Overview
tendo is a minimalist number-and-shape puzzle with clean constraints where you place tiles to satisfy row/column rules and small region counts. The beauty is in quiet certainty: you don’t guess; you deduce, marking candidates, eliminating impossibilities, and committing only when logic completes a shape or a sum. The UI keeps notes legible, contrasts gentle, and regions crisp so reasoning feels like editing a blueprint. The cadence is: candidates, eliminate, confirm, propagate. Hard boards ask for parity checks, sum splits across regions, and neighbor rules that turn ambiguity into certainty. When stuck, change vantage—solve a smaller region, propagate constraints, and watch the grid shed noise. Misses teach calmly—over-commitments reveal a missed rule, cluttered notes suggest pruning, and stalls ask for technique order: singles, interactions, then pairs. Finishing reads like placing truth on a canvas; numbers and shapes land because logic had nowhere else to go.