MESON Chess Problem Database
Problem Display
PID: 261889 (8/1K6/2PpP3/RPNkNPQ1/1npPpnB1/2Pr3p/8/8 w - - 0 1)
Barnes, Barry Peter
Lipton, Michael
Die Schwalbe, 1961
#2
12 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...e3
- 2.Bf3#
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Qd8#
- 1...e3
- Tries
- 1.Sb3?
- threat
- 2.b6#
- 1...Sxc6
- 2.bxc6#
- 1...dxe5
- 2.Qd8#
- 1...e3
- 2.Bf3#
- 1...Sa6
- 2.bxa6#
- 1...Sxe6!
- threat
- 1.Sa4?
- threat
- 2.Sb6#
- 2.b6#
- 1...Rxd4
- 2.b6#
- 1...Sxc6
- 2.Sb6#
- 2.bxc6#
- 1...Sxe6
- 2.Sb6#
- 1...dxe5
- 2.Qd8#
- 1...e3
- 2.Bf3#
- 1...Sa6
- 2.Sb6#
- 2.bxa6#
- 1...Rxc3!
- threat
- 1.Sa6?
- threat
- 2.Sxb4#
- 2.Sc7#
- 2.b6#
- 1...Rxd4
- 2.b6#
- 1...Sxa6
- 2.bxa6#
- 1...Sxc6
- 2.Sc7#
- 2.bxc6#
- 1...Sxe6
- 2.Sxb4#
- 1...dxe5
- 2.Qd8#
- 1...e3
- 2.Bf3#
- 1...Sa2
- 2.Sc7#
- 2.b6#
- 1...Sc2
- 2.Sc7#
- 2.b6#
- 1...Rxc3!
- threat
- 1.Sf3?
- threat
- 2.f6#
- 1...Sxe6
- 2.fxe6#
- 1...dxc5
- 2.Qd8#
- 1...Sg6
- 2.fxg6#
- 1...Sxc6!
- threat
- 1.Sg6?
- threat
- 2.Sxf4#
- 2.Se7#
- 2.f6#
- 1...Rxd4
- 2.f6#
- 1...Sxc6
- 2.Sxf4#
- 1...Sxe6
- 2.Se7#
- 2.fxe6#
- 1...Sxg6
- 2.fxg6#
- 1...dxc5
- 2.Qd8#
- 1...Rf3
- 2.Se7#
- 2.f6#
- 1...Se2
- 2.Se7#
- 2.f6#
- 1...Sg2
- 2.Se7#
- 2.f6#
- 1...Sh5
- 2.Se7#
- 2.f6#
- 1...Rxc3!
- threat
- 1.b6?
- threat
- 2.Sb3#
- 2.Scxd3#
- 2.Sa4#
- 2.Sa6#
- 2.Scd7#
- 1...Rxc3
- 2.Sb3#
- 1...Rxd4
- 2.Sb3#
- 2.Scd3#
- 2.Sa4#
- 2.Sa6#
- 2.Scd7#
- 1...Sxe6
- 2.Sxe6#
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Qd8#
- 1...Rd1
- 2.Sb3#
- 2.Scd3#
- 2.Sa4#
- 2.Sa6#
- 2.Scd7#
- 1...Rd2
- 2.Sb3#
- 2.Scd3#
- 2.Sa4#
- 2.Sa6#
- 2.Scd7#
- 1...Re3
- 2.Sb3#
- 2.Scd3#
- 2.Sa4#
- 2.Sa6#
- 2.Scd7#
- 1...Rf3
- 2.Sb3#
- 2.Scd3#
- 2.Sa4#
- 2.Sa6#
- 2.Scd7#
- 1...Rg3
- 2.Sb3#
- 2.Scd3#
- 2.Sa4#
- 2.Sa6#
- 2.Scd7#
- 1...Sa6
- 2.Sxa6#
- 1...e3
- 2.Bf3#
- 1...Sxc6!
- threat
- 1.Sb3?
- Keys
- 1.f6!
