Opening matrix

Fifteen first rolls

123456
1
2
3
4
5
6
13
14
15
16
17
18
19
20
21
22
23
24
12
11
10
9
8
7
6
5
4
3
2
1

White moves from 24 toward 1. Black stays put.

Tap a pair

The grid is the two dice. Tap 3–1 first: it makes your 5-point. Each player has rolled one die. If they match, you roll again — doubles never open the game. If they differ, the higher die plays both numbers, and each of the fifteen openings is equally likely. 6–1 and 1–6 are the same opening, so both light up.