DLR Tests are used by many airlines to pick the skilled pilots.
This is fun game that can help you practice.

How to play:
• Imagine a transparent cube with just one red side. On every command rotate the cube in your mind.

• There only 4 possible commands:LEFT, RIGHT, FRONT and BACK.
• To rotate the cube use the bottom edge of the cube as an axis, and tip it over that edge.

Example:
• The red side is the BOTTOM one, command is LEFT, the cube should be tipped over it's left bottom edge and the red side is now the RIGHT side.
• If the second command is FRONT, the cube should be tipped over it's front bottom edge and the red side is still the RIGHT side.
• If the third command is RIGHT, the cube should be tipped over it's right bottom edge and the red side is the BOTTOM side.

Another way: Imagine the cube on a table. And on every command, push that cube until it flips in the direction of the command.