Autumn 2014 Slow KGS Computer Go Tournament

Sunday September 14th-17th, 2014

These results also appear on an official KGS page.

Rules

format	8-round Swiss
board size	19×19
rules	Chinese
komi	7½
time	235 minutes plus 10/60s

Times

The first round started at 22:00 UTC.

Statistical oddity

After three rounds, I noticed that Black had seven wins, White had one. I assumed it was just random, but decided to check again later. I checked again after round 7, and found that now Black had eight wins and White had twelve.

Result table

Place	Name	cross-table	Wins	SOS	SoDOS	Notes
Zen19	DolBa	AyaMC	HiraB	NiceG	Orego
1	Zen19S	X	^B1²_R ^W1⁶_R	^B1³_R ^W1⁷_R	^W1⁵_R ^B1⁸_R	^W1¹_R	^W1⁴_R	8	30	30	Winner
2	DolBaram	^W0²_R ^B0⁶_R	X	^B1¹_R	^W1⁴_R	^W1⁵_R ^B1⁷_R	^B1³_R ^W1⁸_R	6	28	12
3	AyaMC	^W0³_R ^B0⁷_R	^W0¹_R	X	^B1²_R ^W1⁶_R	^W1⁴_T ^B1⁸_R	^W1⁵_R	5	32	10
4	HiraBot	^B0⁵_R ^W0⁸_R	^B0⁴_R	^W0²_R ^B0⁶_R	X	^B1³_R	^B1¹_R ^W1⁷_R	3	34	2
5	NiceGo19N	^B0¹_R	^B0⁵_R ^W0⁷_R	^B0⁴_T ^W0⁸_R	^W0³_R	X	^B1²_R ^W1⁶_R	2	33	0
6	Orego12	^B0⁴_R	^W0³_R ^B0⁸_R	^B0⁵_R	^W0¹_R ^B0⁷_R	^W0²_R ^B0⁶_R	X	0	35	0

Place

Name

cross-table

Wins

SOS

SoDOS

Notes

Zen19

DolBa

AyaMC

HiraB

NiceG

Orego

Zen19S

^B1²_R ^W1⁶_R

^B1³_R ^W1⁷_R

^W1⁵_R ^B1⁸_R

^W1¹_R

^W1⁴_R

Winner

DolBaram

^W0²_R ^B0⁶_R

^B1¹_R

^W1⁴_R

^W1⁵_R ^B1⁷_R

^B1³_R ^W1⁸_R

AyaMC

^W0³_R ^B0⁷_R

^W0¹_R

^B1²_R ^W1⁶_R

^W1⁴_T ^B1⁸_R

^W1⁵_R

HiraBot

^B0⁵_R ^W0⁸_R

^B0⁴_R

^W0²_R ^B0⁶_R

^B1³_R

^B1¹_R ^W1⁷_R

NiceGo19N

^B0¹_R

^B0⁵_R ^W0⁷_R

^B0⁴_T ^W0⁸_R

^W0³_R

^B1²_R ^W1⁶_R

Orego12

^B0⁴_R

^W0³_R ^B0⁸_R

^B0⁵_R

^W0¹_R ^B0⁷_R

^W0²_R ^B0⁶_R

In the table above,
   0 is a loss
   1 is a win
   J is jigo
   left superscript is the player's colour
   right superscript is the round in which the game was played
   a subscript shows how the result was determined:
      R for resignation
      T for time
      F for forfeit
      a number for the points difference after counting.
All the 0s, 1s and Js are links to the game record.

Black won 11 games and White won 13.

Results

Six players registered.

The round 2 game between DolBaram and Zen19S was interesting, attracting over 100 observers. The consensus among them was that DolBaram had an early lead, but fell behind in the late midgame.


Zen19S vs DolBaram
Move 81

In round 6, Zen19S played DolBaram again. For this game there were at times over 120 kibitzers. Again the consensus was that DolBaram had an early lead, but lost this in the midgame. DolBaram's move 81, shown to the right, was criticised: Ootakamoku [4d]: "what a sad exchange", ppp: "e16 seems really awful". Indeed, it appears to me that move 81 throws away a liberty in sente; White loses a liberty and a potential eye, but Black's liberties are more important.

Statistical oddity

After round 3, I happened to notice that Black had won seven games, and White had won only one. I decided it was not significant, but it might be worth checking again later. After round 7 I checked again and found that Black had won eight and White twelve.

Annual points

Players receive points for the 2014 Annual KGS Bot Championship

Zen	8
DolBaram	5
Aya	3
HiraBot	2
oakfoam	1

Details of processor numbers, power, etc.

AyaMC: Aya, MC version, running on one machine: i3 540 3.07GHz 1 thread.
DolBaram: DolBaram, running on a dual Xeon-X5660 (total: 12core * 2.8GHz).
HiraBot: HiraBot running on an i7-3930k@3.2GHz, 6 cores, 12 threads
NiceGo19N: oakfoam, running on i7-4790K.
Orego12: Orego, running with 12 threads on one node of a custom Linux cluster. The node has two AMD Six Core Dual Opteron 2427 2.2 GHz processors (12 cores total), 8 GB RAM Centos Linux.
Zen19S: Rounds 1 and 2: Zen, running on a mini cluster of a dual 10-core Xeon E5-2690 v2@3 GHz 32 GB RAM, a dual 6-core Xeon X5680@3.6 GHz 24 GB RAM, a dual 6-core Xeon X5680@3.8 GHz 12 GB RAM, an 8-core i7 5960X@3.5 GHz 16 GB RAM computers, all connected via a GbE LAN; 50 cores total.
Round 3: as above but without the 8-core i7 5960X.
Round 4-7: the dual 10-core computer only.