MESON Chess Problem Database

Problem Display
PID: 169282 (8/7P/8/8/8/2K5/2p5/kNR5 w - - 0 1)

Lind, Ingemar

20/21 Place, SuperProblem 190. TT, 2017

8/7P/8/8/8/2K5/2p5/kNR5

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.h8R?
      • threat
        • 2.Ra8#
      • 1...Ka2
        • 2.Ra8#
      • 1...cxb1S+!
  • Keys
    • 1.h8Q!
      • threat
        • 2.Kb3#
        • 2.Qa8#
      • 1...cxb1S+
        • 2.Kb3#
      • 1...Ka2
        • 2.Qa8#
      • 1...cxb1Q
        • 2.Qa8#
      • 1...cxb1R
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(D);
      • Threat
        • R(D)
      • Vars
        • K(a);P-FLIGHT::R(D)
      • Refutation
        • P(b);CHECK,P_SPINS(b),XS(A)
  • Actual
    • P(D);
    • Threat
      • DUALS(2)
    • Vars
      • P(b);CHECK,P_SPINS(b),XS(A)::QAB(D)+K(C)
      • K(a);P-FLIGHT::QAR(D)
      • P(b);P_SPINQ(b),XS(A)::QAB(D)
      • P(b);P_SPINR(b),XS(A)::QAB(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).