MESON Chess Problem Database
Problem Display
PID: 3076 (3R1N2/2k1PP2/K1Pp1n2/5P2/1N1n3p/1P4rp/7B/2Q5 w - - 0 1)
Cockburn, LH
Morning Post, 1918
#2
11 + 7
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Rg1
- 2.Bxd6#
- 1...Rg2
- 2.Bxd6#
- 1...Rxb3
- 2.Bxd6#
- 1...Rc3
- 2.Bxd6#
- 1...Rd3
- 2.Bxd6#
- 1...Re3
- 2.Bxd6#
- 1...Rf3
- 2.Bxd6#
- 1...Rg4
- 2.Bxd6#
- 1...Rg5
- 2.Bxd6#
- 1...Rg6
- 2.Bxd6#
- 1...Rg7
- 2.Bxd6#
- 1...Rg8
- 2.Bxd6#
- 1...Sc2
- 2.Se6#
- 1...Se2
- 2.Se6#
- 1...Sxb3
- 2.Se6#
- 1...Sf3
- 2.Se6#
- 1...Sb5
- 2.Se6#
- 1...Sxf5
- 2.Se6#
- 1...Sxc6
- 2.Se6#
- 2.Qxc6#
- 1...Se6
- 2.Sxe6#
- 1...Se4
- 2.Sd5#
- 1...Sg4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Sd7
- 2.Sd5#
- 1...Sh7
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 2.fxe8S#
- 1...Sg8
- 2.Sd5#
- 1...d5
- 2.Qf4#
- 1...Rg1
- Tries
- 1.Ka5?
- threat
- 2.Sa6#
- 1...Sxc6+
- 2.Qxc6#
- 1...Rc3
- 2.Bxd6#
- 1...Sc2
- 2.Se6#
- 1...Sxb3+!
- threat
- 1.Ka7?
- threat
- 2.Sa6#
- 1...Sxc6+
- 2.Qxc6#
- 1...Rc3
- 2.Bxd6#
- 1...Sc2
- 2.Se6#
- 1...Sb5+!
- threat
- 1.Bxg3?
- threat
- 2.Bxd6#
- 1...Sxf5
- 2.Se6#
- 1...Sb5
- 2.Se6#
- 1...Se4
- 2.Sd5#
- 1...Sd7
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 2.fxe8S#
- 1...hxg3!
- threat
- 1.Qc2?
- 1...Rxb3
- 2.Bxd6#
- 1...Sxc2
- 2.Se6#
- 1...Sxb3
- 2.Se6#
- 1...Sxf5
- 2.Se6#
- 1...Sxc6
- 2.Se6#
- 2.Qxc6#
- 1...Se4
- 2.Sd5#
- 1...Rg1
- 2.Bxd6#
- 1...Rg2
- 2.Bxd6#
- 1...Rc3
- 2.Bxd6#
- 1...Rd3
- 2.Bxd6#
- 1...Re3
- 2.Bxd6#
- 1...Rf3
- 2.Bxd6#
- 1...Rg4
- 2.Bxd6#
- 1...Rg5
- 2.Bxd6#
- 1...Rg6
- 2.Bxd6#
- 1...Rg7
- 2.Bxd6#
- 1...Rg8
- 2.Bxd6#
- 1...Se2
- 2.Se6#
- 1...Sf3
- 2.Se6#
- 1...Sb5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sg4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Sd7
- 2.Sd5#
- 1...Sh7
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 2.fxe8S#
- 1...Sg8
- 2.Sd5#
- 1...d5!
- 1...Rxb3
- 1.Qc3?
- 1...Rxc3
- 2.Bxd6#
- 1...Sxb3
- 2.Se6#
- 1...Sxf5
- 2.Se6#
- 1...Sxc6
- 2.Se6#
- 2.Qxc6#
- 1...Se4
- 2.Sd5#
- 1...Rg1
- 2.Bxd6#
- 1...Rg2
- 2.Bxd6#
- 1...Rd3
- 2.Bxd6#
- 1...Re3
- 2.Bxd6#
- 1...Rf3
- 2.Bxd6#
- 1...Rg4
- 2.Bxd6#
- 1...Rg5
- 2.Bxd6#
- 1...Rg6
- 2.Bxd6#
- 1...Rg7
- 2.Bxd6#
- 1...Rg8
- 2.Bxd6#
- 1...Sc2
- 2.Se6#
- 1...Se2
- 2.Se6#
- 1...Sf3
- 2.Se6#
- 1...Sb5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sg4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Sd7
- 2.Sd5#
- 1...Sh7
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 2.fxe8S#
- 1...Sg8
- 2.Sd5#
- 1...d5!
