MESON Chess Problem Database

Problem Display
PID: 218165 (6R1/8/3p4/4kP2/2Q2N2/8/8/K7 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1979

6R1/8/3p4/4kP2/2Q2N2/8/8/K7

#2

5 + 2

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qe6#
  • Tries
    • 1.Sd3+?
      • 1...Kf6
        • 2.Qe6#
      • 1...Kxf5!
    • 1.Rg4?
      • 1...Kxf5
        • 2.Qe6#
      • 1...Kf6
        • 2.Qe6#
      • 1...d5!
    • 1.Qd5+?
      • 1...Kf6
        • 2.Qe6#
      • 1...Kxf4!
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qe6#
      • 1...Kxe4!
  • Keys
    • 1.Sh5!
      • 1...Kxf5
        • 2.Qd5#
      • 1...d5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::QAR1(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • R(E);
      • Vars
        • K(a);P-FLIGHT,XP(D)::QAB1(B)
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
  • Actual
    • S(C);
    • Vars
      • K(a);P-FLIGHT,XP(D)::QAR2(B)
      • P(b);SBLOCK::QAB1(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).