- threat
- 2.Sexd3#
- 2.Sf3#
- 2.Sg6#
- 2.Sed7#
- 2.Sf7#
- 1...Rxc3
- 2.Sf3#
- 1...Rxd4
- 2.Sed3#
- 2.Sf3#
- 2.Sg6#
- 2.Sed7#
- 2.Sf7#
- 1...Sxc6
- 2.Sxc6#
- 1...Sxe6
- 2.Bxe6#
- 1...dxc5
- 2.Sf7#
- 1...dxe5
- 2.Qxe5#
- 1...Rd1
- 2.Sed3#
- 2.Sf3#
- 2.Sg6#
- 2.Sed7#
- 2.Sf7#
- 1...Rd2
- 2.Sed3#
- 2.Sf3#
- 2.Sg6#
- 2.Sed7#
- 2.Sf7#
- 1...Re3
- 2.Sed3#
- 2.Sf3#
- 2.Sg6#
- 2.Sed7#
- 2.Sf7#
- 1...Rf3
- 2.Sed3#
- 2.Sxf3#
- 2.Sg6#
- 2.Sed7#
- 2.Sf7#
- 1...Rg3
- 2.Sed3#
- 2.Sf3#
- 2.Sg6#
- 2.Sed7#
- 2.Sf7#
- 1...Sg6
- 2.Sxg6#
- threat
- 1.f6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- P(e);OGATEB::B(C)
- P(h);OGATEB,XS(F)::QAR(I)
- P(h);OGATEB,XS(G)::QAR(I)
- Tries
- Try
- S(F);
- Threat
- R(D)+P(E)
- Vars
- S(c);OGATE,XP(J)::R(D)+P(E),XS(c)
- P(h);OGATEB,XS(G)::QAR(I)
- P(e);OGATEB::B(C)
- S(c);OGATE::R(D)+P(E),XS(c)
- Refutation
- S(f);XP(K)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(a);XP(B)::R(D)+P(E)
- S(f);XP(K)::S(F)
- P(h);OGATEB,XS(G)::QAR(I)
- P(e);OGATEB::B(C)
- Refutation
- R(a);XP(A)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(a);XP(B)::R(D)+P(E)
- S(c);OGATE,XS(F)::R(D)+P(E),XS(c)
- S(f);XP(K)::S(F),XS(c)
- P(h);OGATEB,XS(G)::QAR(I)
- P(e);OGATEB::B(C)
- Refutation
- R(a);XP(A)
- Try
- S(G);
- Threat
- QAR(I)+P(H)
- Vars
- S(f);OGATE,XP(K)::QAR(I)+P(H),XS(f)
- P(h);OGATEB,XS(F)::QAR(I)
- S(f);OGATE::QAR(I)+P(H),XS(f)
- Refutation
- S(c);XP(J)
- Try
- S(G);
- Threat
- DUALS(3)
- Vars
- R(a);XP(B)::QAR(I)+P(H)
- S(c);XP(J)::S(G),XS(f)
- S(f);OGATE,XS(G)::QAR(I)+P(H),XS(f)
- P(h);OGATEB,XS(F)::QAR(I)
- Refutation
- R(a);XP(A)
- Try
- P(E);
- Threat
- DUALS(5)
- Vars
- R(a);XP(A)::R(D)+S(F)
- S(f);XP(K)::R(D)+S(F),XS(f)
- P(h);OGATEB,P_SPINP(h),XS(F)::QAR(I)
- P(h);OGATEB,XS(G)::QAR(I)
- S(c);::R(D)+S(F),XS(c)
- P(e);OGATEB::B(C)
- Refutation
- S(c);XP(J)
- Try
- Actual
- P(H);
- Threat
- DUALS(5)
- Vars
- R(a);XP(A)::QAR(I)+S(G)
- S(c);XP(J)::QAR(I)+S(G),XS(c)
- S(f);OGATE,XP(K)::B(C),XS(f)
- P(h);XS(F)::QAR(I)+S(G)
- P(h);OGATE,P_SPINP(h),XS(G)::QAR1(I),XP(h)
- S(f);::QAR(I)+S(G),XS(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).