MESON Chess Problem Database
Problem Display
PID: 9640 (1K5n/1N1P1R2/Q7/3qp3/2B1k3/4p3/4N1P1/8 w - - 0 1)
Williams, Philip Hamilton
London Opinion, 1907
#2
8 + 5
| 1842 | The White King | 1914 |
| 5501 | Chess Cameos | 1936 |
SOLUTION
- SOUND
- Sets
- 1...Qxc4
- 2.Qxc4#
- 1...Qc6
- 2.Qxc6#
- 1...Qe6
- 2.Sc5#
- 1...Qxb7+
- 2.Qxb7#
- 1...Qxf7
- 2.Sd6#
- 1...Qd1
- 2.Sc5#
- 1...Qd2
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Qd4
- 2.Sg3#
- 1...Qa5
- 2.Sd6#
- 1...Qc5
- 2.Sxc5#
- 1...Qd6+
- 2.Sxd6#
- 1...Qxd7
- 2.Sc5#
- 1...Sg6
- 2.Qxg6#
- 1...Sxf7
- 2.Qg6#
- 1...Qxc4
- Tries
- 1.Kc8?
- 1...Qxc4+
- 2.Qxc4#
- 1...Qc6+
- 2.Qxc6#
- 1...Qxb7+
- 2.Qxb7#
- 1...Qc5+
- 2.Sxc5#
- 1...Qxf7
- 2.Sd6#
- 1...Sxf7
- 2.Qg6#
- 1...Qe6
- 2.Sc5#
- 1...Qd1
- 2.Sc5#
- 1...Qd2
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Qd4
- 2.Sg3#
- 1...Qa5
- 2.Sd6#
- 1...Qb5
- 2.Sd6#
- 1...Qd6
- 2.Sxd6#
- 1...Sg6
- 2.Qxg6#
- 1...Qxd7+!
- 1...Qxc4+
- 1.Rf8?
- 1...Qxb7+
- 2.Qxb7#
- 1...Qd6+
- 2.Sxd6#
- 1...Qxc4
- 2.Qxc4#
- 1...Qxd7
- 2.Sc5#
- 1...Qf7
- 2.Sd6#
- 1...Sf7
- 2.Qg6#
- 1...Qc6
- 2.Qxc6#
- 1...Qe6
- 2.Sc5#
- 1...Qg8
- 2.Sc5#
- 2.Sd6#
- 1...Qd1
- 2.Sc5#
- 1...Qd2
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Qd4
- 2.Sg3#
- 1...Qa5
- 2.Sd6#
- 1...Qc5
- 2.Sxc5#
- 1...Sg6
- 2.Qxg6#
- 1...Qb5!
- 1...Qxb7+
- 1.Qb6?
- threat
- 2.Sc3#
- 2.Sg3#
- 1...Qxb7+
- 2.Qxb7#
- 1...Qd6+
- 2.Sxd6#
- 1...Qxf7
- 2.Sd6#
- 2.Qb1#
- 1...Sxf7
- 2.Qg6#
- 1...Qd2
- 2.Sg3#
- 2.Sc5#
- 1...Qd3
- 2.Sg3#
- 2.Sc5#
- 1...Qd4
- 2.Sg3#
- 1...Qa5
- 2.Sg3#
- 2.Sd6#
- 2.Qb1#
- 1...Qc5
- 2.Sxc5#
- 2.Qb1#
- 1...Qxc4!
- threat
- 1.Qc6?
- threat
- 2.Sc5#
- 2.Sd6#
- 2.Qxd5#
- 1...Sxf7
- 2.Qg6#
- 1...Qxc6!
- threat
- 1.Qd6?
- threat
- 2.Qxd5#
- 1...Qxd6+
- 2.Sxd6#
- 1...Qxc4
- 2.Sg3#
- 1...Qxf7
- 2.Bd3#
- 2.Qd3#
- 1...Sxf7
- 2.Qg6#
- 1...Qb5
- 2.Sc3#
- 2.Sg3#
- 2.Qd3#
- 1...Qc6
- 2.Sc3#
- 2.Sg3#
- 2.Bd3#
- 2.Qd3#
- 2.Qxc6#
- 1...Qe6
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Bd3#
- 2.Qd3#
- 1...Qd1
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 1...Qd2
- 2.Sg3#
- 2.Sc5#
- 1...Qd3
- 2.Sg3#
- 2.Sc5#
- 2.Bxd3#
- 2.Qxd3#
- 1...Qd4
- 2.Sg3#
- 1...Qa5
- 2.Sg3#
- 2.Bd3#
- 2.Qd3#
- 1...Qc5
- 2.Sc3#
- 2.Sg3#
- 2.Sxc5#
- 2.Bd3#
- 2.Qd3#
- 1...Qxb7+!
- threat
- 1.Qe6?
