MESON Chess Problem Database

Problem Display
PID: 219857 (2Q5/8/4N3/4p3/B2pk3/8/5K2/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1974

2Q5/8/4N3/4p3/B2pk3/8/5K2/8

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qc2#
    • 1...Kd5
      • 2.Qc6#
  • Tries
    • 1.Sg5+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kd5
        • 2.Qc6#
      • 1...Kf4!
    • 1.Qc2+?
      • 1...Kd5
        • 2.Qc6#
      • 1...d3!
    • 1.Qc6+?
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf5!
  • Keys
    • 1.Sg7!
      • 1...Kd3
        • 2.Qc2#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd5
        • 2.Qc6#
      • 1...d3
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB1(D)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(b);S_FLIGHT::QAB1(D)
      • K(b);P-FLIGHT::QAR1(D)
      • P(a);OGATEB::QAR2(D)
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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).