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Dark Knight / Le Chevalier Noir
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Heads up for anyone interested in playing at the RACC Sunday Rapid on May 28, that the 2017 Ottawa Marathon will cause a lot of roads to be closed from 6am until 2pm. Details here:
16 players weaved their way through the closed roads from the Ottawa Marathon and sat indoors for 3 hours of a beautivule day to play rapid chess. Armando Valdizon won with 4.5./5 after letting the lucky TD slip through his fingers in the last round.
I will not be running a rapid tournament at the RACC next week, June 4. The Club will be open for pickup games, and maybe someone else will organize something.
Code:
# Name/Rtng/ID Rd 1 Rd 2 Rd 3 Rd 4 Rd 5
1 Armando Valdizon
2247 101864 (2239) (2603110) W 7 B 6 W 5 W 3 B 2
1.0 2.0 3.0 4.0 4.5
2 John Upper
2135 101925 (2102) (2606437) bye bye W 12 B 6 W 1
0.5 1.0 2.0 3.0 3.5
3 Ben Kellar
1955 148170 (2143) (2620928) B 8 W 4 B 7 B 1 W 9
0.0 1.0 2.0 2.0 3.0
4 Ray Kuryliw
1935 105482 (1868) (2604833) W 9 B 3 B 10 W 8 W 6
0.5 0.5 1.5 2.5 3.5
5 Peter Arseneau
1909 101203 (1794) (2609959) B 10 W 8 B 1 ---- ----
1.0 2.0 2.0 U2.0 U2.0
6 Kamal Balazadeh
1825 153228 (1710) W 11 W 1 B 8 W 2 B 4
1.0 1.0 2.0 2.0 2.0
7 Vahid Falahi
1800 B 1 B 9 W 3 W 13 B 12
0.0 1.0 1.0 2.0 3.0
8 Gordon Ritchie
1724 110972 (1823) (2608529) W 3 B 5 W 6 B 4 W 10
1.0 1.0 1.0 1.0 1.0
9 Ehsan Forouz
1480 158124 (1535) B 4 W 7 B 11 W 10 B 3
0.5 0.5 1.5 2.5 2.5
10 Vincent Qin
1035 161708 (1099) W 5 B 11 W 4 B 9 B 8
0.0 1.0 1.0 1.0 2.0
11 Michael Shi
unr. B 6 W 10 W 9 B 12 B 13
0.0 0.0 0.0 0.0 0.0
12 Licheng Zhou
unr. 160270 (1214) bye ---- B 2 W 11 W 7
0.5 U0.5 0.5 1.5 1.5
13 Chika Nnagbo
unr. 160822 (1400) bye ---- ---- B 7 W 11
0.5 U0.5 U0.5 0.5 1.5
Armando Valdezon was first with 4. Tied for second were William Doubleday and Ray Kuriliew with 3.5. Peter Arsenault scored 3, Kamal Farazandeh had 2. There were two juniors players (Michael 2.5 and Vincent 1).
I experimented with the Kaiser pairing system as implemented by Sevilla 17.1.1.
It was easier than pairing by hand, but overall, not a success.
Kaiser
The basic idea of Kaiser (discussed in previous posts) is to guarantee competitive pairings in every round in cases where standard Swiss pairings would not, and it attempts to do this by combining player ranking with game results to produce a weighted value for each win and draw.
Sevilla Pro and Con
I've been using chess pairing software for only about 10 years, so it is possible that I made some mistakes using Sevilla. That caveat in play, here are a few thoughts:
Sevilla is freeware
Sevilla's window does not scale up for a modern resolution laptop and seems to have been designed for 640x480, so its print is teeny tiny.
Sevilla has more output options than SwissSys
Sevilla does not read the CFC database, so ratings etc have to be input by hand
Sevilla is simpler than SwissSys when trying to change pairings by hand.
Some of the "Kaiser" pairings seemed clearly right (e.g. in round 1, #1 played #2, #3 played #4 etc)
Some of the "Kaiser" pairings seemed clearly wrong (e.g. it gave a bye to player #2 in round 3, after he had won in round 1 (over #1) and lost in round 2 (to #3). This seems wrong because a) he didn't have the lowest (standard) score, b) he had played the toughest opponents, and so his 50% score should be worth more than the 50% score of other players who had played lower-ranked opponents.
The pairings were unpopular with several players, who did not want to get paired against the same opponents (I had Sevilla set to maximally pair any two opponents twice, but Sevilla might do this double pairing twice for a single player)
Some players came in late, and that might have fooled the program into making strange pairings, I don't know.
