aclat, 6k* versus jansteen, 3d* (1994-04-16)
Diagram 4: 
san ren-sei
In the real game: Index *
Backward * Forward
Variations: Parent * Previous * Next (Nice shape)
From this diagram: 
 
- B1
-  
I mentioned this shape before, three hoshi stones in a row, perfect shape. Please note that this move is also far away from white's "strength", making it easier to build up a moyo (framework).