MESON Chess Problem Database
Problem Display
PID: 76429 (1NBk2n1/PK3P2/5Pb1/3P4/3n1q1B/4P3/2Q5/8 w - - 0 1)
Cafferata, Louis William
The Tablet, 1929
(First published on Sat Nov 30 1929)
#2
10 + 5
| 15239 | Valois Notebooks | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Qxe3
- 2.Qc7#
- 1...Qg5
- 2.Qc7#
- 1...Qh6
- 2.Qc7#
- 1...Qc7+
- 2.Qxc7#
- 1...Qf1
- 2.Qc7#
- 1...Qf2
- 2.Qc7#
- 1...Qf3
- 2.Qc7#
- 1...Qe4
- 2.Qc7#
- 1...Qg4
- 2.Qc7#
- 1...Qxh4
- 2.Qc7#
- 1...Qf5
- 2.Qc7#
- 1...Qxf6
- 2.Qc7#
- 1...Bxc2
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Bd3
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Be4
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Bf5
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Bh7
- 2.f8Q#
- 2.f8R#
- 1...Sxc2
- 2.Sc6#
- 1...Se2
- 2.Sc6#
- 1...Sb3
- 2.Sc6#
- 1...Sf3
- 2.Sc6#
- 1...Sb5
- 2.Sc6#
- 1...Sf5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Se6
- 2.Sc6#
- 1...Se7
- 2.fxe7#
- 1...Qxe3
- Tries
- 1.Bh3?
- threat
- 2.Qc8#
- 1...Qc7+
- 2.Qxc7#
- 1...Qxb8+
- 2.axb8Q#
- 2.axb8R#
- 1...Qxf6
- 2.Qc7#
- 1...Bxc2
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Sxc2
- 2.Sc6#
- 1...Qg4
- 2.Qc7#
- 1...Qf5
- 2.Qc7#
- 1...Bf5
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Sc6
- 2.Sxc6#
- 1...Se7
- 2.fxe7#
- 1...Sxf6!
- threat
- 1.Bg4?
- threat
- 2.Qc8#
- 1...Qc7+
- 2.Qxc7#
- 1...Qxb8+
- 2.axb8Q#
- 2.axb8R#
- 1...Qxg4
- 2.Qc7#
- 1...Qxf6
- 2.Qc7#
- 1...Bxc2
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Sxc2
- 2.Sc6#
- 1...Qf5
- 2.Qc7#
- 1...Bf5
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Sc6
- 2.Sxc6#
- 1...Se7
- 2.fxe7#
- 1...Sxf6!
- threat
- 1.Be6?
- threat
- 2.Qc8#
- 1...Qc7+
- 2.Qxc7#
- 1...Qxb8+
- 2.axb8Q#
- 2.axb8R#
- 1...Qxf6
- 2.Qc7#
- 1...Bxc2
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Sxc2
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Se7
- 2.fxe7#
- 1...Sxf6!
- threat
- 1.Qc6?
- threat
- 2.Qd7#
- 2.Qe8#
- 1...Qc7+
- 2.Qxc7#
- 1...Qxe3
- 2.Qd7#
- 2.Qb6#
- 2.Qd6#
- 2.Qc7#
- 1...Bxf7
- 2.Qd7#
- 1...Sxc6
- 2.Sxc6#
- 1...Qe5
- 2.Qd7#
- 1...Qd6
- 2.Qe8#
- 2.Qxd6#
- 1...Qe4
- 2.Qd7#
- 2.Qb6#
- 2.Qd6#
- 2.Qc7#
- 1...Qg4
- 2.Qe8#
- 2.Qb6#
- 2.Qc7#
- 1...Qf5
- 2.Qe8#
- 2.Qb6#
- 2.Qc7#
- 1...Bf5
- 2.Qe8#
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Qxb8+!
- threat
- 1.exf4?
- threat
- 2.Qc7#
- 1...Bxc2
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Sxc2
- 2.Sc6#
- 1...Sb5
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Se6
- 2.Sc6#
- 1...Bxf7!
- threat
- 1.Bh3?
