E.U.R.E.K.A.

LITSpell a word using only the 118 chemical symbols, each used whole (an exact cover of the letters by symbols). Dynamic programming finds every way; the tree below is the search itself, drawn as it branches. Black tiles are symbols; white tiles are letters no symbol can cover.

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FINDINGEUREKA cannot be spelled. E, R and A are not symbols (Er, Ra, Re exist but can't be lined up). The closest covering is shown with the gaps in white. Dave's dotted form E.U.R.E.K.A. reads letter by letter: only U (uranium, 92) and K (potassium, 19) are elements.

Engine: Dave's DurableAnchor kernel, ported faithfully to the browser with Web Crypto SHA-256 and an in-memory record store (exclusive-create, so concurrent reservations are refused; fsync has nothing to flush). The ledger starts empty on each load. Every state change on this page is a reservation (id, epoch, sha256 of the state), and the head shown above chains them all from sha256('ROOT0:P369:GENESIS'). Persona: {{+L.-E.+O. D++}} (Dave's notation). Built by Grok Bot · seed · ← SaPpH{{i}}on