MESON Chess Problem Database
Problem Display
PID: 2757 (1Nb3qB/3p1pP1/1p1K1k1P/1Pp3pP/1p2Pp2/8/1P6/1RQ5 w - - 0 1)
Thursby, John Ormerod Scarlett
Source?, 0000
#2
11 + 10
| 3357 | 75 Chess Problems | 1883 |
| 14869 | British Championship Solving Ty. | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qh7
- 2.g8S#
- 1...Qxg7
- 2.Bxg7#
- 1...Qd8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qe8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qf8+
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...Qxh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...Ba6
- 2.Sxd7#
- 1...Bb7
- 2.Sxd7#
- 1...b3
- 2.Qc3#
- 1...g4
- 2.Qxf4#
- 1...Qh7
- Tries
- 1.Qd2?
- 1...Qf8+
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...Qxg7
- 2.Bxg7#
- 1...Qxh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...g4
- 2.Qxf4#
- 1...Qh7
- 2.g8S#
- 1...Qd8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qe8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Ba6
- 2.Sxd7#
- 1...Bb7
- 2.Sxd7#
- 1...b3
- 2.Qc3#
- 1...c4
- 2.Qd4#
- 1...f3!
- 1...Qf8+
- 1.Qc2?
- threat
- 2.e5#
- 1...Qf8+
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...Qe8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...g4!
- threat
- 1.Qxc5?
- threat
- 2.Qd4#
- 2.Qe5#
- 2.Qf5#
- 1...Qf8+
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...Qh7
- 2.Qd4#
- 2.Qe5#
- 2.g8S#
- 1...Qe8
- 2.Qf5#
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...g4
- 2.Qe5#
- 2.Qf5#
- 1...bxc5!
- threat
- 1.b3?
- threat
- 2.Qb2#
- 1...Qf8+
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...g4
- 2.Qxf4#
- 1...Qe8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...c4!
- threat
- 1.h7?
- threat
- 2.hxg8S#
- 1...Qf8+
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...Qxh7
- 2.g8S#
- 1...Qxh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...g4
- 2.Qxf4#
- 1...Qd8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qe8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qxg7!
- threat
- 1.Qd2?
- Keys
- 1.Qe3!
- 1...Qf8+
- 2.gxf8Q#
- 2.gxf8S#
- 2.gxf8B#
- 2.gxf8R#
- 1...Qxg7
- 2.Bxg7#
- 1...Qxh8
- 2.gxh8Q#
- 2.gxh8B#
- 1...fxe3
- 2.Rf1#
- 1...g4
- 2.Qxf4#
- 1...f3
- 2.Qxf3#
- 1...Qh7
- 2.g8S#
- 1...Qd8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Qe8
- 2.g8Q#
- 2.g8S#
- 2.g8B#
- 2.g8R#
- 1...Ba6
- 2.Sxd7#
- 1...Bb7
- 2.Sxd7#
- 1...b3
- 2.Qc3#
- 1...c4
- 2.Qd4#
- 1...Qf8+
- 1.Qe3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Q(j);OGATE::P=S
- Q(j);OGATE,P_SPINQ(j),XP(I)::B(K),XQ(j)
- Q(j);OGATE,XB(K)::PXQ(j)=Q
- B(i);N_GUARD::S(J),XP(g)
- P(a);N_GUARD::QAB(B)
- P(d);N_GUARD::QAR2(B),XP(b)
- Tries
- Try
- Q(B);
- Vars
- Q(j);OGATE,P_SPINQ(j),XP(I)::B(K),XQ(j)
- Q(j);OGATE,XB(K)::PXQ(j)=Q
- P(d);N_GUARD::QAR2(B),XP(b)
- Q(j);OGATE::P=S
- B(i);N_GUARD::S(J),XP(g)
- P(a);N_GUARD::QAB(B)
- P(c);N_GUARD::QAB(B)
- Refutation
- P(b);
- Try
- Q(B);
- Threat
- P(D)
- Refutation
- P(d);
- Try
- Q(B);XP(c)
- Threat
- DUALS(3)
- Refutation
- P(e);XQ(B)
- Try
- P(C);
- Threat
- QAB(B)
- Vars
- P(d);N_GUARD::QAR2(B),XP(b)
- Refutation
- P(c);
- Try
- P(H);
- Threat
- PXQ(j)=S
- Vars
- Q(j);OGATE,XP(H)::P=S
- Q(j);OGATE,XB(K)::PXQ(j)=Q
- P(d);N_GUARD::QAR2(B),XP(b)
- Refutation
- Q(j);P_SPINQ(j),XP(I)
- Try
- Actual
- Q(B);
- Vars
- Q(j);OGATE,P_SPINQ(j),XP(I)::B(K),XQ(j)
- Q(j);OGATE,XB(K)::PXQ(j)=Q
- P(b);OGATEB,XQ(B)::R(A)
- P(d);N_GUARD::QAR2(B),XP(b)
- P(b);OGATEB::QAR(B),XP(b)
- Q(j);OGATE::P=S
- B(i);N_GUARD::S(J),XP(g)
- P(a);N_GUARD::QAB(B)
- P(c);N_GUARD::QAB(B)
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).