MESON Chess Problem Database
Problem Display
PID: 5048 (2b4n/1N3pR1/3B4/1Qbr1kpN/K1p1R3/7P/8/7B w - - 0 1)
Blake, Percy Francis
2nd Prize, Brighton Society, 1897-1898
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Re5#
- 1...Rd2
- 2.Re5#
- 1...Rd3
- 2.Re5#
- 1...Rd4
- 2.Re5#
- 1...Re5
- 2.Rxe5#
- 1...Rxd6
- 2.Sxd6#
- 1...Bg1
- 2.Qxd5#
- 1...Bf2
- 2.Qxd5#
- 1...Ba3
- 2.Qxd5#
- 1...Be3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bb6
- 2.Qxd5#
- 1...Bxd6
- 2.Sxd6#
- 1...Ba7
- 2.Qxd5#
- 1...Bxb7
- 2.Qd7#
- 1...Bd7
- 2.Qxd7#
- 1...Sg6
- 2.Rxf7#
- 1...g4
- 2.hxg4#
- 1...f6
- 2.Sg3#
- 1...Rd1
- Tries
- 1.Bf4?
- threat
- 2.Rxg5#
- 1...Re5
- 2.Rxe5#
- 1...Be7
- 2.Qxd5#
- 1...Sg6
- 2.Rxf7#
- 1...g4
- 2.Rg5#
- 2.hxg4#
- 1...f6
- 2.Sg3#
- 1...gxf4!
- threat
- 1.Be7?
- threat
- 2.Sg3#
- 2.Rxg5#
- 1...Bxe7
- 2.Qxd5#
- 1...Rd3
- 2.Rxg5#
- 1...Bf2
- 2.Sd6#
- 2.Rxg5#
- 2.Qxd5#
- 1...Be3
- 2.Sg3#
- 2.Sd6#
- 2.Qxd5#
- 1...Bd6
- 2.Sxd6#
- 2.Rxg5#
- 1...Sg6
- 2.Sg3#
- 2.Rxf7#
- 1...g4
- 2.Sg3#
- 2.Rg5#
- 2.hxg4#
- 1...f6
- 2.Sg3#
- 1...Re5!
- threat
- 1.Re1?
- 1...Rxd6
- 2.Sxd6#
- 1...Bxd6
- 2.Sxd6#
- 1...Bxb7
- 2.Qd7#
- 1...Re5
- 2.Rxe5#
- 1...Be3
- 2.Qxd5#
- 1...Be6
- 2.Be4#
- 1...Rd1
- 2.Re5#
- 1...Rd2
- 2.Re5#
- 1...Rd3
- 2.Re5#
- 1...Rd4
- 2.Re5#
- 1...Bg1
- 2.Qxd5#
- 1...Bf2
- 2.Qxd5#
- 1...Ba3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qb1#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Bd7
- 2.Qxd7#
- 1...Sg6
- 2.Rxf7#
- 1...g4
- 2.hxg4#
- 1...f6
- 2.Sg3#
- 1...c3!
- 1...Rxd6
- 1.Re2?
- 1...Rxd6
- 2.Sxd6#
- 1...Bxd6
- 2.Sxd6#
- 1...Bxb7
- 2.Qd7#
- 1...Re5
- 2.Rxe5#
- 1...Be3
- 2.Qxd5#
- 1...Be6
- 2.Be4#
- 1...Rd1
- 2.Re5#
- 1...Rd2
- 2.Re5#
- 1...Rd3
- 2.Re5#
- 1...Rd4
- 2.Re5#
- 1...Bg1
- 2.Qxd5#
- 1...Bf2
- 2.Qxd5#
- 1...Ba3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qb1#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Bd7
- 2.Qxd7#
- 1...Sg6
- 2.Rxf7#
- 1...g4
- 2.hxg4#
- 1...f6
- 2.Sg3#
- 1...c3!
- 1...Rxd6
- 1.Rf4+?
- 1...Ke6
- 2.Rf6#
- 2.Qe8#
- 1...gxf4!
- 1...Ke6
- 1.Re7?
- threat
- 2.Be4#
- 1...Rd4
- 2.Re5#
- 1...Re5
- 2.Rxe5#
- 1...Be6!
- threat
- 1.Re8?
- threat
- 2.Be4#
- 1...Rd4
- 2.Re5#
- 1...Re5
- 2.Rxe5#
- 1...Be6!
- threat
- 1.Qe8?
- threat
- 2.Qxc8#
- 1...Bd7+
- 2.Qxd7#
- 1...Rxd6
- 2.Re5#
- 2.Qe5#
- 1...Bxb7
- 2.Qd7#
- 1...Re5
- 2.Rxe5#
- 2.Qxe5#
- 1...Be6!
- threat
- 1.Bf4?
- Keys
- 1.Re3!
