Checkmat is a Brazilian Jiu-Jitsu professional team led by the brothers Leonardo Vieira, Ricardo Vieira and Leandro Vieira. The team was founded in 2008 and since then it's considered one of the best Brazilian Jiu-Jitsu and Submission schools of all times. Its name was chosen in reference to the chess game tactics and strategies that are very similar to Jiu-Jitsu: every move is important and leads the competitor to victory.