Problem Display
PID: 47573 (8/1KP1k3/8/5Q2/2N5/8/8/8 w - - 0 1)

Borodatov, Leonid

Krymskaya pravda, 1968

8/1KP1k3/8/5Q2/2N5/8/8/8

#2

4 + 1


4883 Still More Fun with Chess Miniatures 2002
5454 Near Snap 2014
3713 Snap 2022

SOLUTION


  • SOUND
  • Tries
    • 1.Sb2?
      • 1...Kd6
        • 2.c8S#
      • 1...Ke8!
    • 1.Sd2?
      • 1...Kd6
        • 2.c8S#
      • 1...Ke8!
    • 1.Sa3?
      • 1...Kd6
        • 2.c8S#
      • 1...Ke8!
    • 1.Se3?
      • 1...Kd6
        • 2.c8S#
      • 1...Ke8!
    • 1.Sa5?
      • 1...Kd6
        • 2.c8S#
      • 1...Ke8!
    • 1.Se5?
      • 1...Ke8
        • 2.Qf7#
      • 1...Kd6!
    • 1.Sb6?
      • 1...Kd6
        • 2.Sc8#
        • 2.c8S#
      • 1...Ke8!
    • 1.Qg6?
      • 1...Kd7
        • 2.Qf7#
      • 1...Kf8!
    • 1.Qf6+?
      • 1...Kd7
        • 2.Qf7#
        • 2.c8Q#
      • 1...Ke8
        • 2.c8Q#
      • 1...Kxf6!
    • 1.c8B?
      • 1...Kd8
        • 2.Qd7#
        • 2.Qf8#
      • 1...Ke8!
  • Keys
    • 1.Sd6!
      • 1...Kxd6
        • 2.c8S#

Anticipated by 259248(1953)

This anticipates 116062(2001)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT,XQ(B)
    • Try
      • P(D);
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);S_FLIGHT,XS(A)::P=S


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).