King's Indian Defense: Sämisch Variation, Closed Variation

A solid and aggressive chess opening for both white and black, focusing on a strong pawn structure and active piece play.

The opening is a popular and aggressive choice that can lead to sharp and complex middlegame positions. It is characterized by white's pawn structure, which aims to control the center and restrict black's pawn breaks. White's f3 move supports the e4 pawn and prepares to develop the dark-squared bishop to e3, while black's pawn structure is more flexible, allowing for counterplay on the queenside or in the center.

In this variation, black often aims for a pawn break with f5 or c6, while white tries to maintain a strong pawn center and create attacking chances on the kingside. The opening is known for its double-edged positions, where both sides have chances to create imbalances and exploit weaknesses in the opponent's camp.

The Closed Variation specifically refers to the position after white's d5 move, which closes the center and forces black to find counterplay on the wings. This can lead to exciting battles, as both players try to outmaneuver each other and create threats on opposite sides of the board.

Overall, this opening is a fascinating and challenging choice for both white and black players, offering rich strategic and tactical possibilities. It is well-suited for players who enjoy sharp, complex positions and are willing to take risks in order to seize the initiative.