Problem Display
PID: 197858 (3k4/4N3/1NP5/3K3B/8/8/8/4B3 w - - 0 1)

Fomichev, Evgeny Vasilevich

Zadachi i Etyudi, 1997

3k4/4N3/1NP5/3K3B/8/8/8/4B3

#2

6 + 1


5454 Near Snap 2023

SOLUTION


  • SOUND
  • Tries
    • 1.Ba5?
      • threat
        • 2.Sbc8#
      • 1...Kc7
        • 2.Sd7#
      • 1...Kxe7!
  • Keys
    • 1.Sd7!
      • 1...Kc7
        • 2.Ba5#
      • 1...Kxe7
        • 2.Bh4#

Anticipated by 197293(1996)

FEATURES


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


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).