MESON Chess Problem Database

Problem Display
PID: 120997 (8/3pB3/4P3/1K2k3/8/5Q2/2N5/8 w - - 0 1)

Anonymous

Source?, 0000

8/3pB3/4P3/1K2k3/8/5Q2/2N5/8

#2

5 + 2

3713 Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe3+?
      • 1...Kd5
        • 2.Sb4#
      • 1...Kf5!
    • 1.Qf6+?
      • 1...Kd5
        • 2.Qf5#
      • 1...Ke4!
  • Keys
    • 1.Sd4!
      • 1...Kxd4
        • 2.Bf6#
      • 1...dxe6
        • 2.Sc6#
      • 1...d5
        • 2.Qe3#
      • 1...d6
        • 2.Bf6#

This anticipates 11235(1937)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::S(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT,XS(A)::B(E)
      • P(b);N_GUARD,SBLOCK,XP(D)::S(A)
      • P(b);SBLOCK::QAR2(B)
      • P(b);SBLOCK::B(E)
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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).