This is xKime, aka Kimecchi. Just another online mahjong player/writer from the depths of Tenhou.net, Janryuumon, RonRon, Toupaiou, Saki’s website, and pretty much any other mahjong playing system you can find out there, trying to improve his level and learning on the way. Not godly, not completely idiotic, going up one step at the time. This time, I come to talk to you about 牌理 or “tile efficiency.” From the very basics, going into more delicate problems. A great skill to have at the time you encounter a “What Would You Discard” problem.
Part 2: http://www.osamuko.com/tile-efficiency-101-part-2/
Part 3: http://www.osamuko.com/tile-efficiency-101-part-3/
Part 4: http://www.osamuko.com/tile-efficiency-101-part-4/
Part 5: http://www.osamuko.com/tile-efficiency-101-part-5-climaxing/