MESON Chess Problem Database
Problem Display
PID: 4964 (b1Q5/4p3/1p1BB2n/1P2P2N/r3kPpp/3R2b1/2P1KR2/1n1N4 w - - 0 1)
Blake, Percy Francis
Liverpool Weekly Mercury, 1896
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qxa8#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Re3#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Bxf2
- 2.Sxf2#
- 1...Bxf4
- 2.Rxf4#
- 1...Bd5
- 2.Bxd5#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3+
- 2.Sxc3#
- 1...Sf5
- 2.Bxf5#
- 1...Sf7
- 2.Bf5#
- 1...Sg8
- 2.Bf5#
- 1...h3
- 2.Sxg3#
- 1...exd6
- 2.Sf6#
- 1...Ra1
- Tries
- 1.Kf1?
- threat
- 2.Re2#
- 1...Bxf2
- 2.Sxf2#
- 1...Bxf4
- 2.Rxf4#
- 1...Sc3
- 2.Sxc3#
- 1...Sf5
- 2.Bxf5#
- 1...Sd2+!
- threat
- 1.Bb4?
- threat
- 2.Qc4#
- 1...Sc3+
- 2.Sxc3#
- 1...Rxb4
- 2.Qxa8#
- 1...Bxf2
- 2.Sxf2#
- 1...Bd5
- 2.Bxd5#
- 1...Bc6
- 2.Qxc6#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sf5
- 2.Bxf5#
- 1...Bxf4!
- threat
- 1.Bxe7?
- threat
- 2.Sf6#
- 1...Sc3+
- 2.Sxc3#
- 1...Bxf2
- 2.Sxf2#
- 1...Sg8
- 2.Bf5#
- 1...Bxf4!
- threat
- 1.Bxg4?
- threat
- 2.Bf3#
- 1...Sc3+
- 2.Sxc3#
- 1...Sd2
- 2.Sc3#
- 1...e6
- 2.Sf6#
- 1...Sxg4!
- threat
- 1.Rf1?
- 1...Sc3+
- 2.Sxc3#
- 1...Bxf4
- 2.Sf2#
- 2.Rxf4#
- 1...exd6
- 2.Sf6#
- 1...Bh2
- 2.Sf2#
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qxa8#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Re3#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Bf2
- 2.Sxf2#
- 1...Bd5
- 2.Bxd5#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sf5
- 2.Bxf5#
- 1...Sf7
- 2.Bf5#
- 1...Sg8
- 2.Bf5#
- 1...h3
- 2.Sxg3#
- 1...Be1!
- 1...Sc3+
- 1.Rff3?
- threat
- 2.Rfe3#
- 1...Sc3+
- 2.Sxc3#
- 1...Bxf4
- 2.Sf2#
- 2.Rxf4#
- 1...Bf2
- 2.Sxf2#
- 1...Sf5
- 2.Bxf5#
- 1...gxf3+!
- threat
- 1.Qc3?
- threat
- 2.Re3#
- 1...Sxc3+
- 2.Sxc3#
- 1...Bxf2
- 2.Sxf2#
- 1...Bxf4
- 2.Rxf4#
- 1...Sf5!
- threat
- 1.c3?
- threat
- 2.Re3#
- 1...Sxc3+
- 2.Sxc3#
- 1...Bxf2
- 2.Sxf2#
- 1...Bxf4
- 2.Rxf4#
- 1...Sf5
- 2.Bxf5#
- 1...Ra2+!
- threat
- 1.Kf1?
- Keys
- 1.Ke1!
