MESON Chess Problem Database
Problem Display
PID: 198475 (KB2R1N1/P4P1b/3br1P1/1p2kp1Q/2Pp4/4p1P1/R4Nr1/8 w - - 0 1)
Godal, Ivar
Stella Polaris, 1966
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Re7
- 2.Rxe7#
- 1...Rxe8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bc7
- 2.Bxc7#
- 1...Bxb8
- 2.axb8Q#
- 2.axb8B#
- 1...Bxg6
- 2.Qh8#
- 1...Bxg8
- 2.Qh8#
- 1...exf2
- 2.Re2#
- 2.Qe2#
- 1...e2
- 2.Rxe2#
- 2.Qxe2#
- 1...bxc4
- 2.Ra5#
- 1...b4
- 2.Ra5#
- 1...Re7
- Tries
- 1.Qf3?
- threat
- 2.Sd3#
- 2.Qd5#
- 2.Qf4#
- 1...Rxf2
- 2.Qd5#
- 1...Rxg3
- 2.Sd3#
- 1...Rxe8
- 2.Qd5#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bxb8
- 2.Qd5#
- 2.Qf4#
- 2.axb8Q#
- 2.axb8B#
- 1...exf2
- 2.Re2#
- 2.Qe2#
- 2.Qd5#
- 2.Qf4#
- 1...bxc4
- 2.Ra5#
- 1...Re7
- 2.Rxe7#
- 2.Qd5#
- 1...Bc7
- 2.Bxc7#
- 2.Qd5#
- 2.Qf4#
- 1...d3
- 2.Qd5#
- 2.Qxe3#
- 2.Qf4#
- 1...f4
- 2.Qe4#
- 2.Qd5#
- 2.Qh5#
- 2.Qxf4#
- 1...Bxg8!
- threat
- 1.Qh4?
- threat
- 2.Sd3#
- 2.Qf6#
- 2.Qf4#
- 1...Rxg3
- 2.Sd3#
- 1...Rxe8
- 2.Qf6#
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bxb8
- 2.Qf4#
- 2.axb8Q#
- 2.axb8B#
- 1...Bxg8
- 2.Sd3#
- 2.Qh8#
- 1...exf2
- 2.Re2#
- 2.Qf4#
- 1...bxc4
- 2.Ra5#
- 1...Re7
- 2.Rxe7#
- 2.Qf6#
- 2.Qxe7#
- 1...Bc7
- 2.Bxc7#
- 2.Qf4#
- 1...f4
- 2.Qg5#
- 2.Qf6#
- 2.Qxf4#
- 2.Qh5#
- 1...d3
- 2.Sxd3#
- 2.Qf6#
- 2.Qf4#
- 1...Rxf2!
- threat
- 1.f8Q?
- threat
- 2.Bxd6#
- 2.Qxd6#
- 2.Qg7#
- 2.Qhxf5#
- 2.Qfxf5#
- 2.Qf6#
- 1...Rxg3
- 2.Bxd6#
- 2.Qxd6#
- 2.Qhxf5#
- 2.Qfxf5#
- 1...Rxe8
- 2.Qxd6#
- 2.Qhxf5#
- 2.Qfxf5#
- 2.Qf6#
- 2.Qxe8#
- 1...Bxb8
- 2.Qc5#
- 2.Qhxf5#
- 2.axb8Q#
- 2.axb8B#
- 1...Bxg6
- 2.Bxd6#
- 2.Qxd6#
- 2.Qg7#
- 2.Qh8#
- 2.Qf6#
- 1...Bxg8
- 2.Bxd6#
- 2.Qg7#
- 2.Qhxf5#
- 2.Qh8#
- 2.Qfxf5#
- 1...exf2
- 2.Re2#
- 2.Qe2#
- 2.Qhxf5#
- 2.Qfxf5#
- 1...bxc4
- 2.Ra5#
- 2.Qxd6#
- 2.Qhxf5#
- 2.Qfxf5#
- 1...Re7
- 2.Rxe7#
- 2.Qxe7#
- 2.Qhxf5#
- 2.Qfxf5#
- 2.Qf6#
- 1...d3
- 2.Qxd6#
- 2.Qg7#
- 2.Qf6#
- 1...Bc7
- 2.Bxc7#
- 2.Qc5#
- 2.Qhxf5#
- 1...Rxf2!
- threat
- 1.Qf3?
- Keys
- 1.Qh1!
- 1...Rxf2
- 2.Qd5#
- 1...Rxg3
- 2.Sd3#
- 1...Rxe8
- 2.fxe8Q#
- 2.fxe8R#
- 1...Bxb8
- 2.axb8Q#
- 2.axb8B#
- 1...Bxg6
- 2.Qh8#
- 1...Bxg8
- 2.Qh8#
- 1...exf2
- 2.Re2#
- 1...bxc4
- 2.Ra5#
- 1...Re7
- 2.Rxe7#
- 1...Bc7
- 2.Bxc7#
- 1...d3
- 2.Qa1#
- 1...f4
- 2.Qh5#
- 1...Rg1
- 2.Sd3#
- 2.Qd5#
- 1...Rh2
- 2.Sd3#
- 2.Qd5#
- 1...e2
- 2.Rxe2#
- 1...b4
- 2.Ra5#
- 1...Rxf2
- 1.Qh1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(h);OGATEB::R(K),XR(h)
- R(h);N_SPINR(h),OGATE,P_PINB(J),XR(K)::PXR(h)=Q
- B(g);OGATEB::B(J),XB(g)
- B(g);N_SPINB(g),OGATE,XB(J)::PXB(g)=Q
- B(i);OGATE,XP(F)::QAB(E)
- B(i);OGATE,XS(L)::QAB(E)
- P(d);OGATEB,XP(D)::R(A)
- P(d);OGATEB::R(A)
- Tries
- Try
- Q(E);N_PINP(f)
- Threat
- DUALS(3)
- Vars
- R(a);XS(B)::QAR1(E)
- R(a);XP(C)::S(B)
- P(d);OGATEB,XP(D)::R(A)
- Refutation
- B(i);XS(L)
- Try
- Q(E);N_PINP(f)
- Threat
- DUALS(3)
- Vars
- R(a);XP(C)::S(B)
- P(d);OGATEB,XP(D)::R(A)
- Refutation
- R(a);XS(B)
- Try
- P(H);
- Threat
- DUALS(6)
- Refutation
- R(a);XS(B)
- Try
- Actual
- Q(E);N_PINP(f)
- Vars
- R(a);OGATE,XS(B)::QAR1(E)
- R(a);XP(C)::S(B)
- R(h);N_SPINR(h),OGATE,P_PINB(J),XR(K)::PXR(h)=Q
- B(g);N_SPINB(g),OGATE,XB(J)::PXB(g)=Q
- B(i);OGATE,XP(F)::QAB(E)
- B(i);OGATE,XS(L)::QAB(E)
- P(b);OGATEB,XS(B)::R(A)
- P(d);OGATEB,XP(D)::R(A)
- R(h);OGATEB::R(K),XR(h)
- B(g);OGATEB::B(J),XB(g)
- P(c);OGATEB::QAB(E)
- P(f);OGATEB::QAR(E)
- P(b);OGATEB::R(A),XP(b)
- P(d);OGATEB::R(A)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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