MESON Chess Problem Database

Problem Display
PID: 65838 (1K6/1p6/8/kp6/8/3N4/2Q5/8 w - - 0 1)

Kichigin, Viktor Vladimirovich

diagrammes, 1987

1K6/1p6/8/kp6/8/3N4/2Q5/8

#2

3 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...b6
      • 2.Qa2#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qa2#
      • 1...Ka6
        • 2.Qa2#
      • 1...b4!
    • 1.Qf2?
      • threat
        • 2.Qa7#
      • 1...Ka4
        • 2.Qa2#
      • 1...Ka6
        • 2.Qa7#
      • 1...b6
        • 2.Qa2#
      • 1...b4!
    • 1.Qc7+?
      • 1...Ka6
        • 2.Sb4#
        • 2.Sc5#
      • 1...b6
        • 2.Qa7#
      • 1...Ka4!
  • Keys
    • 1.Qc5!
      • threat
        • 2.Qa7#
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka6
        • 2.Qa7#
      • 1...b6
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAR(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAR(A)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(a);P-FLIGHT::QAR2(A)
        • K(a);P-FLIGHT::QAR1(A)
        • P(c);SBLOCK::QAR(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Vars
        • P(c);OGATE,P_SPINP(c)::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);P_PINP(b)
    • Threat
      • QAR2(A)
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(A)
      • P(c);SBLOCK::QAR2(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).