Endgame Tesuji 1

Any skilful play in the endgame deserves to be called tesuji. Most endgame tesujis take sente rather than ending in gote and/or gain more points locally than a more obvious move.

Example 1

Correct play  

Here Black makes use of to jump further into White's territory; now White cannot answer at a. Black might miss this chance by playing at a.

White error  

White answers at a and loses five stones.

Correct play - continuation