The Matchbox Machine
You're going to train Matchy at tic-tac-toe — with marbles, not code. Matchy is a cabinet of matchboxes left behind by the old lighthouse keeper: NO strategy at all, just marbles in his drawers — and he dreams of becoming the best in the world. His trainer is YOU.
Your trainer mission — the 5-step plan
Make Matchy unbeatable… and stay able to beat him?
- 1Discover his trick. Boxes, marbles, zero brain — you do every step with your own hands.
- 2The ONE-box challenge. Watch him become an expert at a single situation, right before your eyes.
- 3Face him. His whole cabinet against you — he learns from EVERY game.
- 4The night training. 2000 games all by himself while your back is turned.
- 5The final test. Can you still beat him? Badge + password waiting at the end.
CLUE #2 of the Island Mystery is hidden in this cabinet.
In talk mode: Matchy really speaks to you, comments on the game, and you can ask him questions out loud anytime.
Matchy's trick, in pictures
Six pictures — at each picture, do what it asks.
The Matchy Challenge — ONE box that learns
Shake Matchy: he draws a marble and plays that square. Only one square wins — and he doesn't know which one! Win: 3 marbles as a gift. Miss: the marble goes in the trash.
only one square lines up 3 ⭘
Shake Matchy to start!
Try #0
Matchy
Play against Matchy — his whole cabinet
Your turn! You play X.
His box for THIS turn
The label = the game right now. In the drawer: his marbles, one color per open square.
The movie of one learning evening
Two games, frame by frame. The kid plays the SAME moves both times — watch the marbles between the two games.
Matchy's cabinet
One shelf for each move of the game. The most-worked boxes come first — touch a box to open it up big.
You saw his marbles disappear when he loses. Why does that make him better?
The night training
Launch his training night: 2000 games all by himself, in a few seconds. Then we measure whether he really got better — and you try to beat him.
0
practice games
The Island Notebook
What you just saw is called reinforcement learning:
1. Try
At first he draws anything — all marbles are equal
2. Punish / reward
Losing erases marbles, winning adds more — the MISTAKE is his teacher
3. Repeat ×1000
Game after game, the good moves take up all the room
His most-trained box:
This machine really exists: MENACE, built in 1961 by Donald Michie… with 304 real matchboxes. Not one computer chip. Just marbles.
Go further: the MENACE lab — become the machine yourself, with the 304 real boxes
It's everywhere in your life
Tap each card to check your answer.
How do you train a dog to shake a paw?
think first, then touch to check
A treat when he gets it right, nothing when he misses. That's EXACTLY Matchy's marbles — reinforcement existed long before computers!
How did an AI beat the world champion at Go?
think first, then touch to check
It played MILLIONS of games against itself — like Matchy's night training, but giant-sized. Every loss erased “marbles,” every win added more.
How does a robot learn to walk without falling?
think first, then touch to check
It falls thousands of times! Every fall = punishment, every good step = reward. Mistakes are its teacher — remember that for the Mystery…
The Duo Moment
Go get a parent! The challenge: your parent plays against trained Matchy — and YOU, before each machine move, call out the square he'll probably play by reading his marbles.
Teacher bonus: explain to them WHY it's “probably” and not “for sure.”
Your turn to teach!
Explain these two ideas to your parent, in YOUR words. Touch the card to see if you said it like Matchy.
1. How did Matchy get good without knowing any strategy?
tap to see Matchy's version
“He draws marbles at random, but losing erases the losing marbles and winning multiplies the winning ones. After lots of games, only the good moves are left. His teacher is the MISTAKE.”
2. If you let him win on purpose 20 times, what would happen?
tap to see Matchy's version
“He'd learn everything wrong! His bad moves would get rewarded and multiplied. A machine learns whatever we let it learn — that's why the humans who train it carry a big responsibility.”
Quest complete!
CLUE #2 — THE ISLAND MYSTERY
Stuck under the cabinet drawer, a yellowed label with the second password:
ERREURThe passwords are in French: ERREUR (it means ERROR). Type it exactly like that on the island.
“A machine gets good by being punished for its mistakes — its ERREURS.”
Only 2 passwords left before you wake the Summit Machine. The next one is waiting for you in the Word Forest…