MESON Chess Problem Database

Problem Display
PID: 17140 (8/p3pQ1B/4N1Nr/1pP1p2P/1r2k1P1/1P1p2n1/3P4/4K3 w - - 0 1)

Larsen, Peder Andreas

3rd Prize, Nordisk Schackforbund, 1903

8/p3pQ1B/4N1Nr/1pP1p2P/1r2k1P1/1P1p2n1/3P4/4K3

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Sxe7#
    • 1...Rd4
      • 2.Sg5#
  • Tries
    • 1.Qf5+?
      • 1...Kd5
        • 2.Sxe7#
      • 1...Sxf5!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qa8#
      • 1...Kf3
        • 2.Sh4#
      • 1...Kd5
        • 2.Sxe7#
      • 1...Rd4
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::S(H),XP(i)
    • R(c);SBLOCK::S(G)
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);P_SPINP(f),S_FLIGHT::S(H),XP(i)
      • Refutation
        • S(b);XQ(I)
  • Actual
    • Q(I);
    • Threat
      • QAB(I)
    • Vars
      • K(d);S_FLIGHT::S(H)
      • K(d);S_FLIGHT::S(H),XP(i)
      • R(c);SBLOCK::S(G)
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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).