Abstract/Summary

TCEC15 was the 15th season of the Top Chess Engine Championship and ran from March 5th to May 28th, 2019. TCEC has become the largest Open Computer Chess Championship. It attracts the best engines in the field and provides an opportunity for absolute and comparative analysis of the participating engines in a computational experiment. Once again, the final offered a contrast of playing styles between neural-network engine LEELA CHESS ZERO and STOCKFISH. This time, the ‘new architecture’ LC0 won, 53½-46½, making their ‘TCEC Sufi’ score 103-97 to LC0. Again, KOMODO was third. The attached files at http://centaur.reading.ac.uk/83156/ provide the 808 games with engine PVs, the detail on them and some summary statistics. The decisive games of Divisions 1 and P, and of the Superfinal have been played out by FRITZ17 at depth 24 to mate to enable and benchmark endgame practice.