matchless
A free puzzle game — play it in your browser, no install. Fireworks cascade puzzle where par is a theorem — Tarjan SCC, brute-force verified. Zero-dependency Java.
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Open the live demo Source on GitHubFrom the README
Light the whole sky with the fewest matches. A daily cascade puzzle whose minimum score isn't tuned by a designer — it's proved by a theorem.
**▶ Play it: (new board every day; works offline; installable as an app on iPhone/Android via "Add to Home Screen")
*Left: one match, mid-cascade. Right: X-ray of the same board. Each colour is one strongly connected component; nothing points into the four dashed ones, so each needs its own match and par is 4.*
Firework shells sit on a grid. Each shell has fuses (arrows) pointing at neighbours.
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