The German grandmaster's tournament, however, was not without setbacks, as in round five he was defeated by 18-year-old French champion Marc'Andria Maurizzi. These victories meant that Keymer entered the penultimate round tied for first place, facing fellow co-leader Matthias Bluebaum with the white pieces. This video course includes GM Anish Giri's deep insights and IM Sagar Shah's pertinent questions to the super GM. Keymer built up a winning advantage, showing excellent preparation and endgame technique, but then committed a single, decisive mistake. Given the tournament situation and the level of resistance posed by the Indian grandmaster, it is understandable that Keymer did not find the narrow path to victory.