This is a report of the 'TCEC Cup 4' computational experiment, the 4th TCEC knockout event and the second major part of TCEC’s 16th season. It started on 16th October 2019 and featured the best 32 engines of the ‘TCEC 16’ 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. STOCKFISH retrieved the title from LEELA CHESS ZERO, defeating it when their perspectives diverted on move forty of game eight. All decisive games in the supplementary data have been played out by FRITZ17 at search depth 24 to enable and benchmark endgame practice.

中文翻译：

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TCEC 杯 4

这是“TCEC Cup 4”计算实验、第4次TCEC淘汰赛和TCEC第16个赛季的第二个主要部分的报告。它于 2019 年 10 月 16 日开始，采用 'TCEC 16' 联赛中最好的 32 台引擎，比赛以闪电战的节奏进行，不同的格式要求对引擎进行不同的优化设置，从而可以比较慢节奏下的性能. STOCKFISH 夺回了 LEELA CHESS ZERO 的冠军头衔，当他们的观点在第 8 场比赛的第 40 步转移时击败了它。补充数据中的所有决定性比赛都由 FRITZ17 在搜索深度 24 下进行，以启用和衡量残局练习。