Shortcut Hunt

Eight models that score suspiciously well. Each one has found a shortcut in its data. Can you spot what it is really using? Guess, then watch the model retrain without its shortcut, right here in your browser. At the bottom, run the same checks on your own CSV.

The hunt

Three points for a first guess, two for a second, one for a third. Keys: 1–9 pick, R reveal, N next, H facilitator mode.

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Some of the rows it learned from

What is the model really using?

Bring your own CSV

The four hunts from the game, run automatically on your file: ID columns that track the label, columns too predictive to be true, test rows already seen in training, and a calendar doing the model's work. Nothing is uploaded.

Drop a CSV here

or

Needs a column with two classes to predict (or a few classes; the biggest is then tested against the rest). Up to 3,000 rows are used.