| format | 7-round Swiss | |
|---|---|---|
| board size | 19×19 | |
| rules | Chinese | |
| komi | 7½ | |
| time | 29 minutes plus 10/30s |
The first round started at 16:00 UTC.
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In the table above, | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
The organiser and players were pleased to see Rémi Coulom enter his program Crazy Stone for this event. Crazy Stone had not played in a KGS event since April 2010, but was known to be one of the strongest players, similar in strength to the impressively strong Zen.
The first day of a month is an unfortunate date for these events. Three months ago, on April 1st, KGS's celebration of April Fool's Day make things difficult for me, as I described in my April report. On July 1st, or rather, between the end of June 30th and the start of July 1st, UTC, there was a leap-second, which confused many unix systems around the world. One such system was the KGS server, which started to suffer from serious lag. At the time, the TCGA 19x19 Computer Go Tournament was taking place, and the lag caused all its games from then on to be lost on time, or by forfeit.
As it happened, this was convenient for me. On the evening of June 30th, I was aware of a problem with the scheduling of this tournament. The TCGA Tournament should have been over before this July KGS tournament was scheduled to start. However, the KGS scheduler, instead of scheduling four games each round to the eight players, was scheduling three games and two byes; and as it was a round robin, this was going to make it overrun, and end at least an hour after the KGS July tournament was due to start, with many of the same players. When I went to bed on the night of June 30th, I did not know how to resolve this clash. But when I woke up on the morning of July 1st, I found that the TCGA tournament was over, with all the games of its final 28 rounds ending as time losses or by forfeit. While this was most unfortunate for the TCGA organisers and players, it resolved my problem.
When the KGS July tournament started, the cause of the lag on KGS was still unknown, and there were fears that it might recur. In fact, wms' action in rebooting the server had fixed the lag, but as its cause was still not known, some were worried that it might recur.
Once we realised that the lag had been due to the leap-second, we realised that it would not recur. In fact, as pasky suggested, it could have been fixed without a server reboot, by the unix command
date -s "`date`"or
date -s $(date).
I have nothing to say about the play in this event. Most of the players are much stronger than me, and I noticed no poor moves.
Orego12 was missing when round 1 started, and arrived 11 minutes late for its game with pachi, which it lost.
After round 3, CrazyStone and Zen19S were tied for first place, with three wins each. In round 4 they played each other, and CrazyStone won by the minimal margin of 1½ points. Remarkably, this was the only game in the whole tournament not won by resignation.
In round 7 Zen19S and CrazyStone played again. This time Zen won.
Players receive points for the 2012 Annual KGS Bot Championship as follows:
| Crazy Stone | 7 |
| Zen | 6 |
| pachi | 3 |
| Aya | 1½ |
| Many Faces of Go | 1½ |