Here is a game where I opened with the Reti as White, and Black fumbled with a King's Indian defense.  Notice the small positional errors which led Black to an early loss.

well reti was a great player, respected by all time grandmaster...and his opening is often used at high levels....I like the flexibility...anyway nice game..compliments

i think you made title mistake black didnt play kings indian defence at all.....

You guys are right, it was not a KID; I played the RETI against a KID in a different game, I must have been confused, thank you for pointing it out.

Also, thank you for pointing out the Rd8 mating combo...I saw it after I finished the game (and Fritz pointed it out), and while I considered it during the game, I simply didn't look deep enough I guess.

Good game, exploiting his poor positioning, shame you missed 26.Rd8+ but a very nice finish mating with a pawn, well played.