Hundred and first KGS Computer Go Tournament

Sunday April 7th, 2014

These results also appear on an official KGS page.

Rules

format	21-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
Zen19	AyaMC	nomiB	mpfue	NiceG	gnugo
1	Zen19S	X	^W1³_R ^B1⁶_R ^W1¹⁰_R ^B1¹⁵_R ^W1¹⁷_R	^W1²_R ^B1⁹_R ^W1¹³_R ^B1¹⁶_R ^W1²¹_R	^B1¹_R ^W1⁷_R ^B1¹²_R ^W1¹⁸_R	^W1⁵_R ^B0⁸_R ^W1¹⁴_R ^B1²⁰_R	^W1⁴_34½ ^B1¹¹_15½ ^W1¹⁹_16½	20	196	188	Winner
2	AyaMC	^B0³_R ^W0⁶_R ^B0¹⁰_R ^W0¹⁵_R ^B0¹⁷_R	X	^W1¹_R ^B1⁷_R ^W0¹²_R ^B1¹⁸_R ^W0²⁰_R	^W1⁴_R ^B1¹¹_R ^W1¹⁹_R	^B1²_R ^W1⁹_R ^B1¹³_R ^W1¹⁶_R	^W1⁵_2½ ^B1⁸_1½ ^W1¹⁴_½ ^B1²¹_5½	14	218	96
3	nomiBot4	^B0²_R ^W0⁹_R ^B0¹³_R ^W0¹⁶_R ^B0²¹_R	^B0¹_R ^W0⁷_R ^B1¹²_R ^W0¹⁸_R ^B1²⁰_R	X	^W0⁵_R ^B1⁸_R ^W1¹⁴_R ^B1¹⁵_R	^W1⁴_R ^B1¹¹_R ^W1¹⁹_R	^B0³_33½ ^W1⁶_12½ ^B1¹⁰_7½ ^W1¹⁷_12½	11	234	82
4	mpfuego19	^W0¹_R ^B0⁷_R ^W0¹²_R ^B0¹⁸_R	^B0⁴_R ^W0¹¹_R ^B0¹⁹_R	^B1⁵_R ^W0⁸_R ^B0¹⁴_R ^W0¹⁵_R	X	^B1³_R ^W1⁶_R ^B0¹⁰_R ^W1¹⁷_R ^B0²¹_R	^W1²_8½ ^B1⁹_3½ ^W1¹³_4½ ^B1¹⁶_11½ ^W1²⁰_½	9	211	40
5	NiceGo19N	^B0⁵_R ^W1⁸_R ^B0¹⁴_R ^W0²⁰_R	^W0²_R ^B0⁹_R ^W0¹³_R ^B0¹⁶_R	^B0⁴_R ^W0¹¹_R ^B0¹⁹_R	^W0³_R ^B0⁶_R ^W1¹⁰_R ^B0¹⁷_R ^W1²¹_R	X	^W1¹_13½ ^B1⁷_9½ ^W1¹²_2½ ^B1¹⁵_11½ ^W1¹⁸_8½	8	219	43
6	gnugo3pt8	^B0⁴_34½ ^W0¹¹_15½ ^B0¹⁹_16½	^B0⁵_2½ ^W0⁸_1½ ^B0¹⁴_½ ^W0²¹_5½	^W1³_33½ ^B0⁶_12½ ^W0¹⁰_7½ ^B0¹⁷_12½	^B0²_8½ ^W0⁹_3½ ^B0¹³_4½ ^W0¹⁶_11½ ^B0²⁰_½	^B0¹_13½ ^W0⁷_9½ ^B0¹²_2½ ^W0¹⁵_11½ ^B0¹⁸_8½	X	1	245	11

