MESON Chess Problem Database
Problem Display
PID: 7389 (4R3/4p3/3pNp2/3nrn2/3PkP2/3pPp2/3PNP2/3RKB2 w - - 0 1)
Neyndorff, Luke
StrateGems, 1999
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Sxc3#
- 1...Sdxe3
- 2.Sc3#
- 1...Sb4
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sxd4
- 2.Sg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- Tries
- 1.Bh3?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.Ra8?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.Rb8?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.Rc8?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.Rd8?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.Rf8?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.Rg8?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.Rh8?
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6!
- 1...Sdxe3
- 1.dxe5?
- 1...Sdxe3
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...dxe5
- 2.Sc5#
- 1...fxe5
- 2.Sg5#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sd4
- 2.Sg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Sxf4!
- 1...Sdxe3
- 1.fxe5?
- 1...Sdxe3
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...dxe5
- 2.Sc5#
- 1...fxe5
- 2.Sg5#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Sxd4!
- 1...Sdxe3
- 1.Bh3?
- Keys
- 1.Rxe7!
- 1...Rxe6
- 2.Rxe6#
- 1...Sdxe3
- 2.Sc3#
- 1...Sxf4
- 2.Sc3#
- 1...Sdxe7
- 2.Sc3#
- 1...Sfxe3
- 2.Sg3#
- 1...Sxd4
- 2.Sg3#
- 1...Sfxe7
- 2.Sg3#
- 1...dxe2
- 2.d3#
- 1...fxe2
- 2.Bg2#
- 1...Sc3
- 2.Sxc3#
- 1...Sb4
- 2.Sc3#
- 1...Sb6
- 2.Sc3#
- 1...Sc7
- 2.Sc3#
- 1...Sg3
- 2.Sxg3#
- 1...Sh4
- 2.Sg3#
- 1...Sh6
- 2.Sg3#
- 1...Sg7
- 2.Sg3#
- 1...Rxe6
- 1.Rxe7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD,XP(H)::S(E)
- S(f);N_GUARD::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- Tries
- Try
- B(C);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- R(K);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- R(K);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- R(K);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- R(K);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- R(K);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- R(K);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- R(K);
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- R(e);XS(J)
- Try
- P(H);XR(e)
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- P(g);N_GUARD,XP(H)::S(J)
- P(h);N_GUARD,XP(H)::S(J)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- S(d);XP(I)
- Try
- P(I);XR(e)
- Vars
- S(d);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- P(g);N_GUARD,XP(I)::S(J)
- P(h);N_GUARD,XP(I)::S(J)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(E)
- Refutation
- S(f);XP(H)
- Try
- Actual
- R(K);XP(i)
- Vars
- R(e);OGATE,P_SPINR(e),XS(J)::R(K),XR(e)
- S(d);N_GUARD,XP(G)::S(E)
- S(d);N_GUARD,XP(I)::S(E)
- S(d);N_GUARD,XR(K)::S(E)
- S(f);N_GUARD,XP(G)::S(E)
- S(f);N_GUARD,XP(H)::S(E)
- S(f);N_GUARD,XR(K)::S(E)
- P(a);OGATE,XS(E)::P(D)
- P(b);OGATEB,XS(E)::B(C)
- S(d);N_GUARD::S(E),XS(d)
- S(d);N_GUARD::S(E)
- S(f);N_GUARD::S(E),XS(f)
- S(f);N_GUARD::S(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).