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Pull Request Overview
This PR updates the documentation to reflect the latest flags and parameters available in lc0 v0.32, with the content being updated by Gemini based on the output of lc0 -h.
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| |VerboseMoveStats | -v, --[no-]verbose-move-stats | false | Display Q, V, N, U and P values of every move candidate after each move. | | ||
| |FpuStrategy | --fpu-strategy | reduction | How is an eval of unvisited node determined. "First Play Urgency" changes search behavior to visit unvisited nodes earlier or later by using a placeholder eval before checking the network. The value specified with --fpu-value results in "reduction" subtracting that value from the parent eval while "absolute" directly uses that value. | | ||
| |FpuValue | --fpu-value | 0.33 | "First Play Urgency" value used to adjust unvisited node eval based on --fpu-strategy. | | ||
| |CacheHistoryLength | --cache-history-length | 0 | Length of history, in half-moves, to include into the cache key. When this value is less than history that NN uses to eval a position, it's possble that the search will use eval of the same position with different history taken from cache. | |
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Corrected spelling of 'possble' to 'possible'.
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| |CacheHistoryLength | --cache-history-length | 0 | Length of history, in half-moves, to include into the cache key. When this value is less than history that NN uses to eval a position, it's possble that the search will use eval of the same position with different history taken from cache. | | |
| |CacheHistoryLength | --cache-history-length | 0 | Length of history, in half-moves, to include into the cache key. When this value is less than history that NN uses to eval a position, it's possible that the search will use eval of the same position with different history taken from cache. | |
| |DrawScore | --draw-score | 0.00 | Adjustment of the draw score from white's perspective. Value 0 gives standard scoring, value -1 gives Armageddon scoring. | | ||
| |ContemptMode | --contempt-mode | play | Affects the way asymmetric WDL parameters are applied. Default is 'play' for matches, use 'white_side_analysis' and 'black_side_analysis' for analysis. Use 'disable' to deactivate contempt. | | ||
| |Contempt | --contempt | | The simulated Elo advantage for the WDL conversion. Comma separated list in the form [name=]value, where the name is compared with the `UCI_Opponent` value to find the appropriate contempt value. The default value is taken from `UCI_RatingAdv` and will be overridden if either a value without name is given, or if a name match is found. | | ||
| |WDLCalibrationElo | --wdl-calibration-elo | 0.00 | Elo of the active side, adjusted for time control relative to rapid.To retain raw WDL without sharpening/softening, use default value 0. | |
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Missing space after period. Should be 'rapid. To' instead of 'rapid.To'.
Suggested change
| |WDLCalibrationElo | --wdl-calibration-elo | 0.00 | Elo of the active side, adjusted for time control relative to rapid.To retain raw WDL without sharpening/softening, use default value 0. | | |
| |WDLCalibrationElo | --wdl-calibration-elo | 0.00 | Elo of the active side, adjusted for time control relative to rapid. To retain raw WDL without sharpening/softening, use default value 0. | |
| |SmartPruningMinimumBatches | --smart-pruning-minimum-batches | 0 | Only allow smart pruning to stop search after at least this many batches have been evaluated. It may be useful to have this value greater than the number of search threads in use. | | ||
| |RamLimitMb | --ramlimit-mb | 0 | Maximum memory usage for the engine, in megabytes. The estimation is very rough, and can be off by a lot. For example, multiple visits to a terminal node counted several times, and the estimation assumes that all positions have 30 possible moves. When set to 0, no RAM limit is enforced. | | ||
| |MoveOverheadMs | --move-overhead | 200 | Amount of time, in milliseconds, that the engine subtracts from its total available time (to compensate for slow connection, interprocess communication, etc). | | ||
| |TimeManager | --time-manager | legacy | Name and config of a time manager. Possible names are 'legacy' (default), 'smooth', 'alphazero', and simple. See [configuration details](https://lc0.org/timemgr). | |
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Inconsistent quote usage: 'simple' should be quoted like the other time manager names ('legacy', 'smooth', 'alphazero').
Suggested change
| |TimeManager | --time-manager | legacy | Name and config of a time manager. Possible names are 'legacy' (default), 'smooth', 'alphazero', and simple. See [configuration details](https://lc0.org/timemgr). | | |
| |TimeManager | --time-manager | legacy | Name and config of a time manager. Possible names are 'legacy' (default), 'smooth', 'alphazero', and 'simple'. See [configuration details](https://lc0.org/timemgr). | |
mooskagh
approved these changes
Nov 7, 2025
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I gave gemini the output of
lc0 -hand it updated the table to this.