MESON Chess Problem Database
Problem Display
PID: 253359 (2bNrb2/1RP1k1pR/2P5/B2p1nP1/3N1P2/8/4P3/1K2Q3 w - - 0 1)
Slater, George James
4th Prize, English Mechanic and World of Science, 1888
(First published on Fri Jul 20 1888)
#2
12 + 7
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Be6
- 2.c8S#
- 1...Bxb7
- 2.Sxf5#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Kd6
- Tries
- 1.Ka1?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Kc1?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Ka2?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Kb2?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Bb6?
- 1...Kd6
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bc5#
- 2.Qb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bc5#
- 2.Qb4#
- 1...Sg3
- 2.Bc5#
- 2.Qb4#
- 1...Sh4
- 2.Bc5#
- 2.Qb4#
- 1...Sh6
- 2.Bc5#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Ra7?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Ba6
- 2.Sxf5#
- 2.c8S#
- 1...Be6
- 2.c8S#
- 1...Bb7
- 2.Sxf5#
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Rxg7+?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Sxg7
- 2.Bb4#
- 2.Qb4#
- 1...Bxg7!
- 1...Kd6
- 1.Qd2?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Qf2?
- 1...Kd6
- 2.Bb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 1...Sg3
- 2.Bb4#
- 1...Sh4
- 2.Bb4#
- 1...Sh6
- 2.Bb4#
- 1...Sd6!
- 1...Kd6
- 1.Qc3?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 2.Qa3#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 2.Qa3#
- 2.Qc5#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sd6!
- 1...Kd6
- 1.Qg3?
- 1...Kd6
- 2.Bb4#
- 2.Qa3#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxg3
- 2.Bb4#
- 1...Sxd4
- 2.Bb4#
- 2.Qa3#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 1...Sh4
- 2.Bb4#
- 2.Qa3#
- 1...Sh6
- 2.Bb4#
- 2.Qa3#
- 1...Sd6!
- 1...Kd6
- 1.Qc1?
- 1...Kd6
- 2.Bb4#
- 2.Qa3#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 2.Qa3#
- 2.Qc5#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sg3
- 2.Bb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sh4
- 2.Bb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sh6
- 2.Bb4#
- 2.Qa3#
- 2.Qc5#
- 1...Sd6!
- 1...Kd6
- 1.Qd1?
- 1...Kd6
- 2.Bb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 1...Sg3
- 2.Bb4#
- 1...Sh4
- 2.Bb4#
- 1...Sh6
- 2.Bb4#
- 1...Sd6!
- 1...Kd6
- 1.Qf1?
- 1...Kd6
- 2.Bb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 1...Sg3
- 2.Bb4#
- 1...Sh4
- 2.Bb4#
- 1...Sh6
- 2.Bb4#
- 1...Sd6!
- 1...Kd6
- 1.Qg1?
- 1...Kd6
- 2.Bb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 1...Sg3
- 2.Bb4#
- 1...Sh4
- 2.Bb4#
- 1...Sh6
- 2.Bb4#
- 1...Sd6!
- 1...Kd6
- 1.Qh1?
- 1...Kd6
- 2.Bb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 1...Sg3
- 2.Bb4#
- 1...Sh4
- 2.Bb4#
- 1...Sh6
- 2.Bb4#
- 1...Sd6!
- 1...Kd6
- 1.e3?
- 1...Kd6
- 2.Bb4#
- 2.Qb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxe3
- 2.Bb4#
- 2.Qb4#
- 1...Sxd4
- 2.Bb4#
- 2.Qb4#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Sg3
- 2.Bb4#
- 2.Qb4#
- 1...Sh4
- 2.Bb4#
- 2.Qb4#
- 1...Sh6
- 2.Bb4#
- 2.Qb4#
- 1...Sd6!
- 1...Kd6
- 1.Ka1?
- Keys
- 1.Qh4!
- 1...Kd6
- 2.Bb4#
- 1...Rxd8
- 2.cxd8Q#
- 1...Bxb7
- 2.Sxf5#
- 1...Sxd4
- 2.Bb4#
- 1...Sxh4
- 2.Bb4#
- 1...Sd6
- 2.g6#
- 1...Be6
- 2.c8S#
- 1...Bd7
- 2.c8S#
- 1...Se3
- 2.Bb4#
- 1...Sg3
- 2.Bb4#
- 1...Sh6
- 2.Bb4#
- 1...Kd6
- 1.Qh4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 0
- Sets
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);OGATE::P=S
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- K(A);P-FLIGHT
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- K(A);S_FLIGHT
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- K(A);P-FLIGHT
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- B(F);
- Vars
- K(c);N_SPINP(d),S_CUTS(b),S_FLIGHT::QAB(B)
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- R(I);
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- R(K);CHECK,XP(d)
- Refutation
- B(g);XR(K)
- Try
- Q(B);
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- K(c);N_SPINP(d),S_CUTS(b),S_FLIGHT::B(F)
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- S(b);N_GUARD,XS(D)::B(F)
- B(e);OGATE::P=S
- S(b);N_GUARD::B(F)
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- S(b);N_GUARD,XQ(B)::B(F)
- B(e);OGATE::P=S
- S(b);N_GUARD::B(F)
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- K(c);N_SPINP(d),S_CUTS(b),S_FLIGHT::B(F)
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- S(b);N_GUARD,XS(D)::B(F)
- B(e);OGATE::P=S
- S(b);N_GUARD::B(F)
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- K(c);N_SPINP(d),S_CUTS(b),S_FLIGHT::B(F)
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- S(b);N_GUARD,XS(D)::B(F)
- B(e);OGATE::P=S
- S(b);N_GUARD::B(F)
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- K(c);N_SPINP(d),S_CUTS(b),S_FLIGHT::B(F)
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- S(b);N_GUARD,XS(D)::B(F)
- B(e);OGATE::P=S
- S(b);N_GUARD::B(F)
- Refutation
- S(b);
- Try
- Q(B);
- Vars
- K(c);N_SPINP(d),S_CUTS(b),S_FLIGHT::B(F)
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- S(b);N_GUARD,XS(D)::B(F)
- B(e);OGATE::P=S
- S(b);N_GUARD::B(F)
- Refutation
- S(b);
- Try
- P(C);
- Vars
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- B(e);OGATE::P=S
- Refutation
- S(b);
- Try
- Actual
- Q(B);
- Vars
- K(c);N_SPINP(d),S_CUTS(b),S_FLIGHT::B(F)
- R(f);OGATE,XS(L)::PXR(f)=Q
- B(e);N_GUARD,XR(I)::S(D),XS(b)
- S(b);N_GUARD,XS(D)::B(F)
- S(b);N_GUARD,XQ(B)::B(F)
- S(b);N_GUARD,SBLOCK::QAB(B)+P(G)
- B(e);OGATE::P=S
- S(b);N_GUARD::B(F)
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).