/jp/ - Otaku Culture

>>15541933
You're talking in retrospect. With all of the hands open, yes, it's clear that Pei is the winning tile, and as the score screen shows it is a baiman hand due to ura. However, we have no way of knowing prior to it happening.

Furthermore, you say you'd rather fold. May I ask how? South has no safe tiles in his hand. West's riichi overflow tile is 4m. This means that he probably has tiles in his hand that are near 4m, or he discarded 4m to get an edge wait. A very brief glance at what we can see tells us the following:

1) 2m, 5m, and 6m are live tiles.
2) Six of the tiles in the 2m-5m vein are visible. Seven tiles in the 5m-8m vein are visible. The ones we can't see are one 2m and one 5m.

This means that making sequences around 4m is very difficult, which in turn means that the chance he's waiting on something around the 4m is higher. Dealing 2m and 5m is out of the question, they're by far the most dangerous because the 2-5-8 vein is almost dry. 6m is also dangerous because there is one 5m unaccounted for, so it could be a 3m-6m edge wait as well. There is also the danger of a 6m-something else shanpon.

Pei is by no means safe, it's also a live tile as well as the dora. But, if all of the tiles in your hand are dangerous, you might as well go with the option that benefits you the most. In this case, that's accepting the baiman tenpai; cutting Pei is the right choice in that situation. The only other tile you could make an argument for is 6m, because 5m, 7m, and 8m are almost all gone, but there's still the danger of 6m shanpon, in which case it's still more dangerous than Pei because the number of waits it can be won off are higher.

>>15171627
He can't win off east. It's pointless. For him to change his rank, he needs 11,000 points on a ron unless third place deals into him. The highest possible value from winning off east is mangan (riichi, chitoi, two ura). If he tsumos, he can get third with a mangan or higher, although that would require haitei, or ura which would give him haneman.

Furthermore, even if he doesn't tsumo, it's possible the game will continue if east is tenpai, giving him another chance to improve his rank.

>>14862481
Drawing 3s after discarding 2s isn't a big backfire with this hand. It can still be used in a 3-5-7 ryankan, for example.

And yes, I am aware of that linked concept, but what you don't seem to notice is that none of the examples given involve discarding tiles that move your shanten count back. The article is about maximizing the ukeire of your 1 shanten hand by discarding overlapping shapes. This doesn't apply to the example hand because you're looking at two kanchan tatsu of 4-6 and 7-9. There's no irrelevant tiles here.