Parallel Fuseki
A parallel fuseki (cf. diagonal fuseki) is a fuseki in which both players make their initial plays in adjacent empty corners.
![[Diagram]](diagrams/36/0508e7fbc5ebc5768172d3c560cd0c2b.png)
Black begins with 1 and 3 which White answers with 2 and 4. The B and W positions run parallel to each other on opposite sides of the board. Note that if 3 were at 4 and 4 at 3 the result would be the same.
![[Diagram]](diagrams/8/c783f9c1b4b54ac22989f77c62f0a16c.png)
![[Diagram]](diagrams/24/27fd2cdb65a5e4518f1f34bf394918e4.png)
When W answers 1 with a play in an adjacent corner, B has the opportunity to play in the diagonally opposite corner. If W then plays in the last remaining empty corner, the two players have created a diagonal or tasuki fuseki.
![[Diagram]](diagrams/38/c2604a02df272f9d4573bfe8356305a3.png)
The famous Shusaku Fuseki is neither a parallel nor a tasuki fuseki in the sense that the players do not start out by splitting the corners between them.
The parallel fuseki that have a high profile are the Chinese-style formations, and sanrensei. These however are complex openings, which branch into very many variations from about move 10. Nirensei has been a major presence in professional games for the past two decades, increasingly adopted by White.
One parallel formation that receives relatively little attention (in the English-language literature) is the Orthodox fuseki.
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