Powered by the KataGo AI engine. Supports 9x9, 13x13, and 19x19 boards. Features 19x19 full-screen mode (with zoom button), real-time evaluation graphs, thinking time highlights, and move emphasis. Includes offline CPU play, 2-player local mode, position jumping, resume, and UNDO.
Arasan EnginePowered by the Arasan engine. Features 2.5D/Flat view toggle, real-time evaluation/graphs, thinking time highlights, and bad move emphasis. Includes online play, offline CPU play, promotion selection, resume, and UNDO.
Sunfish4 EnginePowered by the Sunfish4 engine. Features maximized board UI, real-time evaluation graphs, thinking time highlights, and move emphasis for positional shifts. Includes online play (with rankings), offline CPU play, 2-player local mode, position jumping, resume, and UNDO.
Pure GameplayNo ads, completely offline. Features 10 CPU difficulty levels. Includes 2-player local mode on a single device with a UI focused purely on board and piece movement.
Pure GameplayPowered by a custom engine. Features online play (quick match), 10 CPU levels, and 2-player local mode on a single device. UI designed for move effects and tactile feedback.
9 Rule VariantsPlay checkers under nine international rule sets on 8×8 and 10×10 boards. Features adjustable CPU strength (1-15), one-move AI support, real-time evaluation graphs, and PDN move history. Includes American/UK, Russian, International, Brazilian, Italian, Spanish, Pool, Thai, and German variants.