[Retros] Diagram correction (Re: 'Tis the season...)
    Noam Elkies 
    elkies at math.harvard.edu
       
    Sun Dec 30 13:35:39 EST 2007
    
    
  
Yet another variation (no Arabian Nights this time):
         ...................
         : . _ . _ . _ . _ :
         : _ . _ . _ . _ . :
         : . _ . _ . _ . _ :
         : _ . _ . P . _ . :
         : P _ . _ . _ Q _ :
         : _ . _ P B . R . :
         : . P P _ B P P P :
         : _ N _ K _ . N R :
         :.................:
      Noam D. Elkies, 30.xii.07
     How many minimal sequences?
Happy New Year,
--NDE
    
    
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