| format | 18-round Swiss | |
|---|---|---|
| board size | 9×9 | |
| rules | Chinese | |
| komi | 7 | |
| time | 9 minutes plus 10/30s |
The first round started at 16:00 UTC.
|
| |
|
In the table above, In the "SOS" and "SoDOS" columns, where a cell contains two numbers, the number in the larger font is calculated correctly, and the number in the smaller font is calculated by the KGS software and appears on the KGS results page. | |
Eight players registered for the tournament.
|
|
|---|
| stv vs CrazyStone |
| Move 45 |
In round 3, the only two undefeated players, stv and CrazyStone, played each other. Stv played the first half of the game faster than CrazyStone: at move 25, stv had used two minutes while CrazyStone had used four. I realised when I saw CrazyStone's move 45 (shown to the right) that it had no hope of winning. This move is sente, but if answered in the obvious way, makes Black's position worse in all respects. MC bots make such moves only when their position is hopeless.
In round 4 stv beat ManyFaces1 in a difficult game with many kos.
|
|---|
| AyaMC vs stv |
| Final move |
In round 5 stv lost its first game, to AyaMC, by resigning (as Black) in the position shown to the left. This resignation is, I believe, correct. Black must connect, and White is then able to play at a9, starting a ko. White will need to play the first ko threat, and can do so at h4. Black then has no ko threat and so will lose the ko.
|
|---|
| AyaMC vs ManyFaces1 |
| After consecutive passes |
In round 7, ManyFaces1 (Black) and AyaMC both passed in the position shown to the right, and then disputed the status of the "bent four in the corner" position in the top left. With good play this is alive for White, as White has a ko threat at g7 and Black has no ko threat. If it had been played out correctly the result would have been jigo. But AyaMC failed to save these stones, and lost the game.
In round 8 there was a jigo between CrazyStone and stv. In the other three games between these players, stv beat CrazyStone, the winner of the tournament. However third-placed Fuego9 won all its three games against stv, and lost all its three games against CrazyStone.
|
|---|
| pachi vs ManyFaces1 |
| After consecutive passes |
In round 10, ManyFaces1 (Black) and then pachi passed in the position shown to the left. They disputed the status of the stone at b1, so play resumed, with White's final pass being undone. White passed again. So there had again been two consecutive passes, the clean-up phase was over, and the stone on b1 was scored as alive. In fact White would have won anyway, with correct scoring. But my impression is that the KGS software mis-handled the clean-up phase, both the passes should have been undone.
|
|---|
| ManyFaces1 vs Fuego9 |
| After consecutive passes |
In round 11, Fuego (Black) and then ManyFaces1 passed in the position shown to the right. They then disagreed about the staus of the large white group in the top left, and entered the clean-up phase. In this, White passed throughout, while Black captured and connected the ko at a1 and then made some meaningless moves. So the game was scored with the large white group, and the three black stones in the bottom right, alive. The result was a win for Black, as it would have been with correct play.
|
|---|
| stv vs Orego12 |
|
Moves 22-34 22 is at 33 26 is at 31 30 is at 33 |
In round 15, stv successfully executed a two-stone edge squeeze against Orego12, as shown to the left. I don't know if this impresses strong players. It impresses me because this squeeze is at the limit of my reading ability, even though I have trained myself to recognise opportunities for it.
Players receive points for the 2012 Annual KGS Bot Championship as follows:
| Crazy Stone | 8 |
| Steenvreter | 5 |
| Fuego | 3 |
| coldmilk | 2 |
| Aya | 1 |