MESON Chess Problem Database

Problem Display
PID: 175161 (8/1K2p1n1/7Q/8/1p1Pk1P1/4Np2/8/3R4 w - - 0 1)

van Dijk, Johannes

De Telegraaf, 1902

8/1K2p1n1/7Q/8/1p1Pk1P1/4Np2/8/3R4

#2

6 + 5

6490 yacpdb 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qe6+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Sxe6!
  • Keys
    • 1.Sd5!
      • 1...Kxd5
        • 2.Qc6#
      • 1...f2
        • 2.Qh1#
      • 1...Sf5
        • 2.Qe6#
      • 1...Sh5
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Se8
        • 2.Qe6#
      • 1...b3
        • 2.Sc3#
      • 1...e5
        • 2.Sf6#
      • 1...e6
        • 2.Sf6#

This anticipates 121474(1908)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(E)
      • Refutation
        • S(e);XQ(E)
  • Actual
    • S(B);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XS(B)::QAB1(E)
      • P(a);OGATEB::QAB(E)
      • S(e);N_GUARD::QAR2(E)
      • S(e);N_GUARD::QAR2(E),XS(e)
      • P(b);N_GUARD::S(B)
      • P(d);N_GUARD::S(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).