MESON Chess Problem Database

Problem Display
PID: 147038 (2b1k1nn/3pPp1N/p5N1/K2R1R2/8/8/8/4Q3 w - - 0 1)

Whitehead, Cyril

2/3 Prize, Australian Chess Problem Magazine TT, 1995-1996

2b1k1nn/3pPp1N/p5N1/K2R1R2/8/8/8/4Q3

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Sxf6#
    • 1...Sh6
      • 2.Sf6#
    • 1...Sxe7
      • 2.Qxe7#
    • 1...fxg6
      • 2.Rf8#
  • Keys
    • 1.Qe6!
      • 1...Sxe7
        • 2.Qxe7#
      • 1...Sxg6
        • 2.Qxf7#
      • 1...dxe6
        • 2.Rd8#
      • 1...fxe6
        • 2.Rf8#
      • 1...fxg6
        • 2.Rf8#
      • 1...Bb7
        • 2.Qxd7#
      • 1...Sf6
        • 2.Sxf6#
      • 1...Sh6
        • 2.Sf6#
      • 1...d6
        • 2.Qxc8#
      • 1...f6
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD::S(G),XS(f)
    • S(f);N_GUARD::S(G)
    • S(f);OGATE,P_SPINS(f),XP(F)::QAR1(A),XS(f)
    • P(c);OGATE,XS(E)::R1(D)
  • Actual
    • Q(A);
    • Vars
      • S(f);OGATE,P_SPINS(f),XP(F)::QAR1(A),XS(f)
      • S(g);N_GUARD,XS(E)::QAB1(A),XP(c)
      • P(b);OGATE,XQ(A)::R1(C)
      • P(c);OGATE,XQ(A)::R1(D)
      • P(c);OGATE,XS(E)::R1(D)
      • B(d);N_GUARD::QAB1(A),XP(b)
      • S(f);N_GUARD::S(G),XS(f)
      • S(f);N_GUARD::S(G)
      • P(b);OGATE::QAR2(A),XB(d)
      • P(c);OGATE::QAR2(A),XS(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).