- 1...Bxf2+
- 2.Sxf2#
- 1...Bxf4
- 2.Rxf4#
- 1...exd6
- 2.Sf6#
- 1...Ra1
- 2.Qc4#
- 1...Ra2
- 2.Qc4#
- 1...Ra3
- 2.Qc4#
- 1...Rb4
- 2.Qxa8#
- 1...Rc4
- 2.Qxc4#
- 1...Rd4
- 2.Re3#
- 1...Ra5
- 2.Qc4#
- 1...Ra6
- 2.Qc4#
- 1...Ra7
- 2.Qc4#
- 1...Bh2
- 2.Re2#
- 1...Bd5
- 2.Bxd5#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sd2
- 2.Sc3#
- 1...Sa3
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sf5
- 2.Bxf5#
- 1...Sf7
- 2.Bf5#
- 1...Sg8
- 2.Bf5#
- 1...h3
- 2.Sxg3#
- 1...Bxf2+
- 1.Ke1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(c);N_GUARD::QAR2(L)
- R(c);N_GUARD,P_PINP(B)::QAR2(L)
- R(c);N_GUARD::QAB(L),XB(j)
- R(c);N_GUARD::QAR2(L),XR(c)
- R(c);SBLOCK::R1(E)
- B(b);XR(D)::S(A),XB(b)
- B(b);OGATE,XP(F)::R1(D),XB(b)
- B(j);N_GUARD::B(K),XB(j)
- B(j);N_GUARD::QAB(L),XB(j)
- S(a);N_GUARD::S(A)
- S(a);CHECK,N_GUARD::S(A),XS(a)
- S(h);N_GUARD::B(K),XS(h)
- S(h);N_GUARD::B(K)
- P(f);N_GUARD::S(I),XB(b)
- P(i);N_GUARD,XB(J)::S(I)
- Tries
- Try
- K(C);S_FLIGHT
- Threat
- R(D)
- Vars
- B(b);XR(D)::S(A),XB(b)
- B(b);OGATE,XP(F)::R1(D),XB(b)
- S(a);N_GUARD::S(A),XS(a)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- S(a);CHECK
- Try
- B(J);
- Threat
- QAR2(L)
- Vars
- S(a);CHECK,N_GUARD::S(A),XS(a)
- R(c);N_GUARD,XB(J)::QAB(L),XB(j)
- B(b);XR(D)::S(A),XB(b)
- B(j);N_GUARD::B(K),XB(j)
- B(j);N_GUARD::QAB(L),XB(j)
- S(a);N_GUARD::S(A)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- B(b);XP(F)
- Try
- B(J);XP(i)
- Threat
- S(I)
- Vars
- S(a);CHECK,N_GUARD::S(A),XS(a)
- B(b);XR(D)::S(A),XB(b)
- S(h);N_GUARD::B(K)
- Refutation
- B(b);XP(F)
- Try
- B(K);XP(e)
- Threat
- B(K)
- Vars
- S(a);CHECK,N_GUARD::S(A),XS(a)
- S(a);N_GUARD::S(A)
- P(i);N_GUARD::S(I)
- Refutation
- S(h);XB(K)
- Try
- R(D);
- Vars
- S(a);CHECK,N_GUARD::S(A),XS(a)
- P(i);N_GUARD,XB(J)::S(I)
- B(b);N_GUARD::S(A)
- R(c);N_GUARD::QAR2(L)
- R(c);N_GUARD,P_PINP(B)::QAR2(L)
- R(c);N_GUARD::QAB(L),XB(j)
- R(c);N_GUARD::QAR2(L),XR(c)
- R(c);SBLOCK::R1(E)
- B(b);N_GUARD::S(A),XB(b)
- B(j);N_GUARD::B(K),XB(j)
- B(j);N_GUARD::QAB(L),XB(j)
- S(a);N_GUARD::S(A)
- S(h);N_GUARD::B(K),XS(h)
- S(h);N_GUARD::B(K)
- P(f);N_GUARD::S(I),XB(b)
- Refutation
- B(b);
- Try
- R(D);
- Threat
- R1(D)
- Vars
- S(a);CHECK,N_GUARD::S(A),XS(a)
- B(b);N_GUARD::S(A),XB(b)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- P(e);CHECK,XR(D)
- Try
- Q(L);
- Threat
- R1(E)
- Vars
- S(a);CHECK,XQ(L)::S(A),XS(a)
- B(b);XR(D)::S(A),XB(b)
- B(b);OGATE,XP(F)::R1(D),XB(b)
- Refutation
- S(h);
- Try
- P(B);
- Threat
- R1(E)
- Vars
- S(a);CHECK,XP(B)::S(A),XS(a)
- B(b);XR(D)::S(A),XB(b)
- B(b);OGATE,XP(F)::R1(D),XB(b)
- S(h);N_GUARD::B(K),XS(h)
- Refutation
- R(c);CHECK
- Try
- Actual
- K(C);P-FLIGHT,P_SPINR(D)
- Vars
- B(b);CHECK,XR(D)::S(A),XB(b)
- B(b);N_PINR(D),XP(F)::R1(D),XB(b)
- P(i);N_GUARD,XB(J)::S(I)
- R(c);N_GUARD::QAR2(L)
- R(c);N_GUARD::QAB(L),XB(j)
- R(c);N_GUARD::QAR2(L),XR(c)
- R(c);SBLOCK::R1(E)
- B(b);N_PINR(D)::R(D)
- B(j);N_GUARD::B(K),XB(j)
- B(j);N_GUARD::QAB(L),XB(j)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(h);N_GUARD::B(K),XS(h)
- S(h);N_GUARD::B(K)
- P(f);N_GUARD::S(I),XB(b)
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).