- threat
- 2.Rf4#
- 2.Qg4#
- 2.Qxd5#
- 2.Qf5#
- 1...Qd6+
- 2.Sxd6#
- 1...Qxc4
- 2.Qxc4#
- 1...Qxe6
- 2.Sc5#
- 1...Qxd7
- 2.Sc5#
- 2.Rf4#
- 1...Sxf7
- 2.Qg4#
- 2.Qg6#
- 1...Qb5
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Qc6
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 2.Qxc6#
- 1...Qd1
- 2.Sc5#
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Qd2
- 2.Sc5#
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Qd3
- 2.Sc5#
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Qd4
- 2.Sg3#
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Qa5
- 2.Sd6#
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Qc5
- 2.Sxc5#
- 2.Rf4#
- 2.Qg4#
- 2.Qf5#
- 1...Sg6
- 2.Qxd5#
- 2.Qf5#
- 2.Qxg6#
- 1...Qxb7+!
- threat
- 1.d8Q?
- threat
- 2.Bxd5#
- 2.Qh4#
- 2.Qxd5#
- 1...Qxb7+
- 2.Qxb7#
- 1...Qd6+
- 2.Sxd6#
- 1...Qxc4
- 2.Sg3#
- 2.Qxc4#
- 1...Qxf7
- 2.Sd6#
- 2.Bd3#
- 2.Qd3#
- 1...Sxf7
- 2.Qg6#
- 1...Qb5
- 2.Sc3#
- 2.Sg3#
- 2.Qh4#
- 2.Qd3#
- 1...Qc6
- 2.Sc3#
- 2.Sg3#
- 2.Bd3#
- 2.Qh4#
- 2.Qxc6#
- 2.Qd3#
- 1...Qe6
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Bd3#
- 2.Qd3#
- 1...Qd1
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Qh4#
- 1...Qd2
- 2.Sg3#
- 2.Sc5#
- 2.Qh4#
- 1...Qd3
- 2.Sg3#
- 2.Sc5#
- 2.Bxd3#
- 2.Qh4#
- 2.Qxd3#
- 1...Qd4
- 2.Sg3#
- 2.Qh4#
- 1...Qa5
- 2.Sg3#
- 2.Sd6#
- 2.Bd3#
- 2.Qh4#
- 2.Qd3#
- 1...Qc5
- 2.Sc3#
- 2.Sg3#
- 2.Sxc5#
- 2.Bd3#
- 2.Qh4#
- 2.Qd3#
- 1...Qd7
- 2.Sc5#
- 1...Sg6
- 2.Bxd5#
- 2.Qxg6#
- 2.Qxd5#
- 1...Qxd8+!
- threat
- 1.d8R?
- threat
- 2.Bxd5#
- 1...Qxb7+
- 2.Qxb7#
- 1...Qd6+
- 2.Sxd6#
- 1...Qxc4
- 2.Sg3#
- 2.Qxc4#
- 1...Qxf7
- 2.Sd6#
- 2.Bd3#
- 1...Sxf7
- 2.Qg6#
- 1...Qb5
- 2.Sc3#
- 2.Sg3#
- 1...Qc6
- 2.Sc3#
- 2.Sg3#
- 2.Bd3#
- 2.Qxc6#
- 1...Qe6
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 2.Bd3#
- 1...Qd1
- 2.Sc3#
- 2.Sg3#
- 2.Sc5#
- 1...Qd2
- 2.Sg3#
- 2.Sc5#
- 1...Qd3
- 2.Sg3#
- 2.Sc5#
- 2.Bxd3#
- 1...Qd4
- 2.Sg3#
- 1...Qa5
- 2.Sg3#
- 2.Sd6#
- 2.Bd3#
- 1...Qc5
- 2.Sc3#
- 2.Sg3#
- 2.Sxc5#
- 2.Bd3#
- 1...Qd7
- 2.Sc5#
- 1...Qxd8+!
- threat
- 1.Kc8?
- Keys
- 1.Ka8!
- 1...Qxb7+
- 2.Qxb7#
- 1...Qxc4
- 2.Qxc4#
- 1...Qxf7
- 2.Sd6#
- 1...Qxd7
- 2.Sc5#
- 1...Sxf7
- 2.Qg6#
- 1...Qc6
- 2.Qxc6#
- 1...Qe6
- 2.Sc5#
- 1...Qd1
- 2.Sc5#
- 1...Qd2
- 2.Sc5#
- 1...Qd3
- 2.Sc5#
- 1...Qd4
- 2.Sg3#
- 1...Qa5
- 2.Sd6#
- 1...Qb5
- 2.Sd6#
- 1...Qc5
- 2.Sxc5#
- 1...Qd6
- 2.Sxd6#
- 1...Sg6
- 2.Qxg6#
- 1...Qxb7+
- 1.Ka8!