Because players objected to the pairings I changed the last round pairings by hand to avoid repairings.
This at least partially explains the ludicrous final-round pairings and the standings below.
The the first table is a standard Swiss style X-table. The table below shows the weighted scores....
Code:
RACC Sunday Rapid 2017.06.11 - RA Centre - Group 1
Game file after Round 5 - 2017-06-11.
Pos Name 1 2 3 4 5
1 John Upper 7b1 3w1 2b0 9w1 11b1
2 Peter Arseneau bye 8b1 1w1 6b1 4w0
3 Paul Beckwith 4w1 1b0 bye 4b1 9w1
4 Maher Saleh 3b0 10w1 9b1 3w0 2b1
5 Licheng Zhou abs0 abs0 10b1 8w1 6w1
6 Daniel Xu 10b1 7w½ 8b1 2w0 5b0
7 Ray Kuryliw 1w0 6b½ 11w1 10b1
8 Gordon Ritchie 9b1 2w0 6w0 5b0 bye
9 Kamal Balazadeh 8w0 11b1 4w0 1b0 bye 3b0
10 Vahid Fallahi 6w0 4b0 5w0 11b1 7w0
11 Chika Nnagbo bye 9w0 7b0 10w0 1w0
RACC Sunday Rapid 2017.06.11 - RA Centre - Group 1
Ranking after Round 5 - 2017-06-11 - Normal ranking.
Pos Name Gms W D L Score Val PVal B S Rtg TPR IRtg
1 John Upper 5 4 0 1 474.0 100.0 99.0 -1 -1 2104 2055 2100
2 Peter Arseneau 4 3 0 1 454.7 99.0 100.0 0 1 1931 2123 1909
3 Paul Beckwith 4 3 0 1 449.3 98.0 98.0 0 1 2163 2248 2150
4 Maher Saleh 5 3 0 2 381.0 97.0 96.0 -1 -1 2183 2002 2200
5 Licheng Zhou 3 3 0 0 375.0 96.0 95.0 1 2 1355 2516 1300
6 Daniel Xu 5 2 1 2 326.5 95.0 97.0 -1 -1 1704 1717 1700
7 Ray Kuryliw 4 2 1 1 322.5 94.0 93.0 0 -1 1924 1806 1930
8 Gordon Ritchie 4 1 0 3 247.3 93.0 92.0 0 -1 1704 1469 1728
9 Kamal Balazadeh 5 1 0 4 246.7 92.0 94.0 -1 -2 1717 1665 1730
10 Vahid Fallahi 5 1 0 4 181.0 91.0 91.0 1 1 1687 1455 1720
11 Chika Nnagbo 4 0 0 4 150.0 90.0 90.0 2 2 1345 1070 1350
NOTE: I will not be running a Rapid event next Sunday, and the Sunday after that there will be NO RAPID due to an EOCA event at the RA Centre
Last edited by John Upper; Sunday, 11th June, 2017, 11:50 PM.
A modest turnout of 12 was spiced-up by the participation of three first-timers, including Walter Chan, who went 4/4 before flagging when up a piece for two pawns in round 5.
14 players spent a beautiful afternoon looking for threats on chessboards. Armando Valdizon did it best, scoring 5/5.
Halldor Palsson will run the RACC Sunday rapid next weekend, and there will be NO RAPID August 13, as every player in the Ottawa valley will be playing in the Smiths Falls Open, or keeping their heads hung in shame.
14 players spent a beautiful afternoon looking for threats on chessboards. Armando Valdizon did it best, scoring 5/5.
Halldor Palsson will run the RACC Sunday rapid next weekend, and there will be NO RAPID August 13, as every player in the Ottawa valley will be playing in the Smiths Falls Open, or keeping their heads hung in shame.
Matthew, Alwin and Oswin were all first-timers AFAIK, and Manni was there for just his second time.
FWIW, Alwin and Oswin didn't double forfeit in the last round, they played each other, but left without reporting their result.
I should remind players about that before the final round. :o
Matthew, Alwin and Oswin were all first-timers AFAIK, and Manni was there for just his second time.
FWIW, Alwin and Oswin didn't double forfeit in the last round, they played each other, but left without reporting their result.
I should remind players about that before the final round. :o
I just spoke to them. Oswin beat Alwin (if you care to rate the game anyway).
Last edited by Tom O'Donnell; Monday, 31st July, 2017, 02:59 PM.
"Tom is a well known racist, and like most of them he won't admit it, possibly even to himself." - Ed Seedhouse, October 4, 2020.
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