Peoria City Championship Details and Pairings updated 03/09/2014

(Actual pairings are at the bottom of the page.)


Andrew Voss has had to drop out of the tournament as his workload has changed leaving him out of town on the majority of tournament nights. First alternate Adam Lonn has agreed to take his place. Because we still have a few weeks before the start of the tournament and Adam is rated almost 200 points below Andy we have decided to repair the players to keep the two sections relatively even in rating. The following is updated for this change.


Once again it's time for another Peoria Championship. This year's group is a little stronger as a whole than last year. Last year our qualifiers average rating was 1664. This year the average is 1709, 45 points stronger. But as always, this year the average pairings of the two groups is extremely close. 1711 for Group A vs 1706 for Group B. Last year the groups differed by 10 points and group B was stronger; this year Group A is stronger and the difference is only 3 points.


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 May 1st 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. Please indicate if you would not like your games annotated for the GPCF web site.


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


The format is a little unusual, so let us 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 4 club tournaments also qualify. There is also a spot for the top rated junior (K-12), if no other junior qualifies. 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.

Assigning Players to 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 players, we arbitrarily assign the highest rated player to Group A and the second 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 to randomly assign the positions within the table to avoid any unwanted bias.

- First we align 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.



If there is a tie between the top 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, letís 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.


 1. Andrew Fei -Defending Champion

 2. Carl Dolson - Open Section of the Greater Peoria Open

 3. Randy Crum - Reserve Section of the Greater Peoria Open

 4. Wayne Zimmerle - Mid Summer Knights Dream

 5. Daniel Garrett - Fall into Chess

 6. Mike Leali - Winter Qualifier

 7. Ron Suarez - Winter Qualifier

 8. Albert Li - Last Chance Qualifier

 9. Patrick Li - Last Chance Qualifer

10. Bill Naff - Highest USCF rated that is available to play

11. Peter McConaghie - Chosen by committee for various deserving reasons.

12. Adam Lonn - Chosen by committee for various deserving reasons.

(If any cannot play their schedule, Drew Streitmatter is the alternate)

Players by rating and Group:

A 10031231: WILLIAM A NAFF         2000


B 12534271: MICHAEL LEALI          1881

B 14064411: ANDREW YUEYANG FEI     1848


A 12658967: PETER MC CONAGHIE      1837

A 12483626: RONALD J SUAREZ        1713



B 11315844: R WAYNE ZIMMERLE       1645


A 14548850: PATRICK Y LI           1642

A 14265598: ADAM LONN                  1628


B 14316800: ALBERT YILIANG LI      1619

B 10356091: RANDY M CRUM           1552


A 12404073: CARL L DOLSON          1446


So, we have By Group:


Group A

WILLIAM A NAFF         2000


RONALD J SUAREZ        1713

PATRICK Y LI           1642

ADAM LONN                   1628        

CARL L DOLSON          1446



Group B

MICHAEL LEALI          1881




YILIANG LI             1619

RANDY M CRUM           1552


Generate Random Pairings.


Using the Internet site sequence generator, we get:


Here is your s