- 1...Rxc3
- 1.Qc4?
- 1...Rxb3
- 2.Bxd6#
- 1...Sxb3
- 2.Se6#
- 1...Sxf5
- 2.Se6#
- 1...Sxc6
- 2.Se6#
- 2.Qxc6#
- 1...Se4
- 2.Sd5#
- 1...Rg1
- 2.Bxd6#
- 1...Rg2
- 2.Bxd6#
- 1...Rc3
- 2.Bxd6#
- 1...Rd3
- 2.Bxd6#
- 1...Re3
- 2.Bxd6#
- 1...Rf3
- 2.Bxd6#
- 1...Rg4
- 2.Bxd6#
- 1...Rg5
- 2.Bxd6#
- 1...Rg6
- 2.Bxd6#
- 1...Rg7
- 2.Bxd6#
- 1...Rg8
- 2.Bxd6#
- 1...Sc2
- 2.Se6#
- 1...Se2
- 2.Se6#
- 1...Sf3
- 2.Se6#
- 1...Sb5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sg4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sh5
- 2.Sd5#
- 1...Sd7
- 2.Sd5#
- 1...Sh7
- 2.Sd5#
- 1...Se8
- 2.Sd5#
- 2.fxe8S#
- 1...Sg8
- 2.Sd5#
- 1...d5!
- 1...Rxb3
- 1.Qc5?
- threat
- 2.Qb6#
- 2.Qxd6#
- 2.Qa7#
- 2.Qa5#
- 1...Sxb3
- 2.Se6#
- 2.Qb6#
- 2.Qxd6#
- 2.Qa7#
- 1...Sxf5
- 2.Se6#
- 2.Qb6#
- 2.Qa7#
- 2.Qa5#
- 1...Sxc6
- 2.Se6#
- 2.Qb6#
- 2.Qxd6#
- 2.Qxc6#
- 1...Se4
- 2.Sd5#
- 2.Qb6#
- 2.Qa7#
- 2.Qa5#
- 1...Sb5
- 2.Se6#
- 2.Qb6#
- 1...Sd5
- 2.Sxd5#
- 2.Qxd6#
- 2.Qa7#
- 1...Sd7
- 2.Sd5#
- 2.Qa7#
- 1...Se8
- 2.Sd5#
- 2.Qb6#
- 2.Qa7#
- 2.Qa5#
- 2.fxe8S#
- 1...d5
- 2.Qb6#
- 2.Qd6#
- 2.Qa7#
- 2.Qa5#
- 1...dxc5!
- threat
- 1.e8Q?
- threat
- 2.Rc8#
- 1...d5
- 2.Qf4#
- 1...Sxe8!
- threat
- 1.e8R?
- threat
- 2.Rc8#
- 1...d5
- 2.Qf4#
- 1...Sxe8!
- threat
- 1.Ka5?
- Keys
- 1.Qg5!
- 1...Rxb3
- 2.Bxd6#
- 1...Rxg5
- 2.Bxd6#
- 1...Sxb3
- 2.Se6#
- 1...Sxf5
- 2.Se6#
- 1...Sxc6
- 2.Se6#
- 1...Se4
- 2.e8S#
- 1...Rg1
- 2.Bxd6#
- 1...Rg2
- 2.Bxd6#
- 1...Rc3
- 2.Bxd6#
- 1...Rd3
- 2.Bxd6#
- 1...Re3
- 2.Bxd6#
- 1...Rf3
- 2.Bxd6#
- 1...Rg4
- 2.Bxd6#
- 1...Sc2
- 2.Se6#
- 1...Se2
- 2.Se6#
- 1...Sf3
- 2.Se6#
- 1...Sb5
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sg4
- 2.e8S#
- 1...Sd5
- 2.e8S#
- 1...Sh5
- 2.e8S#
- 1...Sd7
- 2.e8S#
- 1...Sh7
- 2.e8S#
- 1...Se8
- 2.fxe8S#
- 1...Sg8
- 2.e8S#
- 1...d5
- 2.Qf4#
- 1...Rxb3
- 1.Qg5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(a);OGATE,P_SPINP(e)::B(B),XP(e)
- R(a);OGATE,P_SPINP(e),XP(C)::B(B),XP(e)
- S(c);N_GUARD::S(K)
- S(c);N_GUARD,XP(C)::S(K)
- S(c);N_GUARD,XP(E)::S(K)
- S(c);N_GUARD::S(K),XS(c)
- S(f);N_GUARD::S(D)
- S(f);N_GUARD::S(D),XS(f)
