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Topic: 2011 Postal Mixer (Read 16511 times) |
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rbarreira
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Arimaa player #1621
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Re: 2011 Postal Mixer
« Reply #75 on: Jul 9th, 2011, 8:10am » |
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on Jul 9th, 2011, 7:45am, Fritzlein wrote:| also briareus is thinking for longer per move than any bot has before. |
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I believe Clueless was also thinking for 4 hours last year, Opfor was thinking between 2 to 4 hours (probably depending on how well the game is going?).
But the real thinking time is relative to the hardware being used of course.
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Hippo
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Re: 2011 Postal Mixer
« Reply #76 on: Jul 15th, 2011, 3:13am » |
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on Jul 8th, 2011, 1:06pm, Hippo wrote:
So now is Briareus 7-1, who would guess such start.
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It seems to me briareus is that good in endings that 10:8 record or even better would not surprise me now.
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Hippo
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Re: 2011 Postal Mixer
« Reply #77 on: Jul 15th, 2011, 8:55am » |
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And seems to me first time in this postal mixer the bot had no job (for several minutes).
... not at all ... toby1kenobi played just in time not to let bot relax.
OK  now it could relax
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| « Last Edit: Jul 15th, 2011, 4:40pm by Hippo » |
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mistre
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Re: 2011 Postal Mixer
« Reply #78 on: Jul 17th, 2011, 10:02pm » |
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Briareus is now 9-2! Furthermore, only 1 of its remaining 7 games looks like a sure loss, the rest are very much in doubt.
So best possible would be 15-3 and at worst 9-9.
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Hippo
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Re: 2011 Postal Mixer
« Reply #79 on: Jul 18th, 2011, 1:05am » |
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I don't think 15:3 is doable, at least 3 games look really grim for the bot, but as I have said it's very good at the ending ... .
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Fritzlein
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Re: 2011 Postal Mixer
« Reply #80 on: Jul 19th, 2011, 8:24am » |
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on Jul 9th, 2011, 7:56am, robinz wrote:I must make a mental note to check out your game in a few weeks' time  |
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Heh, thanks for the warning against overconfidence. Especially after the way Omar (and now blue22) lost a won position, I am not sending in any "obvious" moves on short contemplation.
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Swynndla
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Arimaa player #1821
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Re: 2011 Postal Mixer
« Reply #81 on: Jul 21st, 2011, 1:03am » |
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on Jul 9th, 2011, 8:10am, rbarreira wrote:
I believe Clueless was also thinking for 4 hours last year, Opfor was thinking between 2 to 4 hours (probably depending on how well the game is going?).
But the real thinking time is relative to the hardware being used of course. |
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So typically how many 4-step plies is briareus looking ahead on this hardware (with & without extensions)?
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Hippo
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Re: 2011 Postal Mixer
« Reply #82 on: Jul 21st, 2011, 1:21am » |
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on Jul 21st, 2011, 1:03am, Swynndla wrote:
So typically how many 4-step plies is briareus looking ahead on this hardware (with & without extensions)? |
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I expect it is higher in the endings .
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rbarreira
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Re: 2011 Postal Mixer
« Reply #83 on: Jul 21st, 2011, 3:54am » |
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on Jul 21st, 2011, 1:03am, Swynndla wrote:
So typically how many 4-step plies is briareus looking ahead on this hardware (with & without extensions)? |
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During the first few moves, it partly searched 5-6 plies (partly meaning the the 5 or 6 ply search was not complete).
From there on through the middlegame, it usually partly searched 4 plies, rarely managing to start the 5 ply search and change its mind at that depth.
At more endgame-ish positions (goal attacks going on), the partially and completely finished 5 ply searches were much more common than in the middlegame. But there weren't any real endgames with very few pieces yet, it would search much deeper on those.
On top of that depth there's quiescence (searching captures only) and search extensions for goal threats (which means goals were seen for 2 further plies than the searched depth, so most goals in 3 should be defended and it might happen to find a goal in 4 for the bot, though the latter never actually happened so far in the postal mixer).
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| « Last Edit: Jul 21st, 2011, 3:58am by rbarreira » |
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Swynndla
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Re: 2011 Postal Mixer
« Reply #84 on: Jul 21st, 2011, 6:18am » |
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That's some interesting stuff.
I'm wondering if we have enough data to plot rating vs ply depth searched (although different types of extensions make it all the more difficult). For example, if your bot ran on faster hardware and was able to search two more plies, what sort of rating would we expect it to have? Another way of asking the question is what sort of hardware would be needed to search far enough to win the arimaa challenge, and would this hardware be under $1000 by 2020? I'm expecting the answer to be no it wouldn't be under $1000 by 2020 and so we need to work on making better bots, but I'm just wondering that's all. (I hope this isn't too far off topic on this thread ... I'll stop now).
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Hippo
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Re: 2011 Postal Mixer
« Reply #86 on: Jul 24th, 2011, 7:24am » |
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on Jul 24th, 2011, 4:22am, UruramTururam wrote:| Uff, I'm done. 4-1 (3-1 in "real" games). |
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Congrats. Seems the return to the game advice paid off.
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Fritzlein
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Re: 2011 Postal Mixer
« Reply #87 on: Jul 24th, 2011, 10:41am » |
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on Jul 24th, 2011, 7:24am, Hippo wrote:| Congrats. Seems the return to the game advice paid off. |
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Hmmm, I just failed to follow this advice in my game versus you. I got tired of thinking, but rather than coming back later I just hit send. I hope it doesn't come back to haunt me. 
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Hippo
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Re: 2011 Postal Mixer
« Reply #88 on: Jul 27th, 2011, 11:04am » |
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on Jul 24th, 2011, 10:41am, Fritzlein wrote:
Hmmm, I just failed to follow this advice in my game versus you. I got tired of thinking, but rather than coming back later I just hit send. I hope it doesn't come back to haunt me. |
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Your move actually scared me so I expect that is not that bad ... but I wanted to announce new pastal mixer leader:
Nombril with perfect record 6:0 (so far) skipped the only bot which gained a lot of points from quantity.
Will anybody remain undefeated this year? Last year there were 3 such players (if I remember it well).
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