There are these versions: 155039
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- Q(c);OGATE,XB(C)::QAR2(D),XQ(c)
- Q(c);OGATEB::QAB(D),XQ(c)
- Q(c);N_GUARD::S(E)
- Q(c);CHECK,OGATE,XS(E)::QAB(D),XQ(c)
- Q(c);N_GUARD,XR(G)::S(E)
- Q(c);SBLOCK::S(A)
- Q(c);N_GUARD::S(E),XQ(c)
- Q(c);CHECK,N_GUARD::S(E),XQ(c)
- Q(c);N_GUARD,XP(F)::S(E)
- S(e);N_GUARD::QAB(D),XS(e)
- S(e);N_GUARD,XR(G)::QAB(D)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- Q(c);CHECK,OGATE,XB(C)::QAR2(D),XQ(c)
- Q(c);CHECK,OGATEB::QAB(D),XQ(c)
- Q(c);CHECK,OGATE,XS(E)::QAB(D),XQ(c)
- Q(c);CHECK,N_GUARD::S(E),XQ(c)
- Q(c);N_GUARD,XR(G)::S(E)
- S(e);N_GUARD,XR(G)::QAB(D)
- Q(c);N_GUARD,P_PINP(F)::S(E)
- Q(c);N_GUARD::S(E)
- Q(c);SBLOCK::S(A)
- Q(c);N_GUARD::S(E),XQ(c)
- S(e);N_GUARD::QAB(D),XS(e)
- Refutation
- Q(c);CHECK,XP(F)
- Try
- R(G);
- Vars
- Q(c);CHECK,OGATE,XS(E)::QAB(D),XQ(c)
- Q(c);CHECK,N_GUARD::S(E),XQ(c)
- Q(c);OGATE,XB(C)::QAR2(D),XQ(c)
- Q(c);N_GUARD,XP(F)::S(E)
- Q(c);N_GUARD::S(E)
- S(e);N_GUARD::QAB(D)
- Q(c);OGATEB::QAB(D),XQ(c)
- Q(c);SBLOCK::S(A)
- Q(c);N_GUARD::S(E),XQ(c)
- S(e);N_GUARD::QAB(D),XS(e)
- Refutation
- Q(c);P_PINS(E)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,OGATE,XS(E)::QAB(D),XQ(c)
- Q(c);CHECK,N_GUARD::S(E),XQ(c)
- S(e);N_GUARD,XR(G)::QAB(D)
- Q(c);::S(A)
- Refutation
- Q(c);XB(C)
- Try
- Q(D);P_PINQ(c)
- Threat
- DUALS(3)
- Vars
- S(e);N_GUARD,XR(G)::QAB(D)
- Refutation
- Q(c);N_SPINQ(c),XQ(D)
- Try
- Q(D);
- Threat
- QAB1(D),XQ(c)
- Vars
- Q(c);CHECK,XQ(D)::S(E),XQ(c)
- Q(c);XB(C)::S(A)
- S(e);N_GUARD,XR(G)::QAB(D)
- Q(c);::S(A)
- Refutation
- Q(c);CHECK,XS(E)
- Try
- Q(D);P_PINP(d)
- Threat
- DUALS(4)
- Vars
- Q(c);CHECK,N_GUARD::S(E),XQ(c)
- Q(c);OGATE,XB(C)::QAR2(D),XQ(c)
- Q(c);N_GUARD,N_SPINP(d),XQ(D)::S(E)
- Refutation
- Q(c);CHECK,XS(E)
- Try
- P(F);
- Threat
- DUALS(3)
- Vars
- Q(c);CHECK,OGATE,XS(E)::QAB(D),XQ(c)
- Q(c);CHECK,N_GUARD::S(E),XQ(c)
- S(e);N_GUARD,XR(G)::QAB(D)
- Q(c);N_GUARD::S(E)
- Refutation
- Q(c);CHECK,XQ(F)
- Try
- P(F);
- Threat
- B(C),XQ(c)
- Vars
- Q(c);CHECK,OGATE,XS(E)::QAB(D),XQ(c)
- Q(c);CHECK,N_GUARD::S(E),XQ(c)
- S(e);N_GUARD,XR(G)::QAB(D)
- Q(c);::S(A)
- Q(c);N_GUARD::S(E)
- Refutation
- Q(c);CHECK,XR(F)
- Try
- Actual
- K(H);P-FLIGHT,P_SPINS(E)
- Vars
- Q(c);CHECK,OGATE,XS(E)::QAB(D),XQ(c)
- Q(c);N_PINS(E),OGATE,XB(C)::QAR2(D),XQ(c)
- Q(c);N_PINS(E),XR(G)::S(E)
- Q(c);N_PINS(E),XP(F)::S(E)
- S(e);N_GUARD,XR(G)::QAB(D)
- Q(c);OGATEB::QAB(D),XQ(c)
- Q(c);N_PINS(E)::S(E)
- Q(c);N_PINS(E),SBLOCK::S(A)
- Q(c);N_PINS(E),P_PINQ(D)::S(E)
- Q(c);N_PINS(E)::S(E),XQ(c)
- S(e);N_GUARD::QAB(D),XS(e)
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).