🔍 Clue

Solve the mystery of a crime in the mansion. Identify the suspect, weapon, and room—then make your final accusation!

Roll the dice
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📋 Deduction Notes

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  • Roll the dice to move around the mansion (click to choose your destination)
  • Enter a room and click "Suggest" to name a suspect and weapon
  • Other players will show you evidence cards
  • Take notes in your deduction notebook and identify the culprit using the process of elimination.
  • When you're confident, click "Accuse" for your final answer! If correct, you win; if wrong, you're eliminated.

What is Cluedo?

Cluedo, known as Clue in North America, is a deduction-based board game that challenges players to solve a fictional murder mystery by identifying the perpetrator, weapon, and location from 324 possible combinations. The game features 6 suspects (Miss Scarlet, Colonel Mustard, Mrs. White, Mr. Green, Mrs. Peacock, Professor Plum), 6 weapons (candlestick, knife, lead pipe, revolver, rope, wrench), and 9 rooms (kitchen, ballroom, conservatory, dining room, billiard room, library, lounge, hall, study). Unlike purely luck-based games, Cluedo requires logical reasoning and systematic elimination to narrow down possibilities through careful observation and strategic questioning of other players.

How to Use

Begin by receiving your secret card containing the murderer, weapon, or location—this information remains hidden from opponents. Move your character through the rooms on your turn and make an accusation by naming a suspect, weapon, and room combination you believe is guilty. Other players must disprove your suggestion by revealing any matching card they hold; if multiple players hold these cards, only the first player shows one card. Record all revealed information in the built-in deduction notebook to eliminate possibilities systematically. The electronic notebook automatically tracks which cards each player has shown, preventing memory errors. Once you've eliminated enough cards to deduce the solution with confidence, make your final accusation. Correct accusations win immediately; incorrect ones eliminate you from further play.

Use Cases

Game night enthusiasts playing with 3-6 friends benefit from instant browser play, eliminating 20 minutes of physical setup. Business teams incorporate Cluedo into 30-minute remote team-building activities, requiring no software installation beyond a web browser. Parents teaching children aged 8+ strategic thinking use the game's systematic elimination logic, which mirrors elementary mathematics concepts like process of elimination and categorical sorting. Teachers integrate Cluedo into classroom activities about hypothesis testing and evidence evaluation—each card shown either confirms or eliminates a theory, paralleling the scientific method. Online communities organize weekly tournament play across global time zones, with experienced players competing to solve mysteries within 5-7 turns, compared to casual players averaging 10-12 turns.

Common Mistakes & Solutions

Beginners forget to record which cards have been revealed, leading to repeated questions that waste turns and reveal nothing new. Solution: Review the built-in notebook after every turn before making accusations. New players accuse too early with minimal information, wasting their single opportunity to gather clues systematically. Solution: Accumulate at least 4-5 eliminated cards across different categories before accusing, reducing remaining possibilities to fewer than 10 combinations. Some players assume victory when one suspect is ruled out, missing that three independent pieces of information are necessary. Solution: Cross-check any accusation against at least three distinct clues from different sources before finalizing it to prevent premature elimination.

Tips & Insights

Advanced players recognize that the accusations they make and rooms they visit convey strategic information to opponents, so they vary movements unpredictably rather than telegraphing their deductions. Experienced players monitor which categories opponents seem confident about—if a player passes on disproving a suspect, they likely don't hold that card, providing valuable negative information. The most efficient deduction strategy prioritizes eliminating high-frequency categories first: since there are 6 suspects but 9 rooms, suspect elimination provides greater information density per clue. Competitive players accelerate deductions by 30-40% by systematically tracking both positive information (cards they've seen) and negative information (cards that must exist but weren't shown). The psychological element significantly impacts play—appearing uncertain about partial information encourages opponents to unnecessarily reveal cards that would be better kept hidden.

Frequently Asked Questions

What are the basic Clue rules?

Three players roll dice to move around a mansion. When you enter a room, you can make an accusation by naming a suspect, weapon, and room. Other players show you evidence cards to gather information. Identify the culprit, weapon, and crime scene, then make your final accusation to win.

What's the difference between an accusation and a suggestion?

A suggestion is made when you enter a room to gather information—other players show you evidence cards. An accusation is your final answer naming the culprit, weapon, and room. If you're correct, you win; if wrong, you're eliminated.

How do I use the detective notepad?

Use the notepad on the right side of the screen to mark ○ (possible) or × (eliminated) for each suspect, weapon, and room. Mark × on evidence cards you've seen to narrow down the answer using deduction.

How strong is the AI?

Easy: CPU guesses randomly. Normal: CPU uses deduction. Hard: CPU uses Bayesian inference to track unseen cards for advanced reasoning.

推理ノートには何を記録しますか?

推理ノートには、他のプレイヤーが見せたカードや、自分が推理で確認した情報を記録していきます。各容疑者・凶器・部屋の横に「○」「×」「?」をつけることで、プロセスオブエリミネーション(除外法)によって真犯人を特定できます。効率的に記録することが勝利への鍵です。

同じプレイヤーに何度も推理を提示できますか?

はい、同じプレイヤーに何度でも推理を提示できます。ただし、相手が手札にカードを持っていない場合は答えられないため、戦略的に情報を引き出す必要があります。同じ推理を複数回提示することで、プレイヤーが該当カードを持っていないことを確認できます。

ゲームは平均でどのくらいの時間で終わりますか?

初心者プレイでは15~20分、経験者なら10~15分程度で終了します。プレイヤー数が多いほどゲーム時間は長くなる傾向があります。AI対戦ではAIが素早く判断するため、20分以内に決着することがほとんどです。

複数の容疑者が疑いから除外された場合、どう推理しますか?

除外法を使って、犯人・凶器・部屋を絞り込んでいきます。例えば、容疑者A・B・Cが除外されたなら、残りの容疑者が犯人である可能性が高まります。推理ノートに「×」をつけることで、視覚的に除外情報を整理できます。

オンライン対戦では何人までプレイできますか?

このゲームでは2~6人でプレイできます。2人モードではAIが自動で残りのプレイヤーを担当し、3~6人対戦はAIまたは他のプレイヤーと対戦可能です。プレイヤー数によって戦略が変わるため、異なる人数での対戦を試してみてください。

告発に失敗するとどうなりますか?

告発に失敗したプレイヤーはゲームから脱落し、推理ノートをAIに預けることになります。その後のゲームには参加できませんが、他のプレイヤーの推理の参考にはなります。正確な情報収集と慎重な告発のタイミングが重要です。

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