MESON Chess Problem Database
Problem Display
PID: 71564 (R3nk2/2Pnb1Rp/1p1Q3P/6N1/b4p1K/B3q1pp/8/4r3 w - - 0 1)
Ceder, Sven Ture
3rd Prize, Schackvarlden, 1941
#2
8 + 12
SOLUTION
- SOUND
- Sets
- 1...Bxd6
- 2.Sxh7#
- 1...Se5
- 2.Qxe7#
- 1...Sf6
- 2.Qxf6#
- 1...Bxd6
- Tries
- 1.Qxf4+?
- 1...Sf6
- 2.Sxh7#
- 2.Qxf6#
- 1...Qxf4+!
- 1...Sf6
- 1.Qd5?
- threat
- 2.Rg8#
- 2.Qf7#
- 2.Qg8#
- 1...Bxa3
- 2.Sxh7#
- 2.Qf7#
- 2.Qg8#
- 1...Qb3
- 2.Rg8#
- 1...Bb3
- 2.Rg8#
- 1...Bb4
- 2.Sxh7#
- 2.Qf7#
- 2.Qg8#
- 1...Bc5
- 2.Sxh7#
- 2.Qf7#
- 2.Qg8#
- 1...Bd6
- 2.Sxh7#
- 2.Qf7#
- 2.Qg8#
- 1...Se5
- 2.Bxe7#
- 2.Rg8#
- 2.Qg8#
- 1...Sf6
- 2.Qf7#
- 1...Qe6!
- threat
- 1.Qe6?
- threat
- 2.Bxe7#
- 2.Rg8#
- 2.Qf7#
- 2.Qg8#
- 1...Qxa3
- 2.Rg8#
- 2.Qf7#
- 2.Qg8#
- 1...Bxa3
- 2.Sxh7#
- 2.Rg8#
- 2.Rxe8#
- 2.Qf7#
- 2.Qg8#
- 1...Qc5
- 2.Rg8#
- 2.Qf7#
- 2.Qg8#
- 1...Qb3
- 2.Bxe7#
- 2.Rg8#
- 1...Bb3
- 2.Bxe7#
- 2.Rg8#
- 1...Bb4
- 2.Sxh7#
- 2.Rg8#
- 2.Rxe8#
- 2.Qf7#
- 2.Qg8#
- 1...Bc5
- 2.Sxh7#
- 2.Rg8#
- 2.Rxe8#
- 2.Qf7#
- 2.Qg8#
- 1...Bd6
- 2.Sxh7#
- 2.Bxd6#
- 2.Rg8#
- 2.Rxe8#
- 2.Qf7#
- 2.Qg8#
- 1...Sc5
- 2.Rg8#
- 2.Qf7#
- 2.Qg8#
- 1...Se5
- 2.Bxe7#
- 2.Rg8#
- 2.Qg8#
- 2.Qxe7#
- 1...Sf6
- 2.Bxe7#
- 2.Qf7#
- 2.Qxf6#
- 1...Qxe6!
- threat
- 1.Qg6?
- threat
- 2.Rf7#
- 2.Rg8#
- 2.Rxe8#
- 2.Qf7#
- 2.Qxe8#
- 1...Bxa3
- 2.Sxh7#
- 2.Rf7#
- 2.Qf7#
- 1...Qb3
- 2.Rxe8#
- 2.Qxe8#
- 1...Qe6
- 2.Rxe8#
- 2.Qxe8#
- 1...Bb3
- 2.Rxe8#
- 2.Qxe8#
- 1...Bb4
- 2.Sxh7#
- 2.Rf7#
- 2.Qf7#
- 1...Bc5
- 2.Sxh7#
- 2.Rf7#
- 2.Qf7#
- 1...Bd6
- 2.Sxh7#
- 2.Rf7#
- 2.Qf7#
- 1...Sc5
- 2.Rf7#
- 2.Rg8#
- 2.Qf7#
- 1...Se5
- 2.Bxe7#
- 2.Rg8#
- 1...Sf6
- 2.Rf7#
- 2.Qf7#
- 2.Qxf6#
- 1...Sb8
- 2.Rf7#
- 2.Rg8#
- 2.Qf7#
- 1...hxg6!
