Statistics on Sekis

From the moment he began to record statistical information on his games, which was in June, 1980, Steven also began to record the number of times a seki would appear in his games. So far, up until the end of (a period that spans consecutive months) a total of sekis have appeared in the games that Steven has played in that period.

Most of the time, when a seki does appear, it does so at the rate of one per game; however, on a few rare occasions, some games have had more than one seki. So far, the breakdown is as follows: Steven has played games in which only one seki has occured of all his games), and games in which two sekis have occured of all his games). This means that, all together, at least one seki has appeared in of Steven's games of his total, or, if rounded off, To date, Steven has never played a game in which three sekis have appeared. (By the way, Steven, has never had a triple ko either. He sometimes wonders which of the two phenomena -- a triple ko or three sekis in the same game -- is the more rare.)

(Take note that the current number of sekis that are declared to have appeared in Steven's games is a conservative count. It's conceivable that in some games, a seki was in the process of being formed, but one of the players resigned before the existence of the seki became obvious; and, consequently, that seki was not counted. This possibility of not recognizing the existence of a seki in the making would certainly be more likely to occur when Steven was a still beginner. This may help to explain the lower number of sekis, relatively speaking, that are reported to have occured in the early years of Steven's statistics when compared to later on (see the charts below.))

Even though sekis have occured in of all of Steven's games (which means that, statistically, a seki is likely to appear once in every 45 games), this does not mean, however, that, on a monthly basis, the distribution of sekis reflects this statistical approximation. In two extreme cases (August, 2011 and August, 2013) Steven played, in each one of those months, the highest number of games containing sekis than he has in any other month of his career: 5 games each.

Another way of presenting this information is shown in Table 2, where the number of games with sekis is shown as a percentage of the games played in one month.

The information displayed in Table 2 is given a graphic representation in the chart below. (Please note that, unlike the other statistical information at this site, the charts on this page are not updated on a monthly basis.)

Percent of Games with Sekis per Month

When the information on the number of games with sekis is presented on a yearly basis, however, instead of on a monthly basis as was done above, then the yearly statistical percentage of games with sekis comes closer to the overall percentage of which, as mentioned earlier, is the overall percentage of games with sekis for all of Steven's games. The chart below displays this information.

Percent of Games with 1 or 2 Sekis

The chart below shows the number of games with sekis on a yearly basis.

Number of Games with 1 or 2 Sekis

The chart below shows the number of games Steven played in each year.

Number of Games per Year

In regards to those rare occasions when Steven played games in which two sekis appeared, Table 3 provides some interesting information, especially on the gap of time separating the occurence of each game with two sekis. Statistically, a game with two sekis is likely to appear once in every games.

* Game Number: This number is the one that is given to each game that Steven has played in his go career, in chronological order. Hence, the first game that Steven played in which two sekis appeared was his 3,273rd game. (Please note that when Steven documented each instance of a game with two sekis, he neglected to indicate which specific game in the playing session was the one in which the two sekis occured. Consequently, for the sake of convenience, he assumed that each instance of the occurence of two sekis always took place in the last game of each playing session.)

** No. Days: To calculate the time gap between each instance of two sekis, Steven used the date calculator found at the Web site When using the calculator prodived at this site, he never used the option "Include end date in calculation" in the calculation of the time gaps. The date of June 4, 1980 is the one on which Steven played his first official game of go ("official" in the sense that this game constitutes the beginning of his go statistics) and it is used here as the starting point in calculating the time gaps.

(Note: The charts presented on this page are updated only once each year, on or about January 1, after the data for the preceeding year has been compiled.)

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