best opening starting with k


Kalashnikov
The King's Gambit sucks. If Black has any idea what he's doing, he's already better.
It would be between the Kalashnikov, Kan, and the King's Indian Defense. The King's Indian Attack is ok against lines where the Black LSB is locked in behind the pawn chains, like against the French or 2...e6 Sicilians, but trying to use it as an all-around exclusive system is bad as Black can actually gain the advantage in certain lines.