Level 1·0 slides
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Slide across the ice to reach the fish. Plan every slide!
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To slide, use the arrow buttons, swipe, tap a square in the direction you want, or press ← ↑ → ↓. Z undoes, R restarts and H or 💡 shows a hint. Every level has been checked by computer, so every one can be finished. Nothing is saved: ticks for finished levels last only this visit.
Planning several moves ahead and thinking backwards from the goal ("what could stop me right next to the fish?"): the kind of reasoning behind coding and maths problem solving.