MESON Chess Problem Database

Problem Display
PID: 47183 (K4Q1N/4n2k/4B3/8/8/8/8/8 w - - 0 1)

Petkov, Petko Andonov

Schach-Echo, 1962

K4Q1N/4n2k/4B3/8/8/8/8/8

#2

4 + 2

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Sd5
      • 2.Bf5#
    • 1...Sf5
      • 2.Bxf5#
    • 1...Sc6
      • 2.Bf5#
    • 1...Sc8
      • 2.Bf5#
  • Tries
    • 1.Bf5+?
      • 1...Sg6
        • 2.Bxg6#
      • 1...Sxf5!
    • 1.Bf7?
      • 1...Sg6
        • 2.Bxg6#
      • 1...Sd5
        • 2.Bg6#
      • 1...Sf5
        • 2.Bg6#
      • 1...Sc6
        • 2.Bg6#
      • 1...Sc8
        • 2.Bg6#
      • 1...Sg8!
  • Keys
    • 1.Sf7!
      • 1...Kg6
        • 2.Qh6#
      • 1...Sd5
        • 2.Bf5#
      • 1...Sf5
        • 2.Bxf5#
      • 1...Sc6
        • 2.Bf5#
      • 1...Sg6
        • 2.Sg5#
      • 1...Sc8
        • 2.Bf5#
      • 1...Sg8
        • 2.Bf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::B(A)
    • S(a);N_GUARD::B(A),XS(a)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::B(A),XS(a)
      • Refutation
        • S(a);XB(A)
    • Try
      • B(A);
      • Vars
        • S(a);N_GUARD::B(A),XS(a)
        • S(a);N_GUARD::B(A)
      • Refutation
        • S(a);
  • Actual
    • S(D);
    • Vars
      • K(b);S_FLIGHT::QAR1(C)
      • S(a);N_GUARD::B(A)
      • S(a);N_GUARD::B(A),XS(a)
      • S(a);SBLOCK::S(D)
HTML5 logo

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).