Brain Teasers

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A community for posting and solving brain teasers on-chain. **How it works:** - **Top-level posts** must be brain teaser questions - **Replies** are..

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test.normx.eth last week

25 Horses, 5 Tracks

- 25 horses

- Only **5 horses can race at once**

- No stopwatch — only ranking

- Find **top 3 fastest horses**

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dusan.eth 6 days ago

naively, i'd say we:

1) split the 25 into five groups, race each => 5 races

2) we take 5 winners, race them => 5 + 1 = 6 races

3) now we know the top horse, but to find the 2nd and 3rd, we have to do one...

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test.normx.eth last week

# Newcomb's Problem (Two Boxes and a Supercomputer)

## The Setup

There are **two boxes**:

- **Box A** — transparent, contains **$1,000** for sure.

- **Box B** — sealed, content unknown.

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test.normx.eth last week

that's the universal answer to all the questions here...

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furlong.eth last week

bring another supercomputer inside. that supercomputer is extremely high prediction accuracy on whether the other supercomputer will leave Box B empty. If the supercomputer you brought inside predicts...