MESON Chess Problem Database

Problem Display
PID: 11070 (6b1/1p2R3/prkpp1P1/RqN4K/B2pP2p/1N4br/5p1p/7Q w - - 0 1)

Rains, Cyril George

Chess, 1936

6b1/1p2R3/prkpp1P1/RqN4K/B2pP2p/1N4br/5p1p/7Q

#2

9 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...dxc5
      • 2.e5#
  • Keys
    • 1.Qc1!
      • threat
        • 2.Sxd4#
      • 1...Qxa4
        • 2.Sxa4#
      • 1...dxc5
        • 2.Qxc5#
      • 1...d5
        • 2.Sxb7#
      • 1...Be5
        • 2.Sd3#
      • 1...d3
        • 2.Sd4#
      • 1...e5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • P(k);N_GUARD,XS(F)::QAB(A)+P(D)
  • Actual
    • Q(A);
    • Threat
      • S(B),XP(e)
    • Vars
      • Q(g);N_PINS(F),N_SPINQ(g),XB(C)::QAR(A)+S(F),XQ(g)
      • P(k);OGATE,P_SPINP(k),XS(F)::QAR1(A),XP(k)
      • P(k);N_PINS(F)::QAR(A)+S(F),XP(m)
      • B(c);N_PINS(F)::QAR(A)+S(F)
      • P(e);::S(B)
      • P(l);N_PINS(F)::QAR(A)+S(F)
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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).