This is a tool to help people play Bamboo Mahjong, where only 1-9 of bamboo tiles are used. It also helps with menzen chinitsu in general.
For now it only checks shanten, and break down the mentsu and toitsu. Next step would be to calculate the expected points.
Visit here to check out.
Shanten and Ukeire calculator is based on Riichi-Trainer under GPL-3.0 License.
Mahjong tile images from Majan Dofu.