MESON Chess Problem Database

Problem Display
PID: 188647 (2K1b3/3pp2n/5k2/3RNP2/4Q3/1BB3n1/5b2/5R2 w - - 0 1)

White, John W

To Alain White, 1945

2K1b3/3pp2n/5k2/3RNP2/4Q3/1BB3n1/5b2/5R2

#2

8 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Sxd7+?
      • 1...Kf7
        • 2.Qe6#
      • 1...Kg5!
  • Keys
    • 1.Sg6+!
      • 1...Kg5
        • 2.Qh4#
      • 1...Kf7
        • 2.Rxd7#
      • 1...Bd4
        • 2.Qxe7#
      • 1...e5
        • 2.fxe5 ep#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK,XP(d)
      • Vars
        • K(c);P-FLIGHT::QAB1(D)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(F);CHECK
    • Vars
      • K(c);S_FLIGHT::QAB1(D)
      • K(c);P-FLIGHT::B(B)+R(E),XP(d)
      • B(a);P_SPINB(a)::QAB1(D),XP(e)
      • P(e);OGATE,P_SPINP(e)::B(C)+P(G),XP(e),EP
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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).