MESON Chess Problem Database

Problem Display
PID: 143184 (8/6Qn/1pppN3/2Nk4/2rp4/1B4K1/n3P3/b7 w - - 0 1)

Evans, TC

Social Chess Quarterly (The), 1934

8/6Qn/1pppN3/2Nk4/2rp4/1B4K1/n3P3/b7

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Qxd4#
    • 1...Sg5
      • 2.Qxg5#
    • 1...Sf6
      • 2.Qg5#
    • 1...Sf8
      • 2.Qg5#
    • 1...d3
      • 2.e4#
  • Keys
    • 1.Kf4!
      • threat
        • 2.Qg2#
      • 1...d3+
        • 2.e4#
      • 1...bxc5
        • 2.Sc7#
      • 1...dxc5
        • 2.Qe5#
        • 2.Qd7#
      • 1...Sc3
        • 2.Qxd4#
      • 1...Sg5
        • 2.Qxg5#
      • 1...Sf6
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(b);S_CUTB(a)::QAR1(F),XP(d)
    • S(i);N_GUARD::QAR(F),XS(i)
    • S(i);N_GUARD::QAR(F)
    • P(d);N_GUARD::P(A)
  • Actual
    • K(C);S_FLIGHT
    • Threat
      • QAB(F)
    • Vars
      • P(d);CHECK,N_GUARD::P(A)
      • P(f);SBLOCK,XS(D)::S(E)
      • S(b);S_CUTB(a)::QAR1(F),XP(d)
      • S(i);N_GUARD::QAR(F),XS(i)
      • S(i);N_GUARD::QAR(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).