MESON Chess Problem Database
Problem Display
PID: 3075 (K2n4/3Bp3/6n1/2pk1N1N/2p5/3pR3/4PP2/1Q4b1 w - - 0 1)
Cockburn, LH
Morning Post, 1918
#2
8 + 8
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bxf2
- 2.Qh1#
- 1...Bh2
- 2.Qh1#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Sh8
- 2.Sf4#
- 1...Sc6
- 2.Be6#
- 1...Se6
- 2.Qb7#
- 1...Sb7
- 2.Qxb7#
- 1...Sf7
- 2.Qb7#
- 1...dxe2
- 2.Qe4#
- 1...d2
- 2.Qe4#
- 1...c3
- 2.Qxd3#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Bxf2
- Tries
- 1.Ka7?
- 1...Bxf2
- 2.Qh1#
- 1...dxe2
- 2.Qe4#
- 1...c3
- 2.Qxd3#
- 1...Bh2
- 2.Qh1#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Sh8
- 2.Sf4#
- 1...Se6
- 2.Qb7#
- 1...Sb7
- 2.Qxb7#
- 1...Sf7
- 2.Qb7#
- 1...d2
- 2.Qe4#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Sc6+!
- 1...Bxf2
- 1.Be6+?
- 1...Sxe6
- 2.Qb7#
- 1...Kc6!
- 1...Sxe6
- 1.Qf1?
- threat
- 2.Qg2#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...e5
- 2.Sf6#
- 1...c3!
- threat
- 1.Qxg1?
- threat
- 2.Qh1#
- 2.Qg2#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...e5
- 2.Sf6#
- 1...c3!
- threat
- 1.Qb7+?
- 1...Sc6
- 2.Bxc6#
- 2.Be6#
- 2.Qxc6#
- 1...Sxb7!
- 1...Sc6
- 1.exd3?
- 1...Bxf2
- 2.Qh1#
- 1...cxd3
- 2.Qxd3#
- 1...Sc6
- 2.Be6#
- 1...Bh2
- 2.Qh1#
- 1...Sf4
- 2.Sxf4#
- 1...Sh4
- 2.Sf4#
- 1...Se5
- 2.Sf4#
- 1...Sf8
- 2.Sf4#
- 1...Sh8
- 2.Sf4#
- 1...Se6
- 2.Qb7#
- 1...Sb7
- 2.Qxb7#
- 1...Sf7
- 2.Qb7#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...c3!
- 1...Bxf2
- 1.Ka7?
- Keys
- 1.f4!
- 1...Bxe3
- 2.Qh1#
- 1...Sxf4
- 2.Sxf4#
- 1...dxe2
- 2.Qe4#
- 1...c3
- 2.Qxd3#
- 1...Sc6
- 2.Be6#
- 1...Bf2
- 2.Qh1#
- 1...Bh2
- 2.Qh1#
- 1...Sh4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sf8
- 2.Re5#
- 1...Sh8
- 2.Re5#
- 1...Se6
- 2.Qb7#
- 1...Sb7
- 2.Qxb7#
- 1...Sf7
- 2.Qb7#
- 1...d2
- 2.Qe4#
- 1...e5
- 2.Sf6#
- 1...e6
- 2.Sf6#
- 1...Bxe3
- 1.f4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(a);OGATE,XP(C)::QAB(A)
- B(a);OGATE::QAB(A)
- S(f);N_GUARD::S(F),XS(f)
- S(f);N_GUARD::S(F)
- S(h);N_GUARD,SBLOCK::B(G)
- S(h);N_GUARD::QAB(A)
- S(h);N_GUARD::QAB(A),XS(h)
- P(b);OGATE,XP(B)::QAB1(A)
- P(b);OGATE::QAB1(A)
- P(c);N_GUARD::QAR2(A),XP(b)
- P(g);N_GUARD::S(F)
- Tries
- Try
- K(H);P-FLIGHT
- Vars
- B(a);OGATE,XP(C)::QAB(A)
- P(b);OGATE,XP(B)::QAB1(A)
- P(c);N_GUARD::QAR2(A),XP(b)
- B(a);OGATE::QAB(A)
- S(f);N_GUARD::S(F),XS(f)
- S(f);N_GUARD::S(F)
- S(h);N_GUARD::QAB(A)
- S(h);N_GUARD::QAB(A),XS(h)
- P(b);OGATE::QAB1(A)
- P(g);N_GUARD::S(F)
- Refutation
- S(h);CHECK
- Try
- B(G);CHECK
- Vars
- S(h);XB(G)::QAB(A)
- Refutation
- K(e);S_FLIGHT
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(f);N_GUARD::S(F),XS(f)
- S(f);N_GUARD::S(F)
- P(g);N_GUARD::S(F)
- Refutation
- P(c);
- Try
- Q(A);XB(a)
- Threat
- DUALS(2)
- Vars
- S(f);N_GUARD::S(F),XS(f)
- S(f);N_GUARD::S(F)
- P(g);N_GUARD::S(F)
- Refutation
- P(c);
- Try
- Q(A);CHECK
- Refutation
- S(h);XQ(A)
- Try
- P(B);XP(b)
- Vars
- B(a);OGATE,XP(C)::QAB(A)
- P(c);OGATE,XP(B)::QAR2(A),XP(c)
- S(h);N_GUARD,SBLOCK::B(G)
- B(a);OGATE::QAB(A)
- S(f);N_GUARD::S(F),XS(f)
- S(f);N_GUARD::S(F)
- S(h);N_GUARD::QAB(A)
- S(h);N_GUARD::QAB(A),XS(h)
- P(g);N_GUARD::S(F)
- Refutation
- P(c);
- Try
- Actual
- P(C);
- Vars
- B(a);OGATE,XR(D)::QAB(A)
- S(f);XP(C)::S(F),XS(f)
- P(b);OGATE,XP(B)::QAB1(A)
- P(c);N_GUARD::QAR2(A),XP(b)
- S(h);N_GUARD,SBLOCK::B(G)
- B(a);OGATE::QAB(A)
- S(f);N_GUARD::R1(D)
- S(f);N_GUARD::R1(D),XS(f)
- S(h);N_GUARD::QAB(A)
- S(h);N_GUARD::QAB(A),XS(h)
- P(b);OGATE::QAB1(A)
- P(g);N_GUARD::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).