- P(e);OGATEB,P_SPINR(a)::QAB(A)
- Tries
- Try
- K(F);P-FLIGHT
- Threat
- S(D)
- Vars
- S(c);CHECK,OGATE,P_SPINS(c),XP(G)::QAR1(A),XS(c)
- R(a);OGATE,P_SPINP(e)::B(B),XP(e)
- S(c);N_GUARD::S(K)
- Refutation
- S(c);CHECK,XP(C)
- Try
- K(F);P-FLIGHT
- Threat
- S(D)
- Vars
- S(c);CHECK,OGATE,P_SPINS(c),XP(G)::QAR1(A),XS(c)
- R(a);OGATE,P_SPINP(e)::B(B),XP(e)
- S(c);N_GUARD::S(K)
- Refutation
- S(c);CHECK
- Try
- B(B);P_PINP(e),XR(a)
- Threat
- B(B),XP(e)
- Vars
- S(c);N_GUARD,XP(E)::S(K)
- S(c);N_GUARD::S(K)
- S(f);N_GUARD::S(D)
- Refutation
- P(d);N_SPINP(e),XB(B)
- Try
- Q(A);
- Vars
- R(a);OGATE,P_SPINP(e),XP(C)::B(B),XP(e)
- S(c);N_GUARD,XQ(A)::S(K)
- S(c);N_GUARD,XP(C)::S(K)
- S(c);N_GUARD,XP(E)::S(K)
- S(f);N_GUARD::S(D)
- R(a);OGATE,P_SPINP(e)::B(B),XP(e)
- S(c);N_GUARD::S(K)
- S(c);N_GUARD::S(K),XS(c)
- S(f);N_GUARD::S(D),XS(f)
- Refutation
- P(e);P_SPINR(a)
- Try
- Q(A);
- Vars
- R(a);OGATE,P_SPINP(e),XQ(A)::B(B),XP(e)
- S(c);N_GUARD,XP(C)::S(K)
- S(c);N_GUARD,XP(E)::S(K)
- S(f);N_GUARD::S(D)
- R(a);OGATE,P_SPINP(e)::B(B),XP(e)
- S(c);N_GUARD::S(K)
- S(c);N_GUARD::S(K),XS(c)
- S(f);N_GUARD::S(D),XS(f)
- Refutation
- P(e);P_SPINR(a)
- Try
- Q(A);
- Vars
- R(a);OGATE,P_SPINP(e),XP(C)::B(B),XP(e)
- S(c);N_GUARD,XP(C)::S(K)
- S(c);N_GUARD,XP(E)::S(K)
- S(f);N_GUARD::S(D)
- R(a);OGATE,P_SPINP(e)::B(B),XP(e)
- S(c);N_GUARD::S(K)
- S(c);N_GUARD::S(K),XS(c)
- S(f);N_GUARD::S(D),XS(f)
- Refutation
- P(e);P_SPINR(a)
- Try
- Q(A);
- Threat
- DUALS(4)
- Refutation
- P(e);P_SPINR(a),XQ(A)
- Try
- P(H);
- Threat
- R1(J)
- Vars
- P(e);OGATEB,P_SPINR(a)::QAB(A)
- Refutation
- S(f);XQ(H)
- Try
- P(H);
- Threat
- R1(J)
- Vars
- P(e);OGATEB,P_SPINR(a)::QAB(A)
- Refutation
- S(f);XR(H)
- Try
- Actual
- Q(A);
- Vars
- R(a);OGATE,P_SPINP(e),XP(C)::B(B),XP(e)
- R(a);OGATE,P_SPINP(e),XQ(A)::B(B),XP(e)
- S(c);N_GUARD,XP(C)::S(K)
- S(c);N_GUARD,XP(E)::S(K)
- S(c);N_GUARD,XP(G)::S(K)
- S(f);N_GUARD::P=S
- R(a);OGATE,P_SPINP(e)::B(B),XP(e)
- S(c);N_GUARD::S(K)
- S(c);N_GUARD::S(K),XS(c)
- S(f);OGATE::PXS(f)=S
- P(e);OGATEB,P_SPINR(a)::QAB(A)
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).