Daily Brains: a naturalist's logic puzzle. Each plate shows labelled examples of two or three made-up species, drawn as charming field-guide creatures with countable eyes, legs, horns, wings and tails. Work out the hidden rule that separates them, then sort the strays. Four plates a day from Easy (one trait) to Genius (XOR riddles with a misleading pattern), and every plate is proven fair: every rule of the stated size that fits the examples sorts the strays the same way. Scored on slips, not speed.
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