- 1...Rxd6
- 2.Sxd6#
- 1...Bxe3
- 2.Qxd5#
- 1...Bxd6
- 2.Sxd6#
- 1...Bxb7
- 2.Qd7#
- 1...Re5
- 2.Rxe5#
- 1...Be6
- 2.Be4#
- 1...Rd1
- 2.Re5#
- 1...Rd2
- 2.Re5#
- 1...Rd3
- 2.Re5#
- 1...Rd4
- 2.Re5#
- 1...Ba3
- 2.Qxd5#
- 1...Bb4
- 2.Qxd5#
- 1...Bd4
- 2.Qb1#
- 1...Bb6
- 2.Qxd5#
- 1...Ba7
- 2.Qxd5#
- 1...Bd7
- 2.Qxd7#
- 1...Sg6
- 2.Rxf7#
- 1...c3
- 2.Qf1#
- 1...g4
- 2.hxg4#
- 1...f6
- 2.Sg3#
- 1...Rxd6
- 1.Re3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 2
- Sets
- R(c);N_GUARD,P_SPINB(b)::R1(D)
- R(c);N_GUARD::R1(D),XR(c)
- R(c);P_SPINB(b),XB(G)::S(H),XR(c)
- B(b);OGATE,P_SPINR(c)::QAR2(E),XR(c)
- B(b);P_SPINR(c),XB(G)::S(H),XB(b)
- B(g);N_GUARD,XS(H)::QAB(E)
- B(g);N_GUARD,P_PINQ(E)::QAB(E),XB(g)
- S(h);N_GUARD,SBLOCK::R(I),XP(f)
- P(e);OGATE::P(B),XP(e)
- P(f);SBLOCK::S(F)
- Tries
- Try
- B(G);
- Threat
- R1(I),XP(e)
- Vars
- R(c);N_GUARD::R1(D),XR(c)
- B(b);OGATE,P_SPINR(c)::QAR2(E),XR(c)
- S(h);N_GUARD,SBLOCK::R(I),XP(f)
- P(f);SBLOCK::S(F)
- Refutation
- P(e);XB(G)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- B(b);OGATE,P_SPINR(c),XB(G)::QAR2(E),XR(c)
- R(c);P_SPINB(b)::R1(I),XP(e)
- P(f);::S(F)
- Refutation
- R(c);
- Try
- R(D);
- Vars
- R(c);P_SPINB(b),XB(G)::S(H),XR(c)
- B(b);P_SPINR(c),XB(G)::S(H),XB(b)
- B(g);N_GUARD,XS(H)::QAB(E)
- R(c);N_GUARD::R1(D),XR(c)
- B(b);OGATE,P_SPINR(c)::QAR2(E),XR(c)
- B(g);SBLOCK::B(A)
- R(c);N_GUARD,P_SPINB(b)::R1(D)
- B(b);P_SPINR(c)::QAB(E)
- B(g);N_GUARD,P_PINQ(E)::QAB(E),XB(g)
- S(h);N_GUARD,SBLOCK::R(I),XP(f)
- P(e);OGATE::P(B),XP(e)
- P(f);SBLOCK::S(F)
- Refutation
- P(a);
- Try
- R(D);
- Vars
- R(c);P_SPINB(b),XB(G)::S(H),XR(c)
- B(b);P_SPINR(c),XB(G)::S(H),XB(b)
- B(g);N_GUARD,XS(H)::QAB(E)
- R(c);N_GUARD::R1(D),XR(c)
- B(b);OGATE,P_SPINR(c)::QAR2(E),XR(c)
- B(g);SBLOCK::B(A)
- R(c);N_GUARD,P_SPINB(b)::R1(D)
- B(b);P_SPINR(c)::QAB(E)
- B(g);N_GUARD,P_PINQ(E)::QAB(E),XB(g)
- S(h);N_GUARD,SBLOCK::R(I),XP(f)
- P(e);OGATE::P(B),XP(e)
- P(f);SBLOCK::S(F)
- Refutation
- P(a);
- Try
- R(D);CHECK
- Refutation
- P(e);XR(D)
- Try
- R(D);
- Threat
- B(A)
- Vars
- R(c);N_GUARD,P_SPINB(b)::R1(D)
- R(c);N_GUARD::R1(D),XR(c)
- Refutation
- B(g);
- Try
- R(D);
- Threat
- B(A)
- Vars
- R(c);N_GUARD,P_SPINB(b)::R1(D)
- R(c);N_GUARD::R1(D),XR(c)
- Refutation
- B(g);
- Try
- Q(E);
- Threat
- QAB(E),XB(g)
- Vars
- B(g);CHECK,N_GUARD::QAB(E),XB(g)
- B(g);N_GUARD,XS(H)::QAB(E)
- Refutation
- B(g);
- Try
- Actual
- R(D);
- Vars
- R(c);P_SPINB(b),XB(G)::S(H),XR(c)
- B(b);OGATE,P_SPINR(c),XR(D)::QAR2(E),XR(c)
- B(b);P_SPINR(c),XB(G)::S(H),XB(b)
- B(g);N_GUARD,XS(H)::QAB(E)
- R(c);N_GUARD::R1(D),XR(c)
- B(g);SBLOCK::B(A)
- R(c);N_GUARD,P_SPINB(b)::R1(D)
- B(b);OGATE,P_SPINR(c)::QAR2(E),XR(c)
- B(b);P_SPINR(c)::QAB(E)
- B(g);N_GUARD,P_PINQ(E)::QAB(E),XB(g)
- S(h);N_GUARD,SBLOCK::R(I),XP(f)
- P(a);OGATE::QAR(E)
- P(e);OGATE::P(B),XP(e)
- P(f);SBLOCK::S(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).