| Formal division | Open division | |
|---|---|---|
| format | 8-round Swiss | 4-round Swiss |
| board size | 9×9 | 13×13 |
| rules | Chinese | Chinese |
| komi | 7½ | 7½ |
| time | 13 minutes absolute | 28 minutes absolute |
The first round started at 17:00 UCT for the Formal and 17:10 for the Open division.
As usual, the tournament was held in two divisions, Formal and Open, with more restrictive entry conditions for the Formal division.
Formal Division 9×9
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Open Division 13×13
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The "real" names of the bots listed above, and of their programmers, are listed here: programs which have registered for KGS Computer Go Tournaments.
Fudo9 and Fudo13 are versions of a program by Hideki Kato, which has previously competed as 'ggmcbot'.
The event was remarkable for the number of unjustified resignations.
From now on, when I include diagrams in my reports, I will add headings and captions to them. The headings follow the usual convention, that the white player is named first.
In round 1, Fudo9 and break both arrived late for their game, but were able to play normally.
MoGoBot1 was doing rather badly in its game against Fudo9. For move 27, it made a pointless move on the one-line; Fudo9 passed (believing, reasonably, that it could win anyway); and MoGoBot1 resigned.
In round 2, break played the worst Go I have ever seen, against MoGoBot1. Its first, and only, move was on a one-one point. Thereafter it passed, until MoGoBot1 was convinced that further moves were unnecessary, and also passed. Now the players disagreed about the status of the solitary white stone, so play resumed. Break continued to pass, while MoGoBot1 strengthened its position (while making no attempt to capture the white stone). Then, for break's move 24, it consumed its remaining ten minutes, and timed out. This was to be MoGoBot1's only win in the event.
In its round 3 game with LeelaBot, MoGoBot1 passed for its move 7, getting a very poor position as a result. After move 16, it resigned, in a lost potition.
In round 4 MoGoBot1 resigned to botnoid after move 4. Admitttedly it was in a poor position already.
In round 5 MoGoBot1 arrived late for its game against Fudo9, played poorly, and resigned, in a lost position, after move 22.
LeelaBot obtained a strong position against break, and then passed whenever it was sure that a pass was good enough to win the game. It eventually won by half a point, after 160 moves.
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| MonteGNU vs. break |
| The position after move 97. |
In round 7 MoGoBot1 resigned against break after move 6.
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| Fudo9 vs. botnoid | MoGoBot1 vs. MonteGNU |
| The position after move 160. Black passed, and White resigned. | The position after move 3. White resigned. |
Fudo9 was White and botnoid was Black in the first position shown. Fudo9 had over seven minutes left, botnoid had 20 seconds. Botnoid, understandably, passed; and Fudo9 resigned.
In the second position shown, MoGoBot1 resigned for its second move, in a perfectly good position.
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| SimpleBot vs. scottbot |
| The position after move 80. Black passed, and White passed. |
In round 1, Fudo13 did not at first appear for its game with Idiotbot, as its operator Hideki Kato was having a problem installing the Java virtual machine on its platform. When it eventually appeared, it had only eight minutes left of its initial allocation of 28 minutes. It appeared to be unaware of this, and started playing rather slowly. When its time dropped below 90 seconds it speeded up, and it speeded up again when it dropped below 50 seconds. But it had not left itself enough time for the pointless territory-filling that it likes to do, and eventually lost on time in a won position.
In the game shown to the left, both players passed in this unfinished position. By some
criteria, this would be a win for Black, scottbot. However scottbot had a problem, and kept
disconnecting (or crashing) and reconnecting. I assume that the players had disagreed
about the result, but scottbot had not implemented the clean-up phase correctly. I had to
decide how to assign a result to this game. I decided that, as the players were only
failing to finish the game becasue of a failure by scottbot, and SimpleBot had done
nothing wrong, I should assign the win to SimpleBot, just as I would have done if scottbot
had crashed during the game.
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| SimpleBot vs. GNU |
| White has played the marked stone. |
After round 2, I noted that all the seven entrants were present, so I removed IdiotBot from the draw to avoid byes, as previously agreed with its owner Aloril.
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| WeakBot50k vs. scottbot |
| White has just played move 82. |
This allowed WeakBot50k to finish the tournament in second place, with three wins from four games – a very good result for WeakBot50k, and a reminder that making legal moves within the time limit without resigning can be a powerful startegy.