What is the gray number beside the player's score during a tournament?
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A player's tiebreak score is calculated by adding the sum of the player's points they have defeated to half the sum of the player's points they have drawn against.
Bob won one game against Mary and two games against John. So Bob gets 1x1.5 points from Mary and 2 x 1.5 points from John, which sums up to 4.5 tiebreak points.
Mary won one game against Bob and drew one game against John. So Mary gets 1x3.0 points from Bob and 0.5x1.5 points from John, which sums up to 3.75 tiebreak points.
John won one game and drew one game against Mary. So John gets 1.5x1.5 points from Mary, which sums up to 2.25 tiebreak points.
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Jeez, how do these things work.
Woohoo I got it. These things are very obscure. Okay, we'll discuss the system that chess.com uses.
Those grey numbers are called tiebrake scores, and here's how they work:
Every player in a tournament has a tiebreak score. The initial score is 0, I believe. And it is calculated and adjusted after every round.
Let's suppose you won 5 games, that would mean you hold 5 points. Let's say you won 3 and drew 1, then you have 3.5 points. Simple enough, right? Not quite. With this system we factor in our opponent's score to determine our own.
Why? Why can't I just tally up my wins and draws?
The basic idea behind factoring your opponents score into your own is that a win against an opponent rated 2100 should mean more than a win against an opponent rated 1500. Sounds fair. Though in truth it's not really about the rating but rather about your opponent's performance in the tournament. If opponent A performs better than opponent B, then it's only fair I get more credit for defeating opponent A.
So how do we go about factoring our opponent's scores into our own?
As pointed out earlier, we all get 1 point for a win, and 0.5 for a draw. If we were in the fourth round of a tournament and my opponent has won 3 games straight already, then they have 3 points, a tiebreak of 3.0 (theoretically anyway). If I beat them in this round (4th round) then I win 3 points because that's what they're worth, and I can go ahead and add that to my tiebrake score. I keep doing that for every opponent I play in each round. If I win against them I take their score, and my tiebreak builds up.
Keep in mind that if it were a draw, I'd only get half of my opponent's score, which would be 1.5 points in this example. And if I lost I'd get 0.
What does it all mean in the end?
It means that even if two players have defeated the same amount of opponents, their tiebrake score will show who defeated the tougher players.
**Now, in the example used above I said that the opponent would be worth 3 points after winning 3 rounds straight, but that was for simplicity's sake and is not entirely true. In truth, their score would probably be higher than that, because remember that they'd also be taking their opponent's scores just as you do.
There are 2 numbers (for example 8/11) on the left of my score in a rapid arena tournament. What is the meaning of them?
Sep 1, 2022
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#9
TAKERO72 wrote:
There are 2 numbers (for example 8/11) on the left of my score in a rapid arena tournament. What is the meaning of them?
That's the game score I believe. So 11 games have been played and the score of wins/draws adds up to 8.
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