Dev Builds » 20200514-1847

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN

Commit

Commit ID c6ce612f0ada9b5f0d9530128545d1ee7d58b3e5
Author protonspring
Date 2020-05-14 18:47:59 UTC
Simplify Time Management This is a functional simplification of the time management system. With this patch, there is a simple equation for each of two distinct time controls: basetime + increment, and x moves in y seconds (+increment). These equations are easy to plot and understand making future modifications or adding additional time controls much easier. SlowMover is reset to 100 so that is has no effect unless a user changes it. There are two scaling variables: * Opt_scale is a scale factor (or percentage) of time to use for this current move. * Max_scale is a scale factor to apply to the resulting optimumTime. There seems to be some elo gain in most scenarios. Better performance is attributable to one of two things: * minThinkingTime was not allowing reasonable time calculations for very short games like 10+0 or 10+0.01. This is because adding almost no increment and substracting move overhead for 50 moves quickly results in almost 0 time very early in the game. Master depended on minThinkingTime to handle these short games instead of good time management. This patch addresses this issue by lowering minThinkingTime to 0 and adjusting moverOverhead if there are very low increments. * Notice that the time distribution curves tail downward for the first 10 moves or so. This causes less time to attribute for very early moves leaving more time available for middle moves where more important decisions happen. Here is a summary of tests for this version at different time controls: SMP 5+0.05 LLR: 2.97 (-2.94,2.94) {-1.50,0.50} Total: 46544 W: 7175 L: 7089 D: 32280 Ptnml(0-2): 508, 4826, 12517, 4914, 507 https://tests.stockfishchess.org/tests/user/protonspring STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 20480 W: 3872 L: 3718 D: 12890 Ptnml(0-2): 295, 2364, 4824, 2406, 351 https://tests.stockfishchess.org/tests/view/5ebc343e7dd5693aad4e6873 STC, sudden death LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 7024 W: 1706 L: 1489 D: 3829 Ptnml(0-2): 149, 813, 1417, 938, 195 https://tests.stockfishchess.org/tests/view/5ebc346f7dd5693aad4e6875 STC, TCEC style LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 4192 W: 1014 L: 811 D: 2367 Ptnml(0-2): 66, 446, 912, 563, 109 https://tests.stockfishchess.org/tests/view/5ebc34857dd5693aad4e6877 40/10 LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 54032 W: 10592 L: 10480 D: 32960 Ptnml(0-2): 967, 6148, 12677, 6254, 970 https://tests.stockfishchess.org/tests/view/5ebc50597dd5693aad4e688d LTC, sudden death LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 9152 W: 1391 L: 1263 D: 6498 Ptnml(0-2): 75, 888, 2526, 1008, 79 https://tests.stockfishchess.org/tests/view/5ebc6f5c7dd5693aad4e689b LTC LLR: 2.98 (-2.94,2.94) {-1.50,0.50} Total: 12344 W: 1563 L: 1459 D: 9322 Ptnml(0-2): 70, 1103, 3740, 1171, 88 https://tests.stockfishchess.org/tests/view/5ebc6f4c7dd5693aad4e6899 closes https://github.com/official-stockfish/Stockfish/pull/2678 Bench: 4395562
Copyright 2011–2024 Next Chess Move LLC