Each of the twelve pits starts with four seeds, so 48 seeds are in play. Both stores start empty, and Coral moves first.
This board has two rows of six pits, and each pit starts with four seeds, which is 48 seeds in all. Both stores begin empty, and Coral plays first.
Other versions
Mancala is a family of games, and this one is Kalah. Some boards start with three or six seeds per pit, and some rule sets differ on captures or on who keeps the leftover seeds. Here the rules are those in how to play Mancala, and the total of 48 is also why a draw is possible.
Four seeds make the sixth pit’s first extra turn easy to see, and the strategy guide builds on that.