MESON Chess Problem Database
Problem Display
PID: 51085 (2B1R2B/1P2n1r1/2pP2p1/3k2K1/n2pNP2/8/4QP2/1N1R4 w - - 0 1)
Coates, William H
Burnley Express, 1881
#2
12 + 7
SOLUTION
- SOUND
- Sets
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sb2
- 2.Sbc3#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sxc8
- 2.Re5#
- 2.Qa2#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...d3
- 2.Qxd3#
- 1...Rf7
- Tries
- 1.Sf6+?
- 1...Kxd6
- 2.Qe5#
- 1...Kc5!
- 1...Kxd6
- 1.Bh3?
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Re5#
- 2.Qa2#
- 1...Sc8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...c5!
- 1...d3
- 1.Bg4?
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Re5#
- 2.Qa2#
- 1...Sc8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...c5!
- 1...d3
- 1.Bd7?
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sc8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...c5!
- 1...d3
- 1.Bxg7?
- threat
- 2.Rxd4#
- 1...d3
- 2.Qxd3#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...c5!
- threat
- 1.Rd2?
- 1...Sxc8
- 2.Re5#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 1...c5!
- 1...Sxc8
- 1.Rxe7?
- threat
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Rxe7
- 2.Rxd4#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 2.Be6#
- 2.Re5#
- 1...Sc3
- 2.Sbxc3#
- 2.Be6#
- 2.Re5#
- 1...Sc5
- 2.Sbc3#
- 2.Re5#
- 1...Sb6
- 2.Sbc3#
- 2.Be6#
- 2.Re5#
- 1...c5!
- threat
- 1.Qf1?
- 1...Kxe4
- 2.Qg2#
- 2.Qh1#
- 1...Sxc8
- 2.Re5#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Re5#
- 1...Sg8
- 2.Re5#
- 1...c5!
- 1...Kxe4
- 1.Qd3?
- threat
- 2.Qxd4#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 2.Qb3#
- 1...c5!
- threat
- 1.Qc4+?
- 1...Kxe4
- 2.Sd2#
- 2.Qxc6#
- 1...Kxc4!
- 1...Kxe4
- 1.f3?
- threat
- 2.Qa2#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...c5!
- threat
- 1.dxe7?
- threat
- 2.Rd8#
- 1...Rxe7
- 2.Rxd4#
- 1...d3
- 2.Qxd3#
- 1...Rg8
- 2.Rxd4#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...c5!
- threat
- 1.b8Q?
- threat
- 2.Qb3#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Sc5
- 2.Sbc3#
- 2.Sec3#
- 2.Sf6#
- 1...Sb6
- 2.Sbc3#
- 1...c5!
- threat
- 1.b8S?
- 1...Sxc8
- 2.Re5#
- 2.Qa2#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...c5!
- 1...Sxc8
- 1.b8B?
- 1...Sxc8
- 2.Re5#
- 2.Qa2#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 2.Sec3#
- 2.Sf6#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...c5!
- 1...Sxc8
- 1.b8R?
- 1...Sxc8
- 2.Re5#
- 2.Qa2#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...Sg8
- 2.Be6#
- 2.Re5#
- 2.Qa2#
- 1...c5!
- 1...Sxc8
- 1.Sf6+?
- Keys
- 1.Qa6!
- 1...Kxe4
- 2.Qxc6#
- 1...Sxc8
- 2.Re5#
- 1...d3
- 2.Qxd3#
- 1...Sb2
- 2.Sbc3#
- 1...Rf7
- 2.Rxd4#
- 1...Rh7
- 2.Rxd4#
- 1...Rg8
- 2.Rxd4#
- 1...Sc3
- 2.Sbxc3#
- 1...Sc5
- 2.Sbc3#
- 1...Sb6
- 2.Sbc3#
- 1...Sf5
- 2.Re5#
- 1...Sg8
- 2.Re5#
- 1...c5
- 2.Sf6#
- 1...Kxe4
- 1.Qa6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- P(b);OGATEB::QAR2(C),XP(b)
- Tries
- Try
- S(E);CHECK
- Vars
- K(c);P-FLIGHT,XP(H)::QAB1(C)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(J);
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- B(J);
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- B(J);
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- B(L);XR(g)
- Threat
- R1(B),XP(b)
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- Refutation
- P(d);
- Try
- R(B);
- Vars
- S(f);OGATE,XB(J)::R1(K)
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- R(K);XS(f)
- Threat
- DUALS(3)
- Vars
- R(g);XR(K)::R1(B),XP(b)
- P(b);OGATEB::QAR2(C),XP(b)
- Refutation
- P(d);
- Try
- Q(C);
- Vars
- S(f);OGATE,XB(J)::R1(K)
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- S(f);OGATE::R1(K)
- Refutation
- P(d);
- Try
- Q(C);
- Threat
- QAR1(C),XP(b)
- Refutation
- P(d);
- Try
- Q(C);CHECK
- Refutation
- K(c);N_SPINP(b),S_FLIGHT,XQ(C)
- Try
- P(D);
- Threat
- QAB(C)
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- P(H);XS(f)
- Threat
- R(K)
- Vars
- R(g);XP(H)::R1(B),XP(b)
- P(b);OGATEB::QAR2(C),XP(b)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A)
- Refutation
- P(d);
- Try
- P(I);
- Threat
- QAB(I)
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- Refutation
- P(d);
- Try
- P(I);
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- P(I);
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- P(I);
- Vars
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(d);
- Try
- Actual
- Q(C);
- Vars
- K(c);N_SPINP(b),P_SPINS(f),S_FLIGHT,XS(E)::QAB(C),XP(d)
- S(f);OGATE,XB(J)::R1(K)
- P(b);OGATEB::QAR2(C),XP(b)
- S(a);N_GUARD::S(A)
- R(g);::R1(B),XP(b)
- S(a);N_GUARD::S(A),XS(a)
- S(f);OGATE::R1(K)
- P(d);SBLOCK::S(E)
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).