King's Indian Defense: Fianchetto Variation, Yugoslav Variation

A flexible and aggressive chess opening that combines a solid pawn structure with dynamic piece play and counterattacking chances.

The opening in question is a popular and flexible choice that can lead to rich and complex middlegame positions. It is characterized by Black allowing White to establish a strong pawn center while focusing on developing their pieces and preparing for counterplay on the queenside and center. The fianchettoed bishop on g7 is a key component of Black's setup, as it exerts pressure on the long diagonal and can support pawn breaks such as e5 or c5.

White's setup is solid and harmonious, with the knight on f3 and the fianchettoed bishop on g2 providing good control over the central squares. The specific variation involves White playing Nc3, which can support a later pawn push to d5 and also helps to control the e4 square.

Black's main plan in this opening is to create counterplay by attacking White's pawn center, often with moves like c5, e5, or b5. This can lead to sharp and double-edged positions where both sides have chances for an advantage. The opening is well-suited for players who enjoy dynamic and aggressive play, as well as those who prefer a more solid and strategic approach.

Overall, this opening offers a rich and diverse range of middlegame positions, making it an attractive choice for players of all levels and styles.