Ndc6

Ndc6 is a move notation in chess, written in short algebraic notation (SAN). It indicates that a knight from the d-file moves to the square c6. The form is used when more than one knight could reach c6, in which case the origin helps identify which knight moved.

Disambiguation rules explain how this works. If two knights can move to c6, the notation includes the origin file or rank after the piece letter. For example, if knights on d4 and e5 can reach c6, the moves would be Ndc6 and Nec6 respectively, showing which knight moved. If the move captures a piece on c6, the capture marker x is inserted after the disambiguation, giving Ndxc6 or Nexc6.

In cases where two knights are on the same file and both can reach c6, the origin rank is used instead of the file, such as N4c6 or N2c6, to identify the exact knight.

Ndc6 thus serves as a precise record in PGN games, chess literature, and live games, reflecting the standard rules of SAN disambiguation. When only one knight can reach c6, the move is simply Nc6 without any disambiguation.