MESON Chess Problem Database

Problem Display
PID: 208896 (2B5/Bpb1r3/5pQ1/p3n1R1/N1k1N2R/K7/3pp3/8 w - - 0 1)

Wainwright, Joseph CJ

Detroit Free Press, 1876

2B5/Bpb1r3/5pQ1/p3n1R1/N1k1N2R/K7/3pp3/8

#2

8 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sf2#
    • 1...Sd3
      • 2.Sxd2#
      • 2.Sd6#
    • 1...Sf3
      • 2.Sb2#
      • 2.Sxd2#
      • 2.Sd6#
    • 1...Sg4
      • 2.Sb2#
      • 2.Sxd2#
    • 1...Sc6
      • 2.Sb2#
      • 2.Sxd2#
      • 2.Sd6#
    • 1...Sxg6
      • 2.Sb2#
    • 1...Sd7
      • 2.Sb2#
      • 2.Sxd2#
      • 2.Sd6#
    • 1...Sf7
      • 2.Sb2#
      • 2.Sxd2#
      • 2.Sd6#
  • Tries
    • 1.Sxf6+?
      • 1...Sg4
        • 2.Qc2#
      • 1...Kb5!
  • Keys
    • 1.Bxb7!
      • threat
        • 2.Sd6#
      • 1...Bd6+
        • 2.Sxd6#
      • 1...Kd3
        • 2.Sf2#
      • 1...Kb5
        • 2.Sec3#
      • 1...Sxg6
        • 2.Sb2#
        • 2.Ba6#
      • 1...Sg4
        • 2.Sb2#
        • 2.Sxd2#
        • 2.Ba6#
      • 1...f5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(c);S_FLIGHT::QAB(F)+S(C),DCHECK
    • S(e);XQ(F)::S(B)
  • Tries
    • Try
      • S(C);CHECK,XP(f)
      • Vars
        • S(e);P_SPINS(e)::QAR2(F)
      • Refutation
        • K(c);P_SPINS(e),S_FLIGHT
  • Actual
    • B(H);XP(g)
    • Threat
      • R(D)+S(C),DCHECK
    • Vars
      • B(h);CHECK::R(D)+S(C),DCHECK,XB(h)
      • K(c);S_FLIGHT::QAB(F)+S(C),DCHECK
      • K(c);P_SPINS(e),S_FLIGHT::S(C)
      • P(f);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).