MESON Chess Problem Database

Problem Display
PID: 219865 (8/5K2/4NB2/p7/6k1/Q7/8/8 w - - 0 1)

Zalokotsky, Roman Fedorovich (aka Fedorovich, Roman)

Land og Folk, 1979

8/5K2/4NB2/p7/6k1/Q7/8/8

#2

4 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qf3#
    • 1...Kh5
      • 2.Qh3#
  • Tries
    • 1.Sg5?
      • 1...Kf4
        • 2.Qf3#
      • 1...Kh4
        • 2.Qh3#
      • 1...Kf5
        • 2.Qf3#
      • 1...Kh5
        • 2.Qh3#
      • 1...a4!
    • 1.Qb3?
      • 1...Kf5
        • 2.Qf3#
      • 1...Kh5
        • 2.Qh3#
      • 1...a4!
    • 1.Qc3?
      • 1...Kf5
        • 2.Qf3#
      • 1...Kh5
        • 2.Qh3#
      • 1...a4!
    • 1.Qd3?
      • 1...Kh5
        • 2.Qg6#
        • 2.Qh3#
      • 1...a4!
    • 1.Qe3?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qf3#
      • 1...Kh5
        • 2.Qg5#
        • 2.Qh3#
      • 1...a4!
    • 1.Qg3+?
      • 1...Kf5
        • 2.Qf4#
        • 2.Qf3#
        • 2.Qg6#
      • 1...Kh5
        • 2.Qh4#
        • 2.Qh3#
        • 2.Qg5#
        • 2.Qg6#
      • 1...Kxg3!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf3#
      • 1...Kf4
        • 2.Qf3#
      • 1...Kh5
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR2(A)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Refutation
        • P(b);
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::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).