• ✓Number four on the brain-game shortlist (docs/brain-game-roadmap.md)
• ✓Deliberately not another logic grid: a grid rewards bookkeeping, this shows the candidate set itself shrinking
• ✓Every clue reports how many it killed at the moment it was played
• ✓The end compares your order with the cheapest one: same answer, different work
• ✓1,000 puzzles generated and verified: exactly one survivor every time, and no clue that removes nothing
• ✓Shapes, colour, pattern and size are all SVG — no art needed
• ✓A set-your-own-clues mode, so a child can build a puzzle for somebody elseplanned

✓ = done · ☐ = planned. Every game is built one step at a time like this.