Two ways through the first collection
The game taught SQL one keyword at a time: a checkpoint for WHERE, another for the AND after it, and the query traced out in grey for you to retype.
Guided
SQL from nothing, one clause per checkpoint
The query traced out, a detective at your shoulder
27 checkpoints across the five cases
Expert (or programmer)
13 checkpoints instead of 27: more deductions
No dictated query, and nothing to retype
One tour of the desk, then nothing speaks again
Also in this update
The order of the columns is no longer part of the answer. SELECT at_time, kind, source and SELECT source, kind, at_time both pass.