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MatPlus.Net Forum Liga Problemista 2009 (You are invited to make your) Award for 4th round!
 
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(1) Posted by Administrator [Monday, Nov 16, 2009 16:22]

(You are invited to make your) Award for 4th round!


The 4th round of Liga Problemista is now closed for online submissions. 26 entries have been received so far, but some, sent by a snailmail, may arrive in next few days. As in the previous round, members are invited to take part in judging this tourney - use the "LP 2009, Round 4" link below the main menu to access the entries.

Problems are listed anonymously and each is for your conveniance associated with the randomly chosen pseudonym from Greek mythology (just heroes and other mortals, no gods).

Note that for the valid award you should rank at least 12 entries (but please rank few more) and that it should be completed by December 10th 2009 (just in time to be printed in the Winter issue of Mat Plus planned for the end of December). You are also welcome to submit your comments on each problem which to your opinion deserves it.

Composers who took part in the tourney are welcome to also take part as judges. However, they should not rank their own works. A total score for compositions by judges will be increased by the average of points from all other awards.
 
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(2) Posted by Frank Richter [Monday, Nov 16, 2009 20:03]

Dear Milan,

many thanks for your work.
But - where is the link "below the main menu"? Or am I blind?
 
 
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(3) Posted by Administrator [Tuesday, Nov 17, 2009 00:02]

Sorry, 1000 times sorry, I'm getting senile! I usually firt enable it only for myself, just to check if it's OK. Then I enable it for all others - but this time I forgot to do it.
 
   
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(4) Posted by Administrator [Friday, Dec 11, 2009 20:01]

The preliminary results of the 4th round have been calculated, as well as the overall table for 2009. The compete award will be available in PDF format shortly, for the moment you can see tables and all received comments for all entries here:
http://www.milanvel.net/pub/lp2009.html

Claims, if any, should be sent as soon as possible!
 
   
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(5) Posted by Administrator [Saturday, Dec 12, 2009 16:05]

The award (draft):
http://www.milanvel.net/pub/MP_lp2009.pdf (245 KB)

EDIT: the corrected document has been uploaded (Dec 13th, 15:00)
 
   
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(6) Posted by Jacques Rotenberg [Saturday, Dec 12, 2009 17:58]; edited by Jacques Rotenberg [09-12-12]

How is done the calculus of the points ?
 
   
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(7) Posted by Siegfried Hornecker [Saturday, Dec 12, 2009 19:28]

When studying the award http://www.milanvel.net/pub/lp09_04.html it became obvious to me (and with mathematical work, exact numbers can be figured out).

When a judge ranked a problem as X, it received Y points, with X and Y being:

X 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12
Y 25, 20, 16, 13, 11, 10, 9, 8, 7, 6, 5, 4
 
   
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(8) Posted by Administrator [Sunday, Dec 13, 2009 02:27]

Everything has already been explained elsewhere:

Points for each individual award are distributed according to paragraph 3 of the RULES of Liga Problemista.

The calculation method is explained in the last section of Instructions on Judging.

The judge does not rank his own problems, but rather gets the average from all other awards.
 
 
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(9) Posted by Administrator [Sunday, Dec 13, 2009 15:47]

One diagram (12th place) was wrong, the document has been corrected (the same link as in the post #5)
 
 
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(10) Posted by Administrator [Tuesday, Jan 5, 2010 02:19]

There was an error in the award of the 1st round the Errata of which was planned to be published in the Winter issue, but it was not taken in account when the final table was calculated. The 4th place is a joint problem by Emanuel Navon and Yoel Aloni and, according to the rules of LP, the points for this duet should have been calculated separately from the points for Emanuel Navon alone. The final table have been updated with this correction:
http://www.milanvel.net/pub/MP_lp2009.pdf (302 KB)
 
 
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MatPlus.Net Forum Liga Problemista 2009 (You are invited to make your) Award for 4th round!