MESON Chess Problem Database

Problem Display
PID: 77309 (8/5K2/8/1R1B1Q2/R1q4k/8/5P2/2b2b2 w - - 0 1)

Pelle, Charles

Les Nouveaux Temps, 1943

8/5K2/8/1R1B1Q2/R1q4k/8/5P2/2b2b2

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qg4
      • 2.Qxg4#
  • Tries
    • 1.Rxc4+?
      • 1...Bf4
        • 2.Rxf4#
      • 1...Bxc4!
  • Keys
    • 1.Be6!
      • threat
        • 2.Qh5#
      • 1...Bg5
        • 2.Qxg5#
      • 1...Qf4
        • 2.Qf6#
      • 1...Be2
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(c);N_GUARD,N_PINB(D)::QAR1(E),XQ(c)
  • Tries
    • Try
      • R(B);CHECK,N_SPINB(D),XQ(c)
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::R(B),XB(a)
      • Refutation
        • B(b);P_PINB(D),XR(B)
  • Actual
    • B(D);
    • Threat
      • QAR1(E)
    • Vars
      • B(a);N_GUARD::QAB1(E),XB(a)
      • Q(c);N_PINB(D),P_PINQ(E),S_CUTB(a)::QAB(E)
      • B(b);N_GUARD::QAR1(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).