Acid Ape Chess

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 engines

• Adjust engine-specific settings

• Use custom PolyGlot (.bin) and Arena (.abk) opening books

• Use custom neural networks

Analysis

• Analyze with multiple chess engines

• Display the principal variation and stats

• Display an evaluation graph

• 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)

• Auto annotate games using a chess engine and the endgame tablebases

• Advanced move indicators displaying engine evaluation scores

Premium access to our online database

• 210 million positions

• 3.6 million games, from the 1800s to 2023

• 270,000 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 continuously

• 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

• Play OTP (over the phone): two players on the same phone or tablet.

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.