- threat
- 1.Qxd7?
- threat
- 2.Rxe8#
- 2.Qf5#
- 1...Qxa3
- 2.Rxe8#
- 1...Bxa3
- 2.Sxh7#
- 2.Qf5#
- 2.Qf7#
- 1...Qd4
- 2.Rxe8#
- 1...Qc5
- 2.Rxe8#
- 1...Qb3
- 2.Rxe8#
- 1...Qc3
- 2.Rxe8#
- 1...Qd3
- 2.Rxe8#
- 1...Qe4
- 2.Rxe8#
- 1...Qe5
- 2.Rxe8#
- 1...Qe6
- 2.Rxe8#
- 1...Bc2
- 2.Rxe8#
- 2.Qxe8#
- 1...Bb3
- 2.Rxe8#
- 2.Qxe8#
- 1...Bb4
- 2.Sxh7#
- 2.Qf5#
- 2.Qf7#
- 1...Bc5
- 2.Sxh7#
- 2.Qf5#
- 2.Qf7#
- 1...Bd6
- 2.Sxh7#
- 2.Qf5#
- 2.Qf7#
- 1...Bxd7!
- threat
- 1.c8R?
- threat
- 2.Rxe8#
- 1...Bxd6
- 2.Sxh7#
- 1...Se5
- 2.Qxe7#
- 1...Sf6
- 2.Qxf6#
- 1...Sb8
- 2.Qf6#
- 1...Sc5!
- threat
- 1.Qxf4+?
- Keys
- 1.c8Q!
- threat
- 2.Qxe8#
- 1...Bxd6
- 2.Sxh7#
- 1...Sc5
- 2.Qf5#
- 1...Se5
- 2.Qxe7#
- 1...Sf6
- 2.Qxf6#
- 1...Sb8
- 2.Qf6#
- threat
- 1.c8Q!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(i);N_PINS(C),XQ(D)::S(C),XP(j)
- S(h);S_CUTQ(b)::QAB1(D),XB(i)
- S(h);N_GUARD,N_PINS(C)::QAR2(D),XS(h)
- Tries
- Try
- Q(D);CHECK,XP(f)
- Refutation
- Q(b);CHECK,XQ(D)
- Try
- Q(D);
- Threat
- DUALS(3)
- Vars
- Q(b);::R1(G)
- B(e);::R1(G)
- S(h);N_PINS(C)::QAR1(D)
- Refutation
- Q(b);
- Try
- Q(D);
- Threat
- DUALS(4)
- Refutation
- Q(b);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(5)
- Refutation
- P(j);XQ(D)
- Try
- Q(D);XS(h)
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINB(i),XB(A)::R1(H),XS(k)
- Q(b);::R1(H),XS(k)
- Q(b);N_SPINB(i)::R1(H),XS(k)
- Refutation
- B(e);XQ(D)
- Try
- P(F);
- Threat
- R1(F),XS(k)
- Vars
- B(i);N_PINS(C),XQ(D)::S(C),XP(j)
- S(h);S_CUTQ(b)::QAB1(D),XB(i)
- S(h);N_GUARD,N_PINS(C)::QAR2(D),XS(h)
- S(h);N_GUARD::QAR2(D)
- Refutation
- S(h);
- Try
- Actual
- P(F);
- Threat
- QAR1(F),XS(k)
- Vars
- B(i);N_PINS(C),XQ(D)::S(C),XP(j)
- S(h);OGATE::QAR(F)
- S(h);S_CUTQ(b)::QAB1(D),XB(i)
- S(h);N_GUARD,N_PINS(C)::QAR2(D),XS(h)
- S(h);N_GUARD::QAR2(D)
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).