MESON Chess Problem Database

Problem Display
PID: 224703 (4K3/8/7P/4pknP/2Q3N1/6Pp/1B2P2P/3B4 w - - 0 1)

Windle, Lee

The Sunny South, 1888

4K3/8/7P/4pknP/2Q3N1/6Pp/1B2P2P/3B4

#2

10 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Se3#
  • Tries
    • 1.Bc2+?
      • 1...e4
        • 2.Se3#
      • 1...Se4!
    • 1.Qf4+?
      • 1...Ke6
        • 2.Qxe5#
      • 1...exf4!
  • Keys
    • 1.Qg8!
      • 1...Ke4
        • 2.Bc2#
      • 1...Kxg4
        • 2.e4#
      • 1...Se4
        • 2.Qg6#
      • 1...Sf3
        • 2.Qg6#
      • 1...Se6
        • 2.Qg6#
      • 1...Sf7
        • 2.Qg6#
      • 1...Sh7
        • 2.Qg6#
      • 1...e4
        • 2.Se3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(b);::S(G)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • P(b);P_SPINP(b)::S(G)
      • Refutation
        • S(d);P_SPINS(d)
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(F),XP(b)
      • Refutation
        • P(b);XQ(F)
  • Actual
    • Q(F);
    • Vars
      • K(c);S_FLIGHT::B(A)
      • K(c);P_SPINS(d),S_FLIGHT,XS(G)::B(A)+P(C)
      • S(d);SBLOCK::QAB1(F)
      • S(d);::QAB1(F)
      • P(b);SBLOCK::S(G)
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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).