[jsmcgd]

I don't play chess but what does Jason do at the 2:02 mark?

[datr]

I'm not sure which one is Jason but it looks to me like both of them opt to add a captured piece to the board (which is a rule only present in Bughouse and not regular chess).

[jsmcgd]

Thanks, that explains it.

[snippyhollow]

It's part of the Bughouse variant http://en.wikipedia.org/wiki/Bughouse_chess#Captured_pieces