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2015 CYCC Pairing Manipulation
Pairings in the first round are important and can play a crucial part especially in Swiss Tournaments where instead of play off's mathematical tie breakers are applied. Computers are used, since especially in later rounds logic becomes more complicated and chances of human errors are increased.
The pairing logic of the very first round of Swiss Tournament is simple:
a) players are sorted as per their ratings and ranked top rated 1st, next best 2nd and so on
b) If there are odd number of players the lowest ranked player gets a bye
c) The remaining even number of players or if one started with even number of players are grouped into two equal half's.
d) Top player in first half is paired to play top player from second half, second player from top half is paired against second player from second half and so on. example: if there are 16 players parings would be 1-9, 2-10,3-11, 4-12, 5-13 .... 8-16.
e) Depending on the coin toss it could be either 1B-9W, 2W-10B ....etc OR 1W-9B, 2B-10W etc
The actual pairing in the U10 Girls section in CYCC 2015 were not altered and were as follows:
However in quite a few sections the pairings were altered, one of the sections in which pairing was manipulated was the U14 Girls section.
Without alteration the pairings in the U14 Girls would have been as follows using the standard SwissSys settings (you can try this yourself as well by using Chessresults starting ranks and SwissSys), Please take note of board 3 and board 4:
This is the actual pairing:
In order to achieve this pairing, two forced pairings must be used, there is simply no other way to achieve this without the use of forced pairings:
These are the forced pairing settings:
As you can see using these forced pairing settings the same results as in the actual pairings have been achieved:
This manipulation was done by someone with access to the pairing software/computer, is deliberate plus though not highly, quite sophisticated in nature. It takes quite a bit of ingenuity to confine changes to two boards and not cause ripple effect changes to many boards especially to those that follow.
People usually have high trust for anything that is generated from a computer, hence those that know how to manipulate the output have a better chance of getting away with their manipulation.
In past CYCC's I have looked at, forced pairings have not been used in the first round. Why were the forced pairings used in certain sections? Who entered these forced pairings?
It is highly disturbing that the pairings have been manipulated in such a manner. There are also numerous other rounds and sections where it is clear that pairings have been manipulated through the use of forced pairings. This is only one example.
After this finding the integrity of the 2015 CYCC is now in question until proven otherwise.
The pairing logic of the very first round of Swiss Tournament is simple:
a) players are sorted as per their ratings and ranked top rated 1st, next best 2nd and so on
b) If there are odd number of players the lowest ranked player gets a bye
c) The remaining even number of players or if one started with even number of players are grouped into two equal half's.
d) Top player in first half is paired to play top player from second half, second player from top half is paired against second player from second half and so on. example: if there are 16 players parings would be 1-9, 2-10,3-11, 4-12, 5-13 .... 8-16.
e) Depending on the coin toss it could be either 1B-9W, 2W-10B ....etc OR 1W-9B, 2B-10W etc
The actual pairing in the U10 Girls section in CYCC 2015 were not altered and were as follows:
However in quite a few sections the pairings were altered, one of the sections in which pairing was manipulated was the U14 Girls section.
Without alteration the pairings in the U14 Girls would have been as follows using the standard SwissSys settings (you can try this yourself as well by using Chessresults starting ranks and SwissSys), Please take note of board 3 and board 4:
This is the actual pairing:
In order to achieve this pairing, two forced pairings must be used, there is simply no other way to achieve this without the use of forced pairings:
These are the forced pairing settings:
As you can see using these forced pairing settings the same results as in the actual pairings have been achieved:
This manipulation was done by someone with access to the pairing software/computer, is deliberate plus though not highly, quite sophisticated in nature. It takes quite a bit of ingenuity to confine changes to two boards and not cause ripple effect changes to many boards especially to those that follow.
People usually have high trust for anything that is generated from a computer, hence those that know how to manipulate the output have a better chance of getting away with their manipulation.
In past CYCC's I have looked at, forced pairings have not been used in the first round. Why were the forced pairings used in certain sections? Who entered these forced pairings?
It is highly disturbing that the pairings have been manipulated in such a manner. There are also numerous other rounds and sections where it is clear that pairings have been manipulated through the use of forced pairings. This is only one example.
After this finding the integrity of the 2015 CYCC is now in question until proven otherwise.
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