Glasses are put in a wooden cabinet and taken from the cabinet. The playing field is a grid inside the cabinet:

Back

Front

The game is played in two modes, putting and taking glasses.

Objective:
Put glasses in the cabinet until the glass counts are zero, then take all the glasses from the cabinet.

Putting Glasses

• When putting glasses you are presented with the type of glass to put in the cabinet, displayed in the top-left
• You put the glass in the cabinet starting from the back and adding more glasses towards the front
• You put the glass in an empty spot or stack it on another glass
• To put a glass tap the spot in the cabinet grid where you want it and it will appear or stack
• You cannot put or stack a glass behind another glass, you have to play from back to front

Taking Glasses

• When taking glasses you are presented with the type of glass to take displayed in the top-left
• You take that type of glass from the cabinet, either a glass itself or a glass at the top of a stack
• To take a glass tap on it, and if it's a stack it unstacks otherwise it disappears
• You cannot take a glass behind another glass, you have to play from front to back
• If the glass to take is the red glass, you can take any glass you like

At each level, more glasses are already in the cabinet, and you are asked to put a wider variety of glass combinations, adding complications.

A little secret, a reward for reading this far: try tapping the Level number.