MESON Chess Problem Database

Problem Display
PID: 23044 (8/6pp/5p2/5QPk/8/7K/8/8 w - - 0 1)

Lincoln, Robert A

Fun with Chess Miniatures, 1996

8/6pp/5p2/5QPk/8/7K/8/8

#2

3 + 4

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...fxg5
      • 2.Qxh7#
    • 1...g6
      • 2.Qg4#
    • 1...h6
      • 2.g6#
  • Tries
    • 1.gxf6+?
      • 1...g5
        • 2.Qxh7#
      • 1...Kh6!
  • Keys
    • 1.Kg3!
      • 1...fxg5
        • 2.Qxh7#
      • 1...g6
        • 2.Qg4#
      • 1...h6
        • 2.g6#

Anticipated by 80737(1963)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);P_SPINP(b),SBLOCK,XP(C)::QAR2(B),XP(d)
    • P(c);SBLOCK::QAB1(B)
    • P(d);SBLOCK::QAR(B)+P(C)
  • Tries
    • Try
      • P(C);CHECK,XP(b)
      • Vars
        • P(c);P_SPINP(c),SBLOCK::QAR2(B),XP(d)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • P(b);P_SPINP(b),SBLOCK,XP(C)::QAR2(B),XP(d)
      • P(c);SBLOCK::QAB1(B)
      • P(d);SBLOCK::QAR(B)+P(C)
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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).