Start easy enough that she cannot fail
A clever cat still needs a first puzzle she wins immediately. Begin with food visible and barely obstructed: kibble scattered in a muffin tray, treats in an open egg box, pieces in a shallow tray she must paw out one at a time. The lesson you are teaching is not the trick — it is that this new object is where food comes from and that working at it pays. Serve only part of her meal this way at first, with the rest in her normal bowl, so enthusiasm builds without pressure. A cat introduced to a hard puzzle on an empty stomach learns frustration, not skill, and some cats simply walk away from a game they cannot read; the early easy wins are what buy you her patience for the harder stages later.
The middle stages: one new idea at a time
Once she empties the starter puzzles briskly, add a single layer of difficulty at a time — that discipline is what stretches the progression over months instead of a fortnight. Lids she must nose or paw aside come first, then sliding covers that reveal compartments one by one, then cups to tip, tubes to roll so food falls from an opening, and drawers or flaps that need a pull. Each stage should combine a new action with familiar ones, so she is solving one fresh problem inside a game she already understands. Judge readiness to move up by her manner as much as her speed: a cat who solves quickly, then looks at you bright-eyed, is under-challenged, while a cat who bats the puzzle hard, vocalises, or leaves and returns repeatedly is telling you the current stage is enough for now.
Advanced play, and rotation as difficulty
At the top end, combine actions into sequences — slide, then tip, then fish the piece out — and use puzzles where the food is fully hidden, so she works from memory, sound, and smell rather than sight. But the most underused difficulty lever is rotation itself. A clever cat does not just solve a puzzle; she memorises it, and a memorised solution is no longer a challenge, it is a chore performed at speed. Keep several puzzles and rotate them every few days, bring retired ones back after a month's absence, and vary where the puzzle is served and which part of the meal goes into it. Cardboard constructions, rolled towels with kibble inside, and food hidden under cups on a tray extend the repertoire cheaply, as long as everything is sturdy, cleanable, and free of pieces she could swallow.
Protecting the point: enrichment, not obstruction
A puzzle programme fails if it ever makes a hungry cat unable to eat. Always leave a portion of the day's food — especially for kittens, seniors, and cats with health needs — accessible without problem-solving, watch her weight monthly, and retire any puzzle that produces more frustration than engagement. Wash food puzzles as you would a bowl, since old grease and crumbs in sliders and tubes dull both hygiene and scent. And notice which style of problem she loves: some clever cats are engineers who relish mechanisms, others are hunters who prefer searching and pouncing, and a progression tuned to her style will hold her interest far longer than difficulty for its own sake. If she solves everything you own in a week, vary the search itself — several small puzzles in different rooms beats one elaborate device.
Finding the next stage when your ideas run out
Most owners stall not at the start but at month three, staring at a cat who has mastered every feeder in the cupboard and wondering what a fair next step looks like. That is a good moment to put the details into your question — the actions she has mastered, the speed, where she gets stuck — and ask what a fair next step up looks like. Put your next question to KinsLe's Kinny; he draws his answers from the library behind KinsLe Answers.