MESON Chess Problem Database

Problem Display
PID: 156781 (8/4n3/2p2p1r/K1Q4R/b3N1kP/4P3/2B2P1R/8 w - - 0 1)

White, Alain Campbell

British Chess Magazine, 1905

8/4n3/2p2p1r/K1Q4R/b3N1kP/4P3/2B2P1R/8

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sg6
      • 2.Qf5#
    • 1...Sc8
      • 2.Qf5#
    • 1...Sg8
      • 2.Qf5#
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qe2#
      • 1...Rxh5+
        • 2.Sg5#
      • 1...Kf3
        • 2.Sd2#
      • 1...Kxh5
        • 2.Sg3#
      • 1...Bb5
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(f);N_GUARD::QAB1(H),XS(f)
    • S(f);N_GUARD::QAB1(H)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • R(e);CHECK,SBLOCK,XR(I)::QAR(H)+S(E)
      • K(b);S_FLIGHT::S(E)
      • K(b);S_FLIGHT,XR(I)::S(E)
      • B(a);N_GUARD::B(A)
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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).