Hundred and eleventh KGS Computer Go Tournament

Sunday April 5th, 2015

These results also appear on an official KGS page.

Rules

format	18-round Swiss
board size	13×13
rules	Chinese
komi	7½
time	9 minutes plus 10/30s

Times

The first round started at 08:00 UTC.

Result table

Place	Name	cross-table	Wins	SOS	SoDOS	Notes
Crazy	DolBa	AyaMC	Zen19	NiceG	pachi
1	CrazyStone	X	^B1³_R ^W1⁶_2½ ^B1¹⁰_T ^W1¹⁴_2½ ^B0¹⁸_R	^B1¹_R ^W1⁴_R ^B0¹²_R ^W1¹⁷_R	^B1⁷_T ^W0¹¹_R ^B1¹⁵_11½	^W1²_R ^B1⁹_R ^W1¹⁶_R	^B1⁵_R ^W1⁸_R ^B1¹³_R	15	149	121	Winner
2	DolBaram	^W0³_R ^B0⁶_2½ ^W0¹⁰_T ^B0¹⁴_2½ ^W1¹⁸_R	X	^W1⁵_R ^B0¹¹_T ^W1¹³_R ^B1¹⁶_R	^W1²_T ^B1⁹_T ^W0¹⁷_T	^B1⁴_R ^W1⁸_R ^B1¹²_R	^B1¹_R ^W1⁷_R ^B1¹⁵_R	12	164	88
3	AyaMC	^W0¹_R ^B0⁴_R ^W1¹²_R ^B0¹⁷_R	^B0⁵_R ^W1¹¹_T ^B0¹³_R ^W0¹⁶_R	X	^B1³_T ^W1⁸_T ^B0¹⁴_R ^W0¹⁸_R	^B0⁶_R ^W1⁷_R ^B0¹⁵_R	^W1²_R ^B1⁹_R ^W1¹⁰_R	8	173	64
4	Zen19X	^W0⁷_T ^B1¹¹_R ^W0¹⁵_11½	^B0²_T ^W0⁹_T ^B1¹⁷_T	^W0³_T ^B0⁸_T ^W1¹⁴_R ^B1¹⁸_R	X	^B1¹_R ^W0⁵_T ^B0¹⁰_T ^W1¹³_R	^W0⁴_T ^B0⁶_T ^W1¹²_R ^B1¹⁶_R	8	157	65
5	NiceGo19N	^B0²_R ^W0⁹_R ^B0¹⁶_R	^W0⁴_R ^B0⁸_R ^W0¹²_R	^W1⁶_R ^B0⁷_R ^W1¹⁵_R	^W0¹_R ^B1⁵_T ^W1¹⁰_T ^B0¹³_R	X	^W0³_R ^B0¹¹_R ^W1¹⁴_R ^B0¹⁷_R ^W1¹⁸_R	6	162	42
6	pachi	^W0⁵_R ^B0⁸_R ^W0¹³_R	^W0¹_R ^B0⁷_R ^W0¹⁵_R	^B0²_R ^W0⁹_R ^B0¹⁰_R	^B1⁴_T ^W1⁶_T ^B0¹²_R ^W0¹⁶_R	^B1³_R ^W1¹¹_R ^B0¹⁴_R ^W1¹⁷_R ^B0¹⁸_R	X	5	167	34

