MESON Chess Problem Database
Problem Display
PID: 4981 (1n1N4/1K2Qprp/4B2p/2p1k2n/1p2p1p1/R5P1/4N3/4B3 w - - 0 1)
Blake, Percy Francis
Bradford Observer Budget, 1896-1897
#2
8 + 11
SOLUTION
- SOUND
- Sets
- 1...Rg5
- 2.Sxf7#
- 1...Rg6
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Sxg3
- 2.Bxg3#
- 1...Sf4
- 2.gxf4#
- 1...Sf6
- 2.Qc7#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sd7
- 2.Sc6#
- 1...bxa3
- 2.Bc3#
- 1...b3
- 2.Bc3#
- 1...e3
- 2.Rxe3#
- 1...c4
- 2.Ra5#
- 1...f5
- 2.Bf7#
- 1...Rg5
- Tries
- 1.Kb6?
- 1...Sxg3
- 2.Bxg3#
- 1...bxa3
- 2.Bc3#
- 1...fxe6
- 2.Qxe6#
- 1...e3
- 2.Rxe3#
- 1...Rg5
- 2.Sxf7#
- 1...Rg6
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Sf4
- 2.gxf4#
- 1...Sf6
- 2.Qc7#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...b3
- 2.Bc3#
- 1...c4
- 2.Ra5#
- 1...f5
- 2.Bf7#
- 1...f6
- 2.Qxc5#
- 1...Sd7+!
- 1...Sxg3
- 1.Kxb8?
- threat
- 2.Sc6#
- 1...fxe6
- 2.Qxe6#
- 1...e3
- 2.Rxe3#
- 1...Rg8!
- threat
- 1.Kc8?
- 1...Sxg3
- 2.Bxg3#
- 1...bxa3
- 2.Bc3#
- 1...fxe6
- 2.Qxe6#
- 1...e3
- 2.Rxe3#
- 1...Rg5
- 2.Sxf7#
- 1...Rg6
- 2.Sxf7#
- 1...Sf4
- 2.gxf4#
- 1...Sf6
- 2.Qc7#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sd7
- 2.Sc6#
- 1...b3
- 2.Bc3#
- 1...c4
- 2.Ra5#
- 1...f5
- 2.Bf7#
- 1...f6
- 2.Qxc5#
- 1...Rg8!
- 1...Sxg3
- 1.Bxb4?
- threat
- 2.Bc3#
- 1...cxb4
- 2.Ra5#
- 1...e3
- 2.Rxe3#
- 1...Sc6
- 2.Sxc6#
- 1...fxe6!
- threat
- 1.Bd5+?
- 1...Kf5
- 2.Bxe4#
- 1...Kxd5!
- 1...Kf5
- 1.Rc3?
- threat
- 2.Rxc5#
- 1...bxc3
- 2.Bxc3#
- 1...e3
- 2.Rxe3#
- 1...Sf4
- 2.gxf4#
- 1...Sf6
- 2.Qc7#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 1...c4!
- threat
- 1.Ra5?
- threat
- 2.Rxc5#
- 1...Sf4
- 2.gxf4#
- 1...Sf6
- 2.Qc7#
- 1...Sa6
- 2.Sc6#
- 1...Sd7
- 2.Sc6#
- 1...e3!
- threat
- 1.Kb6?
- Keys
- 1.Ka8!
