In game 3 (Zen as W vs. So 8p), I don't understand why Zen didn't simply extend at G8 (move 24). That would be an easy win if Zen lived a group at that corner.
Aja 2012/12/2 Hiroshi Yamashita <[email protected]> > Hi, > > Zen lost six games against pros in 9x9 on November 25. > Each three pros played two games, black and white. > I tried these six resignation positions by Aya 100k playouts. > > Game, Winrate for Aya > 1 0.45 34th move, W to play, vs ICHIRIKI Ryo 2p > 2 0.33 53rd move, B to play, vs OHASHI Hirofumi 5p > 3 0.14 34th move, W to play, vs SO Yokoku 8p > 4 0.37 27th move, B to play, vs ICHIRIKI Ryo 2p > 5 0.56 34th move, W to play, vs OHASHI Hirofumi 5p > 6 0.27 51st move, B to play, vs SO Yokoku 8p > > For Aya, game 1 and 5 are difficult. > Maybe we need to understand these losses with smaller playouts? > > > Official page(in Japanese) > Computer Go challenges pros in 9x9 part 2, fighting without gloves. > http://entcog.c.ooco.jp/**entcog/event/event20121125.**html<http://entcog.c.ooco.jp/entcog/event/event20121125.html> > sgf (player's info updated) > http://entcog.c.ooco.jp/**entcog/event/kifu_20121125.zip<http://entcog.c.ooco.jp/entcog/event/kifu_20121125.zip> > > Newspaper report. (in Japanese) > Pros won all games against computer in 9x9. > http://www.asahi.com/igo/**topics/TKY201211270576.html<http://www.asahi.com/igo/topics/TKY201211270576.html> > Following is abstract. > Computers strength is close to pros in 9x9. But pros made position > difficult intentionally, computer made mistakes and lost. > Zen almost won its first game, but W 18th, 20th were deep reading > moves, and saved the game. From this game result, pros guessed > "If we make one difficult space, computer might be rough on the > other side.". So Ohashi 5 pro made a few ko-ish shapes in his > first game, and he didn't start ko soon. Ohashi played two 9x9 > games against Zen this March. It was 1 win 1 loss. He said > "I have studied well and played thinking of Zen's behavior." > (He has written artilces about 9x9 Go in Japanese Go Journal.) > > Another report in Chinese, I can't read though. > http://news.sina.com.tw/**article/20121125/8393009.html<http://news.sina.com.tw/article/20121125/8393009.html> > > Regards, > Hiroshi Yamashita > > > ----- Original Message ----- From: "Hideki Kato" <[email protected]> > To: <[email protected]> > Sent: Monday, November 26, 2012 7:31 AM > Subject: Re: [Computer-go] Zen beat Ha,Yongil 5p with 4 stones (Re: TAAI > details?) > > > Thank you Hiroshi. >> >> The names of the players are swapped, sorry all. >> >> The games were: >> 1) Ichiriki 2p (B) vs Zen, >> 2) Ohashi 5p (W) vs Zen, >> 3) So 8p (B) vs Zen, >> 4) Ichiriki 2p (W) vs Zen, >> 5) Ohashi 5p (B) vs Zen, >> 6) So 8p (W) vs Zen. >> >> The time setting was: 20 min main time and 30 second for every move (no >> extra byo-yomi). Chinese rules and 7.0 komi were used. Zen's hardware was >> 4 pc cluster (12, 6, 6 and 6 cores) at 4 GHz, same as TAAI and Zen19D/S on >> KGS. >> >> Professinals used much longer time than Zen; more than 20 min in four >> games of six while Zen used 10 or 15 min for all games. Sometime they >> thought more than 5 min (upto 10) for a move, move 11 of the first game for >> example. On the first game, Zen would play J4 (hane) next at move 16 (cut) >> but actually played G3 and went into "Sekito-shibori (two stone edge >> squeeze)" course. Either showed about 80% winrate but Ichiriki 2p said J4 >> could lead a safer win for W. Actually Zen had sure chances to win; hard >> luck. >> >> Zen had chances to draw in some games in Black but selected much risky >> (actually losing) moves. I guess this caused by implementing draws by >> adding a third value, 0.5, to UCB. To play a draw move, all better looking >> moves (by prior) have to be refused, or proved worse than 0.5. This could >> take pretty long time in some positions. #Faking komi to 6.5 might help >> but a better solution possible? >> >> Hideki >> >> Hiroshi Yamashita: <**313F02D8CF2F41D6AD89D1A42486DD**59@x60>: >> >>> Hi, >>> >>> The game records can be downloaded from http://entcog.c.ooco.jp/** >>>>> entcog/event/kifu_20121125.lzh<http://entcog.c.ooco.jp/entcog/event/kifu_20121125.lzh>. >>>>> >>>> >>>> I can not read that format. Can someone please translate it into >>>> >>> >>> I changed it to zip. >>> http://www.yss-aya.com/**kifu20121125.zip<http://www.yss-aya.com/kifu20121125.zip> >>> >>> I was impressed So Yokoku 8p comment, >>> "Zen is apt to make a mistake when we make two places that may >>> become ko. It makes game complex. Actual playing ko makes game simple." >>> >>> Didn't it win the first game? >>>> >>> >>> Sgf's player color is wrong. Black is Ichiriki 2p in first game. >>> Zen lost all 6 games. >>> >>> Regards, >>> Hiroshi Yamashita >>> >>> ______________________________**_________________ >>> Computer-go mailing list >>> [email protected] >>> http://dvandva.org/cgi-bin/**mailman/listinfo/computer-go<http://dvandva.org/cgi-bin/mailman/listinfo/computer-go> >>> >> -- >> Hideki Kato <mailto:[email protected]**> >> ______________________________**_________________ >> Computer-go mailing list >> [email protected] >> http://dvandva.org/cgi-bin/**mailman/listinfo/computer-go<http://dvandva.org/cgi-bin/mailman/listinfo/computer-go> >> > ______________________________**_________________ > Computer-go mailing list > [email protected] > http://dvandva.org/cgi-bin/**mailman/listinfo/computer-go<http://dvandva.org/cgi-bin/mailman/listinfo/computer-go> >
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