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Ponziani Opening is a chess opening that arises after 1.e4 e5 2.Nf3 Nc6 3.c3. It is classified C44 in the ECO system, and the position after these moves has black to move. The Ponziani prepares d4 with 3.c3, building a big pawn centre. It was popular in the nineteenth century and has since been overtaken by the Ruy Lopez and Italian, largely because 3.c3 does not develop a piece and gives Black time to strike back.
Ambitious but slightly slow. If White is allowed to play d4, the centre is strong; Black's best replies, 3...Nf6 and 3...d5, challenge it before it can be established.
Players who want a rarely-seen but principled 1.e4 opening and enjoy classical centre-building plans.
Each of these is a named opening reached by playing on from 1.e4 e5 2.Nf3 Nc6 3.c3. Open any of them to load the position on the board.