Xtracon Open 2017
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Re: Xtracon Open 2017
Matthew Wadsworth on board 7 and Adam Taylor on board 11 also lost with black v GMs
Stephen Dishman had an eventful draw with Timman on board 15
Stephen Dishman had an eventful draw with Timman on board 15
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Re: Xtracon Open 2017
Round 9 and Jobava (7.5) not playing the only player on 7, which again is presumably the colour sequenceIM Jack Rudd wrote:Jobava colour sequence: WBWWBBW
Short colour sequence: WBWBWBW
Both have had four whites and three blacks, so we go back to the last round in which they had different colours, which is round 5. Jobava had black and Short white in that round, so Short is more due black than Jobava is.
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Re: Xtracon Open 2017
Jobava colour sequence: WBWWBBWW so he has to be black (can't have three of the same colour in a row)Mick Norris wrote:Round 9 and Jobava (7.5) not playing the only player on 7, which again is presumably the colour sequenceIM Jack Rudd wrote:Jobava colour sequence: WBWWBBW
Short colour sequence: WBWBWBW
Both have had four whites and three blacks, so we go back to the last round in which they had different colours, which is round 5. Jobava had black and Short white in that round, so Short is more due black than Jobava is.
Lyna Narayanan Sunilduth: WBWBWWBW so the problem I can see is giving him white would mean 6 whites out of 9.
"For each player the difference between the number of black and the number of white games shall not be greater than 2 or less than –2.
Each system may have exceptions to this rule in the last round of a tournament."
So they may be paired in the last round.
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Re: Xtracon Open 2017
Looks odd to me. I wonder whether this is the pairing Swiss Manager produces.Mick Norris wrote:IM Jack Rudd wrote:Round 9 and Jobava (7.5) not playing the only player on 7, which again is presumably the colour sequence
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Re: Xtracon Open 2017
Seemingly correct given the law quoted above though?NickFaulks wrote:Looks odd to me. I wonder whether this is the pairing Swiss Manager produces.Mick Norris wrote:IM Jack Rudd wrote:Round 9 and Jobava (7.5) not playing the only player on 7, which again is presumably the colour sequence
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Re: Xtracon Open 2017
Yes, agree it is correct given we are only in the penultimate round, but wouldn't have occured if the pairings had given Nigel white (i.e. Jobava as higher rated kept colour sequence, which was my intuitive reaction)LawrenceCooper wrote:Jobava colour sequence: WBWWBBWW so he has to be black (can't have three of the same colour in a row)Mick Norris wrote:Round 9 and Jobava (7.5) not playing the only player on 7, which again is presumably the colour sequenceIM Jack Rudd wrote:Jobava colour sequence: WBWWBBW
Short colour sequence: WBWBWBW
Both have had four whites and three blacks, so we go back to the last round in which they had different colours, which is round 5. Jobava had black and Short white in that round, so Short is more due black than Jobava is.
Lyna Narayanan Sunilduth: WBWBWWBW so the problem I can see is giving him white would mean 6 whites out of 9.
"For each player the difference between the number of black and the number of white games shall not be greater than 2 or less than –2.
Each system may have exceptions to this rule in the last round of a tournament."
So they may be paired in the last round.
Reminds me not to do the pairings for any event ever again
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Re: Xtracon Open 2017
"Higher rated keeps colour sequence" is very low priority, though. It goes below "player with stronger colour preference keeps colour sequence" and "player on higher score keeps colour sequence".
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Re: Xtracon Open 2017
The trouble with these "laws" is that you know you will sometimes have to break some, so they're really just an order of preference.LawrenceCooper wrote:Seemingly correct given the law quoted above though?
My impression is that you sort out the pairing groups first, and then you do your best with the colours. However, I am not an expert and have only recently tried to become an informed amateur.
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Re: Xtracon Open 2017
I doubt many would have queried the top two being paired and the white player would be unlikely to grumble at getting his sixth white in nine games. Were it his sixth black then he probably would though.NickFaulks wrote:The trouble with these "laws" is that you know you will sometimes have to break some, so they're really just an order of preference.LawrenceCooper wrote:Seemingly correct given the law quoted above though?
My impression is that you sort out the pairing groups first, and then you do your best with the colours. However, I am not an expert and have only recently tried to become an informed amateur.
My interpretation of the law (which I only become aware of today) is that were it the last round then the pairing would have occurred.
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Re: Xtracon Open 2017
I agree, but perhaps it should have anyway. This is when it is helpful for the arbiter to be able to invoke a computer pairing.LawrenceCooper wrote: My interpretation of the law (which I only become aware of today) is that were it the last round then the pairing would have occurred.
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Re: Xtracon Open 2017
Ignoring the rule that says they can't I agree that they should playNickFaulks wrote:I agree, but perhaps it should have anyway. This is when it is helpful for the arbiter to be able to invoke a computer pairing.LawrenceCooper wrote: My interpretation of the law (which I only become aware of today) is that were it the last round then the pairing would have occurred.
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Re: Xtracon Open 2017
You are conveniently ignoring the other rule which says that players are paired according to score groups. You can't obey both, and in my opinion score groups should take precedence.LawrenceCooper wrote:Ignoring the rule that says they can't I agree that they should play
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Re: Xtracon Open 2017
In all British pairing systems I have come across, they do.NickFaulks wrote:You are conveniently ignoring the other rule which says that players are paired according to score groups. You can't obey both, and in my opinion score groups should take precedence.LawrenceCooper wrote:Ignoring the rule that says they can't I agree that they should play
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Re: Xtracon Open 2017
Not conveniently ignoring because I don't agree with it but accepting that the law should be followed.NickFaulks wrote:You are conveniently ignoring the other rule which says that players are paired according to score groups. You can't obey both, and in my opinion score groups should take precedence.LawrenceCooper wrote:Ignoring the rule that says they can't I agree that they should play
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Re: Xtracon Open 2017
So you're happy to ignore the "law" about players first being separated into score groups.LawrenceCooper wrote:Not conveniently ignoring because I don't agree with it but accepting that the law should be followed.
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