The link below lets you download a PDF file with analysis of all 15 games and fragments I collected from the RA Winter Open (Jan.22-24, 2010), including all five games from the winner, GM Bator Sambuev.

Special thanks to J. Ken MacDonald, who answered my distress signal on Chess Talk and found the 22 year old En Passant article which features in the notes to O'Donnell - Sambuev. This corrects an error in both the Informant and all digital databases, including Chessbase and Canbase.

Hope you get something out of it.
Comments (esp. corrections) appreciated,

John Upper

http://www.mediafire.com/file/g23mv1...5D%20FINAL.pdf

PS: I have noticed that the word "discoverd" is misspelled. :o Too late. :(