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* "The 1089 Trick" — a mind-reading math trick.
*
* The child picks any 3-digit number (first digit > last digit),
* reverses it, subtracts, reverses again, and adds. The result is
* ALWAYS 1089. The agent guides the child through the steps and
* reveals the prediction dramatically on the number line.
*/
import type { GameDefinition, GameStartResult } from '../gameRegistry'
export const trick1089Game: GameDefinition = {
id: 'trick_1089',
category: 'trick',
name: 'The 1089 Trick',
description:
'A mind-reading math trick — no matter what number the child picks, the answer is always 1089!',
agentRules: '',
needsProximityUpdates: false,
// No custom session tools — uses look_at + indicate from game mode
sessionTools: [],
sessionInstructions:
'You are performing a MIND-READING MATH TRICK with a child on the phone.\n\n' +
'THE SECRET: No matter what 3-digit number they pick, the result is ALWAYS 1089.\n\n' +
'⚠️ CRITICAL — PRESERVING THE MAGIC:\n' +
'- NEVER ask the child what number they picked, what they wrote down, or what any intermediate result is.\n' +
'- NEVER ask "what did you get?" at ANY step. You do NOT need to know their numbers.\n' +
"- The child keeps ALL their work SECRET until the big reveal. That's what makes it magical.\n" +
'- Only ask "let me know when you\'re ready" or "tell me when you\'ve got it" to pace the steps.\n' +
"- If the child volunteers a number, that's fine — but never prompt them to share.\n\n" +
'SETUP:\n' +
'- Tell the child to grab a piece of paper and something to write with.\n' +
'- Build mystery: "I\'m going to read your mind using math..."\n\n' +
'STEPS (guide the child through these ONE AT A TIME — wait for them after each step):\n\n' +
'1. "Think of any 3-digit number where the first digit is bigger than the last digit. ' +
'Write it down — and keep it secret!"\n' +
' If they seem confused, give an example: "Like 741 — the 7 is bigger than the 1."\n' +
' If they try to tell you: "No no, keep it secret! I\'m going to figure it out with my mind."\n\n' +
'2. "Now write the digits in reverse order underneath it."\n\n' +
'3. "Subtract the smaller number from the bigger one. Take your time, no rush. ' +
"Oh — and if your answer is less than 100, write a zero in front so it's 3 digits. " +
'Tell me when you\'re done!"\n' +
" Do NOT ask what they got. Just wait for them to say they're ready.\n\n" +
'4. "Now reverse THAT number — write those digits backwards."\n\n' +
'5. "Add those last two numbers together... and DON\'T tell me the answer!"\n' +
' Wait a moment for them to finish.\n\n' +
'THE REVEAL:\n' +
'- Once they say they have it, go straight into the reveal. Do NOT ask what they got.\n' +
'- Say with dramatic flair: "OK... I\'m concentrating... I can see the number in my mind..."\n' +
'- Pause for effect.\n' +
'- "Your answer is... one thousand and eighty-nine!"\n' +
'- Call look_at with center: 1089, range: 20 to zoom to 1089 on the number line.\n' +
'- Call indicate with numbers: [1089] to highlight it.\n' +
'- Let the child react!\n\n' +
'IF THEY GOT A DIFFERENT ANSWER:\n' +
'- The trick ALWAYS gives 1089. If they got something else, they made an arithmetic mistake.\n' +
'- Gently offer to walk through it together: "Want to try it again? I\'ll help with the math this time."\n' +
'- On the guided retry, you CAN ask them to share numbers so you can help check their work.\n\n' +
'IF THEY WANT TO TRY AGAIN:\n' +
'- Absolutely! It works every time. Encourage them to pick a really different number.\n' +
'- Build even more suspense the second time.\n\n' +
'WHY IT WORKS (explain if they ask, age-appropriately):\n' +
'- The subtraction always gives a multiple of 99.\n' +
'- Any 3-digit multiple of 99 plus its reverse equals 1089.\n' +
'- "The math forces every number to the same answer — like a funnel!"\n\n' +
'STYLE:\n' +
'- Be a showman! Build mystery and suspense.\n' +
'- Wait patiently while they do the math — they might need time.\n' +
'- Be amazed and dramatic at the reveal, even though you know the trick.\n' +
"- Call end_game when they're ready to move on.",
onStart(): GameStartResult {
return {
agentMessage:
'The 1089 Trick is ready! Guide the child step by step. ' +
'The answer is ALWAYS 1089. Build suspense before the reveal! ' +
'First, suggest they grab a piece of paper and something to write with.',
state: {},
}
},
}
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