MESON Chess Problem Database

Problem Display
PID: 176167 (4N3/R2PkN2/4B3/8/4K3/8/8/8 w - - 0 1)

Petkov, Petko Andonov

Schach-Echo, 1959

4N3/R2PkN2/4B3/8/4K3/8/8/8

#2

6 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe6
      • 2.d8S#
  • Tries
    • 1.Sh8?
      • 1...Kxe6
        • 2.d8S#
      • 1...Kf8
        • 2.Sg6#
      • 1...Kd8!
    • 1.Rb7?
      • 1...Kxe6
        • 2.d8S#
      • 1...Kf8!
    • 1.Rc7?
      • 1...Kxe6
        • 2.d8S#
      • 1...Kf8!
    • 1.d8Q+?
      • 1...Kxe6
        • 2.Sg5#
        • 2.Sg7#
        • 2.Re7#
        • 2.Qb6#
        • 2.Qf6#
        • 2.Qe7#
        • 2.Qd5#
        • 2.Qd6#
        • 2.Qd7#
        • 2.Qc8#
      • 1...Kf8!
    • 1.d8R+?
      • 1...Kxe6
        • 2.Sg5#
        • 2.Rd6#
      • 1...Kf8!
  • Keys
    • 1.Se5!
      • 1...Kxe6
        • 2.d8S#
      • 1...Kd8
        • 2.Sc6#
      • 1...Kf8
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,XB(B)::P=S
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);P-FLIGHT,XB(B)::P=S
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,XB(B)::P=S
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT,XB(B)::P=S
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(a);P-FLIGHT,XB(B)::P=S
      • K(a);S_FLIGHT::S(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).