When You See a Good Move...Look for a Better One

"When you see a good move look for a better one."-2nd World Champion Emanuel Lasker

This is an oft quoted advice given to all chessplayers, but especially over eager youngsters*. It really is good advice for people of all ages and all skill levels; but recently (after attending a Dvoretsky webinar) I realized that this advice is much deeper than I originally thought. 

*This is actually a reason that blitz and bullet chess can "damage" your chess playing skill. In these games you must blindly trust your intuition. Blitz and Bullet chess are fun, and some aspects are beneficial for your chess, but just be aware to not let it take over your chess thinking.

Let's look at an example first to explain what I'm talking about:

Ok so we've found the good line: 1. Rxe4 fxe4 2. f5! What you should now do (time permitting) is make a mental note that you have this seemingly good line, and store it away in your head. Now look a better move, with the knowledge if there isn't a better move you can always just play 1. Rxe4 fxe4 2. f5!

In order to find that amazing last move it's important to have the knowledge that you can always fall back on your previously determined "good move". 

Below are puzzles where you there are many tempting moves but only one best one. Good luck!