MESON Chess Problem Database
Problem Display
PID: 11277 (4r3/bQ5B/2rP1P1R/1b1Pk1P1/R4NP1/B1n1P3/3P3K/8 w - - 0 1)
Larsen, Karl Adolf Koefoed
1st Prize, Skakbladet, 1937
#2
14 + 6
| 2048 | Tuxens skakopgaver (Leif C Schmidt) | 1984 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Sd3#
- 1...Ra6
- 2.Sg6#
- 1...Rb6
- 2.Sg6#
- 2.d4#
- 1...Rxd6
- 2.Sg6#
- 1...Rc7
- 2.Sg6#
- 1...Rcc8
- 2.Sg6#
- 1...Re7
- 2.Qxe7#
- 1...Ra8
- 2.Qe7#
- 1...Rb8
- 2.Qe7#
- 1...Rec8
- 2.Qe7#
- 1...Rd8
- 2.Qe7#
- 1...Rf8
- 2.Qe7#
- 1...Rg8
- 2.Qe7#
- 1...Rh8
- 2.Qe7#
- 1...Bb8
- 2.d4#
- 1...Sb1
- 2.Re4#
- 1...Sd1
- 2.Re4#
- 1...Sa2
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sxd5
- 2.Re4#
- 1...Rc4
- Tries
- 1.Qd7?
- threat
- 2.Qf5#
- 2.Qxe8#
- 1...Rxd6
- 2.Bxd6#
- 2.Qf5#
- 2.Qxd6#
- 1...Sxd5
- 2.Sg6#
- 2.Re4#
- 2.Qf5#
- 1...Rc4
- 2.Qf5#
- 1...Rc5
- 2.d4#
- 1...Ra6
- 2.Qf5#
- 1...Rb6
- 2.Qf5#
- 2.d4#
- 1...Rc7
- 2.Qf5#
- 1...Rcc8
- 2.Qf5#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qf5#
- 2.Qxe7#
- 1...Ra8
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rb8
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rec8
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rd8
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rf8
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rg8
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 1...Rh8
- 2.Qf5#
- 2.Qe6#
- 2.Qe7#
- 1...Bd3
- 2.Qxe8#
- 1...Bc5!
- threat
- 1.Qd7?
- Keys
- 1.f7!
- threat
- 2.fxe8Q#
- 2.fxe8R#
- 1...Rxd6
- 2.Bxd6#
- 1...Bxa4
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bxe3
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sxa4
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sxd5
- 2.Re4#
- 1...Rc4
- 2.Sd3#
- 1...Rc5
- 2.d4#
- 1...Ra6
- 2.Sg6#
- 1...Rb6
- 2.Sg6#
- 2.d4#
- 1...Rc7
- 2.Sg6#
- 1...Rcc8
- 2.Sg6#
- 1...Re6
- 2.Rxe6#
- 1...Re7
- 2.Qxe7#
- 1...Ra8
- 2.Re6#
- 2.Qe7#
- 1...Rb8
- 2.Re6#
- 2.Qe7#
- 1...Rec8
- 2.Re6#
- 2.Qe7#
- 1...Rd8
- 2.Re6#
- 2.Qe7#
- 1...Rf8
- 2.Re6#
- 2.Qe7#
- 1...Rg8
- 2.Re6#
- 2.Qe7#
- 1...Rh8
- 2.Re6#
- 2.Qe7#
- 1...Bf1
- 2.fxe8Q#
- 2.fxe8R#
- 1...Be2
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bd3
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bc4
- 2.fxe8Q#
- 2.fxe8R#
- 1...Ba6
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bd4
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bc5
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bb6
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bb8
- 2.d4#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sb1
- 2.Re4#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sd1
- 2.Re4#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sa2
- 2.Re4#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Se2
- 2.Re4#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Se4
- 2.Rxe4#
- 2.fxe8Q#
- 2.fxe8R#
- threat
- 1.f7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 13
- Sets
- R(d);S_CUTB(b)::S(F)
- R(d);::S(F)
- R(d);XP(J)::S(F)
- R(f);N_GUARD::QAR2(M),XR(f)
- R(f);N_GUARD::QAR2(M)
- B(e);N_GUARD::P(A)
- S(a);N_GUARD::R1(E)
- S(a);N_GUARD::R1(E),XS(a)
- S(a);N_GUARD,XP(H)::R1(E)
- Tries
- Try
- Q(M);
- Threat
- DUALS(2)
- Vars
- R(d);::QAR1(M)
- R(d);S_CUTB(e)::P(A)
- R(f);N_GUARD::QAR1(M),XR(f)
- B(b);::QAR(M),XR(f)
- Refutation
- B(e);
- Try
- Actual
- P(K);
- Threat
- PXR(f)=Q
- Vars
- R(d);OGATE,XP(J)::B(C),XR(d)
- B(b);XR(E)::PXR(f)=Q
- B(e);XP(D)::PXR(f)=Q
- S(a);XR(E)::PXR(f)=Q
- S(a);N_GUARD,XP(H)::R1(E)
- R(d);S_CUTB(b)::S(F)
- R(d);S_CUTB(e)::P(A)
- R(d);::S(F)
- R(f);N_GUARD::R1(L),XR(f)
- R(f);N_GUARD::QAR2(M),XR(f)
- B(b);::PXR(f)=Q
- B(e);::PXR(f)=Q
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).