Abacus puzzle

Pick a model. Tap a rod to grab its top bead, then tap another rod to drop it — or drag and drop the bead directly. Repeat until your abacus matches the model exactly.

Pick a model to reproduce

• #11↓
• #21↓
• #33↓
• #43↓
• #54↓
• #64↓
• #74↓
• #85↓
• #95↓
• #105↓
• #115↓
• #127↓
• #137↓
• #147↓
• #158↓