Affaire n°991 : L'évasion invisible

Four people are trapped in a locked room. One by one, they escape. But who got out first?

Each person makes a statement about when they escaped. Some are telling the truth. Some are lying. Your job: figure out the exact escape order.

This puzzle will test your logic, your patience, and your ability to spot contradictions. Ready? Let's begin.

The Puzzle: Four People, One Locked Room

Four friends—Arjun, Beena, Chaitanya, and Divya—are locked in a room. They escape one after another. After they are all out, the police ask each person: "What was your escape position?"

Here's what each person said:

The key rules:

• Only two people are telling the truth.
• The other two are lying completely.
• Each statement is either entirely true or entirely false (no half-truths).

Who escaped first? And what is the complete escape order?

Think Before You Scroll

Pause here. Take a minute. Or ten. Work through the logic on paper. When you think you have the answer—or if you're completely stuck—scroll down.

This puzzle has layers. The first answer might feel right. But is it?

How to Crack This Puzzle

Here's the method that works every time.

Step 1: List All Possible Escape Orders

With four people, there are 24 possible orders. That's too many to test manually. So we need to be smarter.

Step 2: Break Down Each Statement

• Arjun: "Before Beena" AND "Not last"
• Beena: "After Chaitanya" AND "Not first"
• Chaitanya: "Before Divya" AND "After Arjun"
• Divya: "Before Arjun" AND "First"

Step 3: Look for Clues That Can't Both Be True

Notice the contradictions. Divya says she was first AND before Arjun. Arjun says he was before Beena and not last. If Divya is first, Arjun cannot be before Beena if Beena is also before Arjun? Wait—we need to test systematically.

The Solution: Who Escaped First?

Let's test each person as a truth-teller. Since exactly two people tell truth, the other two lie.

Testing Each Possible Pair of Truth-Tellers

Wait—the table shows Arjun + Chaitanya works. Let's verify carefully.

Verifying the Solution

Escape order: Arjun → Chaitanya → Beena → Divya

• Arjun (1st): "Before Beena" — TRUE (1st before 3rd). "Not last" — TRUE. Arjun is telling the truth.
• Chaitanya (2nd): "Before Divya" — TRUE (2nd before 4th). "After Arjun" — TRUE (2nd after 1st). Chaitanya is telling the truth.
• Beena (3rd): "After Chaitanya" — TRUE (3rd after 2nd) AND "Not first" — TRUE. Wait—that makes Beena truthful too. But only two people should tell truth.

Hold on. We have three truth-tellers? Let's re-read the puzzle carefully.

Beena says: "I escaped after Chaitanya. I was not the first one to escape."

In the order Arjun (1st), Chaitanya (2nd), Beena (3rd), Divya (4th):

• Beena is after Chaitanya — TRUE
• Beena is not first — TRUE
• Beena is telling the truth!

That would mean Arjun, Chaitanya, AND Beena all tell truth. But the rule says exactly two people tell truth.

So our assumption was wrong. Let's go back.

Re-evaluating: The Correct Approach

We need exactly two truth-tellers. Let's test every order systematically.

Testing All 24 Orders (Simplified)

Instead of testing all 24, let's use deduction.

Divya says: "I was first" AND "I escaped before Arjun."

If Divya is telling truth, she is first AND before Arjun. That's possible.

If Divya is lying, she is NOT first OR she is NOT before Arjun (or both).

Arjun says: "Before Beena" AND "Not last."

Chaitanya says: "Before Divya" AND "After Arjun."

Beena says: "After Chaitanya" AND "Not first."

The Critical Observation

Chaitanya's statement says: "After Arjun" AND "Before Divya." This means Chaitanya is between Arjun and Divya.

So if Chaitanya tells truth, the order is: Arjun → Chaitanya → Divya (with one person in one of the gaps).

Beena's statement says: "After Chaitanya" AND "Not first." If Beena tells truth, Beena is after Chaitanya and not first.

Arjun's statement: "Before Beena" AND "Not last."

Divya's statement: "Before Arjun" AND "First."

Now, can Divya and Chaitanya both be truth-tellers? No, because Chaitanya says "Before Divya" and Divya says "First." If Divya is first, she cannot be after Chaitanya.

So Divya and Chaitanya cannot both tell truth.

Can Arjun and Chaitanya both be truth-tellers? If Chaitanya is truth-teller, order is Arjun → Chaitanya → Divya. Then Arjun before Beena? Beena must be after Chaitanya or before Arjun? Let's test.

If Arjun and Chaitanya are truth-tellers:

• Arjun: before Beena, not last
• Chaitanya: after Arjun, before Divya
• Order: Arjun → Chaitanya → Divya. Beena must be somewhere.
• Beena must be after Arjun (because Arjun before Beena).
• Beena cannot be first (true).
• If Beena is after Chaitanya, Beena tells truth too → 3 truth-tellers. Invalid.
• So Beena must be before Chaitanya.
• Order: Arjun → Beena → Chaitanya → Divya.

Check truth-tellers in this order:

• Arjun: "Before Beena" (1st before 2nd) — TRUE. "Not last" — TRUE. Arjun truth-teller.
• Beena: "After Chaitanya" (2nd after 3rd?) — FALSE. "Not first" — TRUE. Beena is lying (one false makes entire statement false).
• Chaitanya: "Before Divya" (3rd before 4th) — TRUE. "After Arjun" (3rd after 1st) — TRUE. Chaitanya truth-teller.
• Divya: "Before Arjun" (4th before 1st) — FALSE. "First" — FALSE. Divya lying.

Exactly two truth-tellers: Arjun and Chaitanya. The rule is satisfied.

Why This Puzzle Is Tricky

• Multiple statements contain two parts—both must be true for the person to be truthful
• The phrase "I was not the last" and "I was not first" sound like simple qualifiers but completely change the logic
• Most people assume the escape order is the order they speak—but they speak in a different order
• The solution requires testing combinations, not guessing

Escape Order Comparison: All Possibilities

Frequently Asked Questions About Locked Room Puzzles

The Takeaway: Logic Prevails

This puzzle demonstrates why logic matters. Not just for puzzles—for life. In arguments. In decisions. In understanding people.

When people say contradictory things, don't assume. Test. When something seems obvious, question it. When you find a contradiction, follow it.

The person who escaped first was Arjun. But more importantly: You now know how to solve the next puzzle faster.

Keep solving. Keep questioning. Keep escaping.