Yahtzee rules
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Contents

1. Disclaimer
2. Game rules
3. MSX game instructions

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1. Disclaimer

This game was originally puslished on MSX Computer Magazine, Netherlands and published by https://msxcomputermagazine.nl/.
The original language is dutch and was translated into english by MarMSX.

Also, the game name was an incorrect "Yathzee" and fixed to "Yahtzee".

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2. Game rules

Source: http://en.wikipedia.ogr/wiki/Yahtzee

The game consists of a number of rounds. In each round, a player gets three rolls of the dice, although they can choose to end their turn after one or two rolls. After the first roll the player can save any dice they want and re-roll the other dice. This procedure is repeated after the second roll. The player has complete choice as to which dice to roll. It is possible to re-roll both dice that were or were not rolled before.

The Yahtzee scorecard contains 13 different category boxes and in each round, after the third roll, the player must choose one of these categories. The score entered in the box depends on how well the five dice match the scoring rule for the category. Details of the scoring rules for each category are given below. As an example, one of the categories is called Three of a Kind. The scoring rule for this category means that a player only scores if at least three of the five dice are the same value. The game is completed after 13 rounds by each player, with each of the 13 boxes filled. The total score is calculated by summing all thirteen boxes, together with any bonuses.

The Yahtzee scorecard contains 13 scoring boxes divided into upper and lower sections.

Upper section

In the upper section there are six boxes. The score in each of these boxes is determined by adding the total number of dice matching that box.

Catg 	Descriptions 		Scores 					Examples
Aces 	Any combination 	The sum of dice with the number 1 	1 1 1 3 4  scores 3
Twos 	Any combination 	The sum of dice with the number 2 	2 2 2 5 6  scores 6
Threes 	Any combination 	The sum of dice with the number 3 	3 3 3 3 4  scores 12
Fours 	Any combination 	The sum of dice with the number 4 	4 4 5 5 5  scores 8
Fives 	Any combination 	The sum of dice with the number 5 	1 1 2 2 5  scores 5
Sixes 	Any combination 	The sum of dice with the number 6 	2 3 6 6 6  scores 18

If a player scores a total of 63 or more points in these six boxes, a bonus of 35 is added to the upper section score. Although 63 points corresponds to scoring exactly three-of-a-kind for each of the six boxes, a common way to get the bonus is by scoring four-of-a-kind for some numbers so that fewer of other numbers are needed. A player can earn the bonus even if they score a "0" in an upper section box.

Lower section

The lower section contains a number of poker-themed categories with specific point values:

Categories 	Descriptions 			Scores 			Examples
Three Of A Kind At least three dice the same 	Sum of all dice 	2 3 4 4 4  scores 17
Four Of A Kind 	At least four dice the same 	Sum of all dice 	4 5 5 5 5  scores 24
Full House 	Three of one number 		25 			2 2 5 5 5  scores 25
		and two of another
Small Straight 	Four sequential dice		30 			1 3 4 5 6  scores 30
		1-2-3-4, 2-3-4-5, or 3-4-5-6 	
Large Straight 	Five sequential dice		40 			1 2 3 4 5  scores 40
		1-2-3-4-5 or 2-3-4-5-6
Yahtzee 	All five dice the same 		50 			1 1 1 1 1  scores 50
Chance 		Any combination 		Sum of all dice		1 1 3 3 5  scores 13

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3. MSX game instructions

Intructions by MarMSX

1. First you must press 1-4 to select the number of players.
2. The game starts with the first roll already done.
3. Press 1-5 to select which dice you want to keep. You may select some up to all. Press 0 to clear marks.
4. Press space bar to roll the dice again.
5. The dice marked to keep loose theis marks after roll. So, select again the dice to keep.
6. You may end your round anytime by pressing "i".
7. After the last roll, the game ask you which box you want to score. Move the marks using the up/down cursors and press right to select one option. After selected, you cannot regret your choice.
8. The game ends when all boxes are completed.

