MESON Chess Problem Database

Problem Display
PID: 247012 (8/4k3/1P3N1K/8/2Q5/5N2/8/8 w - - 0 1)

Lukashev, Viktor Sergeevich

Uralski Problemist, 1998

8/4k3/1P3N1K/8/2Q5/5N2/8/8

#2

5 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Qc7#
  • Tries
    • 1.Kg6?
      • 1...Kd8
        • 2.Qc7#
      • 1...Kf8
        • 2.Qf7#
        • 2.Qb4#
        • 2.Qc5#
      • 1...Kd6!
    • 1.Kg7?
      • 1...Kd8
        • 2.Qc7#
      • 1...Kd6!
    • 1.Sd4?
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6
        • 2.Qe6#
      • 1...Kd8
        • 2.Qc7#
      • 1...Kf8!
    • 1.Qe6+?
      • 1...Kd8
        • 2.Qd7#
        • 2.Qe8#
      • 1...Kf8
        • 2.Sd7#
        • 2.Sh7#
        • 2.Qe8#
      • 1...Kxe6!
    • 1.Qc6?
      • 1...Kd8
        • 2.Qd7#
        • 2.Qe8#
        • 2.Qc7#
      • 1...Kf8
        • 2.Qe8#
      • 1...Kf7!
  • Keys
    • 1.Sg5!
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6
        • 2.Qe6#
      • 1...Kd8
        • 2.Qc7#
      • 1...Kf8
        • 2.Qf7#
        • 2.Qb4#
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
        • K(a);S_FLIGHT,XS(D)::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);S_FLIGHT,XS(D)::QAR1(B)
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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).