MESON Chess Problem Database

Problem Display
PID: 45553 (8/4p3/2P1P3/N2kP3/NRrP3Q/3n1P2/4P3/Kb1R4 w - - 0 1)

Stevenson, Edward

Double Pin-Mate after a Black King Move, 1980

8/4p3/2P1P3/N2kP3/NRrP3Q/3n1P2/4P3/Kb1R4

#2

12 + 5

SOLUTION

  • SOUND
  • Keys
    • 1.Qxe7!
      • threat
        • 2.Qd6#
        • 2.Qd7#
      • 1...Kxd4
        • 2.Qc5#
      • 1...Rxd4
        • 2.Qd6#
      • 1...Rxc6
        • 2.e4#
      • 1...Sxe5
        • 2.Sb6#
      • 1...Sc5
        • 2.Sb6#
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(H);XP(e)
    • Threat
      • DUALS(2)
    • Vars
      • K(d);P-FLIGHT,P_SPINR(c),P_SPINS(b),XP(G)::QAB1(H)
      • R(c);XP(G)::QAR1(H)
      • R(c);XP(K)::P(C)
      • S(b);XP(J)::S(E)
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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).