MESON Chess Problem Database

Problem Display
PID: 43367 (1B1b4/2npPK2/R1nPp2Q/4kN2/1P1p4/2N5/8/3R3b w - - 0 1)

Stevenson, Edward

Double Pin-Mate after a Black King Move, 1980

1B1b4/2npPK2/R1nPp2Q/4kN2/1P1p4/2N5/8/3R3b

#2

10 + 8

SOLUTION

  • SOUND
  • Keys
    • 1.Sxd4!
      • threat
        • 2.Qh2#
      • 1...Kxd6
        • 2.Sf3#
      • 1...Sxd4
        • 2.Qf6#
      • 1...Sd5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(D);XP(b)
    • Threat
      • QAB(G)
    • Vars
      • K(c);P_SPINP(e),P_SPINS(d),S_FLIGHT,XP(F)::R(A)+S(D)
      • S(d);XS(D)::QAB1(G)
      • S(f);::QAR2(G)
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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).