Skip to content

Release V1.41

V1.41 was released on 2020-Aug-29. You can download the release ZIP file (4 MB):

Download V1.41

Changes from V1.40

  • Improved fail-high handling at root.
  • Increased check deepening from two to three moves.
  • Endgames with a minor piece ahead but no pawns are recognised as drawish.
  • Improved mate score reliability from hashtables.
  • More opening knowledge.

UCI versions

  • Using “searchmoves” does not block the internal opening book.

Windows

  • Changed time measurement to native Windows functions.

Android

  • The Android build chain has been updated from NDK r21 to r21d.
  • Dropped binaries for x86 CPUs. Only ARM is supported.

Raspberry Pi

  • Rolled back the GCC version from 8.3.0 (Buster) to 6.3.0 (Stretch).

Known issues

All versions

  • The PV may contain an illegal move in the rare case that a PV position allows pawn takes queen with queening, but this is not the best move. However, the root move is not affected so that no illegal move will be played.
  • Capturing a castling enabled rook and then recapturing with another rook keeps the castling rights.

Embedded target

  • When entering a new position after undoing or redoing moves, the move list in the main screen is not cleared.
  • The firmware is not compatible with the Olimex H405 mainboard variant that has a GigaDevice GD32F405 controller instead of an STMicroelectronics STM32F405.

UCI versions

  • The “en passant” square given via FEN position string is discarded erroneously.
  • Elo throttling with move time below 15 seconds can add up to 50 Elo instead of subtracting.

Note: issues are fixed with new releases only – there are no backports. However, if an issue is found, it will be listed for the previous releases where applicable.