The author has presented a complete opening repertoire for White.After 1. Nc3, the game can take various trans-positional paths. The opening move 1. Nc3 aims to control the center indirectly, and it allows for a flexible development of the pieces. The move prepares for subsequent development, and the game might transpose into various other openings depending on the subsequent moves by both players. While 1. Nc3 is not as popular or mainstream as some other first moves (like 1. e4 or 1. d4), it can be an interesting choice for players who want to steer the game away from well-known theoretical lines early on and enter into positions that might be less studied. As with any opening, understanding the resulting pawn structures, piece placements, and plans is crucial for successful play.