Problem Display
PID: 200033 (8/8/2R5/4k1B1/8/5K2/4N3/8 w - - 0 1)

Svetec, Srdan

Stella Polaris, 1966

8/8/2R5/4k1B1/8/5K2/4N3/8

#2

4 + 1


5454 Near Snap 2019

SOLUTION


  • SOUND
  • Tries
    • 1.Bf4+?
      • 1...Kf5
        • 2.Sg3#
        • 2.Sd4#
      • 1...Kd5!
  • Keys
    • 1.Sf4!
      • 1...Kd4
        • 2.Bf6#
      • 1...Kf5
        • 2.Rc5#

This anticipates 77946(1990)

FEATURES


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


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).