SimpleChessBoard

SimpleChessBoard is simple chess position and game analysis tool available as browser extension and as a web page at https://hxim.github.io/simplechessboard/popup/simplechessboard.html.

Features:

• Load your chess position or game using FEN or PGN.
• Setup pieces manually with your mouse in edit mode.
• You can browse game history and try out different variations. Arrow is showing last move and move recomennded by engine.
• List all legal moves and show them on chessboard
• Checkmate or stalemate is detected
• Analyze position and all legal moves with javascript version of Stockfish from https://github.com/niklasf/stockfish.js
• Show evaluation graph and visalize mistakes or blunders with different colors
• Open position or game in new window via URL. You can also share this URL with friends (in online version) and your position or entire game will be encoded in the link.
• You can also play chess against computer

Copy your FEN or PGN to clipboard and paste it in the input box at the top. You can also manually edit and change FEN displayed there. This tool also supports entering games as list of moves in simplified format like this: "1. e4 e5 2. Nf3 Nf6 3. d4". You have several options to make legal moves on board - Click on move in list of all legal moves in the right or move piece with mouse using drag and drop or select piece and then click on destination square. This is useful on touchscreen.

Note: To add, remove pieces or make illegal moves you need to use edit mode (see below).