A Titanic Draw
This game was played at Nottingham in 1936 between World Champion Alexander Alekhine (1892-1946) and future World Champion Mikhail Botvinnik (1911-1995). Alekhine played White, he had Botvinnik a Knight down and it seemed like he had an assured victory. Botvinnik, on the other hand, sacrificed his remaining Knight to be able to administer a powerful check to the uncastled White King, threatening to recover his two pieces, ending up two Pawns up and winning the game; Alekhine, of course, could not allow that to happen, the result was perpetual check, an exciting and historic draw for the ages.