Cheating or really that good!!!! Hmmm.....

[Applemania]

..........

[oddcouple]

You are far too suspicious. You have been playing for a few months. Your scores will improve, but not by accusing others of cheating. I started four years ago and always play the 16x16 because they are more challenging. Here's my last piece of advice. Have fun with your own efforts and don't worry about others.

[Applemania]

..........

[AndiLlama]

For what it's worth, I just scored 312 on a 16x16 for solving it in 522 seconds. Yet, the #10 spot on that puzzle is 372 seconds! I very much agree that repetition and practice build speed, as your mind begins to recognize patterns more easily and more easily switches strategies instead of getting stuck.

Good luck, and have fun!