In the King's Indian Defense, after 1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2, usual is 6...e5 7.0-0, and now Black's most popular moves are 7...Nc6, 7...Nbd7, and even 7...Na6. Sometimes Black futzes around and first plays 6...Nbd7 7.0-0, and now a waiting move like 7...Re8?! or 7...c6?!, thinking that Black need not rush to play ...e5. This is a bad idea, since 8.e5! followed by the pawn sacrifice e6! wrecks Black's pawn structure. In the game below, Black made things worse (as he/she usually does) with 8...dex5 9.dxe5 Ng4 (better is 9...Ne8!, allowing the pawn sac 10.e6! fxe6 11.Ng5) 10.e6! fxe6? (10...Nde5! is better) 11.Ng5! (diagram). I have reached this (or a similar position with Black's pawn back on c6 and ...Re8 having been played) dozens of times in Internet games. Black is already lost in light of White's threats of 12.Bxg4 (winning a piece) and 12.Nxe6 (winning the exchange). Like most of my opponents, Black responded with the "traditional" 11...Nde5?, losing a piece, and lost quickly.