Wedge

The English Go term 'wedge' has two meanings, though the meaning is usually clear in context:

• a basic play (suji) wedging into a one-point jump (warikomi in Japanese). See below.

• a play on the side that leaves room to extend to either side (wariuchi in Japanese). See splitting move.

There are many wedge variants.

A move wedging between two enemy stones.

Wedge  

BobMcGuigan The move above is also an example of hanekomi, a warikomi which is, at the same time, a hane.

A warikomi is often a tesuji used to create cutting points, separate the opponent's stones, or connect your own stones. For example:

 

is the warikomi.

This example is from the tesuji dictionary by Segoe Kensaku and Go Seigen.

HolIgor comments.

I was taught that it is to your disadvantage to play between two stones separated by 1 space. I followed this rule to discover later that this is not always true and as the stones appear on both sides of the one-point jump formation you have to consider seriously a probability of a cut. At some point the motto of the day was "Check your connections".

Get good connections, trust your connections but check them.

See also

• Angle wedge
• Wedge in invasions
• Weird and Wonderful - Volume 1 - Extraordinary Moves by Professional Go Players: this book includes a chapter titled "Wonderful Wedges" that features several wedges that were played in symmetrical shapes by professional players, among which the famous wedge play in a variation of a game between Dosaku and Pechin Hamahiga in 1682.