Yahtzee Dice Roller
Roll 5 dice for Yahtzee online - Interactive dice roller with re-roll mechanic and score calculator
Roll dice for Yahtzee online with our interactive dice roller. Yahtzee is the world's best-selling dice game with over 50 million copies sold. Our roller includes the classic re-roll mechanic, built-in score calculator, and turn history to help you play Yahtzee digitally with cryptographically secure randomness.
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About Yahtzee Dice Roller
Roll dice for Yahtzee online with our interactive dice roller. Yahtzee is the world's best-selling dice game with over 50 million copies sold. Our roller includes the classic re-roll mechanic, score calculator, and turn history to help you play Yahtzee digitally.
Score Calculator: Our built-in calculator shows all possible scoring options for your current dice, helping you make the best strategic decision. Click dice to hold them between rolls, then check the score helper to maximize your points.
How to Use the Yahtzee Roller
[STEP 1] Start Your Turn
Click the "START TURN" button to roll all 5 dice simultaneously. The dice will show random values from 1 to 6, generated using cryptographically secure randomness.
[STEP 2] Hold Dice
After your first roll, click on any dice you want to keep. Held dice will show a green checkmark and won't be re-rolled. Strategy is key - decide which dice give you the best chance at a high-scoring combination.
[STEP 3] Re-Roll Remaining Dice
Click the "RE-ROLL" button to roll only the unheld dice. You can do this up to 2 more times per turn for a total of 3 rolls. The score calculator updates after each roll to show your best options.
[STEP 4] Check Score Calculator
View all possible scoring options in the score calculator panel. It shows points for Ones through Sixes, Three/Four of a Kind, Full House, Small/Large Straight, Yahtzee (50 pts), and Chance. Choose your best scoring category and click "NEW TURN" to start fresh.
Yahtzee Roller Best Practices
- _ True Randomness - Uses cryptographically secure random number generation for fair, unpredictable dice rolls equivalent to physical dice
- _ Hold Mechanic - Click dice to hold them between rolls (up to 3 rolls per turn). Held dice are marked with a green checkmark
- _ Score Calculator - See all possible scoring options for strategic decisions. The calculator updates automatically after each roll
- _ Turn History - Track your rolls and scores throughout your game. History shows your last 20 turns with best possible scores
- _ Fair Play - Perfect for online Yahtzee games with friends. Each roll is independent and truly random
- _ Official Rules - Follows classic Yahtzee rules with 5 dice and 3 rolls per turn. Score calculator uses standard Yahtzee scoring
Yahtzee Scoring Guide
Pro Tip: A Yahtzee (all 5 dice showing the same number) is worth 50 points and is the highest-scoring single roll. The odds of rolling a Yahtzee in one roll are 1 in 1,296!
Yahtzee Dice Rolling Algorithm
Our Yahtzee roller implements a cryptographically secure random number generator with stateful turn management. The algorithm ensures each die roll is independent and uniformly distributed, with support for selective re-rolling based on player strategy.
// Yahtzee dice rolling algorithm with hold mechanic
Algorithm: Interactive Yahtzee Dice Roller with CSPRNG
Turn Initialization:
- Set rolls_remaining = 3
- Initialize dice_state = [empty, empty, empty, empty, empty]
- Initialize hold_state = [false, false, false, false, false]
On Each Roll:
1. Identify Dice to Roll:
- Count unheld dice where hold_state[i] = false
- Let num_to_roll = count of unheld dice
2. Generate Random Values:
- For each unheld die position i:
* Generate random integer R ∈ [1, 6] using CSPRNG
* Set dice_state[i] = R
- Held dice remain unchanged
3. Update State:
- Decrement rolls_remaining by 1
- Preserve hold_state for next roll
4. Calculate All Possible Scores:
- Upper Section (Ones-Sixes):
* For each number n ∈ [1,6]:
Score[n] = Σ(dice where value = n) × n
- Three of a Kind:
* If any value appears ≥3 times: sum all dice
* Else: 0 points
- Four of a Kind:
* If any value appears ≥4 times: sum all dice
* Else: 0 points
- Full House:
* If (3 of one value AND 2 of another): 25 points
* Else: 0 points
- Small Straight:
* If dice contain [1,2,3,4] OR [2,3,4,5] OR [3,4,5,6]: 30 points
* Else: 0 points
- Large Straight:
* If dice = [1,2,3,4,5] OR [2,3,4,5,6]: 40 points
* Else: 0 points
- Yahtzee:
* If all 5 dice show same value: 50 points
* Else: 0 points
- Chance:
* Sum of all 5 dice (always valid)
Hold/Unhold Mechanic:
- Player clicks die at index i
- Toggle: hold_state[i] = !hold_state[i]
- Held dice immune to re-rolling
New Turn:
- Record current dice and best score to history
- Reset all state variables
- Clear dice_state and hold_state
Security Properties:
• Uniform Distribution: Each die face [1-6] has exactly 1/6 probability
• Independence: Each roll is independent of previous results
• Cryptographic Strength: Uses OS-level entropy sources
• No Predictability: Future rolls cannot be predicted from past results
Probability Analysis:
• Yahtzee (5 of a kind) odds: 1 in 1,296 per roll
• Large Straight odds: 1 in 162 per roll
• Small Straight odds: 1 in 72 per roll
• Full House odds: 1 in 108 per roll
• With 3 rolls and strategic holding: odds improve significantly
API Access for Developers
Roll Yahtzee dice programmatically using our free REST API. Generate 5 random numbers from 1-6 using the dice endpoint with D6 dice type. Perfect for building Yahtzee games, probability simulators, or educational tools.
Response includes an array of 5 dice values, metadata with generation timestamp, and cryptographic verification. No authentication required for API access.