http://www.uschess.org/forums/viewtopic.php?f=23&t=21984&sid=0c5d9cb0ec4ef1eb2ec18c9e6e440b04
...
guess not...
interesting thank you i ever would have known
sorry never would have known:D
http://www.uschess.org/forums/viewtopic.php?f=23&t=21984&sid=0c5d9cb0ec4ef1eb2ec18c9e6e440b04