Changelog

Source: NEWS.md

chesstrainer 0.9-110 (2025-10-26)

  • can play en passant
  • can promote pawns
  • help opens up in the plot, not in the console
  • changed <r> key to <Ctrl-r> and <d> key to <Ctrl-d>
  • added <m> key to toggle between different sequence selection modes
  • allow adjusting the line width during play with the <(> and <)> keys
  • various settings (including the colors and text sizes) are saved across sessions and can be adjusted when the trainer is running
  • moves in long algebraic notation are added to the sequence files
  • added <?> key to find all sequences that start with the same moves entered so far
  • the <t> key is used for taking back moves or a score adjustment (in test mode)
  • added a board editor (which can be opened in add mode with the <b> key)
  • sequences can contain position evaluations, which (if not missing) are shown as an evaluation bar (can be toggled on/off with <v>)
  • can use Stockfish in the background to automatically obtain position evaluations when adding sequences
  • the <u> key can be used to recalculate (update) the position evaluations
  • trainer keeps track of when a sequence was last played and allows selection based on how long ago sequences were played
  • progress over time in stored for each player in the sequence files and can be displayed with the <g> key
  • the <A> key can be used like the <a> key but continues from the currently shown position
  • <F9> prints the FEN of the current position, copies it to the clipboard (clipr package added to Imports), and opens up the position on lichess.org
  • <F10> shows histograms / scatterplot of the sequence statistics
  • simplified the arguments of the play() function
  • sequences also save drawn circles and arrows during add mode and replay them during test mode
  • sequences also save the FEN for each move; can use this to select sequences
  • sequences can have a start and/or end comment
  • can add, remove, and select sequence directories with <F8>
  • can evaluate multiple principal variations with Stockfish
  • added a ‘timed’ mode
  • can add, select, and manage bookmarks
  • checks whether a move is legal
  • show visually when a king is in check
  • the <g> key shows an evaluation plot in play mode
  • allow selection based on sequence difficulty
  • keep track of session history

chesstrainer 0.1-0 (2024-12-17)

  • first public release