MESON Chess Problem Database

Problem Display
PID: 9650 (8/3Bpp2/5p1Q/R3B3/p1k2N2/K2n3p/1P5r/5b2 w - - 0 1)

Chandler, Guy Wills

Reading Observer, 1907

8/3Bpp2/5p1Q/R3B3/p1k2N2/K2n3p/1P5r/5b2

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Bb5#
    • 1...f5
      • 2.Qa6#
  • Tries
    • 1.Qh7?
      • threat
        • 2.Qe4#
      • 1...Re2
        • 2.Qxd3#
      • 1...Bg2
        • 2.Qxd3#
      • 1...Sf2
        • 2.Qc2#
      • 1...Sc5
        • 2.Bb5#
      • 1...f5!
  • Keys
    • 1.Qg6!
      • threat
        • 2.Qe4#
      • 1...fxg6
        • 2.Be6#
      • 1...Re2
        • 2.Qxd3#
      • 1...Bg2
        • 2.Qxd3#
      • 1...Sf2
        • 2.Qc2#
      • 1...Sc5
        • 2.Bb5#
      • 1...f5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(G)
    • P(g);OGATE::QAB(F)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F)
      • Vars
        • R(b);S_CUTB(a)::QAB1(F),XS(c)
        • B(a);N_GUARD::QAB1(F),XS(c)
        • S(c);OGATE::QAR2(F)
        • S(c);SBLOCK::B(G)
      • Refutation
        • P(g);
  • Actual
    • Q(F);
    • Threat
      • QAR2(F)
    • Vars
      • P(i);N_GUARD,XQ(F)::B(G)
      • R(b);S_CUTB(a)::QAB1(F),XS(c)
      • B(a);N_GUARD::QAB1(F),XS(c)
      • S(c);OGATE::QAR2(F)
      • S(c);SBLOCK::B(G)
      • P(g);OGATE::QAB(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).