Line 129 covers the main line of the Carslbad Variation of the King’s Indian Defense – the Panno Variation, i.e. 7… a6, with the idea Rb8 and b7-b5.
White literally has a dozen interesting possibilities, all of them leading to complex positions with mutual chances.
Immediate 8. d5 followed by Nd2, Rb1 and b3 seems like a good choice for club level players.
8. Bf4 followed by Rc1 is a fashionable choice among the players from the elite 2700+ club, like in M. Carlsen – H. Nakamura, Saint Louis 2013 game, or in the more recent Bu Xiangzhi – Ding Liren, Danzhou 2014.
[Diagram: White to Move] Rook on a1 is under attack, as well as the c4-pawn, so it looks like Black will be able to get back the material with a reasonably good position. However, White has an unexpected reaction that secures him a long-term advantage!
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