MESON Chess Problem Database

Problem Display
PID: 273073 (8/8/p7/Q7/K5N1/3k4/5B2/5R2 w - - 0 1)

Astafyeva, Aliona

Mosiashvili-75 JT (Kudesnik), 2023

8/8/p7/Q7/K5N1/3k4/5B2/5R2

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Se5#
  • Tries
    • 1.Re1?
      • 1...Kc4
        • 2.Se5#
      • 1...Kc2!
  • Keys
    • 1.Be3!
      • 1...Kc2
        • 2.Qd2#
      • 1...Ke2
        • 2.Qxa6#
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::S(D)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAR1(E)
      • K(a);N_GUARD,S_FLIGHT::QAB(E),XP(b)
      • K(a);N_GUARD,S_FLIGHT::S(D)
      • K(a);N_GUARD,S_FLIGHT::QAB1(E)
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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).