MESON Chess Problem Database

Problem Display
PID: 63212 (3Bn2Q/1Nn2p2/1pP1k1P1/1P1p1pP1/3pr3/3Bp3/4K1N1/5R2 w - - 0 1)

Widdows, TEW

Chess, 1945

3Bn2Q/1Nn2p2/1pP1k1P1/1P1p1pP1/3pr3/3Bp3/4K1N1/5R2

#2

11 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Sxf4#
    • 1...Rg4
      • 2.Bxf5#
    • 1...Rh4
      • 2.Bxf5#
    • 1...Re5
      • 2.Sf4#
    • 1...Sxb5
      • 2.Qxe8#
    • 1...Sa6
      • 2.Qxe8#
    • 1...Sa8
      • 2.Qxe8#
    • 1...Sd6
      • 2.Qf6#
    • 1...Sf6
      • 2.Qxf6#
  • Tries
    • 1.Qe5+?
      • 1...Rxe5
        • 2.Sf4#
      • 1...Kxe5!
  • Keys
    • 1.Bf6!
      • 1...Sxb5
        • 2.Qxe8#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...fxg6
        • 2.Qg8#
      • 1...f4
        • 2.Qh3#
      • 1...Rf4
        • 2.Sxf4#
      • 1...Rg4
        • 2.Bxf5#
      • 1...Rh4
        • 2.Bxf5#
      • 1...Re5
        • 2.Sf4#
      • 1...Sa6
        • 2.Qxe8#
      • 1...Sa8
        • 2.Qxe8#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sg7
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(c);N_GUARD::S(C),XR(c)
    • R(c);OGATE::B(D),XP(e)
    • R(c);N_GUARD::S(C)
    • S(h);N_GUARD,XP(E)::QAR2(K),XS(j)
    • S(h);N_GUARD::QAR2(K),XS(j)
    • S(j);N_GUARD::QAR1(K)
    • S(j);N_GUARD::QAR1(K),XS(j)
  • Tries
    • Try
      • Q(K);CHECK
      • Vars
        • R(c);SBLOCK,XQ(K)::S(C)
      • Refutation
        • K(g);P-FLIGHT,XQ(K)
  • Actual
    • B(J);
    • Vars
      • S(h);N_GUARD,XP(E)::QAR2(K),XS(j)
      • S(j);OGATE,XB(J)::QAR1(K),XS(j)
      • P(i);OGATEB,XP(H)::QAB(K)
      • P(e);OGATEB::QAB(K)
      • R(c);N_GUARD::S(C),XR(c)
      • R(c);OGATE::B(D),XP(e)
      • R(c);N_GUARD::S(C)
      • S(h);N_GUARD::QAR2(K),XS(j)
      • S(j);SBLOCK::S(I)
      • S(j);OGATE::QAB(K)
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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).