MESON Chess Problem Database
Problem Display
PID: 4804 (8/3p4/1K2P1p1/2B1k1Pb/1N1N1b1Q/3B2Pn/5P2/8 w - - 0 1)
Blake, Percy Francis
Pictorial World, 1891
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Bc1
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bxg3
- 2.Qe4#
- 1...Bd1
- 2.Qh8#
- 1...Be2
- 2.Qh8#
- 1...Bf3
- 2.Qh8#
- 1...Bg4
- 2.Qh8#
- 1...Sg1
- 2.Qxf4#
- 2.gxf4#
- 1...Sxf2
- 2.Qxf4#
- 2.gxf4#
- 1...Sxg5
- 2.Qxf4#
- 1...dxe6
- 2.Sdc6#
- 1...d5
- 2.Sbc6#
- 1...Bc1
- Tries
- 1.Bf8?
- 1...Kxd4
- 2.Bg7#
- 1...Bxg3
- 2.Qe4#
- 1...Sxf2
- 2.Qxf4#
- 1...Sxg5
- 2.Qxf4#
- 1...dxe6
- 2.Sdc6#
- 1...d6
- 2.Bg7#
- 1...Bc1
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bd1
- 2.Qh8#
- 1...Be2
- 2.Qh8#
- 1...Bf3
- 2.Qh8#
- 1...Bg4
- 2.Qh8#
- 1...Sg1
- 2.Qxf4#
- 1...d5
- 2.Sbc6#
- 1...Bxg5!
- 1...Kxd4
- 1.exd7?
- 1...Bxg3
- 2.Qe4#
- 1...Sxf2
- 2.Qxf4#
- 2.gxf4#
- 1...Sxg5
- 2.Qxf4#
- 1...Bc1
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bd1
- 2.Qh8#
- 1...Be2
- 2.Qh8#
- 1...Bf3
- 2.Qh8#
- 1...Bg4
- 2.Qh8#
- 1...Sg1
- 2.Qxf4#
- 2.gxf4#
- 1...Bxg5!
- 1...Bxg3
- 1.e7?
- threat
- 2.e8Q#
- 2.e8R#
- 1...Bxg3
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Sxf2
- 2.Qxf4#
- 2.gxf4#
- 2.e8Q#
- 2.e8R#
- 1...Sxg5
- 2.Qxf4#
- 1...d6
- 2.e8Q#
- 2.e8R#
- 1...Bc1
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Bd2
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Be3
- 2.Qe4#
- 2.e8Q#
- 2.e8R#
- 1...Bd1
- 2.Qh8#
- 2.e8Q#
- 2.e8R#
- 1...Be2
- 2.Qh8#
- 2.e8Q#
- 2.e8R#
- 1...Bf3
- 2.Qh8#
- 2.e8Q#
- 2.e8R#
- 1...Bg4
- 2.Qh8#
- 1...Sg1
- 2.Qxf4#
- 2.gxf4#
- 2.e8Q#
- 2.e8R#
- 1...d5
- 2.Sbc6#
- 2.e8Q#
- 2.e8R#
- 1...Bxg5!
- threat
- 1.Bf8?
- Keys
- 1.Be7!
- 1...Kxd4
- 2.Bf6#
- 1...Bxg3
- 2.Qe4#
- 1...Bxg5
- 2.Qe4#
- 1...Sxf2
- 2.Qxf4#
- 1...Sxg5
- 2.Qxf4#
- 1...dxe6
- 2.Sdc6#
- 1...d6
- 2.Bf6#
- 1...Bc1
- 2.Qe4#
- 1...Bd2
- 2.Qe4#
- 1...Be3
- 2.Qe4#
- 1...Bd1
- 2.Qh8#
- 1...Be2
- 2.Qh8#
- 1...Bf3
- 2.Qh8#
- 1...Bg4
- 2.Qh8#
- 1...Sg1
- 2.Qxf4#
- 1...d5
- 2.Sbc6#
- 1...Kxd4
- 1.Be7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(b);OGATE::QAR1(F)
- B(b);OGATE,XP(C)::QAR1(F)
- B(d);OGATE::QAB(F)
- S(a);N_GUARD,XP(H)::QAB1(F),XB(b)
- P(f);N_GUARD,SBLOCK,XP(J)::S(E)
- P(f);N_GUARD,SBLOCK::S(D)
- Tries
- Try
- B(G);
- Vars
- K(c);P_SPINB(b),S_FLIGHT,XS(E)::B(G)
- B(b);OGATE,XP(C)::QAR1(F)
- S(a);N_GUARD,XP(A)::QAB1(F),XB(b)
- S(a);N_GUARD,XP(H)::QAB1(F),XB(b)
- P(f);N_GUARD,SBLOCK,XP(J)::S(E)
- P(f);SBLOCK::B(G)
- B(b);OGATE::QAR1(F)
- B(b);OGATE,P_PINS(E)::QAR1(F)
- B(d);OGATE::QAB(F)
- S(a);N_GUARD::QAB1(F),XB(b)
- P(f);N_GUARD,SBLOCK::S(D)
- Refutation
- B(b);XP(H)
- Try
- P(J);XP(f)
- Vars
- B(b);OGATE,XP(C)::QAR1(F)
- S(a);N_GUARD,XP(H)::QAB1(F),XB(b)
- B(b);OGATE::QAR1(F)
- B(d);OGATE::QAB(F)
- Refutation
- B(b);XP(H)
- Try
- P(J);
- Threat
- P=Q
- Vars
- S(a);N_GUARD,XP(H)::QAB1(F),XB(b)
- P(f);::P=Q
- B(d);OGATE::QAB(F)
- Refutation
- B(b);XP(H)
- Try
- Actual
- B(G);
- Vars
- K(c);P_SPINB(b),S_FLIGHT,XS(E)::B(G)
- B(b);OGATE,XP(C)::QAR1(F)
- B(b);OGATE,XP(H)::QAR1(F)
- S(a);N_GUARD,XP(A)::QAB1(F),XB(b)
- S(a);N_GUARD,XP(H)::QAB1(F),XB(b)
- P(f);N_GUARD,SBLOCK,XP(J)::S(E)
- P(f);SBLOCK::B(G)
- B(b);OGATE::QAR1(F)
- B(b);OGATE,P_PINS(E)::QAR1(F)
- B(d);OGATE::QAB(F)
- S(a);N_GUARD::QAB1(F),XB(b)
- P(f);N_GUARD,SBLOCK::S(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).