Under 2400: 100
Under 2200: 100
Under 2000: 75*
Under 1800: 50*
These two prizes have no bearing on the distribution. The winners scored less then 4 points.
Grandmaster A and B tied for 1st with 5-1
Grandmaster C and IM A (rated under 2400) tied for 3rd & 4th 4.5 -1.5
GM D, IM B, NM A (under 2400) & Expert A (under 2200) all scored 4-2
There is a disagreement between how Swiss-Sys distributed the prizes and how the tournament committee chair felt the prizes should have been distributed.
Swiss-Sys did as follows:
Grandmaster A and B 1st-2nd $300 each.
Grandmaster C and IM A (rated under 2400)3rd - 4th $125 each
GM D, IM B, NM A (under 2400) $75 each Expert A (under 2200) $100
The chairman felt GM D & IM B should get 62.50 and NM A should get $100 for under 2400. It appears Swiss-Sys used the Under 2400 prize as part of the tie for 3rd-4th since 4th place and under 2400 were equal, and took 4th place and combined it with 5th & 6th.
The chairman was right, the program was wrong. You ought to send Thad Suits a bug report. This is explicitly covered in 32B3. When combiningg and dividing place and class prizes, you must perform two calculations: 1) combine all the prizes and divide them equally, and 2) give the class players the class prize(s) they alone are eligible for. The class players get the larger of the two.
32B4. Priority of identical prizes. A player who is eligible for both a place prize and a class prize of an identical amount shall receive the place prize.
Paragua and Bonin should each get $125, but they are tied for 3rd ($150) and 4th ($100), not 3rd ($150) and Under 2400 ($100, which would then go to someone with less points).
Lenderman and Lapshun should each get $62.50 (5th-6th). Parker Zhou and Margulis (assuming he’s Under 2200) should each get $100 (Under 2400-Under 2200). This might be a bug in SwisSys 7, and perhaps not in 8, but it’s also possible that the exact prize parameters in the “prizes” function were not correctly input into SwisSys at the start.
Ed was right all along, but this is a good example of why, in a tournament of several different prizes, it would be good not to have class prizes and place prizes, or different class prizes, with identical amounts.
In addition to the .6sc file, you would also need the same prize file used at the tournament to see if the bug is in SwisSys; the .prz file you created to do the test might not be identical to the one originally used, and the prize parameters might not have been set exactly the same.
I used exactly what was listed in Chess Life. Maybe I’m wrong to assume the TD put everything in exactly the same way I did, but I’m not sure of any other way he possibly would have done it it. I selected 6 place prizes, and put in the 6 prizes listed in the TLA. With the class prizes I used the ranges 2399-0, 2199-0, 1999-0, 1799-0 and put in the amounts specified in the TLA. I can double check with the TD and see if he set it up this way also.
There still could have been a typo or miskey somewhere in the original file (or the second one), which might not be obvious. Also the class prizes should have floors of 100, as unrateds are not eligible (unless otherwise advertised).
Congrats on the title of this thread! When I first saw it, I didn’t look closely, and thought it was that other thread. I was then surprised and delighted to see a new topic.
Or, it’s possible the software used the following (incorrect) logic: 1st-2nd to GM A and GM B. 3rd-4th to GM C and IM A. (So far so good.) Now, NM A hasn’t earned the U2400 prize, because he’s not the top-finishing U2400. So just throw that prize into the pool (5th-6th-U2400-U2200). Expert A, by contrast, IS the top-finishing U2200, so he gets that whole prize, leaving the other 3 prizes to be divided equally among the other 3 players scoring 4-2.
Uh, shouldn’t that be 2399-1, 2199-1, 1999-1, 1799-1? Unrateds are not supposed to be eligible for class prizes. (Has nothing to do with the original problem, though.)
I realized after I posted this that I had set the lower end range wrong since unrateds are not eligible. Fortunately there were no unrated players in the tournament, but point taken.
When I first saw it, I didn’t look closely, and thought it was that other thread. I was then surprised and delighted to see a new topic.