The Evan's Gambit is a chess opening that arises from the Italian Game, specifically after the moves 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4. It is named after its early advocate, the Welsh chess master Captain William Davies Evans.

In this opening, White sacrifices a pawn on move 4 by pushing the b4 pawn forward. This gambit aims to seize control of the center and develop pieces rapidly to launch a swift and aggressive attack against Black's position. The Evan's Gambit is known for its tactical complexity and the initiative it grants White in the early stages of the game.

The Evan's Gambit is an aggressive opening that involves a pawn sacrifice to rapidly develop pieces and initiate a fierce attack against Black's position. It is characterized by tactical complications and the opportunity for both sides to seize the initiative early in the game. Skilled players on both sides can create a highly dynamic and exciting battle on the chessboard.