MESON Chess Problem Database

Problem Display
PID: 120640 (1N6/4k3/N5PK/1Q6/1P6/8/8/8 w - - 0 1)

Lebloch, Ivo

Slovensky Dennik, 1992

1N6/4k3/N5PK/1Q6/1P6/8/8/8

#2

6 + 1

6490 yacpdb 2009
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Qd7#
  • Tries
    • 1.Qc6?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8!
    • 1.Qd7+?
      • 1...Kf8
        • 2.Qf7#
        • 2.Qd8#
      • 1...Kf6!
    • 1.Qb6?
      • 1...Kf8
        • 2.Qd8#
      • 1...Ke8!
  • Keys
    • 1.Sc7!
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6
        • 2.Qg5#
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8
        • 2.Qe8#

Anticipated by 15592(1986)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).