Nazotoki Cafe Hatena Coffee Shop Osaka Umeda is a puzzle-solving cafe in Umeda, a short walk from Osaka Station, that also serves drinks and food. At reception, you choose a puzzle and order a one-drink item or food, then are shown to a table for two to four people. Puzzles range from beginner-friendly to difficult, and hints are available immediately when you get stuck. The entrance stairs are steep, and cash is not accepted.