The dice notebook
When Do You Use One Die in Shut the Box?
On this website, use one die when every open tile is 6 or lower. If any open tile is 7 or higher, use two dice. Other versions may let you choose, so check the rule before comparing games.
Check the tiles that are still open
With 1, 4 and 6 open, this game rolls one die because each remaining number is at most 6. Their sum is 11, but that does not matter for deciding how many dice to use. A rule based on a remaining sum would give a different answer.
With 1 and 7 open, it rolls two dice. The open 7 requires a total that a single six-sided die cannot produce. This same test applies to both board sizes: a twelve-tile game switches only after every tile from 7 through 12 has closed.
Understand what the switch changes
One die can produce 1 through 6, with one face for each result. Two dice can produce 2 through 12, and some totals occur more often than others. A total of 1 is impossible with two dice. A total of 8 is impossible with one.
The switch therefore changes your available future moves. If 2 and 6 remain open, one die can close the 2 or the 6 separately. It cannot roll their combined total of 8. Whether a particular choice improves your overall outcome needs more analysis than simply counting how many tiles remain.
Do not treat every published rule as identical
The Wikipedia rules overview describes a choice between one and two dice when 7, 8 and 9 are unavailable. That is useful evidence that the familiar one-die stage is not always implemented as a compulsory switch.
Our game makes the switch automatically, and its hints, daily dice and friend rooms follow that rule. A physical set may offer a choice or use another trigger. Read its instruction sheet rather than assuming that a strategy table from another version will transfer unchanged.
Resolve common board states
| Open tiles | Dice here | Reason |
|---|---|---|
| 1, 4, 6 | One | Every tile is at most 6 |
| 1, 7 | Two | 7 remains open |
| 5, 6 | One | The sum of 11 does not control the switch |
| 2, 10 | Two | 10 remains open on the larger board |
The switch applies to your next roll. It does not change the dice total you have already rolled or let you recalculate a move after closing tiles.
Use the right rule when comparing results
A low score under an optional-dice rule is not directly comparable with the same score under a forced-dice rule. Record board size, scoring method and dice choice along with any claimed win rate. The probability guide explains the simpler distinction between a single-roll probability and a full-game win rate.
To practice the switch, start a single-player round. As you close the last high tile, watch the dice count change before your next roll. There is no extra setting to select and no bonus for reaching that stage.
Rules scope: The Little Dice Club rules. Sources and calculation methods. Probability examples are not overall game win rates.