Problem Display
PID: 63766 (2Q4n/4qk1n/4N3/8/6N1/8/8/7K w - - 0 1)

d'Orville, Peter Auguste

La Palamede, 1842

2Q4n/4qk1n/4N3/8/6N1/8/8/7K

#2

4 + 4


14962 Problemes d'Echecs 1842
16 Chess Amateur (The) 1909
81 Chess 1946
5454 Near Snap 2014

SOLUTION


  • SOUND
  • Sets
    • 1...Sf6
      • 2.Se5#
  • Keys
    • 1.Qg8+!
      • 1...Kxg8
        • 2.Sh6#

This anticipates 64308(1944)

FEATURES


  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • S(c);SBLOCK::S(B)
  • Actual
    • Q(D);CHECK
    • Vars
      • K(b);S_FLIGHT,XQ(D)::S(B)


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).