Hundred and sixteenth KGS Computer Go Tournament

Sunday October 4th, 2015

These results also appear on an official KGS page.


format20-round Swiss
board size9×9
time9 minutes plus 10/30s


The first round started at 16:00 UTC.

Result table

Crazy abaku fuego CGI9 MCark NiceG Orego AyaMC
B03R W17R B112R W119R W15R J8 W114R B117R B11R J9 B110R W116R B12R W113R B120R W1488 B115T W111R B118R B16T 18214173½Winner
2abakus W13R B07R W012R B019R
B11R W110R B013R B14R W18R B114R W16R B111R W118R W1588 B117T W120R B12R W115R W19T B116T 16204½137½
3fuego9 B05R J8 B014R W017R W01R B010R W113R
W03R J15 W118R W19R B119R W12T B112R W11626 W16R B17R W14T B111T W120T 13204½77
4CGI9 W01R J9 W010R B016R W04R B08R W014R B13R J15 B018R
B17R W112R B117R W1688 B111T B15R W120R B12T W113T B119T 1220963½
5MCark W02R B013R W020R B06R W011R B018R B09R W019R W07R B012R W017R
W11R B18T J3 B14R W114R B116R W15T B110T W115T 199½30½
6NiceGo19N B0488 W015T B0588 W017T B020R B02T W012R B01626 B0688 W011T B01R W08T
W19R B110R W013R B119R W13T B17T W114T B118T 718616½
7Orego32 B011R W018R W02R B015R B06R W07R W05R B020R J3 W04R B014R W016R B09R W010R B113R W019R
W11T B18T W112T B117T 1807
8AyaMC W06T B09T W016T B04T W011T B020T W02T B013T W019T B05T W010T B015T B03T W07T B014T W018T B01T W08T B012T W017T
0200½0A bug made it disconnect repeatedly

Black won 38 games, White won 38, and there were 4 jigoes.


Eight players registered. We welcomed a new player to these events, CGI, playing as CGI9. "CGI Go Intelligence" is a Taiwanese program, with multiple developers, and ancestors in Amigo and HappyGo: See its history.


I had expected that, with the entrants being much stronger than me, particularly at 9×9 Go, I would have little to say about the games. In fact, in round 1, all four games gave me something to write about.

fuego9 vs abakus
After the last move of the game.
abakus vs CrazyStone
Move 58.

In its round 3 game with CrazyStone, abakus started a ko fight with the move shown to the left. Both players fought the ko competently, and abakus eventually won the game.

In round 12 abakus lost its first game, to CrazyStone.

In round 13 abakus lost its second game, to fuego9.

fuego9 vs NiceGo19N
After consecutive passes.

In round 16 fuego9 and NiceGo19N both passed in the position shown to the right, and agreed to mark the dead stones as shown, leading to a win for fuego9. My guess is that NiceGo19N passed because it knew it had lost (but has forgotten how to resign, as mentioned above), while fuego9 understood that passing in the position shown would give it a win. My congratulations to both, for achieving a correct result without a slow cleanup!

CrazyStone vs abakus
Move 39.

In round 19, abakus played the move shown to the left, against CrazyStone. This seems to me to achieve nothing, its only merit is that it keeps sente. But I suspect that Black has no way to win, so this move is as good as any.

Annual points

Players receive points for the 2015 Annual KGS Bot Championship as follows:

Crazy Stone8

Details of processor numbers, power, etc.

abakus, running on 5 nodes each with two Intel Xeon E5-2670, 2.6GHz and 64 GByte main memory (80 cores total).
Aya, MC version, running on an i7 980X 3.3GHz, 6 cores.
CGI Go Intelligence running on "8 x 3 x AMD Opteron 6174/2.2 GHz (ALPS system by Acer)", each one has 36 cores, total 288 cores.
Crazy Stone, running on Amazon ec2 c4.8xlarge server instance (xeon, 18 cores, 36 threads, 2.9GHz).
Fuego, running on 12x Intel(R) Xeon(R) CPU X5670 @ 2.93GHz.
MC_ark, running on a Xeon E5-2450 2.10GHz 8-core HT on*2cpu + GPU(G200eR2).
oakfoam, running on an i7-4790K / GTX-970.
Orego, running on an instance in the Google Compute Engine cloud (type n1-highcpu-32, which has "32 virtual CPUs and 28.8 GB of memory".) The machine runs Centos 7.