Issues

• Repetition detection distinguishes positions that differ only by an unusable en-passant marker

  good first issue
  LeelaChessZero/lc0#2469 · Filter by author vikta03 opened on Sep 29, 2026

• Save TensorRT engine in weights file for stable performance.

  enhancementgood first issue
  LeelaChessZero/lc0#2185 · Filter by author borg323 opened on Jun 8, 2025
  1

• Support for Ceres networks in onnx backend

  enhancementgood first issue
  LeelaChessZero/lc0#2180 · Filter by author borg323 opened on Jun 2, 2025

• Port "technical" backends to the new API

  enhancementgood first issue
  LeelaChessZero/lc0#2179 · Filter by author mooskagh opened on Jun 2, 2025

• Enhance valuehead search algorithm

  enhancementgood first issue
  LeelaChessZero/lc0#2176 · Filter by author mooskagh opened on May 30, 2025
  1

• Enhance policyhead search algorithm

  enhancementgood first issue
  LeelaChessZero/lc0#2175 · Filter by author mooskagh opened on May 30, 2025
  1

• Log when NN eval takes longer than one second.

  good first issue
  LeelaChessZero/lc0#1768 · Filter by author mooskagh opened on Jul 31, 2022
  4

• Confirm parameter setting with info string uci response

  enhancementgood first issue
  LeelaChessZero/lc0#1598 · Filter by author mooskagh opened on Jul 1, 2021
  9

• Improve error checking in time manager options

  good first issue
  LeelaChessZero/lc0#1480 · Filter by author borg323 opened on Jan 6, 2021
  8

• Feature Request: Selfplay training games generated with unique names

  enhancementgood first issue
  LeelaChessZero/lc0#1226 · Filter by author cn4750 opened on Apr 22, 2020

• Make Lc0 and client Linux-friendly.

  good first issue
  LeelaChessZero/lc0#976 · Filter by author mooskagh opened on Oct 31, 2019
  20

• Add Syzygy50MoveRule UCI option

  good first issue
  LeelaChessZero/lc0#856 · Filter by author killerducky opened on May 20, 2019
  3

• Incorrect comment on bit order in class BitBoard?

  good first issue
  LeelaChessZero/lc0#825 · Filter by author rhalbersma opened on Mar 30, 2019
  5

• LC0 selfplay sometimes ends prematurely declaring a draw in selfplay when resign is off and there is no valid reason to claim a draw.

  buggood first issue
  LeelaChessZero/lc0#798 · Filter by author trophymursky531 opened on Mar 13, 2019
  10

• Unclear if games are being produced until they are complete

  enhancementgood first issue
  LeelaChessZero/lc0#783 · Filter by author ghost opened on Mar 6, 2019
  3

• Uses of runtime_error instead of Exception

  good first issue
  LeelaChessZero/lc0#705 · Filter by author cn4750 opened on Jan 26, 2019
  2