MESON Chess Problem Database

Problem Display
PID: 271421 (8/7Q/3n4/2p1N3/b1PkBP2/2rp4/3P3K/8 w - - 0 1)

Luukkonen, Emil

Probleemblad, 1951

8/7Q/3n4/2p1N3/b1PkBP2/2rp4/3P3K/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc4
      • 2.Sf3#
    • 1...Sxc4
      • 2.Sf3#
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sf3#
      • 1...Rxc4
        • 2.Qxd3#
      • 1...Sxc4
        • 2.Qe4#
      • 1...Bd1
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);SBLOCK,XP(C)::S(F)
    • S(f);SBLOCK,XP(C)::S(F)
  • Actual
    • B(D);
    • Threat
      • S(F)
    • Vars
      • R(a);N_GUARD,XP(C)::QAR1(G),XP(b)
      • S(f);N_GUARD,XP(C)::QAR1(G)
      • B(c);N_GUARD::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).