It lets you study moves and experiment endlessly to find the best moves, and ruins online (non live) chess, IMO, but they have to give it to you because nothing would stop you from getting a board and working out the moves that way. It makes it like correspondance chess and not like a real competition, and in my opinion it means that among reasonably well matched players, the one who can spend the most infinite amount of time noodling around on the analysis board has a better chance of winning. And since I don't have endless time to do that I prefer live chess.
Analysis Board

Just started on this site and have been using the Tactics Trainer. I do not understand the Analysis Board at all !
Help.......
On Tactics Trainer, the Analysis Board shows you a computer analysis of the tactic and allows you to play through it to understand why the answer you chose may or may not have been correct. In this example, the analysis shows you that Bxh7+ was scored as a 4.93 pawn advantage for white, while Nxh4 was only 1.43 for white. (The 16 in front of the score tells you how many half moves out the computer has analyzed.)
It lets you study moves and experiment endlessly to find the best moves, and ruins online (non live) chess, IMO, but they have to give it to you because nothing would stop you from getting a board and working out the moves that way. It makes it like correspondance chess and not like a real competition, and in my opinion it means that among reasonably well matched players, the one who can spend the most infinite amount of time noodling around on the analysis board has a better chance of winning. And since I don't have endless time to do that I prefer live chess.
You describe correspondence chess accurately. Online Chess IS correspondence chess. What's the problem?
Just started on this site and have been using the Tactics Trainer. I do not understand the Analysis Board at all !
Help.......