More Details• The ranking is a good indicator of which are best ones in opening knowledge• All chess engines analyzed with 400 opening positions, Download: OTS v4• Each opening is carefully checked, as reference is used Top engine games• The opening suite contains various positions, played mainly in SCCT tours• In short, no double positions and no any book is used (during analyzing...)• All of the positions are solved by the current engines (no any unsolved...)• As best move (bm) is selected the move with highest winning percentage• Some engines (which suffer under Fritz) analyzed under Arena 3.5.1 GUI• Raubfish X39e3 is tested: Analysis_ICC ON, Null Move Heuristic OFF• Lc0 v0.20.1 (id 32700) is played on GeForce GTX 1050 Ti, for Settings• Mostly of the engines are 64-bit (Bmi2, POPCNT used where available)• The average time of test duration (per engine) takes over than 80 minutes• OTS (including SCCT) are the first-ever opening competitions organized...

OTS v4 / OTS v3 / AES / PTS / ETS / OTS 30s / STS / TTS