Problem Display
PID: 133136 (6B1/8/8/8/8/1Nk5/8/3K3Q w - - 0 1)

Boyer, Jean-Pierre

di Scala, Pascal

Vitatop, 1983

6B1/8/8/8/8/1Nk5/8/3K3Q

#2

4 + 1


5454 Near Snap 2009
3713 Snap 2009
  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qf3#
  • Tries
    • 1.Kc1?
      • 1...Kd3
        • 2.Qf3#
      • 1...Kb4!
    • 1.Qg2?
      • threat
        • 2.Qd2#
      • 1...Kd3
        • 2.Qf3#
      • 1...Kb4!
    • 1.Qd5?
      • threat
        • 2.Qd2#
        • 2.Qd4#
      • 1...Kb4
        • 2.Qa5#
      • 1...Kb2!
    • 1.Qb7?
      • 1...Kd3
        • 2.Qf3#
      • 1...Kb2!
    • 1.Qh4?
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb2!
    • 1.Qh5?
      • 1...Kd3
        • 2.Qf3#
      • 1...Kb4
        • 2.Qa5#
      • 1...Kb2!
    • 1.Qh8+?
      • 1...Kd3
        • 2.Qd4#
      • 1...Kb4!
  • Keys
    • 1.Qa8!
      • 1...Kb2
        • 2.Qa1#
      • 1...Kd3
        • 2.Qf3#
      • 1...Kb4
        • 2.Qa5#

Anticipated by 4506(1873), 32680(1873), 24321(1885), 22076(1924), 46372(1941), 18804(1958)

This anticipates 184446(2000), 47757(2003), 67253(2006), 235007(2019)



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).