2
- 2.Re1#
- 1...Sa3
- 2.Re1#
- 1...Sg3
- 2.Sxg3#
- 1...e6
- 2.Rf4#
- 1...Qxa8
- 1.Qa4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Q(f);N_PINR(I),OGATEB::B(K),XQ(f)
- Q(f);N_PINR(I),N_SPINQ(f),OGATE,XB(K)::QAB(H),XQ(f)
- B(c);N_GUARD::P(B)
- S(a);OGATE::R(A)
- S(b);N_GUARD,XP(B)::S(G)
- S(b);N_GUARD::S(G),XS(b)
- P(g);N_PINR(I)::R1(I)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- Q(f);N_PINR(I),N_SPINQ(f),XB(K)::QAR1(H)
- S(b);XP(B)::QAR1(H)
- Q(f);N_PINR(I)::QAR1(H)
- Refutation
- K(e);N_SPINQ(f),P-FLIGHT,XB(D)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(f);N_PINR(I),N_SPINQ(f),XB(K)::QAR2(H)
- B(h);XP(J)::QAB(H)
- P(d);::QAB(H)
- P(g);::QAB(H)
- Refutation
- S(a);XP(C)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(h);XP(J)::QAR1(H)
- P(g);::QAR1(H),XP(g)
- Refutation
- P(d);
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- P(g);N_PINR(I)::R1(I)
- Refutation
- S(a);XP(C)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- B(h);XP(J)::QAB(H)
- P(d);::QAB(H)
- P(g);::QAB(H)
- Refutation
- S(a);XP(C)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(f);N_PINR(I),N_SPINQ(f),XB(K)::QAR1(H)
- B(h);XP(J)::QAR1(H)
- P(g);::QAR1(H),XP(g)
- Refutation
- P(d);
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- P(d);::QAB1(H)
- Refutation
- S(a);XP(C)
- Try
- Actual
- Q(H);
- Vars
- Q(f);N_PINR(I),N_SPINQ(f),OGATE,XB(K)::QAB(H),XQ(f)
- B(h);OGATE,XP(J)::QAR(H)+B(D),XB(h)
- S(a);OGATE,XP(C)::QAR(H)+B(D),XS(a)
- S(b);N_GUARD,XP(B)::S(G)
- Q(f);N_PINR(I),OGATEB::B(K),XQ(f)
- P(d);OGATEB::QAB(H)
- P(g);SBLOCK::QAR(H)+B(D)
- B(c);N_GUARD::P(B)
- B(c);SBLOCK::QAR(H)+B(D)
- S(a);OGATE::R(A)
- S(b);N_GUARD::S(G),XS(b)
- P(g);N_PINR(I)::R1(I)
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).