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Topic: 2009 Postal Mixer (Read 6126 times) |
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omar
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Arimaa player #2
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Re: 2009 Postal Mixer
« Reply #45 on: Apr 17th, 2009, 4:29pm » |
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on Apr 17th, 2009, 7:56am, Janzert wrote:| Would it be possible to get the View games linked up to the actual games like it was last year? This was quite handy for me to track what opfor was actually doing in its games last year. |
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I'll check it out.
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Janzert
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Arimaa player #247
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Re: 2009 Postal Mixer
« Reply #46 on: Apr 17th, 2009, 7:12pm » |
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Thanks Omar. Not sure if it's related but I also noticed that the Postal Games link from a player's page shows the games but not the turn number or who's turn it is, I'm don't know if that is the way it has always been though.
Janzert
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RonWeasley
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Harry's friend (Arimaa player #441)
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Re: 2009 Postal Mixer
« Reply #47 on: Apr 20th, 2009, 9:19am » |
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It's always hard to keep track of so many games. One thing I notice about the first several moves: When I make a move, I think I'm winning. When I look at my opponent's response, I think I'm losing. Makes me afraid to open games. Maybe I should move without looking (as I do whenever I play Fritzlein).
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jdb
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Re: 2009 Postal Mixer
« Reply #48 on: Apr 20th, 2009, 12:00pm » |
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on Apr 20th, 2009, 9:19am, RonWeasley wrote:| It's always hard to keep track of so many games. One thing I notice about the first several moves: When I make a move, I think I'm winning. When I look at my opponent's response, I think I'm losing. Makes me afraid to open games. Maybe I should move without looking (as I do whenever I play Fritzlein). |
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Easy fix, just make sure you're the last one to move in the game.
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mistre
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Re: 2009 Postal Mixer
« Reply #49 on: May 7th, 2009, 10:48am » |
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Games have finished already. Blue22, who performed poorly last year considering his ranking, is off to a fast start at 3-0.
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RonWeasley
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Re: 2009 Postal Mixer
« Reply #50 on: May 20th, 2009, 5:04am » |
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Opfor hasn't moved in 5 days. Did it go on vacation?
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Janzert
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Arimaa player #247
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Re: 2009 Postal Mixer
« Reply #51 on: May 20th, 2009, 8:03am » |
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Oops, looks like it decided to take an unscheduled leave. I've sat it back down now and gave it a stern talking to. Hopefully it'll stick with it now.
Janzert
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arimaa_master
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Arimaa player #2010
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Re: 2009 Postal Mixer
« Reply #52 on: May 21st, 2009, 12:21am » |
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on May 20th, 2009, 8:03am, Janzert wrote:Oops, looks like it decided to take an unscheduled leave. I've sat it back down now and gave it a stern talking to. Hopefully it'll stick with it now.
Janzert |
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LOL
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Fritzlein
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Arimaa player #706
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Re: 2009 Postal Mixer
« Reply #53 on: May 31st, 2009, 11:01am » |
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Some stats on openings:
| Elephant File | 2005 | 2006 | 2007 | 2008 | 2009 | | d | 98.1% | 79.5% | 85.3% | 89.9% | 90.0% | | c | | 13.7% | 9.4% | 9.5% | 10.0% | | b | 1.9% | 6.3% | 5.3% | | | | a | | 0.5% | | 0.6% | | | Rabbits Forward | 2005 | 2006 | 2007 | 2008 | | none | 14.4% | 22.6% | 10.0% | 6.0% | 2.1% | | a | 2.5% | 15.3% | 4.1% | 0.6% | 5.0% | | c | 3.1% | | | | | | ac | | | | 0.6% | | | af | | | | | 0.7% | | ah | 55.6% | 56.3% | 76.5% | 59.5% | 57.1% | | cf | 23.1% | | | 8.3% | 1.4% | | ag | | 0.5% | 1.2% | | | | ach | | | | | 1.4% | | adh | | 2.6% | 4.1% | 10.1% | 10.0% | | abgh | 0.6% | | | | | | acfh | 0.6% | | | 14.9% | 22.1% | | adeh | | 2.6% | 4.1% | | | | Setup Balance | 2005 | 2006 | 2007 | 2008 | 2009 | | Symmetrical | 56.9% | 50.5% | 54.1% | 50.0% | 35.7% | | Balanced | 22.5% | 30.0% | 34.1% | 42.3% | 42.9% | | Unbalanced | 20.6% | 19.5% | 11.8% | 7.7% | 20.7% | | Gold Move 2w | 2005 | 2006 | 2007 | 2008 | 2009 | | E up 4 | 68.8% | 26.3% | 25.9% | 13.1% | 20.0% | | E up 3 over 1 | 11.3% | 11.6% | 1.2% | 3.6% | 14.3% | | E up 3; X up 1 | 6.3% | 41.1% | 40.0% | 45.2% | 45.7% | | E up 2; X,Y up 1 | 3.8% | 10.5% | 23.5% | 27.4% | 17.1% | | E, X, Y, Z up 1 | 3.8% | 3.2% | | 1.2% | | | Other | 6.3% | 7.4% | 9.4% | 9.5% | 2.8% |
All of us except blue22 centralized the elephant in the setup. Fritz rabbits gained popularity at the expense of no rabbits forward and rabbits only behind the traps, but two rabbits forward on the flanks retained a majority. Unbalanced setups gained sharply at the expense of symmetrical setups, while balanced setups held steady in the middle. Elephant forward four steps for Gold's first move made a comeback, but Elephant up three and some other piece up one retained a plurality.
