A pawn sacrifice that totally fits the King's Indian spirit.
1. c2c4  1... g8f6  2. b1c3  2... g7g6  3. e2e4  3... d7d6  4. d2d4  4... f8g7  5. f2f3 The Saemisch System is one of the most reliable and principled options against the King's Indian. White solidifies his center and relies on the space advantage to achieve an opportunity. 5... e8g8  6. g1e2 This move is a good alternative to the more popular bishop moves to e3 or g5. 6... b8c6 Black has many possible plans. This one, Nc6 followed by a6, Bd7, Rb8, and b5, was one of Kasparov's favorites and is used in several King's Indian lines. 7. c1e3  7... a7a6  8. d1d2  8... c8d7  9. a1b1 White also has many possible plans: this opening is rich in strategic ideas. 9.g4, 9.h4, and 9.Nc1 are the most obvious paths. White's idea is to play b2-b4 and maybe also g2-g4 with a commanding pawn army. 9... h7h5 [%c_effect h5;square;h5;type;Interesting;persistent;true] A recent idea. The h5-move, avoiding g4, is one of the discoveries of modern strategy, as it has been validated by engines in the most varied defenses from the King's Indian to the Sicilian Najdorf. I also briefly mention other options. 10. b2b4  10... f6h7 A new move. It looks strange, but it's not bad. Black is getting ready to play e5 and later f5, while waiting for White to show his cards. 11. d4d5 White decides to advance the center to free the d4-square for the knight. 11... c6e5  12. e2d4  12... a8c8 It's also possible to advance the c-pawn immediately. 13. f1e2  13... c7c5  14. d5c6  14... d7c6  15. b1c1 A difficult move. So wants to protect the c4-pawn. 15... c6d7  16. c3d1 