A go technique where a stone is placed to sandwich an opponent's stone between two friendly stones, restricting its movement.
White attacked Black's single stone with a clamp.
Katakana spelling is common for this go term; usually written in kana.
Kanji spelling is rare; the word is usually written in kana.
Compound of 挟み (hasami, 'pinching') + 付け (tsuke, 'attaching'), referring to the pinning attachment move in go.