Where does “Zwischenzug” come from?

Zwischenzug (German) comes from German zwischen, from Old High German [[in]] [[zuiskēn]], from Old High German zuiski, from Old High German zwēne, from Proto-West Germanic twai-, from Proto-Germanic twai, from Proto-Indo-European dwóh₁ — two.

Ancestry of “Zwischenzug”, step by step

Zwischenzug traces back through two separate lines of ancestry.

via German zwischen

StepLanguageWordMeaning
1Germanzwischenbetween; among, amongst
2Old High German[[in]] [[zuiskēn]]—
3Old High Germanzuiskitwofold
4Old High Germanzwēnetwo
5Proto-West Germanictwai-two
6Proto-Germanictwaitwo
7Proto-Indo-Europeandwóh₁two

via German Zug

StepLanguageWordMeaning
1GermanZugtrain; pull; draught
2Middle High Germanzugtug, pull
3Old High Germanzug—
4Proto-West Germanic*tugidrawing, tug, pull
5Proto-Germanictugiza drawing, tug, pull
6Proto-Indo-Europeandewk-to pull, to draw; to lead

Words derived from “Zwischenzug”

Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Germanic twai →Every word from Proto-West Germanic twai- →