over-concentrated shape; inefficient cluster of stones
A Go term describing a shape where stones are placed too densely in one area, resulting in inefficiency. Often contrasted with good shape (良い形).
This over-concentrated shape is inefficient, so you should play elsewhere.
Beginners often end up making over-concentrated shapes.
Compound of 凝り (kori, 'stiffness' or 'over-concentration', from verb 凝る) and 形 (katachi, 'shape'). The term is specific to Go terminology.