People! People! This is why I love woodshover, while others "love" their embarrassing position in life. A woodshover sees, knows, understands terms like "seventeen", "eighteen", and "four"! I'm sorry woodshover, I get sooo annoyed by these "people"! Go on, continue, sorry to interrupt...
O.K. Even though everyone by now knows that I suffer from minor brain damage , I read every word of from the OP and took it to heart.
Where in his post does it say he is four years of age - still in pre-school?
OMG! woodshover, let me handle this one. LISTEN musikman, I will block you in a New York minute! I will drop you like a 3 foot putt! I will kick you like a U.S. owngoal! I will smash you like an overhead! DO NOT insult pre-school!
There, that ought to teach these musikal types!
Out of curiosity, how long have you been playing? Or how old are you? Just about everyone has the story about how they could beat the 3 people they knew how the pieces moved (and the one guy who was shaky on all the rules) and we were pretty much a world champion... then moving in among the next level of chess players find out how little we really knew.
Did you beat the #1 guy and the chess coach consistently or just happen to win a game? How many games are you basing the computer results off of? Did you beat it on 8 twice and 9 almost beat it but lost in an unfair way, took back some moves, and beat it later... and now not taking it seriously you can't trash it on level 5?
Anyway I'm with some others in that suddenly losing your ability to play doesn't sound like a real thing. If you're just rusty from taking some time off, then playing a few games will get you back up to speed pretty quickly. If it's been a few years then it might take longer.