| Blank | 21 |
| Ace | 28 |
| Deuce | 35 |
| Trey | 42 |
| Four | 49 |
| Five | 56 |
| Six | 63 |
Shuffling and Cutting. Dominoes are provided with a small brass pin in the centre of the face, which enables one to spin them round, push them about on the table, and so to shuffle them thoroughly. There are three methods of determining who shall have the first play, or set, as it is called: 1. The player having the higher double; or, failing any double in either hand, the heavier domino, that is, one with a greater number of pips on its face than any held by his adversary. 2. One player selects any two dominoes, face down, and pushes them toward his adversary, who chooses one. Both are then turned up, and whichever gets the lighter domino has the first set. 3. Each player draws a domino, face down, and the one getting the lower double sets first. If neither draws a double the lighter domino sets.
The dominoes are then shuffled again by both players, and each draws the number of pieces required by the game they are about to play. The dominoes remaining on the table are left face down, and form the stock or bone-yard. Each player should sort his dominoes into suits, and either leave them standing on their edges on the table with their faces toward him, or hold them in his hand. Few persons can hold more than six dominoes in this way, so the seventh is left upon the table, or is the first one set.
Matching. All games of dominoes are based upon the principle of matching, or following suit; which requires that each domino played shall belong to the same suit as one of the exposed ends of the line of dominoes already played, and exposed upon the table. In playing a domino, it must be so placed that the end of it shall match and adjoin the exposed end of the line; a six being played to a six, a four to a four, and so on. Each domino, as played, is laid face upward on the table, the ends abutting, and doublets being laid across, or at right angles to the line.
The principal games are divided into two classes; those in which the object is to block a player, so that he cannot follow suit, and those in which the object is to make the ends of the line some multiple of five or three. The Block Game will be described first.
THE BLOCK GAME. Each player draws seven dominoes, and the one whose turn it is to set lays down any domino he pleases. If a good player, he will select one of his longest suit, especially if he has three or more, and his object will be to get the line back to his suit as often as possible. If a player had to set with the hand of dominoes shown in the foregoing diagram, he would select the 5-0, because he has four of the 5 suit, and three of the 0 suit. This would compel his adversary to play some domino having upon it a 5 or a 0. Let us suppose this adversary to hold the following dominoes: 6-6, 6-3, 6-1, 6-0, 5-1, 5-0. He would of course play the 6-0, in order to bring the line round to his long suit of 6’s. As this would close the blank end of the line, the first player, whom we shall call A, would have to play on the 5 end, as he has no 6. In order to get the line back to his second longest suit, the blanks, he would play the 5-2, hoping to play 2-0 next time. His adversary, B, would play on this end if he could, but being unable to do so, he gets rid of his heaviest domino, playing the double six. A plays 2-0, and B should now bring in his suit of aces by playing 6-1, which would win the game; but for the sake of illustration we shall suppose that he foolishly plays 6-4. A plays his double four, and the dominoes on the table present the following appearance:—
B, having neither 4 nor 0 on any of his remaining dominoes, says: “Go,” which signifies that he is blocked, and cannot play. A can now play at either end, and with either of two dominoes; but it would be bad policy to play the 4-5, because his adversary might be able to play to the 5; but it is a certainty that he cannot play to either 0 or 4. If A plays the 4-5, B gets rid of all his dominoes before A can play again. If A plays the 4-0 on the blank end, he will have to play again with his 4-5; but if he plays it on the 4 end he blocks himself.
Whether to block the game or not depends on the probable comparative value of the dominoes held by A and B. If A blocks the game by making both ends blank, both players show their remaining dominoes, and the one with the greater number of pips loses as many points as he has pips in excess of the other player. In order to judge whether to block or play, it should be remembered that as there are 147 pips in the entire set, the average value of each domino will be 5¼. If A blocks the game, he will have 17 pips left in his hand, which is above the average value of two dominoes; but his adversary will have four dominoes to count, and it is probable that they will be worth about 21 points. The fact that the seven dominoes already played are 13 pips above the average will reduce the probable value of B’s dominoes to about 20. On the other hand, A knows that B has no blanks, which would slightly increase the weight of B’s dominoes.