MESON Chess Problem Database

Problem Display
PID: 193567 (8/2p1Q3/2p2p2/1n1kPP2/7R/8/4P3/4K3 w - - 0 1)

van Dijk, Johannes

Algemeen Handelsblad, 1915

8/2p1Q3/2p2p2/1n1kPP2/7R/8/4P3/4K3

#2

6 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Qe6#
  • Tries
    • 1.Qf7+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Kc5!
  • Keys
    • 1.Qb4!
      • 1...Kxe5
        • 2.Qc5#
      • 1...fxe5
        • 2.e4#
      • 1...c5
        • 2.Qe4#
      • 1...Sa3
        • 2.Qd4#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sd6
        • 2.Qd4#
      • 1...Sa7
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(D)::QAR1(F)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);P-FLIGHT,XP(D)::QAR2(F)
      • P(d);SBLOCK,XP(D)::P(B)
      • P(c);SBLOCK::QAB1(F)
      • S(a);N_GUARD::QAR1(F)
      • S(a);N_GUARD::QAR1(F),XS(a)
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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).