There are 6^2 = 36 possible outcomes when we re-roll the 1 and the 4. We first calculate the number of different outcomes that result in a particular hand and use this to determine the probability of each hand. For example, the probability of rolling a 2 and a 6 is 2/36 since we could roll the 2 and then the 6, or the 6 and then the 2. The probabilities of each of the hands are:

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Hand	Number of Outcomes	Probability	Straight
6 - 2	2	2/36 = 1/18	Large
1 - 2	2	2/36 = 1/18	Large
6 - (not 2)	4 · 2 + 1 = 9	9/36 = 1/4	Small
2 - (not 1 or 6)	3 · 2 + 1 = 7	7/36	Small
no 2 or 6	4^2 = 16	16/36 = 4/9	None

Yahtzee game online for free, Play with buddies. The objective of Yahtzee is to get as many points as possible by rolling five dice and getting certain dice combinations. The game consists of 13 rounds. The round starts by rolling all the dice. After this either score the. Yahtzee is a superset of 3 of a kind, 4 of a kind, full house and chance, but you can also choose small or large straight and will get the normal 30 and 40 points for those. You've already put 0 in the Yahtzee box: In this case you get no 100 point bonus, but you do get a joker, and can choose your move following the rules described above for. Download this game from Microsoft Store for Windows 10, Windows 8.1. See screenshots, read the latest customer reviews, and compare ratings for Yatzy Ultimate Free. Word shouted when something good happens or when you don't know what's going on. Yahtzee is a dice game based on Poker. The object of the game is to roll certain combinations of numbers with five dice. At each turn you throw dice trying to get a good combination of numbers; different combinations give different scores. While luck plays a big role in Yahtzee, strategy makes a significant difference.

Note that a six paired with any other number can occur two ways, but a pair of sixes occurs in only one way. This is why the third and fourth rows have a plus one in the number of outcomes column.

Next, for each of the possible first roll outcomes we calculate the probability of getting a large straight or a small straight on the third roll. For the 6-2 and 1-2 hands we already have our large straight so we are done. For the 6 - (not 2) hand we re-roll the non-2 die. We have a 1/6 chance of getting a two and a large straight, and a 5/6 chance of not getting a 2 and having only a small straight. For the 2 - (not 1 or 6 hand) we will keep the 2,3,4,5 and re-roll one die, giving us a 1/3 chance at rolling a large straight and a 2/3 chance of having only a small straight. In the case where we rolled no 2 or 6 on the second roll, the situation for our third roll is the same as the situation for our second roll, so the above table gives the probabilities of each outcome.

Combining these results we see that the probability of a large straight is

1/18 + 1/18 + (1/4) · (1/6) + (7/36) · (1/3) + (4/9) · (1/18 + 1/18) &asymp 0.267.

The probability of a small straight (but not a large straight) is

(1/4) · (5/6) + (7/36) · (2/3) + (4/9) · (1/4 + 7/36) &asymp 0.535.

The probability of getting no straight at all is (4/9)² &asymp 0.198.

If we re-roll only one die, then on our second roll we have a 1/6 chance of rolling a 2 and getting a large straight. We also have a 1/6 chance of getting a 6 and a small straight. In this case, on our third roll we have a 1/6 chance of rolling a 2 and getting a large straight. However, 2/3 of the time we get neither a 2 or a 6 on our first roll in which case our situation does not change. Therefore our chance of getting a large straight is

1/6 + (1/6) · (1/6) + (2/3) · (1/6) &asymp 0.306

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The probability of getting only a small straight is

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(1/6) · (5/6) + (2/3) · (1/6) = 0.25.

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The chance of getting no straight is (2/3)² = 4/9 &asymp 0.444. So re-rolling only the 4 gives you a slightly higher chance of getting the large straight, but a much lower probability of at least ending up with a small straight. If you only need a large straight then re-rolling just the four is the better strategy, but if a small straight would also be valuable then re-rolling the 1 and the 4 might be a better move.