user170: I want to organize an amateur chess tournament inside the company I work for. I am looking for a convenient way of creating groups, keeping the scores, and getting some statistics.
Is there an online solution to organize a chess tournament? Do you have some examples, stories, or tips for organizing similar office/company tournaments? Please share them!

user791: Here's another Swiss pairing solution (fully free :D)

OpenSwiss

good luck with the tourney

user3368: You can create online tournaments on  http://www.chessmoon.com/ 
it supports both Round Robin and Swiss with different time controls and options.

user10199: If you want online solution you should try https://www.swips.eu, it is easy to use and free.

user7575: 
[...] keeping the scores and getting some statistics.
Do you have some examples, stories or tips for organizing similar
  office/company tournaments?

Rankade, our free ranking system, can be used in office/company for tracking results. It doesn't fit your need in organizing a tournament, but it allows you to keep the scores and getting some statistics (including Elo-like - here's a comparison - rankings and matchup stats) in a playing group (even through different tournaments).
Here are some examples for chess, foosball, and table tennis played at workplace, and we host many company/office playing groups for videogames, pool, crokinhole, carroms, boardgames, and more.

user26882: If you are looking for an easy-to-use, FIDE-approved online platform, take a look at ChessManager.


user17004: We have been organizing an amateur tournament every month for five years. We have tried different options. In my experience, the best solution is to divide the players into groups of 4 players based on their chess strength. For example, if you have 8 players. That would produce 2 groups of 4 players. If you have 7 players, that would produce 1 group of 4 players, and 1 group of 3 players. Every player would pick randomly a number between 1 and 4. Automatically, all the pairing is done. There exists a system for 3 or 4 players. You can see it in the following link: https://handbook.fide.com/chapter/C05Annex1

The main advantage of this system is that you can reduce the chess strength difference between the groups. For example, if you have 4 extraordinarily strong players and 4 very weak players, if you put the weak players against the strong players, the weak players will feel very bad, after the games finished. Most likely, they will not play the next tournament. Also, it would be boring for the strong players. With this system, people will be motivated after the tournament because if you have 3 groups, you will have 3 gold medals winners, 3 silver medals winers, and 3 bronze medals winers. One big plus is also that you would not need chess software to run the tournament. Using a chess software is a big challenge for some people. Also, it takes some time to  input the information into the program. Finally, a big advantage of this system is that you would need at most 3 games for each group. Sometimes a Swiss system needs 11 rounds. Everything depends on the number of players. This is my experience. Of course, it is not a perfect solution. Any questions, let me know. Good luck with your chess journey!
P.S.
If you have a number that is not multiple of 4, you need to play with the numbers.
For example, if you have 9 you can make 3 groups of 3 players, or the arbiter can play and have 10 players. After that you can make 2 groups of 4 and 1 of 2. The group of 2 players would play a match of 3 games. You can go for the solution that you consider the best because there is no optimal mathematical solution when the number is not a number like 8 or 7.

user2474: The best way to do it is using Swiss Manager. Swiss perfect has a bug in which after it reaches a certain number of participants, it just fails on certain aspects.
I think Swiss Manager is not that user-friendly, but I was able to learn it by myself though. There you can even create a local rating exclusively for your own company. Swiss Manager takes care of that --  it counts how much ratings a player has earned/lost after the tournament.
Now if you are not that tech savvy you can do it manually. If it is just 30 or less participants it's pretty handy. Just make an initial list (the strongest player as the #1 seed).
Pairings for the first round goes like this and you have the option to reverse colors. Say there are just 8 participants (for simplicity purposes). The first half of the list, which are players #1 to #4 will play against #5 to #8 respectively:
Round 1:
1 vs 5
6 vs 2
3 vs 7
8 vs 4
Notice the alternating pattern in which #1 is white, #2 is black and #3 is white.
In the next round, probably the top 4 players won and the others lost. top seed and 2nd seed will face in the later part so You will just do the pattern again, this time among those on the same point groups: #1-#4 all have one point and hence will play each other while #5-#8 will also do the same.
Round 2 pairings looks like this and again, the ones on the upper part vs the lower parts ON THE SAME POINT GROUP. Hence #1 & #2 vs #3 & #4 
and #5 & #6 vs #7 & #8:
Round 2:
4 vs 1 
2 vs 3
5 vs 8
7 vs 6
Just note about the colors. As much as possible, players should change colors after every round. But there are exceptions in which some players can go two rounds with the same color BUT HE/SHE CANNOT GO FOR THREE ROUNDS WITH THE SAME COLOR.
Another thing to mention is sometimes, you need to pair a player to another player which is not of his point group simply because there are no other player whom he can play in the same group. Example is when one match ended in a draw in the first round. So these two players with half points might play against 1-pointers or even 0-pointers in the 2nd round. Just depends on the scenario of availability of players.
Basically that's what the pairing program's algorithm does. On the later rounds you can continue the pattern on which players on the same point group play each other as long as they haven't played each other.
By the way, two types of tournament styles are: 

Round Robin (Sub types of this type is double and triple round robins, etc)
Swiss (could be 5 rounds, 6 rounds, 7 or 9, etc. Simply depending on the tournament size. You can calculate it in the form of 2x  in which x is the number of rounds needed to produce. 2x should be equal or greater than the number of participants.

