Last updated 06/02/2012

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2012 City Championship Pairings and Results

Group A  Winner is Drew Streitmatter with a score of 4 wins out of 5 games.

Date Rd Result White vs ResultBlackResultWhitevsResultBlackResultWhitevsResultBlack
April 23rd 1      0 Suarez     1Naff    0Crum    1Streitmatter    0Dolson    1Taylor
April 30th 2    .5 Taylor    .5Naff  1fStreitmatter   0fDolson    1Suarez    0Crum
May 7th 3     1 Naff    0Crum   0fDolson   1fSuarez    0Streitmatter    1Taylor
May 14th 4     0 Naff     1Streitmatter   1fCrum     0fDolson   .5Taylor    .5Suarez
May 21st 5    0f Dolson    1fNaff   .5Taylor   .5Crum    0Suarez     1Streitmatter

NameScore
Bill Naff3.5 after 5
Tom Taylor3.5 after  5
Ron Suarez2.5 after 5
Drew Streitmatter4 after  5
Carl Dolson0 after 5 
Randy Crum1.5 after 5



2012 City Championship Pairings and Results

Group B winner is Andrew Fei with a score of 4 points out of 5
 

Date Rd Result White vs ResultBlackResultWhitevsResultBlackResultWhitevsResultBlack
April 23rd 1     .5 Fei     .5Leali    1Reddy    0Lonn    0Zimmerle     1McConaghie
April 30th 2     1 McConaghie     0Leali    0Lonn    1Zimmerle    1Fei    0Reddy
May 7th 3     1 Leali     0Reddy    0Zimmerle    1Fei    1Lonn    0McConaghie
May 14th 4     1 Leali     0Lonn    1Reddy     0Zimmerle   .5McConaghie   .5Fei
May 21st 5     1 Zimmerle     0Leali    1McConaghie    0Reddy    1Fei     0Lonn

NameScore
Mike Leali2.5 after 5
Peter McConaghie3.5 after 5
Andrew Fei4 after 5
Adam Lonn1 after 5
Wayne Zimmerle2 after 5
Chetan Reddy2 after 5



This year the average pairings of the two groups is extremely close. 1720 for Group A vs 1706 for Group B


Games are scheduled for the dates indicated and will be played at the Monday night at HyVee unless the players involved agree to other arrangements before that night. Games should be completed by June 4th unless an extended schedule is approved by the TD. Signed Score sheets indicating the winner should be turned in for possible publication and tournament records. PGN files will be accepted (encouraged) in place of the hand written score.

Additional detail on how the pairings were arrived at, tiebreaks and other rules are below.

Once again it's time for another Peoria Championship. The format is a little unusual, so lets explain how it all comes together.

12 qualifying players are divided into 2 sections of 6 players each. Each section plays a round robin and the section winners then meet in a match to determine the winner.

How Qualifiers are Selected.

The defending champion automatically qualifies. The top 2 local players from the GPO qualify. The top 2 places in a series of 3 club tournaments also qualify. There is also a spot for the top rated junior (K-12). The remaining field, and any vacated spots, is filled with At Large players selected by a GPCF committee based on playing strength and local participation.

Dividing Players into Groups A and B.

Our goal is to have two reasonably even groups based on average rating. We do this by first selecting players in order of their rating and assigning them to group A or Group B.

For the first two palyers, we arbitrarily assign the highest rated player to Group A and the other to group B. So Group A received the highest player in position 1 of the six selections.

If we continue to alternate group A and Group B (ABABABABABAB) in this way, then, for each of the six selection pairs, Group A will always get the higher rated player. To make it more fair and even out the ratings between the groups, we instead allow Group B to have the higher rated player in every other pair of selections (ABBAABBAABBA). This guarantees a more even and fair spread of players between the two groups.

Assigning Players Games and Colors.

Here we follow the FIDE recommendations. First we allign the players in each group into sequence by rating. Then we select a random sequence of the numbers 1 through 6 and assign those numbers to the players in order of rating. The assigned number becomes the player's number as we place them into the USCF 6 man round robin table. The randomizing gives each player an equal chance for any selection, removing any built in bias the USCF table may have for color, opponent or round of play.

Playoffs.

