MESON Chess Problem Database

Problem Display
PID: 175736 (5K2/3R4/2kppNQ1/1p2p2R/1Pp5/2P5/8/8 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1898

5K2/3R4/2kppNQ1/1p2p2R/1Pp5/2P5/8/8

#2

7 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qe4+?
      • 1...Kb6
        • 2.Qb7#
      • 1...d5!
    • 1.Qf7?
      • 1...Kb6
        • 2.Rxd6#
      • 1...d5
        • 2.Qxe6#
      • 1...e4!
    • 1.Qg1?
      • 1...d5
        • 2.Qc5#
      • 1...e4!
  • Keys
    • 1.Sd5!
      • 1...Kxd5
        • 2.Qg2#
      • 1...Kxd7
        • 2.Qe8#
      • 1...exd5
        • 2.Qxd6#
      • 1...e4
        • 2.Rc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(E)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(E);
      • Vars
        • K(d);P-FLIGHT::R(F),XP(e)
        • P(e);OGATEB::QAR2(E),XP(f)
      • Refutation
        • P(c);
    • Try
      • Q(E);
      • Vars
        • P(e);N_GUARD::QAR1(E)
      • Refutation
        • P(c);
  • Actual
    • S(D);
    • Vars
      • K(d);OGATEB,P_SPINP(c),S_FLIGHT,XS(D)::QAB(E)
      • K(d);OGATEB,S_FLIGHT,XR(F)::QAB1(E)
      • P(f);OGATE,P_SPINP(e),XS(D)::QAR1(E),XP(e)
      • P(c);::R1(F)
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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).