MESON Chess Problem Database

Problem Display
PID: 37740 (3Q2q1/B7/5Np1/2n1k3/r1b2p1N/4PK2/B7/b7 w - - 0 1)

Caillaud, Michel

Prize, Cambridge TT, 1985

3Q2q1/B7/5Np1/2n1k3/r1b2p1N/4PK2/B7/b7

#2

7 + 8

3748 FIDE Album (1983-1985) 1992
3335 Cyclone 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.exf4#
    • 1...Bf1
      • 2.Sg4#
      • 2.Bb8#
    • 1...Bd3
      • 2.Sg4#
      • 2.Bb8#
    • 1...Bb5
      • 2.Sg4#
      • 2.Bb8#
    • 1...Ba6
      • 2.Sg4#
      • 2.Bb8#
    • 1...Be6
      • 2.Bb8#
    • 1...Bf7
      • 2.Sg4#
      • 2.Bb8#
    • 1...Se6
      • 2.Sg4#
  • Keys
    • 1.Qe7+!
      • 1...Qe6
        • 2.Bb8#
      • 1...Be6
        • 2.Sg4#
      • 1...Se6
        • 2.exf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(h);SBLOCK::P(B),XP(d)
    • B(c);::B(F)
    • S(e);SBLOCK::S(E)
  • Actual
    • Q(G);CHECK
    • Vars
      • Q(h);P_SPINQ(h)::B(F)
      • B(c);P_SPINB(c)::S(E)
      • S(e);P_SPINS(e)::P(B),XP(d)
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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).