If there is a tie between two players for a group, the two players will play another game, this time with colors reversed from their original encounter. If three players tie, the two lower rated players play a play in game with reversed colors and the winner then faces the highest rated player of the 3, again with colors reversed. If there are 4 tied, play in games are 1v4 and 2v3 with winners meeting, again all games are with colors reversed. If there are 5 ties, players 4 & 5 play in to the 4 player field and the winner plays 1. If there is a draw in the first playoff game, another game is played, again reversing colors. If that too is drawn, 2 more games are played at G30+5 and another 2 possible games at G5+3. If ties remain thereafter, a coin flip or other random selection is made with both players present. The G30 & G5 games will all be played in a single meeting.

The Finals Match.

The winners of the two groups meet in a final match. It takes at least 2 points and a lead in score to win the match. Possible scores are 2-0, 2-1, 2.5-.5, 2.5-1.5. If the score is tied at 2-2, we again go to a possible 2 games at G30+5 and 2 games at G5+3, played in a single meeting. The higher rated player receives White in the first game, colors are alternated thereafter.

Ratings Used.

All ratings are the most current available, taken from the rated events, often more recent than the latest published rating.

Lets Do It.

Now we know the rules and procedures, lets apply then to this years title challengers. The below list is in order of rating. The A or B to the left of the name is the preliminary group they will play in.

A Bill Naff 2000
B Mike Leali 1885
B Pete McConaghie 1851
A Fr Tom Taylor 1819
A Ron Suarez 1717
B Andrew Fei 1706
B Adam Lonn 1694
A Drew Streitmatter 1651
A Carl Dolson 1631
B Wayne Zimmerle 1582
B Chetan Reddy 1520
A Randy Crum 1500

SO we have By Group:

A Bill Naff 2000
A Fr Tom Taylor 1819
A Ron Suarez 1717
A Drew Streitmatter 1651
A Carl Dolson 1631
A Randy Crum 1500

B Mike Leali 1885
B Pete McConaghie 1851
B Andrew Fei 1706
B Adam Lonn 1694
B Wayne Zimmerle 1582
B Chetan Reddy 1520

Generate Random Pairings.

Using the Internet site random.org sequence generator, we get:

Random Sequence Generator
Here is your sequence:
623415
Timestamp: 2012-03-31 03:59:06 UTC

Sorry, the last step is not repeatable (or our random generator is not random at all).

Putting It Together.

Group A
6 Bill Naff 2000
2 Fr Tom Taylor 1819
3 Ron Suarez 1717
4 Drew Streitmatter 1651
1 Carl Dolson 1631
5 Randy Crum 1500

Group B
6 Mike Leali 1885
2 Pete McConaghie 1851
3 Andrew Fei 1706
4 Adam Lonn 1694
1 Wayne Zimmerle 1582
5 Chetan Reddy 1520

Merging with the Pairing Table.


We need to merge that with the 6 Player Round Robin Pairing Table from the top of page 295 in the 5th edition of the USCF Official Rules of Chess, and then add some dates.

Date Round Pairings
Apr 23 1 3-6 5-4 1-2
Apr 30 2 2-6 4-1 3-5
May 7 3 6-5 1-3 4-2
May 14 4 6-4 5-1 2-3
May 21 5 1-6 2-5 3-4

And finally with names substituted for numbers:


Group A
Date Round Pairings
Apr 23 1 Suarez-Naff Crum-Streitmatter Dolson-Taylor
Apr 30 2 Taylor-Naff Streitmatter-Dolson Suarez-Crum
May 7 3 Naff-Crum Dolson-Suarez Streitmatter-Taylor
May 14 4 Naff-Streitmatter Crum-Dolson Taylor-Suarez
May 21 5 Dolson-Naff Taylor-Crum Suarez-Streitmatter


Group B
Date Round Pairings
Apr 23 1 Fei-Leali Reddy-Lonn Zimmerle-McConaghie
Apr 30 2 McConaghie-Leali Lonn-Zimmerle Fei-Reddy
May 7 3 Leali-Reddy Zimmerle-Fei Lonn-McConaghie
May 14 4 Leali-Lonn Reddy-Zimmerle McConaghie-Fei
May 21 5 Zimmerle-Leali McConaghie-Reddy Fei-Lonn