MESON Chess Problem Database

Problem Display
PID: 51553 (1BB1q1RR/8/4nrN1/8/5PkN/3P2p1/6P1/4K3 w - - 0 1)

Rendall, JL

The Guardian, 1964

1BB1q1RR/8/4nrN1/8/5PkN/3P2p1/6P1/4K3

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4
      • 2.Se5#
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se3#
      • 1...Sxf4+
        • 2.Se5#
      • 1...Kxf5
        • 2.Sh4#
      • 1...Rxf5
        • 2.Rh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(d);SBLOCK,XP(D)::R(I)+S(F),DCHECK
  • Actual
    • S(E);N_PINS(c)
    • Threat
      • S(E)
    • Vars
      • S(c);CHECK,SBLOCK,XP(D)::R(I)+S(F),DCHECK
      • K(b);P_SPINS(c),S_FLIGHT,XS(E)::S(F)
      • R(d);SBLOCK,XS(E)::R1(J)
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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).