Problem Display
PID: 4908 (8/8/7p/6k1/4Q3/8/5B1K/6N1 w - - 0 1)

Potempski, Waclaw

Shakhmatny Zhurnal, 1893

8/8/7p/6k1/4Q3/8/5B1K/6N1

#2

4 + 2


3296 Shakhmatny zadachi miniaturi 1987
3813 300 Sachmatu Uzdaviniu 1991
5454 Near Snap 2021

SOLUTION


  • SOUND
  • Sets
    • 1...Kh5
      • 2.Qf5#
  • Tries
    • 1.Sf3+?
      • 1...Kh5
        • 2.Qf5#
      • 1...Kf6!
    • 1.Sh3+?
      • 1...Kh5
        • 2.Qf5#
      • 1...Kf6!
  • Keys
    • 1.Qe6!
      • 1...Kf4
        • 2.Be3#
      • 1...Kh5
        • 2.Qf5#
      • 1...h5
        • 2.Sh3#

Anticipated by 4899(1893)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR2(D)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR2(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::B(B)
      • K(a);P-FLIGHT::QAR2(D)
      • P(b);SBLOCK::S(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).