I have gotten +1 on a tactic failed on the first move before, happened to me twice. it was on the phone app.. I thought the problem was my phone losing WiFi connection in the middle of the tactic, since this has never happened to me on the website.
Why do I get positive score in tactics even if it is incorrect?
Sort:
Deranged wrote:
Actually, I just did a puzzle recently where I got the first move incorrect and gained rating point(s). It's the only time this has happened to me. I reasoned to myself that perhaps they gave partial credit for finding the 2nd best move, but perhaps it was just a glitch.
It must have been a time bonus. You found the wrong answer but you found it fast. 
Martin_Stahl wrote:
My guess is it isn't necessarily related to specific puzzles, but is likely a bug with the rating algorithm.
The OP's tactic was https://www.chess.com/puzzles/problem/526676
I finally understood what the author mentioned - I experienced one just the day before. It was a "1200"-rated problem and I finally received a +1 for it.
Horsemoves2andhalf wrote:
Hi there! I was solving some tactics and I solved it incorrectly but still got a +1 for it. I mean, I do like getting positive scores but I'm curious why would I get that without actually solving a puzzle correctly? Also, I was incorrect at the very first step so it can't be partial scoring.
Similarly, I have got negative scores even on solving half the puzzle correctly. Confusing.
They give you points for th emoves you solved correctly, you would get more if you solved the entire puzzle but if you get 3 moves right and the 4th one you miss it gives you points for the correct moves.
Red_aardvark wrote:
Horsemoves2andhalf wrote:
Hi there! I was solving some tactics and I solved it incorrectly but still got a +1 for it. I mean, I do like getting positive scores but I'm curious why would I get that without actually solving a puzzle correctly? Also, I was incorrect at the very first step so it can't be partial scoring.
Similarly, I have got negative scores even on solving half the puzzle correctly. Confusing.
They give you points for th emoves you solved correctly, you would get more if you solved the entire puzzle but if you get 3 moves right and the 4th one you miss it gives you points for the correct moves.
In recent days, a tiny minority of puzzles do give rating points of +1 for the first move being incorrect.
eric0022 wrote:
Red_aardvark wrote:
Horsemoves2andhalf wrote:
Hi there! I was solving some tactics and I solved it incorrectly but still got a +1 for it. I mean, I do like getting positive scores but I'm curious why would I get that without actually solving a puzzle correctly? Also, I was incorrect at the very first step so it can't be partial scoring.
Similarly, I have got negative scores even on solving half the puzzle correctly. Confusing.
They give you points for th emoves you solved correctly, you would get more if you solved the entire puzzle but if you get 3 moves right and the 4th one you miss it gives you points for the correct moves.
In recent days, a tiny minority of puzzles do give rating points of +1 for the first move being incorrect.
Hm, never had that problem before
sometimes there is more than one good move but the other one is just slightly better. This is why they still give you a point.
it's b/c the puzzle is not yet rated.click the question mark next to the puzzle's rating
KingsHorseman wrote:
I just found a new problem with the +1 credit for the first wrong move.
In this instance the wrong move receives a merciless checkmate in 5! So I'm sure the score is in error.
https://www.chess.com/puzzles/problem/546524/practice?autostart=1
After 1 ...Rg8?? you score +1 (for attempting to remove the queen from the g-file for a mate on g2?) But you get mated by 2. Rxh7+!! Kxh7 3. Rf7+ Kh6 4. Qh4+ Kf6 5. Qf7+ Kg5 6 Rf5#
The puzzle is rated 800 but I think this is also incorrect. An 800 rated player might find the correct answer (forcing a Queen trade on g6 to eliminate immediate mate threats and maintain a 3-point advantage for the end-game), but I don't think an 800 rated player would think that deeply about the move other than a knee-jerk "let's get rid of the queens and see what happens." I'm not even sure an 800 player would understand the trade is forced because of the pressure applied to g2.
The whole puzzle, which is a good one, is scored entirely incorrectly imho.
Anyone encounter any others?
Your puzzle is now rated 3202 so its rating was indeed a mistake. I guess that happens when the number of attempts is too low (now it is 5241 with a succes rate of 34 %).
I was also awarded of +1 for making the wrong first move in puzzle 1369038 which has a temporary rating of 2333 for only 95 attempts. My first move was 1...Nc6?? which ends up with a queen trade and a small disavantage for us because we have less pawn. I did this because I was unable to find a superb mate in 3, and I didn't see any better move.
Jun 24, 2021
0
#31
As some have hinted at I am pretty sure this happens if a puzzle's rating is provisional/pending. Newer puzzles are like this and can never affect a score negatively, hence the +1, even if you get it completely wrong.
Let me explain this. When you do these kind of puzzles, you might find it weird. I, myself found it weird, too, but have you noticed that it says "Pending" at the rating section? This means that the puzzles are new, and not much people tried it, so there isn't an exact rating. Puzzle ratings are generated by the failure and success of different rated users. if a 3000 rated can't do it, then the rating is more than 3000. If you found that you get points for wrong answers, then you might be the first to answer these puzzles.
Jun 24, 2021
0
#33
6942isverybigbrain wrote:
The change in rating is determined by the percentage of moves correct, and the difference between the puzzle’s rating and your own rating.
Some puzzles give points for a partial solution, but not all do.
Jul 12, 2021
0
#34
This happens when they are trying out new puzzles on us and have not yet gathered enough statistics to assign the puzzle a rating. It's sort of a reward for being a guinea pig in their experiment.
Jul 13, 2021
0
#35
Coz the tactics appreciate ur try and know u are trash at tactics and u Have no chance to solve that tactic
Jul 13, 2021
0
#36
Martin_Stahl hat geschrieben:
PoolPlayerToo wrote:
happened to me yesterday. I got 0 out of 4 moves correct and it still gave me a +1 score.
Wow, looks like a bug
No, I don´t think it´s a bug. I do really a lot of taktics (and I mess up a lot) and now and then it happens. Both Ideas are right I think: when you do i.e. 3 aut of 4 moves correctly and show, that you got the right basic idea and/or when you get the second best solution which leads also to win something (game, material) but in a longer run. It is a good system, I like it. It is a bit like in the lectures: there is coming a grey icon and the text saiys for example that this move is as good as the surched move or nearly as good. It´s a fair system for my opinion, that you don´t get always punished for not getting the 100% idea but grabbed another, mybe 95% idea. I like it!
Jul 13, 2021
0
#37
When you play a puzzle that has no rating yet (because it is very new and too few peole played it so that chess.com does not know how diffcicult it is), you still get one point, even if you get it wrong. Also, the puzzle does not count against your limit of puzles per day. I think this is meant to be compensation for giving you a puzzle that might be way too hard for you.
I got +5 for a 2/4 correct, is this normal?
Mar 24, 2022
0
#39
TanPrivate wrote:
I got +5 for a 2/4 correct, is this normal?
It's possible. Some give partial credit
Whenever I play puzzles, every day two of those puzzles will not reward me for getting them correct and my rating does not change. Such puzzles are also not even recognized on my history as if they never existed. Meanwhile, getting such a puzzle incorrect will deduct nearly 50 points regardless of the puzzles rating. This glitch has caused my puzzles rating to plummet despite having spent so much collective time planning solutions and such just to realize 0 points are rewarded and so much is deducted for innacuracies. Has anyone else experienced this?
Actually, I just did a puzzle recently where I got the first move incorrect and gained rating point(s). It's the only time this has happened to me. I reasoned to myself that perhaps they gave partial credit for finding the 2nd best move, but perhaps it was just a glitch.