Added Kong

Extend an exposed pung into a kong.

Concept

Upgrade an open triplet with the fourth tile.

An added kong happens when you already have an open triplet and draw the fourth matching tile from the live wall on your turn.

At that point, you may add that fourth tile to the open triplet and declare Kong. Then you draw a supplement tile.

Visual example
Concealed hand
Open meld area
Open 5 Character triplet, plus the fourth 5 Character which you just drew to your concealed hand
Rule in plain English

Open triplet first.

An added kong upgrades your existing open triplet with the fourth tile.

Interactive check

Can an open sequence plus a matching tile become an added kong?

Not complete
Takeaway

An added kong upgrades your existing open triplet with the fourth tile.

This is the kong type that can be robbed.