How Not to Run a Chess Site

Chessarena.com is a website run by FIDE and worldchess.com. However, it has several problems.
The first problem is that it has two rating systems, one for worldchess.com and one for the "FIDE Online Arena," which is considered official by FIDE. However, unless you have an official FIDE title, you have to pay 25 € per year to have a FOA rating.
The site is also limited. Each day, there are several tournaments. Some of these tournaments are Worldchess rated and some are FOA rated. In order to play in FOA tournaments, you must have a FOA account, which costs money.
Here is the tournament schedule.
Worldchess Tournaments:
0:01 UTC: 3+3 Swiss, 7 Rounds
4:01 UTC: 10+0 Arena, 1 Hour 30 Minutes
7:01 UTC: 3+2 Arena, 57 Minutes
10:01 UTC: 3+0 Arena, 57 Minutes
11:31 UTC: 15+0 Swiss, 5 Rounds
16:31 UTC: 25+0 Swiss, 4 Rounds
20:01 UTC: 3+2 Arena, 1 Hour 15 Minutes

FOA Tournaments:
1:01 UTC: 1+0 Arena, 56 Minutes
2:01 UTC: 5+0 Arena, 54 Minutes
3:01 UTC: 3+0 Arena, 54 Minutes
6:01 UTC: 3+0 Arena, 57 Minutes
8:01 UTC: 25+0 Swiss, 4 Rounds
9:01 UTC: 3+0 Arena, 57 Minutes
11:01 UTC: 5+0 U1100 Arena, 46 Minutes
12:01 UTC: 3+0 1100-1500 Arena, 57 Minutes
13:01 UTC: 5+0 1500+ Arena, 42 Minutes
14:01 UTC: 15+0 Swiss, 5 Rounds
15:01 UTC: 3+0 Arena, 57 Minutes
17:01 UTC: 3+2 Arena, 57 Minutes
18:01 UTC: 5+0 Arena, 57 Minutes
19:01 UTC: 10+10 Swiss, 4 Rounds

As you can see, there are only 21 tournaments per day, with only 7 available to those without a premium account.
To preserve interest in the blog post, here's a puzzle which will be important later.

Also, the time controls are limited. There are three different ratings, Bullet, Rapid, and Blitz. There is no Classical or Ultrabullet.
Time Controls:
Bullet:
1+0, 2+0, 1+1, 1+2, 2+1
Blitz:
3+0, 5+0, 10+0, 3+2, 3+3, 5+3
Rapid:
15+0, 25+0, 45+0, 10+10, 15+10, 25+10, 45+10
There are only 18 time controls, compared to 1208 non-correspondence time controls on lichess.

But none of these are anywhere close to the biggest problem with chessarena.com.
The biggest problem with chessarena.com is the bots.
In the lobby, there are usually several accounts waiting for games, but the majority of those are bots. I have an incomplete list of roughly 150 bots, since each bot is only active for about 2 hours each day before being replaced by a bot with a different name. However, all of the bots act the exact same every time at all time controls offered by the bots, which are 2+0, 3+0, 5+0, and 15+0.
So, I have developed a move sequence that will win every time. There is one move sequence for white, and one move sequence for black. It works with all bots at all time controls, since the bots always play the same move in the same position.
As white:

This looks like a good game, with good play by both sides. White wins when black's tactic doesn't work.
As black:
This is terrible play by white. White ignores the center, plays Na3 and Nh3, and spends several moves moving the knights back and forth between a3 and b1 and h3 and g1. In addition, at the end of the game, white doesn't even take black's hanging queen. The only tactic in either game is the puzzle from earlier in this blog post.
I'm sure there's a faster sequence with slightly inaccurate play, but that is left as an exercise for the reader.
Disclaimer: The bots didn't use to always play the same moves, and they might start playing different moves or switch the move sequence. If that happens, I will try to update the lines to reflect new best play.

Finally, chessarena.com is full of patzers. The average active player is rated around 1200, which is about 1600 on lichess. Any player rated over 1800 on lichess could easily dominate the site and win nearly every tournament.