- 1...Sxg3
- 2.Bxg3#
- 1...bxa3
- 2.Bc3#
- 1...fxe6
- 2.Qxe6#
- 1...e3
- 2.Rxe3#
- 1...Rg5
- 2.Sxf7#
- 1...Rg6
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Sf4
- 2.gxf4#
- 1...Sf6
- 2.Qc7#
- 1...Sa6
- 2.Sc6#
- 1...Sc6
- 2.Sxc6#
- 1...Sd7
- 2.Sc6#
- 1...b3
- 2.Bc3#
- 1...c4
- 2.Ra5#
- 1...f5
- 2.Bf7#
- 1...f6
- 2.Qxc5#
- 1...Sxg3
- 1.Ka8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(i);N_GUARD::S(H),XP(h)
- S(f);OGATE,XP(D)::B(A),XS(f)
- S(f);OGATE::P(D),XS(f)
- S(f);SBLOCK::QAB(G)
- S(k);N_GUARD::S(H)
- S(k);N_GUARD::S(H),XS(k)
- P(a);N_GUARD,XR(C)::B(A)
- P(a);N_GUARD::B(A)
- P(b);OGATEB::R(C),XP(b)
- P(d);OGATEB::R(C)
- P(h);P_PINQ(G),SBLOCK::QAR(G)+B(E)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- S(f);OGATE,XP(D)::B(A),XS(f)
- P(a);N_GUARD,XR(C)::B(A)
- P(h);OGATE,P_SPINP(h),XB(E)::QAR1(G),XP(h)
- P(b);OGATEB::R(C),XP(b)
- R(i);N_GUARD::S(H),XP(h)
- R(i);N_GUARD,P_PINB(E)::S(H),XP(h)
- S(f);OGATE::P(D),XS(f)
- S(f);SBLOCK::QAB(G)
- S(k);N_GUARD::S(H)
- S(k);N_GUARD::S(H),XS(k)
- P(a);N_GUARD::B(A)
- P(d);OGATEB::R(C)
- P(h);SBLOCK::QAR(G)+B(E)
- P(h);SBLOCK::QAR2(G),XP(d)
- Refutation
- S(k);CHECK
- Try
- K(F);P-FLIGHT,XS(k)
- Threat
- S(H)
- Vars
- P(h);OGATE,P_SPINP(h),XB(E)::QAR1(G),XP(h)
- P(b);OGATEB::R(C),XP(b)
- Refutation
- R(i);P_PINS(H)
- Try
- K(F);S_FLIGHT
- Vars
- S(f);OGATE,XP(D)::B(A),XS(f)
- P(a);N_GUARD,XR(C)::B(A)
- P(h);OGATE,P_SPINP(h),XB(E)::QAR1(G),XP(h)
- P(b);OGATEB::R(C),XP(b)
- R(i);N_GUARD::S(H),XP(h)
- S(f);OGATE::P(D),XS(f)
- S(f);SBLOCK::QAB(G)
- S(k);N_GUARD::S(H)
- S(k);N_GUARD::S(H),XS(k)
- P(a);N_GUARD::B(A)
- P(d);OGATEB::R(C)
- P(h);SBLOCK::QAR(G)+B(E)
- P(h);SBLOCK::QAR2(G),XP(d)
- Refutation
- R(i);P_PINS(H)
- Try
- B(A);XP(a)
- Threat
- B(A)
- Vars
- P(d);OGATEB,XB(A)::R(C)
- P(b);OGATEB::R(C),XP(b)
- S(k);N_GUARD::S(H),XS(k)
- Refutation
- P(h);P_PINQ(G),P_SPINP(h),XB(E)
- Try
- B(E);CHECK
- Vars
- K(e);P-FLIGHT::B(E),XP(b)
- Refutation
- K(e);P-FLIGHT,XB(E)
- Try
- R(C);
- Threat
- R(C),XP(d)
- Vars
- P(a);OGATE,XR(C)::B(A),XP(a)
- P(b);OGATEB::R(C),XP(b)
- S(f);OGATE::P(D),XS(f)
- S(f);SBLOCK::QAB(G)
- S(k);N_GUARD::S(H)
- Refutation
- P(d);
- Try
- R(C);P_PINP(d)
- Threat
- R(C),XP(d)
- Vars
- S(f);OGATE::P(D),XS(f)
- S(f);SBLOCK::QAB(G)
- S(k);N_GUARD::S(H)
- Refutation
- P(b);
- Try
- Actual
- K(F);S_FLIGHT
- Vars
- S(f);OGATE,XP(D)::B(A),XS(f)
- P(a);N_GUARD,XR(C)::B(A)
- P(h);OGATE,P_SPINP(h),XB(E)::QAR1(G),XP(h)
- P(b);OGATEB::R(C),XP(b)
- R(i);N_GUARD::S(H),XP(h)
- S(f);OGATE::P(D),XS(f)
- S(f);SBLOCK::QAB(G)
- S(k);N_GUARD::S(H)
- S(k);N_GUARD::S(H),XS(k)
- P(a);N_GUARD::B(A)
- P(d);OGATEB::R(C)
- P(h);SBLOCK::QAR(G)+B(E)
- P(h);SBLOCK::QAR2(G),XP(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).