MESON Chess Problem Database

Problem Display
PID: 281807 (4K3/8/P7/3k4/4N3/8/1Q2PN2/8 w - - 0 1)

Kanonik, Dimitry Kirillovich

Tekhnika Molodezhi, 1978

4K3/8/P7/3k4/4N3/8/1Q2PN2/8

#2

6 + 1

9939 64 Shakhmatnoe obozrenie 2025

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qb7#
  • Tries
    • 1.Ke7?
      • 1...Kc6
        • 2.Qb7#
      • 1...Kc4!
    • 1.Kf7?
      • 1...Kc6
        • 2.Qb7#
      • 1...Kc4!
    • 1.Sd3?
      • 1...Kxe4
        • 2.Qe5#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qe5#
      • 1...Kc4!
    • 1.Qb5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Ke6!
  • Keys
    • 1.Sg4!
      • 1...Kc4
        • 2.Se3#
      • 1...Kxe4
        • 2.Qe5#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB1(A)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT,XS(D)::QAR1(A)
        • K(a);N_GUARD,S_FLIGHT::QAB1(A)
        • K(a);N_GUARD,S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::S(C)
      • K(a);N_GUARD,S_FLIGHT,XS(D)::QAR1(A)
      • K(a);N_GUARD,S_FLIGHT::QAB1(A)
      • K(a);N_GUARD,S_FLIGHT::QAR1(A)
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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).