[Bigwig]

I think you played this perfectly. You are most certainly getting the odds to complete here with your stack and K9o. And, going for the check raise all-in is the better play than betting out. You get slightly more fold equity (unless someone gets fancy and shoves), you get to see if more than one player likes their hand, and you don't have to see a scary turn if you bet and are called. So many cards (any paint but a K, any diamond, potential straight) could make things iffy. Well done. If you lost, you lost.