MESON Chess Problem Database

Problem Display
PID: 187700 (qrb3Q1/p2BB1K1/5P2/3P4/2k5/5N2/p3P3/3N4 w - - 0 1)

van Dijk, Johannes

Alkmaarsche Courant, 1909

qrb3Q1/p2BB1K1/5P2/3P4/2k5/5N2/p3P3/3N4

#2

9 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qd3#
      • 1...Kb3
        • 2.Sd2#
        • 2.Qd3#
      • 1...Kxd5
        • 2.Se3#
        • 2.Qd3#
      • 1...Qxd5
        • 2.Qc2#
      • 1...Rb3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Actual
    • Q(I);
    • Threat
      • QAB1(I)
    • Vars
      • Q(d);SBLOCK,XP(D)::QAR2(I)
      • R(e);SBLOCK::QAR2(I)
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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).