MESON Chess Problem Database

Problem Display
PID: 6498 (kBNK4/8/N1P5/3n4/8/8/8/8 w - - 0 1)

Lebedev, Aleksandr N

Zadachi i Etyudi, 1929

kBNK4/8/N1P5/3n4/8/8/8/8

#2

5 + 2

3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Sb6#
    • 1...Se3
      • 2.Sb6#
    • 1...Sb4
      • 2.Sb6#
    • 1...Sf4
      • 2.Sb6#
    • 1...Sb6
      • 2.Sxb6#
    • 1...Sf6
      • 2.Sb6#
    • 1...Sc7
      • 2.Sb6#
    • 1...Se7
      • 2.Sb6#
  • Tries
    • 1.Kd7?
      • 1...Sb6+
        • 2.Sxb6#
      • 1...Sc3
        • 2.Sb6#
      • 1...Se3
        • 2.Sb6#
      • 1...Sb4
        • 2.Sb6#
      • 1...Sf4
        • 2.Sb6#
      • 1...Sc7
        • 2.Sb6#
      • 1...Se7
        • 2.Sb6#
      • 1...Sf6+!
  • Keys
    • 1.Ba7!
      • 1...Sc3
        • 2.Sc7#
      • 1...Se3
        • 2.Sc7#
      • 1...Sb4
        • 2.Sc7#
      • 1...Sf4
        • 2.Sc7#
      • 1...Sb6
        • 2.Sc7#
      • 1...Sf6
        • 2.Sc7#
      • 1...Sc7
        • 2.Sxc7#
      • 1...Se7
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 8
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::S(D)
    • S(a);N_GUARD::S(D),XS(a)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Vars
        • S(a);CHECK,N_GUARD::S(D),XS(a)
        • S(a);N_GUARD::S(D)
      • Refutation
        • S(a);CHECK
  • Actual
    • B(C);
    • Vars
      • S(a);N_GUARD::S(A)
      • S(a);N_GUARD::S(A),XS(a)
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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).