Shogi Lab: Sunfish Engine

Now supports KIF/CSA import, playback, and analysis. Review your games with Sunfish4 engine evaluation and key-moment markers. Online play included.

This is a shogi app powered by the full-featured Sunfish4 engine. With clear piece design and calm, intuitive controls, you can enjoy smooth gameplay from the opening to the endgame. It includes real-time evaluation during matches as well as game record replay and analysis features, allowing you to complete the entire flow from playing to reviewing within the app. Online matches with rankings are supported, and offline CPU matches are also available.

Main Features

▪ In-Game Analysis (During Match) ・View evaluation values and graphs in real time.

▪ Thinking Time Visualization (During Match) ・Display thinking time on the move list. ・Long thinks are highlighted in red (top 5%) and yellow (top 15%).

▪ Key Move Detection (During Match / Analysis) ・Automatically highlights moves where the evaluation changes significantly.

▪ Game Record Analysis (Analysis) ・Replay, fast-forward, and rewind past games for review. ・Import KIF and CSA files for replay and analysis.

▪ Position Jump (Analysis) ・Instantly move to any position within the game record.

▪ Save & Resume (During Match) ・Pause a match and resume later.

▪ Adjustable CPU Strength (During Match) ・Set the difficulty level from practice to serious play.

▪ First/Second Move Selection (Start) ・Choose to play as Black or White.

▪ Take Back Move (During Match) ・Undo the last move.

▪ Legal Move Display (During Match) ・Show available moves to help prevent mistakes.

▪ Haptics & Animations (Controls) ・Smooth and responsive interaction.

▪ Online Multiplayer ・Supports ranked online matches. ・Offline CPU matches and local two-player mode are also available.