MESON Chess Problem Database

Problem Display
PID: 233687 (8/2N5/6pr/nK2pPp1/1b2k1B1/4P3/4Q3/8 w - - 0 1)

Howard, David M

Problem Observer, 2021

8/2N5/6pr/nK2pPp1/1b2k1B1/4P3/4Q3/8

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...gxf5
      • 2.Bf3#
  • Tries
    • 1.Se8?
      • threat
        • 2.Sf6#
      • 1...Kd5
        • 2.Qd3#
      • 1...gxf5
        • 2.Bf3#
      • 1...Be7!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf6#
      • 1...Kxd5
        • 2.Qd3#
      • 1...gxf5
        • 2.Bf3#
      • 1...Be7
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(f);SBLOCK,XP(E)::B(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
        • P(f);SBLOCK,XP(E)::B(C)
      • Refutation
        • B(a);
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(b);S_FLIGHT,XS(F)::QAR2(A)
      • P(f);SBLOCK,XP(E)::B(C)
      • B(a);N_GUARD::S(F)
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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).