This guy has been exposed in the past about his cheating.

His profile : 1_2_3_4_5_9

More info here:his cheating exposed blog

This Guy Became Master just by cheating and more surprising thing is that he took 7-10 contest to become CM from Expert and just 1 contest to become Matser and as always he used those petty tricks of cheating mentioned in the blog mentioned above. If such cheater can become master then it demoralizes the ones who are working quite hard.