The analysis page displays "36 Average centipawn loss" on the bottom right: lichess.org/0POc92Vm

What does it mean?

What does it mean?

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What does it mean?

8 Answers

The centipawn is the unit of measure used in chess as measure of the advantage. A centipawn is equal to 1/100 of a pawn. Therefore 100 centipawns = 1 pawn. These values play no formal role in the game but are useful to players, and essentials in computer chess, in order to evaluate positions. -- http://chess.wikia.com/wiki/Centipawn

A perfect move will lose zero centipawn, but lesser moves will result in a deterioration of the position, measured in centipawn.

This value can be used as an indicator of the quality of play. The less centipawns one loses per move, the stronger the play.

These numbers are provided by the computer analysis, which is powered by Stockfish.

A perfect move will lose zero centipawn, but lesser moves will result in a deterioration of the position, measured in centipawn.

This value can be used as an indicator of the quality of play. The less centipawns one loses per move, the stronger the play.

These numbers are provided by the computer analysis, which is powered by Stockfish.

Mine is really five...I got a one but all I did was scholar's mate

1/100 of a meter

And why can't the position get better - would that be a negative centipawn?

@tgf You cannot improve the position with your move due to the way the engine evaluates it. If your opponent drops his queen, and now you can take it, it will already be evaluated as brilliant for you before you actually do the move and capture. Just if you don't take, your position will get much worse.

Just try it out, analyse a game, click through the moves and watch the position value. It will never get better for a player after his own turn (or if it does, that's just because Stockfish didn't have enough time to calculate). If you have a brilliant, game changing move, the computer will already consider the position winning before your move -- all you have to do is play it.

Just try it out, analyse a game, click through the moves and watch the position value. It will never get better for a player after his own turn (or if it does, that's just because Stockfish didn't have enough time to calculate). If you have a brilliant, game changing move, the computer will already consider the position winning before your move -- all you have to do is play it.

lichess.org/wQq0EX09/black How does the Atomic average centipawn loss work?

So does it indicate the average centipawn loss you've made per move considering the total loss during the game?

Here is an example of average. We will calculate the average centipawn loss of white player.

1. e4 e5

2. Nf3 Nc6

3. a3

{engine analysis of a3: +10cp}

{engine analysis of its best move Bb5: +20cp}

Here the cp = centipawn.

Centipawn Loss = 20 - 10 = 10

3... a6

4. Be2

{engine analysis of Be2: +1cp}

{engine analysis of its best move Bxc6: +15cp}

Centipawn Loss = 15 - 1 = 14

We will stop here since this is just an illustration.

Average centipawn loss = (10 + 14) / 2 = 24/2 = 12

Average centipawn loss = 12

10 is from move 3.

14 is from move 4.

2 is because there are only 2 moves being considered.

If we consider 20 moves for white for example then

Average centipawn loss = (L1+L2+L3+L4+ ... L20) / 20

This centipawn loss is per game.

To get the average centipawn loss of a player, collect some games, get the centipawn loss per game then calculate it this way.

G1 = 60 centipawn loss

G2 = 25

G3 = 50

G4 = 200

G5 = 125

G6 = 42

G7 = 75

G8 = 175

G9 = 10

G10 = 88

Player average centipawn loss in 10 games = 60 + 25 + 50 + ... 88 = 850/10 = 85

Kasparov has an average centipawn loss of around 13 based on Crafty engine. This could be higher if stockfish is used since Stockfish is stronger than Crafty,

@RealKool thank you so much for explaination!

@zcnsr,

Which games do you use to calculate? And what other data do you use as a base.

When you compare 2 data, you have a base data and the calculated data.

With the implemented chess insights this average CPL can now be easily retrieved.

Which games do you use to calculate? And what other data do you use as a base.

When you compare 2 data, you have a base data and the calculated data.

With the implemented chess insights this average CPL can now be easily retrieved.

@RealKool, I am pretty sure your average centipawn loss of a player calculation is incorrect. Your games G1 through G10 all will have different move numbers so to get the correct average centipawn loss you need to consider that. Basically to get the average centipawn loss of a player you would have to sum up the CPL of every move of every game and then divide by the total number of moves over all games, which is equivalent of taking a weighted average of the games by move number which would look something like:

(G1 * m1 + G2 * m2 + .... + G10 * m10)/(m1 + m2 + ... + m3) where m1, m2... is the number of moves made in that game.

(which really is the same as counting all centipawn loss over all games and dividing by total moves of all since G1 * m1 is the average times the number so it gives the total centipawn loss of game 1)

(G1 * m1 + G2 * m2 + .... + G10 * m10)/(m1 + m2 + ... + m3) where m1, m2... is the number of moves made in that game.

(which really is the same as counting all centipawn loss over all games and dividing by total moves of all since G1 * m1 is the average times the number so it gives the total centipawn loss of game 1)

@RealKool I don't understand about your explantion

@cd2017 Which part of RealKool's explanation is confusing?

https://en.lichess.org/forum/general-chess-discussion/average-centipawn-loss

great site! and good explanation about centipawn loss. As another writer has said, it would be useful to know the common themes/patterns around my centipawn loss. At the moment the analysis will give it me by piece, which is really good, but I would like it across some kind of thematic.

i.e. centipawn loss in the following categories:

missed a knight fork, missed a pin, missed a discovered check, missed a double attack, missed a skewer.

Something like this would be much more helpful to me to improve my game - I think.

i.e. centipawn loss in the following categories:

missed a knight fork, missed a pin, missed a discovered check, missed a double attack, missed a skewer.

Something like this would be much more helpful to me to improve my game - I think.

Hello,

I'd like to throw an "old hat" of L. Pachmann's into the ring: he suggested evaluating a position not only by the material balance, but also taking into account some very simple statistics of a position

1. Count your number of "free" squares, it is those, where you can move a piece of yours without risk of it being capture, despite of it's value

2. Repeat this for the free squares of your opponent

3. Count your number of legal moves

4. Repeat this for your opponents legal moves

In his opinion material is only one out of four factors influencing the game, the others being time, space and initiative. Steps one and two try to account for space, while number three and four do so for space and time.

Best of regards

I'd like to throw an "old hat" of L. Pachmann's into the ring: he suggested evaluating a position not only by the material balance, but also taking into account some very simple statistics of a position

1. Count your number of "free" squares, it is those, where you can move a piece of yours without risk of it being capture, despite of it's value

2. Repeat this for the free squares of your opponent

3. Count your number of legal moves

4. Repeat this for your opponents legal moves

In his opinion material is only one out of four factors influencing the game, the others being time, space and initiative. Steps one and two try to account for space, while number three and four do so for space and time.

Best of regards

I wish someone would make a way that you could estimate the playing strenght of the player.Like it would say your estimated game performance is 2150.It would maybe use an average centipawn loss scale and other factors.

It would be nice to know if you played higher than your rating

It would be nice to know if you played higher than your rating

centipawn=1/100 of a pawn.

Therefore, if your centipawn loss is 23, then that means that, on some strategical and positional level, you've made concessions that are equivalent to losing 23% of a pawn.

Only registered members with one week of lichess activity can contribute to the Q&A.

More explanation if needed: you had checkmate in a few moves, but blundered it - how much centipawn does lichess consider you lost there, as the evaluation was #x (mate in x) and becomes a score after you missed the sequence.

Thanks!