MESON Chess Problem Database

Problem Display
PID: 45555 (2N5/6Qp/2b2rp1/3pPP2/RB1kn2N/1P1p1R2/4PP2/K7 w - - 0 1)

Stevenson, Edward

Double Pin-Mate after a Black King Move, 1980

2N5/6Qp/2b2rp1/3pPP2/RB1kn2N/1P1p1R2/4PP2/K7

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf5
      • 2.Rxd3#
      • 2.e3#
    • 1...Rd6
      • 2.Rxd3#
      • 2.e3#
    • 1...Re6
      • 2.Rxd3#
      • 2.e3#
    • 1...Rf7
      • 2.Rxd3#
      • 2.e3#
    • 1...Rf8
      • 2.Rxd3#
      • 2.e3#
  • Tries
    • 1.Bd6+?
      • 1...Bxa4
        • 2.Rxd3#
      • 1...Kc3!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sf3#
      • 1...Kxe5
        • 2.Bd6#
      • 1...Rxf5
        • 2.Rxd3#
      • 1...Sxf2
        • 2.Qa7#
      • 1...Sd2
        • 2.Qa7#
      • 1...Sg5
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • B(e);XR(F)::R1(E),XP(a)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • S(H)
    • Vars
      • K(b);P_SPINR(f),P_SPINS(c),S_FLIGHT,XP(I)::B(G)
      • R(f);XP(J)::R1(E),XP(a)
      • S(c);N_GUARD,XP(C)::QAB(K)
      • S(c);N_GUARD::QAB(K)
HTML5 logo

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).