Identifying gaps in conditional arguments is critical for almost every Sufficient Assumption question. It's also important for many Necessary Assumption, Strengthen, Weaken, and Flaw questions. Argument ER trains you to spot those gaps and develops your conditional reasoning instincts.

How it works. Each game presents nine arguments across three rounds of rising difficulty. First you diagnose the gap and name the specific link the argument is assuming. Then you operate, choosing the statement that makes the argument valid.

Review your mistakes. After each game, you'll get a report about each argument and an explanation for how to identify every gap. You can also share your results as an image or text and challenge your study group to beat your score.

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