Three colors sequences is prior to Straight

For Beginner 16 

Answer

Commentary

Three colors sequences  > Straight　

This is the scene that no parents and a big hand is needed.

Both Three sequences and Straight are the same in terms of two roles. 

But there is a clear difference between them,

Whether it has the option of all simples.

Therefore, when you want a big hand, the basic rule is to aim for three colors sequences.

In the case , Discarding 1p is advantageous in terms of the number of cards accepted, so you didn't  think there is much doubt, but please keep it in mind.

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