MESON Chess Problem Database

Problem Display
PID: 265549 (N1k5/2P4K/8/8/8/8/Q7/7R w - - 0 1)

Zhuravlev, Andrey Nikolaevich

Kudesnik, 2022

N1k5/2P4K/8/8/8/8/Q7/7R

#2

5 + 1

SOLUTION

  • SOUND
  • Tries
    • 1.Ra1?
      • 1...Kb7
        • 2.Qa6#
      • 1...Kd7!
    • 1.Rc1?
      • 1...Kb7
        • 2.c8Q#
      • 1...Kd7!
    • 1.Re1?
      • 1...Kd7
        • 2.Qe6#
      • 1...Kb7!
  • Keys
    • 1.Rh6!
      • 1...Kb7
        • 2.Qa6#
      • 1...Kd7
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);OGATE,S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::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).