New Elo Estimator


Thank you very much for posting these, I can confirm that these are indeed the best moves as recognized by the software

How do you calculate ELO from solving positions?
I estimate it by asking you for a move then asking an engine to see if it thinks the move is good (how good) and also seeing how long it took you to make that move (time doesn't have a huge impact on the score, unless you play it like bullet chess). This isn't exactly how it works, but that's the idea

yep :) do all those moves rly fast and my software just might tell you you're a gm!
I moved within a few seconds on each and got 2575.
When I took it the first time it gave me a rating of 17XX :p I guess I took too long on some of them. Some of them I saw the idea quickly but calculated trying to find the best moves.
I agree it would help to know there's a time limit and let the user know how many positions they're going to face. That way they don't get frustrated and start guessing or something.

yep :) do all those moves rly fast and my software just might tell you you're a gm!
I moved within a few seconds on each and got 2575.
When I took it the first time it gave me a rating of 17XX :p I guess I took too long on some of them. Some of them I saw the idea quickly but calculated trying to find the best moves.
I agree it would help to know there's a time limit and let the user know how many positions they're going to face. That way they don't get frustrated and start guessing or something.
Roger that, I will make this more friendly and update it hopefully by the end of this weekend. My to do list includes:
1) give a progress bar
2) tweak the time function
3) tell people it is timed
4) give the correct answers at the end
5) make it look nicer?
edit: by the way, thanks a lot for the feedback

yep :) do all those moves rly fast and my software just might tell you you're a gm!
I moved within a few seconds on each and got 2575.
When I took it the first time it gave me a rating of 17XX :p I guess I took too long on some of them. Some of them I saw the idea quickly but calculated trying to find the best moves.
I agree it would help to know there's a time limit and let the user know how many positions they're going to face. That way they don't get frustrated and start guessing or something.
hahaha, towards the end thats basically what i was doing.

The translucent look was distracting at first... but after the first puzzle I forgot about it. If I had my way I'd make it so you can't see the background, but it wasn't a big deal. Maybe some people liked it.
Oh, and out of habit I kept looking for a "white to move" prompt of some kind. Even if it's just at the beginning e.g. "white to move in all positions" that would be nice :)

I do have a status update, but I removed it because it was white to move in all positions. I decided just to keep the board in white's orientation but I can definitely but the status back.

No matter how I size my window, I need to scroll down to see the a and b files. Mozilla Firefoz Windows 7

I tried it twice. The first time, I got 1274 and the second time 1495. I spent a few moments more on each puzzle the second time. Is that normal?
It seems I missed a lot of them. However the look of the board is terrible, the black pieces disappear on the dark purple of the squares.Please put a more neutral background, as it is , it is really distracting. And just use a normal wood color board, like in chess.com
There is a difference of about 300 points between my OTB and your test, so I cannot understand what it is actually testing. Strategy? Tactics? For sure it is not testing endgames or opening skills, and they are part of the real OTB rating.
But yes, you need to do a lot of work on improving the look, and give some feedback to the user. To know how many positions one will play. Is it important the time used? (Because I had to do other things, while doing this test, so I don't know if impacted my final rating)
I don't know the number of positions I played. But in general for an OTB rating one must play 25 games. So I guess the number of positions must be 25 or more.

I presume this is more an exercize in web programming than an attempt to accurately predeict ratings, correct?

- You are not nearly strong enough to create such a test.
- This is a tactics test not a chess rating test.
- Most of these puzzles can be solved correctly without having the slightest clue as to the correct follow up, which is just terrible.
- A timer is bad enough, having one that you don't tell people about is the most stupid thing that I have ever heard.
- If my elo is 1425 like your test told me it is I am going to kill myself, I'm not even bad tactically either...
- Plus everything everybody else has told you!