MESON Chess Problem Database
Problem Display
PID: 3078 (8/3n2p1/2R1R1P1/3k1B1P/1Pnp2NP/2prB1NK/2P5/5Qbb w - - 0 1)
Cockburn, LH
Morning Post, 1918
#2
13 + 9
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rd1
- 2.Qxc4#
- 1...Rd2
- 2.Qxc4#
- 1...Rxe3
- 2.Qxc4#
- 1...Bf2
- 2.Qxh1#
- 1...Bh2
- 2.Qxh1#
- 1...Bxe3
- 2.Qxh1#
- 1...Bg2+
- 2.Qxg2#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.Bxe4#
- 1...Sb2
- 2.Red6#
- 1...Sd2
- 2.Red6#
- 1...Sa3
- 2.Red6#
- 1...Sxe3
- 2.Red6#
- 1...Sa5
- 2.Red6#
- 1...Sce5
- 2.Red6#
- 1...Scb6
- 2.Red6#
- 1...Sd6
- 2.Rexd6#
- 1...Sc5
- 2.Rxc5#
- 1...Sde5
- 2.Rc5#
- 1...Sdb6
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...dxe3
- 2.Qxd3#
- 1...Rd1
- Tries
- 1.Sxh1?
- threat
- 2.Be4#
- 2.Qg2#
- 2.Qf3#
- 1...Sxe3
- 2.Be4#
- 2.Red6#
- 2.Qf3#
- 1...dxe3
- 2.Qxd3#
- 1...Sd6
- 2.Rexd6#
- 1...Rd2
- 2.Be4#
- 2.Qxc4#
- 2.Qf3#
- 1...Bf2
- 2.Be4#
- 2.Qg2#
- 1...Sd2
- 2.Red6#
- 1...Sce5
- 2.Red6#
- 1...Sc5
- 2.Rxc5#
- 1...Sde5
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Rxe3+!
- threat
- 1.Sf6+?
- 1...Sxf6
- 2.Rc5#
- 1...gxf6!
- 1...Sxf6
- 1.Qxd3?
- threat
- 2.Qxc4#
- 2.Qxd4#
- 1...Bxe3
- 2.Qxc4#
- 1...Sxe3
- 2.Rcd6#
- 2.Red6#
- 1...Sd6
- 2.Rcxd6#
- 2.Rexd6#
- 1...Sb2
- 2.Rcd6#
- 2.Red6#
- 2.Qxd4#
- 1...Sd2
- 2.Rcd6#
- 2.Red6#
- 2.Qxd4#
- 1...Sa3
- 2.Rcd6#
- 2.Red6#
- 2.Qxd4#
- 1...Sa5
- 2.Rcd6#
- 2.Red6#
- 2.Qxd4#
- 1...Sce5
- 2.Rcd6#
- 2.Red6#
- 2.Qxd4#
- 1...Scb6
- 2.Rcd6#
- 2.Red6#
- 2.Qxd4#
- 1...Sc5
- 2.Rxc5#
- 2.Qxd4#
- 1...Sde5
- 2.Rc5#
- 2.Qxd4#
- 1...Sdb6
- 2.Rc5#
- 2.Qxd4#
- 1...Bg2+!
- threat
- 1.cxd3?
- threat
- 2.dxc4#
- 1...Bg2+
- 2.Qxg2#
- 1...Sxe3
- 2.Rcd6#
- 2.Red6#
- 1...Sd6
- 2.Rcxd6#
- 2.Rexd6#
- 1...Sb2
- 2.Rcd6#
- 2.Red6#
- 1...Sd2
- 2.Rcd6#
- 2.Red6#
- 1...Sa3
- 2.Rcd6#
- 2.Red6#
- 1...Sa5
- 2.Rcd6#
- 2.Red6#
- 1...Sce5
- 2.Rcd6#
- 2.Red6#
- 1...Scb6
- 2.Rcd6#
- 2.Red6#
- 1...Sde5
- 2.Rc5#
- 1...Sdb6
- 2.Rc5#
- 1...dxe3!
- threat
- 1.h6?
- 1...Bg2+
- 2.Qxg2#
- 1...Rxe3
- 2.Qxc4#
- 1...Bxe3
- 2.Qxh1#
- 1...Sxe3
- 2.Red6#
- 1...dxe3
- 2.Qxd3#
- 1...Sd6
- 2.Rexd6#
- 1...Sde5
- 2.Rc5#
- 1...Rd1
- 2.Qxc4#
- 1...Rd2
- 2.Qxc4#
- 1...Bf2
- 2.Qxh1#
- 1...Bh2
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.Bxe4#
- 1...Sb2
- 2.Red6#
- 1...Sd2
- 2.Red6#
- 1...Sa3
- 2.Red6#
- 1...Sa5
- 2.Red6#
- 1...Sce5
- 2.Red6#
- 1...Scb6
- 2.Red6#
- 1...Sc5
- 2.Rxc5#
- 1...Sdb6
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...gxh6!
- 1...Bg2+
- 1.Sxh1?
