MESON Chess Problem Database

Problem Display
PID: 80748 (Q3Nk2/4p3/4B3/4K3/8/7n/8/8 w - - 0 1)

Azhusin, Aleksandr Aleksandrovich

Yunyi Leninets, 1971

Q3Nk2/4p3/4B3/4K3/8/7n/8/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Qg2?
      • threat
        • 2.Qg8#
      • 1...Kxe8
        • 2.Qa8#
        • 2.Qg8#
      • 1...Sg5!
    • 1.Qf3+?
      • 1...Kxe8
        • 2.Qa8#
      • 1...Sf4!
  • Keys
    • 1.Qh1!
      • 1...Kxe8
        • 2.Qa8#
      • 1...Sg1
        • 2.Qh8#
      • 1...Sf2
        • 2.Qh8#
      • 1...Sf4
        • 2.Qh8#
      • 1...Sg5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Refutation
        • S(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATEB,P-FLIGHT,XS(D)::QAR(C)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(C);
    • Vars
      • K(c);OGATEB,P-FLIGHT,XS(D)::QAR(C)
      • S(a);OGATE::QAR2(C)
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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).