Place

Name

cross-table

Wins

SOS

SoDOS

Notes

Crazy

DolBa

AyaMC

Zen19

NiceG

pachi

CrazyStone

^B1³_R ^W1⁶_2½ ^B1¹⁰_T ^W1¹⁴_2½ ^B0¹⁸_R

^B1¹_R ^W1⁴_R ^B0¹²_R ^W1¹⁷_R

^B1⁷_T ^W0¹¹_R ^B1¹⁵_11½

^W1²_R ^B1⁹_R ^W1¹⁶_R

^B1⁵_R ^W1⁸_R ^B1¹³_R

149

121

Winner

DolBaram

^W0³_R ^B0⁶_2½ ^W0¹⁰_T ^B0¹⁴_2½ ^W1¹⁸_R

^W1⁵_R ^B0¹¹_T ^W1¹³_R ^B1¹⁶_R

^W1²_T ^B1⁹_T ^W0¹⁷_T

^B1⁴_R ^W1⁸_R ^B1¹²_R

^B1¹_R ^W1⁷_R ^B1¹⁵_R

164

AyaMC

^W0¹_R ^B0⁴_R ^W1¹²_R ^B0¹⁷_R

^B0⁵_R ^W1¹¹_T ^B0¹³_R ^W0¹⁶_R

^B1³_T ^W1⁸_T ^B0¹⁴_R ^W0¹⁸_R

^B0⁶_R ^W1⁷_R ^B0¹⁵_R

^W1²_R ^B1⁹_R ^W1¹⁰_R

173

Zen19X

^W0⁷_T ^B1¹¹_R ^W0¹⁵_11½

^B0²_T ^W0⁹_T ^B1¹⁷_T

^W0³_T ^B0⁸_T ^W1¹⁴_R ^B1¹⁸_R

^B1¹_R ^W0⁵_T ^B0¹⁰_T ^W1¹³_R

^W0⁴_T ^B0⁶_T ^W1¹²_R ^B1¹⁶_R

157

NiceGo19N

^B0²_R ^W0⁹_R ^B0¹⁶_R

^W0⁴_R ^B0⁸_R ^W0¹²_R

^W1⁶_R ^B0⁷_R ^W1¹⁵_R

^W0¹_R ^B1⁵_T ^W1¹⁰_T ^B0¹³_R

^W0³_R ^B0¹¹_R ^W1¹⁴_R ^B0¹⁷_R ^W1¹⁸_R

162

pachi

^W0⁵_R ^B0⁸_R ^W0¹³_R

^W0¹_R ^B0⁷_R ^W0¹⁵_R

^B0²_R ^W0⁹_R ^B0¹⁰_R

^B1⁴_T ^W1⁶_T ^B0¹²_R ^W0¹⁶_R

^B1³_R ^W1¹¹_R ^B0¹⁴_R ^W1¹⁷_R ^B0¹⁸_R

167

Excluding twelve games won on time, Black won 17 games and White won 25.

Most games won on time were the consequence of one player failing to respond, a few may have been caused by pressure on the losing player. I have excluded them all from the above statistic, rather than trying to assess each case.

Players

Six players entered. NiceGo19N was using an eight-layer Convolutional Neural Network, trained on 19×19 games.

Results

In round 2, Zen19X reached an endgame with DolBaram in which it was losing by ½ a point. It did not submit another move, and lost on time.

In round 3, Zen 19X made no move in its game with AyaMC, and lost on time. After it had lost, I "kicked" it from the server, in the hope of waking it up. It reconnected five minutes later as I had expected, but did not make any moves in its next and subsequent games, until round 11.

Also in round 3, Dolbaram and CrazyStone played an interesting messy game with many cross-cuts. CrazyStone won.

In round 11, Zen19X woke up, about two minutes after the start of its game with CrazyStone, and resumed making moves. It won this game. In the course of the tournament, it lost nine games on time. Because of its losses on time, it was only drawn against CrazySone three time: of these, it won one, lost one, and lost another on time.

Zen19X's operator and developer Hideki Kato has explained that it crashed with a bug while he was away. When he returned, he restarted it, running the stable version 10.4 instead of the experimental 10.4x.

Also in round 11, DolBaram stopped submitting moves towards the end of a close endgame with AyaMC, and lost on time. Its operator Lim Jaebum reported that it had sent a move, d9, but it seems that the move was not received by the server. This may have been because there is a heavy load on internet connections between Korea where DolBaram runs and the U.S. where the KGS server is on weekend evenings, with many Koreans and Japanese playing on-line games.

In round 17, Dolbaram stopped submitting moves early in its game with Zen19X, and lost on time.

Annual points

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

Crazy Stone	8
DolBaram	5
Aya	3
Zen	2
oakfoam	1

Details of processor numbers, power, etc.

AyaMC: Aya, MC version, running on an 980X 3.3GHz, 6 cores.
CrazyStone: Crazy Stone, running on Amazon ec2 c4.8xlarge server instance (xeon, 18 cores, 36 threads, 2.9GHz).
DolBaram: DolBaram, running on a dual Xeon-X5660, 12 cores at 2.8GHz.
NiceGo19N: oakfoam, running on an i7-4790K / GTX-970. Using eight-layer CNN trained with 19×19 games.
pachi: pachi, running on all threads of an AMD FX(tm)-8350 Eight-Core Processor, with 24GB RAM this time.
Zen19X: Zen, running on a dual 10-core Xeon E5-2690 v2@3 GHz 32 GB RAM.