Say there are 100 participants, in order for 2x to be greater or equal to 100, x must be 7. So 7 rounds could do it.
But then again, the tournament manager has the right to increase the number of rounds. It will be stated in the so called "Ground Rules" or "Mechanics of the Tournament".
It is really pretty easy. For not so serious tournaments this should work, but for serious ones, Tie-breaks, on the later rounds, will also add complexities as to who should play who in the next rounds.
P.S.: Sorry this is just a quick reflection in my past experience. I know my answer is not well organized/formatted.

user749: The biggest problem with Swiss pairing programs for desktop is that there is nothing that is fully free for windows. Also they are very old and ugly. 
I was glad to find Vega Chess which is a very good chess pairing program available with the least limitations. It is also FIDE approved.
It is fully free on Linux and free for 30 player tournaments on windows. It is also one of the better GUI compared to the more popular ones.

Android phones have a few interesting manager apps for organizing chess tournaments:

Swiss System Tournament
Quick Tournament Maker


user187: This isn't an online solution but one program you could use is swiss perfect, which manages tournaments and allows various options.

170: <p>I want to organize an amateur chess tournament inside the company I work for. I am looking for a convenient way of creating groups, keeping the scores, and getting some statistics.</p>
<p>Is there an online solution to organize a chess tournament? Do you have some examples, stories, or tips for organizing similar office/company tournaments? Please share them!</p>
 791: <p>Here's another Swiss pairing solution (fully free :D)</p>

<ul>
<li><a href="http://sourceforge.net/projects/oswiss/" rel="nofollow noreferrer">OpenSwiss</a></li>
</ul>

<p>good luck with the tourney</p>
 3368: <p>You can create online tournaments on  <a href="http://www.chessmoon.com/" rel="nofollow">http://www.chessmoon.com/</a> 
it supports both Round Robin and Swiss with different time controls and options.</p>
 10199: <p>If you want online solution you should try <a href="https://www.swips.eu" rel="nofollow">https://www.swips.eu</a>, it is easy to use and free.</p>
 7575: <blockquote>
  <p>[...] keeping the scores and getting some statistics.</p>
  
  <p>Do you have some examples, stories or tips for organizing similar
  office/company tournaments?</p>
</blockquote>

<p><a href="https://rankade.com" rel="nofollow">Rankade</a>, our free ranking system, can be used in office/company for tracking results. It doesn't fit your need in <em>organizing a tournament</em>, but it allows you to <em>keep the scores and getting some statistics</em> (including Elo-like - here's a <a href="https://rankade.com/ree#ranking-system-comparison" rel="nofollow">comparison</a> - <strong>rankings</strong> and <strong>matchup stats</strong>) in a playing group (even through different tournaments).</p>

<p>Here are some examples for <a href="https://rankade.com/dojo" rel="nofollow">chess, foosball, and table tennis</a> played at workplace, and we host many company/office playing groups for videogames, pool, crokinhole, carroms, boardgames, and more.</p>
 26882: <p>If you are looking for an easy-to-use, FIDE-approved online platform, take a look at <a href="https://www.chessmanager.com/en/solutions/software" rel="nofollow noreferrer">ChessManager</a>.</p>
<p><a href="https://i.stack.imgur.com/LN0Sf.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/LN0Sf.png" alt="enter image description here" /></a></p>
 17004: <p>We have been organizing an amateur tournament every month for five years. We have tried different options. In my experience, the best solution is to divide the players into groups of 4 players based on their chess strength. For example, if you have 8 players. That would produce 2 groups of 4 players. If you have 7 players, that would produce 1 group of 4 players, and 1 group of 3 players. Every player would pick randomly a number between 1 and 4. Automatically, all the pairing is done. There exists a system for 3 or 4 players. You can see it in the following link: <a href="https://handbook.fide.com/chapter/C05Annex1" rel="nofollow noreferrer">https://handbook.fide.com/chapter/C05Annex1</a></p>
<p><a href="https://i.stack.imgur.com/xQezf.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/xQezf.jpg" alt="Round Robin 3-4 players" /></a></p>
<p>The main advantage of this system is that you can reduce the chess strength difference between the groups. For example, if you have 4 extraordinarily strong players and 4 very weak players, if you put the weak players against the strong players, the weak players will feel very bad, after the games finished. Most likely, they will not play the next tournament. Also, it would be boring for the strong players. With this system, people will be motivated after the tournament because if you have 3 groups, you will have 3 gold medals winners, 3 silver medals winers, and 3 bronze medals winers. One big plus is also that you would not need chess software to run the tournament. Using a chess software is a big challenge for some people. Also, it takes some time to  input the information into the program. Finally, a big advantage of this system is that you would need at most 3 games for each group. Sometimes a Swiss system needs 11 rounds. Everything depends on the number of players. This is my experience. Of course, it is not a perfect solution. Any questions, let me know. Good luck with your chess journey!</p>
<p>P.S.
If you have a number that is not multiple of 4, you need to play with the numbers.</p>
<p>For example, if you have 9 you can make 3 groups of 3 players, or the arbiter can play and have 10 players. After that you can make 2 groups of 4 and 1 of 2. The group of 2 players would play a match of 3 games. You can go for the solution that you consider the best because there is no optimal mathematical solution when the number is not a number like 8 or 7.</p>
 2474: <p>The best way to do it is using <a href="http://swiss-manager.at/" rel="nofollow noreferrer"><strong>Swiss Manager</strong></a>. <em>Swiss perfect</em> has a bug in which after it reaches a certain number of participants, it just fails on certain aspects.</p>

