Chess Glossary : Section N

N
The Algebraic Notation symbol used to record actions made by the Knight. As ‘K’ was already assigned to the King, the kNight gets a capital N.

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NCO
Abbreviation for the book of Openings referenced as Nunn’s Chess Openings, which is compiled by English Grandmaster John Nunn (twice World Champion in chess problem solving).

NN / N.N.
Used to refer to a game score when one of the player’s names is unknown. Likely to come from the Latin phrase nomen nescio, which translates roughly as “Names uNknown “.

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Names of All Chess Pieces
In order of lowest relative value – so, after the Chess Glossary Team – you have: Pawn (1), Knight* (3), Bishop (3), Rook** (5), Queen (9), King (∞).
* often looks like a horse’s head; ** often looks like a castle turret.