- Keys
- 1.Se5!
- 1...Bg2+
- 2.Qxg2#
- 1...Rxe3
- 2.Qxc4#
- 1...Bxe3
- 2.Qxh1#
- 1...Sxe3
- 2.Rcd6#
- 1...Scxe5
- 2.Red6#
- 1...Sdxe5
- 2.Rc5#
- 1...dxe3
- 2.Qxd3#
- 1...Rd1
- 2.Qxc4#
- 1...Rd2
- 2.Qxc4#
- 1...Bf2
- 2.Qxh1#
- 1...Bh2
- 2.Qxh1#
- 1...Bf3
- 2.Qxf3#
- 1...Be4
- 2.Bxe4#
- 1...Sb2
- 2.Rcd6#
- 1...Sd2
- 2.Rcd6#
- 1...Sa3
- 2.Rcd6#
- 1...Sa5
- 2.Rcd6#
- 1...Scb6
- 2.Rcd6#
- 1...Sd6
- 2.Rcxd6#
- 1...Sc5
- 2.Rxc5#
- 1...Sdb6
- 2.Rc5#
- 1...Sf6
- 2.Rc5#
- 1...Sb8
- 2.Rc5#
- 1...Sf8
- 2.Rc5#
- 1...Bg2+
- 1.Se5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(d);OGATE::QAB1(A),XS(e)
- R(d);OGATE,P_PINS(D),XB(C)::QAB1(A),XS(e)
- B(a);OGATE::QAB(A),XB(b)
- B(a);OGATE,XB(C)::QAB(A),XB(b)
- B(b);CHECK,N_GUARD::QAB(A),XB(b)
- B(b);N_GUARD::QAB(A),XB(b)
- B(b);N_GUARD::B(I),XB(b)
- S(e);N_GUARD::R1(L)
- S(e);N_GUARD,XB(C)::R1(L)
- S(e);N_GUARD::R1(L),XS(e)
- S(h);N_GUARD::R1(K),XS(h)
- S(h);N_GUARD::R1(K)
- P(f);OGATEB,XB(C)::QAR2(A),XR(d)
- Tries
- Try
- S(D);P_SPINB(C),XB(b)
- Threat
- DUALS(3)
- Vars
- P(f);OGATEB,XB(C)::QAR2(A),XR(d)
- S(e);N_GUARD::R1(L),XS(e)
- S(e);N_GUARD::R1(L)
- S(h);N_GUARD::R1(K),XS(h)
- S(h);N_GUARD::R1(K)
- Refutation
- R(d);CHECK,XB(C)
- Try
- S(G);CHECK
- Vars
- S(h);XS(G)::R1(K)
- Refutation
- P(i);XS(G)
- Try
- Q(A);P_PINP(f),XR(d)
- Threat
- DUALS(2)
- Vars
- B(a);XB(C)::QAB1(A),XS(e)
- Refutation
- B(b);CHECK
- Try
- P(B);XR(d)
- Threat
- P(B),XS(e)
- Vars
- B(b);CHECK,N_GUARD::QAB(A),XB(b)
- S(h);N_GUARD::R1(K)
- Refutation
- P(f);XB(C)
- Try
- P(J);
- Vars
- B(b);CHECK,N_GUARD::QAB(A),XB(b)
- R(d);OGATE,P_PINS(D),XB(C)::QAB1(A),XS(e)
- B(a);OGATE,XB(C)::QAB(A),XB(b)
- S(e);N_GUARD,XB(C)::R1(L)
- P(f);OGATEB,XB(C)::QAR2(A),XR(d)
- S(e);N_GUARD::R1(L),XS(e)
- S(h);N_GUARD::R1(K)
- R(d);OGATE::QAB1(A),XS(e)
- B(a);OGATE::QAB(A),XB(b)
- B(b);N_GUARD::QAB(A),XB(b)
- B(b);N_GUARD::B(I),XB(b)
- S(e);N_GUARD::R1(L)
- S(h);N_GUARD::R1(K),XS(h)
- Refutation
- P(i);XP(J)
- Try
- Actual
- S(G);
- Vars
- B(b);CHECK,N_GUARD::QAB(A),XB(b)
- R(d);OGATE,P_PINS(D),XB(C)::QAB1(A),XS(e)
- B(a);OGATE,XB(C)::QAB(A),XB(b)
- S(e);N_GUARD,XB(C)::R1(K)
- S(e);N_GUARD,SBLOCK,XS(G)::R1(L)
- S(h);N_GUARD,XS(G)::R1(K)
- P(f);OGATEB,XB(C)::QAR2(A),XR(d)
- R(d);OGATE::QAB1(A),XS(e)
- B(a);OGATE::QAB(A),XB(b)
- B(b);N_GUARD::QAB(A),XB(b)
- B(b);N_GUARD::B(I),XB(b)
- S(e);N_GUARD::R1(K)
- S(e);N_GUARD::R1(K),XS(e)
- S(h);N_GUARD::R1(K),XS(h)
- S(h);N_GUARD::R1(K)
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).