Whole board seki
Most sekis only occupy a small part of the board, but sometimes the whole board can contain only Sekis can occupy complete boards.
Here an examples
Copied with permission from GoGameGuru
The game including sgf file can be found at http://gogameguru.com/seki-go-game-1/
but the game It is clearly contrived, by one or more very strong Go players and not all the moves are perfect.
This game was named 仙姑真迹 (literally means: female immortal's original), a composed game, recorded in 万汇仙机.
万汇仙机's full name is 潞藩辑纂万汇仙机棋谱, a Chinese weiqi book published in 1634, the author was 朱常淓 (pronunciation: zhu1 chang2 fang1, 1607-1646).