Problem Display
PID: 197293 (8/3N4/B2P4/2K2k1P/4NP2/4P2P/3P4/8 w - - 0 1)

Grudzinski, Henryk

Zadachi i Etyudi, 1996

8/3N4/B2P4/2K2k1P/4NP2/4P2P/3P4/8

#2

10 + 1


5454 Near Snap 2023

SOLUTION


  • SOUND
  • Tries
    • 1.Bc8?
      • threat
        • 2.Sdf6#
      • 1...Ke6
        • 2.Se5#
      • 1...Kxe4!
  • Keys
    • 1.Se5!
      • 1...Kxe4
        • 2.Bd3#
      • 1...Ke6
        • 2.Bc8#

This anticipates 197858(1997), 141116(2001)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(H);
      • Threat
        • B(H)+S(J)
      • Vars
        • K(a);S_FLIGHT::B(H)+S(J)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • S(J);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(D)::B(H)
      • K(a);S_FLIGHT::B(H)


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).