| format | 18-round Swiss |
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| board size | 9×9 |
| rules | Chinese |
| komi | 7½ |
| time | 4 minutes plus 25/20s |
The first round started at 16:00 UTC.
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The numbers in these tables do not add up as you | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PNUGo is a build of GNU Go, entered by Petr Baudiš.
CzechBot is a build of MoGo, also entered by Petr Baudiš.
Aloril entered his usual collection of weaker bots, and allowed me to remove IdiotBot if it would make the numbers even.
All 13 registered players were present at the start of the tournament. However I chose not to remove IdiotBot to make the numbers even and avoid byes, until I had evidence that they were all capable of joining their games and making moves in them.
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| kiseki vs SimpleBot |
| At the end of the game. |
So in round 1, there was a bye, which happened to be assigned to break9. All the
other players showed that they were able to play; so I removed IdiotBot from the draw for
subsequent rounds.
When the game between kiseki and SimpleBot SGF
stopped with two passes, in the position shown to the right, all the dame had been filled, the
status of all the groups was clear, and kiseki had a won position. However kiseki does not know
how to handle the clean-up phase (it had therefore captured all Black's dead groups during the
game). Therefore the server treated it as claiming the dead white stones as alive, and the game
was resumed. If kiseki had passed throughout the resumption phase, it would certainly have won;
but whenever it had some stones captured, it played back into the space, more slowly than it
could afford, and lost on time.
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| AyaMC vs pachi |
| Black's move 43. |
The round 7 game between AyaMC and pachi SGF was a good one. It ended in the position shown to the left, when AyaMC accepted that all its upper-edge stones were dead, and resigned.
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| Zen9 vs Fuego |
| Moves 32 and 33 |
Zen9 apeared (to me) to be winning its round 9 game with Fuego SGF, when it made move 32 as shown in the diagram to the right. This achieves nothing (unless Black answers it wrong). When Black answered sensibly at 33, Zen9 resigned. Black has a push at f7 followed by a cut at g8, which will secure a win.
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| SimpleBot vs break9 |
| At the end of the game. |
Also in round 9, SimpleBot and break9 SGF both passed in the position shown to the left, agreed that all the stones on the board were alive, and allowed it to be counted as it is, giving the win to White by 18½ points. In fact the white group in the upper left is dead, and if the players had recognised this it would have been counted as a win to break9 by 3½ points.
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| gomorra9 vs pachi |
| At the end of the game. |
In round 12, gomorra9 and pachi SGF both passed in the position shown to the right. White's upper left group is dead, and it believed, with good reason, that it had lost the game. When gomorra believes that the game is hopeless, it passes, three times. It is less clear to me why pachi passed. Pachi accidentally had its clean-up mode switched off, and gomorra9 continued to pass in the clean-up phase, so the position was counted as is, with all stones alive. Black is one point ahead on the board (the "territory" is indicated by letters b and w), so with komi of 7½, gomorra9 won by 6½.
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| gomorra9 vs pachi |
| At the end of the game. |
In round 15, gomorra9 and pachi SGF were again playing, with the colours unchanged. Again, they both passed well before the game was over, in the position shown to the left. This time, they disagreed about the status of at least one group, so there was a resumption, in which they both passed again. The game was counted as a win to Black; I don't know how it was counted this way, but Black did deserve to win the game.
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| break9 vs Fuego |
| At the end of the game. |
Also in round 15, break9 and Fuego SGF both passed in the position shown to the right. They disagreed about the status of at least one group, so there was a resumption, in which Black played at a, White played at b, and then both passed leaving dead groups of both colours on the board. The game was now scored as a win for Black.
I note that five of the seven diagrams above show where something went wrong at the end of the game, causing it to be scored wrongly, or risking causing it to be scored wrongly. I encourage people entering these events to submit programs which support the game-end clean-up correctly.
The tournament was watched by "chid0ri", the creator of the Empty Triangle series of on-line Go cartoons. She drew a cartoon about computer Go, no. 54 in the series, and currently the one at the Empty Triangle.