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Fritzlein
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Re: 2009 Postal Mixer
« Reply #54 on: May 31st, 2009, 11:05am » |
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on May 7th, 2009, 10:48am, mistre wrote:| Games have finished already. Blue22, who performed poorly last year considering his ranking, is off to a fast start at 3-0. |
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Make that a 7-1 start. Bravo blue22!
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Fritzlein
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Re: 2009 Postal Mixer
« Reply #55 on: Jul 3rd, 2009, 8:44am » |
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Heads up to spectators: ChrisB and blue22 have played a wild and entertaining game, which has miraculously traded down to an endgame with even material. Check it out while the fun is still ongoing!
Half the games are now finished. All players except Simon have finished at least one game, but no player has finished all games.
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| « Last Edit: Jul 3rd, 2009, 9:00am by Fritzlein » |
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Fritzlein
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Re: 2009 Postal Mixer
« Reply #56 on: Jul 23rd, 2009, 3:38pm » |
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Unless Simon times out, he will finish demolishing OpFor for an impressive victory. Well done, Simon!
This will give OpFor a 3-7 record for the tournament and a performance rating of 1798. That persuades me that OpFor's performance in 2008 was a statistical outlier.
Here is the performance of bots in postals so far:
Bot Year Record Postal Performance
--- ---- ------ ------------------
Bomb 2005 4-6 1716
Zombie 2007 1-14 1409
Sharp 2008 1-8 1568
OpFor 2008 8-9 2060
OpFor 2009 3-7 1798
If we take human performance as the benchmark, and say that a bot's "true" strength is how strong it is at the Arimaa Challenge time control of two moves per minute, then I guess the rating adjustment based on slower/faster time controls should be approximately:
Speed Bot Strength
----- ----------
Postal -100
Challenge 0
Fast . +100
Blitz . +150
Probably if humans and bots used equal thinking time in postal games, then the advantage to humans would be even greater than 100 rating points, but bots apparently make up some of the gap by thinking longer per move than their human opponents.
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Fritzlein
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Re: 2009 Postal Mixer
« Reply #57 on: Aug 16th, 2009, 7:47am » |
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The game ChrisB vs. blue22 has finally ended on the eighty-first move. This incredibly dramatic game should be reviewed by anyone who doesn't think Arimaa is exciting. It had more back-and-forth than a swingset. Congratulations to both players on a hard-fought, creative, take-no-prisoners, to-the-death battle.
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ChrisB
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Re: 2009 Postal Mixer
« Reply #58 on: Aug 16th, 2009, 11:37am » |
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Thanks, Fritzlein. It certainly was an exciting and interesting game for me!
I found it interesting that a large number of blue22's moves were very different from those I thought he might make. Given the amount of tactical interplay, I would have thought that it would be easier to predict the lines of play.
Congratulations blue22 on the impressive win!
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Fritzlein
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Re: 2009 Postal Mixer
« Reply #59 on: Aug 18th, 2009, 9:25am » |
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Now that chessandgo has finished thrashing me, I recall the historical trend: In 2005, 2007, and 2008 (i.e. every year except 2006) the Arimaa World Champion went on to be undefeated in the Postal Mixer. Are we witnessing history repeat itself?
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