- Keys
- 1.Bf5!
- threat
- 2.Qc8#
- 1...Qc7+
- 2.Qxc7#
- 1...Qxb8+
- 2.axb8Q#
- 2.axb8R#
- 1...Qxf5
- 2.Qc7#
- 1...Bxf5
- 2.fxg8Q#
- 2.fxg8R#
- 2.f8Q#
- 2.f8R#
- 1...Sxc2
- 2.Sc6#
- 1...Sxf6
- 2.Bxf6#
- 1...Sc6
- 2.Sxc6#
- 1...Se7
- 2.fxe7#
- threat
- 1.Bf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 16
- Sets
- Q(b);N_GUARD,XP(B)::QAB1(A)
- Q(b);N_GUARD::QAB1(A)
- Q(b);CHECK,N_GUARD::QAB1(A),XQ(b)
- Q(b);N_GUARD,P_PINP(D)::QAB1(A)
- Q(b);N_GUARD,XB(C)::QAB1(A)
- Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAB1(A)
- B(c);N_GUARD::P=Q
- S(a);N_GUARD,XQ(A)::S(I)
- S(a);N_GUARD::S(I)
- S(a);N_GUARD::S(I),XS(a)
- S(e);OGATE::P(E),XS(e)
- Tries
- Try
- B(J);
- Threat
- QAR1(A)
- Vars
- Q(b);CHECK,N_GUARD::QAB1(A),XQ(b)
- Q(b);CHECK,OGATE,XS(I)::PXQ(b)=Q
- Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAB1(A)
- S(a);N_GUARD,XQ(A)::S(I)
- Q(b);N_GUARD::QAB1(A)
- S(a);N_GUARD::S(I),XS(a)
- S(e);OGATE::P(E),XS(e)
- Refutation
- S(e);P_SPINS(e),XP(E)
- Try
- B(J);
- Threat
- QAR1(A)
- Vars
- Q(b);CHECK,N_GUARD::QAB1(A),XQ(b)
- Q(b);CHECK,OGATE,XS(I)::PXQ(b)=Q
- Q(b);N_GUARD,XB(J)::QAB1(A)
- Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAB1(A)
- S(a);N_GUARD,XQ(A)::S(I)
- Q(b);N_GUARD::QAB1(A)
- S(a);N_GUARD::S(I),XS(a)
- S(e);OGATE::P(E),XS(e)
- Refutation
- S(e);P_SPINS(e),XP(E)
- Try
- B(J);
- Threat
- QAR1(A)
- Vars
- Q(b);CHECK,N_GUARD::QAB1(A),XQ(b)
- Q(b);CHECK,OGATE,XS(I)::PXQ(b)=Q
- Q(b);N_GUARD,P_SPINQ(b),XP(E)::QAB1(A)
- S(a);N_GUARD,XQ(A)::S(I)
- S(a);N_GUARD::S(I),XS(a)
- S(e);OGATE::P(E),XS(e)
- Refutation
- S(e);P_SPINS(e),XP(E)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,N_GUARD::QAB1(A),XQ(b)
- B(c);XP(H)::QAR1(A)
- S(a);XQ(A)::S(I),XS(a)
- Q(b);::QAR1(A)
- Refutation
- Q(b);CHECK,XS(I)
- Try
- P(B);XQ(b)
- Threat
- QAB1(A)
- Vars
- S(a);N_GUARD,XQ(A)::S(I)
- S(a);N_GUARD::S(I)
- S(a);N_GUARD::S(I),XS(a)
- Refutation
- B(c);XP(H)
- Try
- Actual
- B(J);
- Threat
- QAR1(A)
- Vars
- Q(b);CHECK,N_GUARD::QAB1(A),XQ(b)
- Q(b);CHECK,OGATE,XS(I)::PXQ(b)=Q
- Q(b);N_GUARD,XB(J)::QAB1(A)
- S(a);N_GUARD,XQ(A)::S(I)
- S(e);OGATE,P_SPINS(e),XP(E)::B(C),XS(e)
- S(a);N_GUARD::S(I),XS(a)
- S(e);OGATE::P(E),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).