You will see a short Python snippet that has been passed through one or more obfuscation transforms. Reveal it, work out what it prints, answer, and rate your confidence. Correctness, response time and confidence are recorded in this browser only.
Shortcuts: Space reveal, Enter submit or continue, 1 to 4 pick a choice, Shift+Enter new line in the answer box.
Correct
Stated confidence against observed accuracy. Points on the dashed line are perfectly calibrated; points below it mean overconfidence.
A trial counts toward every transform in its stack.