MESON Chess Problem Database

Problem Display
PID: 200485 (5Q1N/2R5/4p3/4k3/2P4P/4pP2/2P1p3/4K3 w - - 0 1)

van Dijk, Johannes

Op de Hoogte, 1906

5Q1N/2R5/4p3/4k3/2P4P/4pP2/2P1p3/4K3

#2

8 + 4

3713 Snap 2019
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qc5+?
      • 1...Kf6
        • 2.Rf7#
        • 2.Qg5#
      • 1...Kf4!
    • 1.Qd6+?
      • 1...Kf5
        • 2.Rf7#
      • 1...Kf6
        • 2.Rf7#
        • 2.Qf4#
      • 1...Kxd6!
    • 1.Qg7+?
      • 1...Kf4
        • 2.Rf7#
      • 1...Kf5
        • 2.Rf7#
        • 2.Qg5#
      • 1...Kd6!
    • 1.Qd8?
      • 1...Kf5
        • 2.Qg5#
      • 1...Kf4!
  • Keys
    • 1.Qb8!
      • 1...Kd4
        • 2.Qb2#
      • 1...Kf4
        • 2.Rf7#
      • 1...Kf5
        • 2.Rf7#
      • 1...Kd6
        • 2.Sf7#
      • 1...Kf6
        • 2.Rf7#

Anticipated by 167289(0000), 29186(1876), 102942(1894), 5002(1896), 178113(1898)

This anticipates 167288(1908-1910)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);P-FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::R(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(c);P-FLIGHT::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(c);S_FLIGHT::QAB(G)
      • K(c);S_FLIGHT::QAB(G)+R(F),DCHECK
      • K(c);P-FLIGHT::R(F)
      • K(c);S_FLIGHT::S(H)
      • K(c);S_FLIGHT::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).