Baai no te
Baai no te (場合の手)[1] is a Japanese term for a move that is playable depending on circumstances. The phrase is typically used to describe a move that is not usually considered a joseki move but could be good in certain circumstances, in other words, a special case move.
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Example 1
This example comes from this Japanese site.
is 場合の手. Ba is usual. But Imamura played at
because he probably did not want to approach the strong stone,
, even by one space.
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Example 2
[1] From the Japanese word 場合 【ばあい】 (n-adv,n) case; situation; (P) as noted in Jim Breen's WWWJDIC Server