MESON Chess Problem Database

Problem Display
PID: 217612 (8/1p6/QN2p3/5R2/1P1pk3/4p1PB/8/5K2 w - - 0 1)

Baird, Edith Elina Helen (Mrs WJ)

British Chess Magazine, 1920

8/1p6/QN2p3/5R2/1P1pk3/4p1PB/8/5K2

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...e2+
      • 2.Qxe2#
    • 1...d3
      • 2.Qc4#
  • Tries
    • 1.Qb5?
      • threat
        • 2.Bg2#
        • 2.Rf4#
      • 1...e2+
        • 2.Qxe2#
      • 1...exf5
        • 2.Bg2#
        • 2.Qxf5#
      • 1...d3
        • 2.Rf4#
        • 2.Qc4#
        • 2.Qe5#
      • 1...e5!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sc5#
        • 2.Sf6#
      • 1...e2+
        • 2.Qxe2#
      • 1...exf5
        • 2.Bg2#
      • 1...bxa6
        • 2.Sc5#
      • 1...d3
        • 2.Qc4#
      • 1...e5
        • 2.Sf6#
      • 1...b5
        • 2.Sc5#
      • 1...b6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK,OGATEB::QAR2(F),XP(a)
    • P(b);OGATEB::QAR2(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK,OGATEB::QAR2(F),XP(a)
      • Refutation
        • P(d);
  • Actual
    • S(G);
    • Threat
      • DUALS(2)
    • Vars
      • P(a);CHECK,OGATEB::QAR2(F),XP(a)
      • P(d);SBLOCK,XR(E)::B(C)
      • P(e);XQ(F)::S(G)
      • P(b);OGATEB::QAR2(F)
      • P(d);::S(G)
      • P(e);::S(G)
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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).