This is a report of the 'TCEC Cup 2' computational experiment, the second TCEC knockout event and the second major part of TCEC’s 14th season. It featured the best 32 engines of the ‘TCEC 14’ league event and the games were held at Blitz tempo. The different format called for different optimal settings in the engines, thereby enabling a comparison with performance at slower tempi. This event made history: the first major trophy win by a 'NN' Neural Network chess engine, LEELA CHESS ZERO, even though relatively disadvantaged by the faster tempo. All decisive games in the supplementary data have been played out by FRITZ17 at search depth 24 to benchmark endgame practice
