MESON Chess Problem Database

Problem Display
PID: 78428 (5R1r/2K2N2/4pp2/4pQ1p/p3Pb2/1R2Bkp1/5N2/5B2 w - - 0 1)

Grossi, Damien

Problem (Zagreb), 1953

5R1r/2K2N2/4pp2/4pQ1p/p3Pb2/1R2Bkp1/5N2/5B2

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf8
      • 2.Qxh5#
    • 1...a3
      • 2.Bd4#
      • 2.Bc5#
      • 2.Bb6#
      • 2.Ba7#
    • 1...h4
      • 2.Qg4#
  • Keys
    • 1.Qxe5!
      • threat
        • 2.Qxf4#
      • 1...Bxe5+
        • 2.Sxe5#
      • 1...Bxe3
        • 2.Qxf6#
      • 1...fxe5
        • 2.Sxe5#
        • 2.Sg5#
      • 1...Bg5
        • 2.Sxg5#
      • 1...Bh6
        • 2.Qxh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(i);N_GUARD,XR(I)::QAB(F),XP(f)
    • P(f);N_GUARD::QAB1(F)
  • Actual
    • Q(F);N_PINB(d),P_SPINQ(F),XP(e)
    • Threat
      • QAR1(F),XB(d)
    • Vars
      • B(d);CHECK,XQ(F)::S(H),XB(d)
      • B(d);N_PINQ(F),P_SPINB(d),XB(D)::QAR(F),XP(h)
      • B(d);N_GUARD,N_PINQ(F),S_CUTP(h)::S(H),XB(d)
      • B(d);N_PINQ(F)::QAB(F),XP(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).