MESON Chess Problem Database

Problem Display
PID: 264012 (1b6/r1p5/q1k2NK1/1b2P2R/p1p1N2P/r1p1P2B/1n3nQ1/8 w - - 0 1)

Haring, Jacobus

Tijdschrift vd KNSB, 1981

1b6/r1p5/q1k2NK1/1b2P2R/p1p1N2P/r1p1P2B/1n3nQ1/8

#2

9 + 12

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sxf2#
      • 1...Kd5+
        • 2.Sef6#
      • 1...Kb7+
        • 2.Sd6#
      • 1...Sxh3
        • 2.Sec5#
        • 2.Sef6#
      • 1...Sxe4
        • 2.Qxe4#
      • 1...Sg4
        • 2.Sec5#
        • 2.Sef6#
      • 1...Sfd1
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sec5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sef6#
      • 1...Sh1
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sec5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sef6#
      • 1...Sfd3
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sxc3#
        • 2.Sg3#
        • 2.Sec5#
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sef6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(H);
    • Threat
      • QAB(A)+S(D),XS(b)
    • Vars
      • K(i);CHECK,S_FLIGHT::QAB(A)+S(D),DCHECK
      • S(b);OGATE,P_SPINS(b),XS(D)::QAB(A),XS(b)
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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).