Acid Ape Chess is the multi-purpose chess suite aimed at the serious player.

Acid Ape Chess is organized with a tools philosophy in mind. You can leverage its modular design to perform common and less common chess-related tasks.

Acid Ape Chess focuses on:

• quality;
• elegance;
• ergonomics;
• versatility.

Some Acid Ape Chess features:

Online chess

• Play on FICS ICC and Lichess
• Watch live online games
• View online players and their game history
• Non-disruptive in-game chat using a subwindow at the bottom of the chessboard

Chess engines

• Play against UCI or CECP chess engines
• Organize engine duels
• 3 strong builtin engines are provided (Arasan cheng4 and Scorpio)
• Use third-party Open Exchange engines
• Add your own engine binaries
• Adjust engine-specific settings

Analysis

• Analyze with multiple chess engines
• Display the principal variation and stats
• Display Syzygy 7-men EGTB results (uses an online service)
• Easily create annotate and move variations with our move list editor
• Automatic analysis (apply the best move every x seconds)
• Advanced move indicators displaying engine evaluation scores

Premium access to our online database

• 145 million unique positions
• 2.5 million games from the 1800s to 2019
• 211000 OTB players from club players to superstars
• Used by the opening explorer
• Can be used as an opening book for chess engines
• Search for players display games filter by ELO and opening
• Our database is updated regularly
• The perfect tools for your game preparation

PGN support

• Your played games are autosaved
• The PGN Explorer: a file manager with PGN support
• Edit your games (headers move tree annotations)
• Load and save PGN files
• Clipboard support
• Share your games as PGN download links

OTB chess

• Watch live games from major professional tournaments
• Search our online database for players and games
• Use a stylish fullscreen clock for your OTB games

Electronic boards and clocks

• Drivers for the DGT Bluetooth e-Board the DGT USB e-Board the DGT Smart Board the DGT Revelation II the DGT3000 and the DGT Pi
• Play online engine and OTB games with your physical board and clock
• Connect via Bluetooth or USB

Blindfold play

• The board and move list are hidden
• You input your moves via speech recognition
• Opponent moves are announced via speech synthesis

Tactical puzzles

• Solve 900 puzzles split into 3 levels of difficulty
• Import your own PGN puzzles

Simuls

• Challenge from 2 to 16 engine opponents
• Play blindfold simuls

A comprehensive user manual

• Explains everything about AAC and more!
• Presented as a book accessible from AAC
• Contains numerous use cases and tips

Extra features

• Play Chess960
• Choose from many different board and piece themes
• Enter local player details with country flag chess title and ELO
• Use the position editor to encode positions for playing or analysis
• Move speech recognition and synthesis
• A LCD chess clock modeled after real hardware with sound and flag display
• Displays your personal statistics against your opponent
• Use a standalone clock app for your non-connected OTB games

This is Acid Ape Chess Standard Edition which only provides a subset of the listed features. For the full set see Acid Ape Chess Grandmaster Edition.