<p>I think Swiss Manager is not that user-friendly, but I was able to learn it by myself though. There you can even create a local rating exclusively for your own company. Swiss Manager takes care of that --  it counts how much ratings a player has earned/lost after the tournament.</p>

<p>Now if you are not that tech savvy you can do it manually. If it is just 30 or less participants it's pretty handy. Just make an initial list (the strongest player as the #1 seed).</p>

<p>Pairings for the first round goes like this and you have the option to reverse colors. Say there are just 8 participants (for simplicity purposes). The first half of the list, which are players #1 to #4 will play against #5 to #8 respectively:</p>

<p>Round 1:
1 vs 5
6 vs 2
3 vs 7
8 vs 4</p>

<p>Notice the alternating pattern in which #1 is white, #2 is black and #3 is white.</p>

<p>In the next round, probably the top 4 players won and the others lost. top seed and 2nd seed will face in the later part so You will just do the pattern again, this time among those on the same point groups: #1-#4 all have one point and hence will play each other while #5-#8 will also do the same.</p>

<p>Round 2 pairings looks like this and again, the ones on the upper part vs the lower parts ON THE SAME POINT GROUP. Hence #1 &amp; #2 vs #3 &amp; #4 </p>

<p>and #5 &amp; #6 vs #7 &amp; #8:</p>

<p>Round 2:
4 vs 1 
2 vs 3</p>

<p>5 vs 8
7 vs 6</p>

<p>Just note about the colors. As much as possible, players should change colors after every round. But there are exceptions in which some players can go two rounds with the same color <strong>BUT HE/SHE CANNOT GO FOR THREE ROUNDS WITH THE SAME COLOR</strong>.</p>

<p>Another thing to mention is sometimes, you need to pair a player to another player which is not of his point group simply because there are no other player whom he can play in the same group. Example is when one match ended in a draw in the first round. So these two players with half points might play against 1-pointers or even 0-pointers in the 2nd round. Just depends on the scenario of availability of players.</p>

<p>Basically that's what the pairing program's algorithm does. On the later rounds you can continue the pattern on which players on the same point group play each other as long as they haven't played each other.</p>

<p>By the way, two types of tournament styles are: </p>

<ol>
<li><strong>Round Robin</strong> (Sub types of this type is double and triple round robins, etc)</li>
<li><strong>Swiss</strong> (could be 5 rounds, 6 rounds, 7 or 9, etc. Simply depending on the tournament size. You can calculate it in the form of 2<sup>x</sup>  in which x is the number of rounds needed to produce. 2<sup>x</sup> should be equal or greater than the number of participants.</li>
</ol>

<p>Say there are 100 participants, in order for 2<sup>x</sup> to be greater or equal to 100, x must be 7. So 7 rounds could do it.</p>

<p>But then again, the tournament manager has the right to increase the number of rounds. It will be stated in the so called "<strong>Ground Rules</strong>" or "<strong>Mechanics of the Tournament</strong>".</p>

<p>It is really pretty easy. For not so serious tournaments this should work, but for serious ones, Tie-breaks, on the later rounds, will also add complexities as to who should play who in the next rounds.</p>

<p><strong>P.S.</strong>: Sorry this is just a quick reflection in my past experience. I know my answer is not well organized/formatted.</p>
 749: <p>The biggest problem with Swiss pairing programs for desktop is that there is nothing that is fully free for windows. Also they are very old and ugly. </p>

<p>I was glad to find <a href="http://www.vegachess.com/tl/index.php/Home_page_English.html" rel="nofollow noreferrer">Vega Chess</a> which is a very good chess pairing program available with the least limitations. It is also FIDE approved.</p>

<p>It is fully free on Linux and free for 30 player tournaments on windows. It is also one of the better GUI compared to the more popular ones.</p>

<hr>

<p>Android phones have a few interesting manager apps for organizing chess tournaments:</p>

<ol>
<li><a href="https://play.google.com/store/apps/details?id=de.hintzeit.swiss&amp;hl=en" rel="nofollow noreferrer">Swiss System Tournament</a></li>
<li><a href="https://play.google.com/store/apps/details?id=com.dgnt.quickTournamentMaker&amp;feature=search_result#?t=W251bGwsMSwxLDEsImNvbS5kZ250LnF1aWNrVG91cm5hbWVudE1ha2VyIl0." rel="nofollow noreferrer">Quick Tournament Maker</a></li>
</ol>
 187: <p>This isn't an online solution but one program you could use is <a href="http://www.swissperfect.com/">swiss perfect</a>, which manages tournaments and allows various options.</p>
