What makes OPEN WINDOW so hard? | Top 1 Impossible Level

Open Window is, as of this video's creation, ranked number 1 on the Impossible Levels List, above levels like Tax Evasion, CYCLOLCYC, and Domba. The ILL:   / discord   impossiblelevels.com Music: oculi - vlowoid Explosive Craftmanship - vlowoid signals - vlowoid Everywhere - vlowoid Open Window vGH - Jarvis9999