Reported by https://lichess.org/forum/lichess-feedback/bug-analysis-algebraic-notation-error-in-move-disambiguation#1
To reproduce: go to https://lichess.org/LdGAC0HO#30 (the position after 15... c4) and enable analysis. The recommended move is 16. Ncd2 but there is no knight on the c-file, it should be Nbd2.
