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Couple of days ago i was playing online and started with the following hand, i was not East and the Dora indicator was B1 (making B2 the dora):

B1-B2-B2-B2-B7-C2-C3-C4-C6-C8-D5-D6-D7.

Starting with 3 Dora\'s was lucky, but there it didn\'t stop, my first pick was the C7! Naturally i claimed Dabaru Riichi and discarded B7.

I also was lucky enough to ron on the B3 (was waiting with B1-B2-B2-B2 so my waits were B1 or B3). I got awarded:
Daburu Riichi, 2 fan
Doras, 6 fan (talk about lucky the ura dora indicator was also B1)
And Pinfu, 1 fan.

Alltough i didn\'t mind the latter, i was a bit surprised to get Pinfu. It does make a bit sense, i always thought that pinfu is translated to a 0 points hand and because of the multiple waits i can\'t claim edge wait (or could i? makes no sense, but if i wanted it too, could i claim edge wait?). But i always associated pinfu to a open ended chow wait (eg B2-B3).

So the questions:
1) Could i claim edge wait if i wanted to for some reason in this scenario?
2) Was it correct i got awarded Pinfu?

Thanks in advance.

You can\'t choose to be in single edge, double edge or single tile wait unless you have enough overlap to make that case. (something monstrous like 3334445599RRR)

4555 => 3,6 double edge, 4 single tile wait. 2 fu pointts only for the 4.

1222 = \"0\", 3 single edge (zero never counts as a valid tile), 1 single tile. Both the 1 and 3 would get 2 fu for them.

In this case, it\'s wrong to be able to score pinfu since the hand says you can only claim pinfu on a \"flat hand\", the only exception being the 2 fu for tsumo which can be ignored.

The irony of it all is that in this case, the score wouldn\'t change from 8 to 9 han. But yes, it\'s wrong and can potentially affect other games.

1) 2 fu from the edge wait (as Senechal gladly explained above)
2) wrongly awarded pinfu