MESON Chess Problem Database

Problem Display
PID: 263777 (4r1b1/4pPB1/2Q4K/1p2N3/3k4/3p1p2/2pp1p2/8 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1933

4r1b1/4pPB1/2Q4K/1p2N3/3k4/3p1p2/2pp1p2/8

#2

5 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sg6+?
      • 1...Ke3
        • 2.Qe6#
      • 1...e5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Sd7#
      • 1...Kc3
        • 2.Sc6#
      • 1...Ke3
        • 2.Sg6#
      • 1...Ke4
        • 2.Sg6#
      • 1...Kc5
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(f);N_GUARD,S_FLIGHT::QAR(B)
      • Refutation
        • P(h);P_SPINP(h)
  • Actual
    • Q(B);
    • Threat
      • B(E)+S(A)
    • Vars
      • K(f);N_GUARD,S_FLIGHT::B(E)+S(A)
      • K(f);N_GUARD,S_FLIGHT::QAR(B)+S(A)
      • K(f);N_GUARD,P-FLIGHT::QAR(B)+S(A)
      • K(f);N_GUARD,S_FLIGHT::S(A),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).