MESON Chess Problem Database

Problem Display
PID: 214761 (8/8/3pp1N1/1B1k1P2/1P1p4/4p2p/8/1Q1K4 w - - 0 1)

Anonymous

Detroit Free Press, 1877

8/8/3pp1N1/1B1k1P2/1P1p4/4p2p/8/1Q1K4

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qxd3#
    • 1...exf5
      • 2.Qxf5#
    • 1...e5
      • 2.Se7#
  • Tries
    • 1.Qc2?
      • threat
        • 2.Bc6#
        • 2.Qc6#
      • 1...exf5
        • 2.Qxf5#
      • 1...d3
        • 2.Qxd3#
        • 2.Qc4#
      • 1...e2+!
  • Keys
    • 1.Ke2!
      • threat
        • 2.Qh1#
      • 1...d3+
        • 2.Qxd3#
      • 1...exf5
        • 2.Qxf5#
      • 1...e5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB::QAR2(A),XP(c)
    • P(f);OGATE,XP(E)::QAR2(A),XP(f)
    • P(f);SBLOCK::S(F)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);OGATE,XP(E)::QAR2(A),XP(f)
      • Refutation
        • P(a);CHECK
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAB(A)
    • Vars
      • P(c);CHECK,OGATEB::QAR2(A),XP(c)
      • P(f);OGATE,XP(E)::QAR2(A),XP(f)
      • P(f);SBLOCK::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).