*snip*
i am sure it will be not easy for some one to run a bot on this site. i wll keep capture each match and will analyisis players moves, and will make sign up system we hard so it will be not easy for a bot to log in in this site
I'm not sure if increasing the difficulty of signing up, and other such measures, is a good idea - they might end up making the site less useable, while not really stopping players from using their favorite chess program to cheat. But, perhaps analyzing player moves as you mentioned, maybe along the lines of what XinXan previously suggested, might help somewhat.
That's quite problematic too, to be honest. If it is not done in realtime, as in the analysis will be done after the match (as the "i will keep capture each match" suggests), withdrawals will be delayed. This will be bad for any site, especially if they are new.
Chess.com is a rather famous site. How do they do it ? They wait for reports from players of cheating. After a player is reported for cheating, their plays will be monitored and analysed. Not one game, over multiple games.
An online chess website that involves money can't afford to let a cheater poach their regular players, but they cannot also risk banning players that are just good at chess.
Also, banning won't mean much. On chess.com, there are very few tournaments with prize money, and those are open to only established players. Most of whom pay between 5-14$ a month for various tiers of membership. On the other hand, losing an account after breaking even wouldn't mean much. Boot up a proxy, start cheating again.
TL;DR: Stopping cheating is hard when there is no monetary incentive. When there is money involved though, it's pretty near impossible.