Broadcast graphics, wired to a live feed
FLAGFALL is a broadcast graphics package for bullet chess. It is not a replay of a game — it is showing whatever game lichess.org is showing right now. Grandmaster bullet, a move about every second, nobody’s rehearsal.
Live above. Evaluation computed locally by Stockfish 18 — not a cloud lookup 1920 × 1080 · scaled to fit
Bullet ends in a scramble: both players under fifteen seconds, moves landing 200ms apart. Most broadcast graphics get louder there. This one gets quieter, and then the instrument starts to fail. Never the board — the readout is broken, the game is not.
The full instrument on the live Lichess TV bullet feed, with the diagnostic readout underneath. Press C for a clean feed, R to replay the last moment.
02 / Formula 1The identical .riv replaying the 2026 Hungarian Grand Prix from OpenF1 lap timing. Same artboards, same view models, same Luau. Only the adapter changed.
The eight-by-eight, the thirty-eight piece shapes, the last-move marks and the check ring are objects in the Broadcast artboard, bound to one root view model with 282 properties. A move is a hand: the piece rises, grows about five percent as it crosses, and settles.
Stockfish 18 runs in the browser at 150ms a move. That cannot keep up with bullet, so every request carries the ply it asked about and a result arriving two plies late is thrown away rather than pinned to the wrong move.
The three modules re-caption themselves out of the same bound text: 02 / MOVES becomes 02 / LAP GAPS. DRS range, inside one second, trips the same scramble state that a chess flag-scramble does. That mapping was not planned; it fell out of the architecture.
The artboards, view models, state machines, bindings and Luau were authored by an agent driving Rive’s own Editor MCP rather than by hand. The Luau cores carry 32 tests that run inside the editor.