What each one is, how it works, and where it stands, with the code behind it.
I solved every day of a real Colorado year exactly, from public Department of Energy data: running the battery on the cheapest schedule is worth $456. Then I sent the same problem to an IBM quantum machine six times, writing my prediction down before each run. The ordinary computer wins that contest and it is not close, so the open question is what the quantum side is good for yet.
ECDSA.fail is an open competition to find the most efficient quantum computer circuit for breaking the cryptography that guards Bitcoin. A submission has to beat the best score on the leaderboard, and it has to pass a correctness test generated from the circuit itself, so every edit re-rolls the test. Landing an improvement means searching millions of re-rolled candidates for one that passes, a cost the score does not count. I measured that cost, built a filter that spots a failing candidate in milliseconds instead of the official checker’s twenty seconds, and lost my own attempt to a leaderboard that moved faster than my laptop could search.