Place

Name

cross-table

Wins

SOS

SoDOS

Notes

Zen19

AyaMC

nomiB

mpfue

NiceG

gnugo

Zen19S

^W1³_R ^B1⁶_R ^W1¹⁰_R ^B1¹⁵_R ^W1¹⁷_R

^W1²_R ^B1⁹_R ^W1¹³_R ^B1¹⁶_R ^W1²¹_R

^B1¹_R ^W1⁷_R ^B1¹²_R ^W1¹⁸_R

^W1⁵_R ^B0⁸_R ^W1¹⁴_R ^B1²⁰_R

^W1⁴_34½ ^B1¹¹_15½ ^W1¹⁹_16½

196

188

Winner

AyaMC

^B0³_R ^W0⁶_R ^B0¹⁰_R ^W0¹⁵_R ^B0¹⁷_R

^W1¹_R ^B1⁷_R ^W0¹²_R ^B1¹⁸_R ^W0²⁰_R

^W1⁴_R ^B1¹¹_R ^W1¹⁹_R

^B1²_R ^W1⁹_R ^B1¹³_R ^W1¹⁶_R

^W1⁵_2½ ^B1⁸_1½ ^W1¹⁴_½ ^B1²¹_5½

218

nomiBot4

^B0²_R ^W0⁹_R ^B0¹³_R ^W0¹⁶_R ^B0²¹_R

^B0¹_R ^W0⁷_R ^B1¹²_R ^W0¹⁸_R ^B1²⁰_R

^W0⁵_R ^B1⁸_R ^W1¹⁴_R ^B1¹⁵_R

^W1⁴_R ^B1¹¹_R ^W1¹⁹_R

^B0³_33½ ^W1⁶_12½ ^B1¹⁰_7½ ^W1¹⁷_12½

234

mpfuego19

^W0¹_R ^B0⁷_R ^W0¹²_R ^B0¹⁸_R

^B0⁴_R ^W0¹¹_R ^B0¹⁹_R

^B1⁵_R ^W0⁸_R ^B0¹⁴_R ^W0¹⁵_R

^B1³_R ^W1⁶_R ^B0¹⁰_R ^W1¹⁷_R ^B0²¹_R

^W1²_8½ ^B1⁹_3½ ^W1¹³_4½ ^B1¹⁶_11½ ^W1²⁰_½

211

NiceGo19N

^B0⁵_R ^W1⁸_R ^B0¹⁴_R ^W0²⁰_R

^W0²_R ^B0⁹_R ^W0¹³_R ^B0¹⁶_R

^B0⁴_R ^W0¹¹_R ^B0¹⁹_R

^W0³_R ^B0⁶_R ^W1¹⁰_R ^B0¹⁷_R ^W1²¹_R

^W1¹_13½ ^B1⁷_9½ ^W1¹²_2½ ^B1¹⁵_11½ ^W1¹⁸_8½

219

gnugo3pt8

^B0⁴_34½ ^W0¹¹_15½ ^B0¹⁹_16½

^B0⁵_2½ ^W0⁸_1½ ^B0¹⁴_½ ^W0²¹_5½

^W1³_33½ ^B0⁶_12½ ^W0¹⁰_7½ ^B0¹⁷_12½

^B0²_8½ ^W0⁹_3½ ^B0¹³_4½ ^W0¹⁶_11½ ^B0²⁰_½

^B0¹_13½ ^W0⁷_9½ ^B0¹²_2½ ^W0¹⁵_11½ ^B0¹⁸_8½

245

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 27 games and White won 36.

Five players registered.

To make the numbers even and avoid byes, I included GNU Go, running on a single processor.

Results

When round 1 started, nomiBot4 was having problems connecting to the internet. It was five minutes late in joining its game with AyaMC, which it then lost.


The game window when the game was over and scored

A message window from the KGS server, explaining the score.

In round 3, nomiBot4 played as Black against gnugo3pt8. When both passed, in the position shown to the right, nomiBot 4 was well ahead. They then disagreed about the status of the white group in the upper left corner. Gnugo3pt8 claimed, correctly, that it is alive in seki, while nomiBot4 claimed that it was dead. This should not have affected the result of the game; even if the white group is counted as alive with territory, and the two black stones inside it as dead, Black is ahead by 24½ points. However, because of the disagreement, the game went into the "clean-up phase"; and both players then passed again. So the KGS system counted all the stones on the board as alive, giving White some territory and Black none, as seen in the diagram.


Move 122

In round 8, Zen19S had its only loss, to NiceGo19N. It resigned after NiceGo19N's move 122, shown to the left. This move creates a ko for the life of the upper right white group. Black has no large ko threat, while White has one, at B13 (in fact he has more, with careful play), for the life of Black's upper left corner, so White will win this ko.

Annual points

Players receive points for the 2014 Annual KGS Bot Championship as follows:

Zen	8
Aya	5
nomitan	3
Fuego	2
oakfoam	1

Details of processor numbers, power, etc.

AyaMC: Aya, MC version, running on one machine: 980X 3.3GHz 6 cores.
gnugo3pt8: GNU Go, version 3.8, running one thread on one i5-5200 CPU.
mpfuego19: Fuego, running on 256 cores (Xeon E7-8837, 2.67GHz) of an SGI UV1000 supercomputer.
NiceGo19N: oakfoam, running on a mini cluster: i7-2600K + i7-920.
nomiBot4: nomitan, running on a cluster of 7 machines (total of 92 cores, with an average frequency of 2.7GHz).
Zen19S: 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@4 GHz 24 GB RAM, a dual 6-core Xeon X5680@3.8 GHz 12 GB RAM, a 6-core i7 3930K@3.2 GHz 16 GB RAM. Computers connected via a GbE LAN. 50 cores total.