Welcome to your daily brain workout! Today’s puzzle will stretch your logical thinking. Ready?

🧩 Today’s Puzzle: The Blue-Eyed Islanders

On an island live 100 people with blue eyes and 100 people with brown eyes. Nobody knows their own eye color. There are no mirrors, and nobody discusses eye color. If a person ever learns they have blue eyes, they must leave the island at midnight that night. One day, a visitor arrives and announces: ‘I see at least one person with blue eyes on this island.’ Everyone hears this. Who leaves the island, and when?

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💡 Hint

Start with a smaller case. If only 1 person had blue eyes, what would they realize? Then try 2 people. The logic cascades — this is the ‘Common Knowledge’ puzzle.

📅 Yesterday’s Puzzle (22 June 21) — Answer

Puzzle: The Camel and Bananas — 3,000 bananas, 1,000-mile journey, camel carries 1,000 at a time.

✅ Answer: 533 bananas. Use depots at mile 200 (drop from 3,000 to 2,000 bananas) and mile 533 (drop to 1,000), then travel the final 467 miles.

🧠 Train your brain daily! Share this puzzle with a friend and see who solves it first. Bookmark our Daily Puzzle page for more!