• ✓Every step has a PHYSICAL reason it cannot come earlier, so the order can be reasoned out instead of memorised
• ✓A wrong card hands back the REASON, never the answer — ice goes in while the glass is empty, or the drink overflows
• ✓The glass on the counter really fills as the cards land, so looking at it suggests what it obviously needs next
• ✓Three, four, five or six steps — and putting the glass down is always the first
• ✓A script checks the answer is always the canonical order, and that the tray never falls out already sorted
• ✓Fills roadmap row J12, named at the start and never built
• ✓Let the cards be dragged into order instead of tapped one at a timeplanned
• ✓Recipes where two steps genuinely can swap, so “before” is not assumed to bind every pairplanned

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