On the first turn, the first player reveals 6 tiles. He chooses one and discards another.
The second player then chooses one of the remaining four and discards one.
The third player chooses one and discards the last tile.
The second player will be first player for the next turn.
The second turn is played exactly the same than the first one.
The first player changes each turn.
On the third turn, 2 series of 6 tiles are revealed.
The first player selects one of the series, then picks one of its tiles and discards another. The second player then chooses one of the remaining four in that series and discards one. The last player chooses in that series one and discards the last tile.