OptiChess bloghttps://www.optichess.com/blog/ How OptiChess trains, and what real games show. How OptiChess trains: the decisions that decide gameshttps://www.optichess.com/blog/how-optichess-trains/https://www.optichess.com/blog/how-optichess-trains/Tue, 06 Oct 2026 09:00:00 GMTNine kinds of exercise from real games, each checked against the board, set at your level and tilted towards what you get wrong. How OptiChess works, and why.