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What will I learn?

This puzzle teaches you how to compare values using a simple condition.

External resources


Learning Opportunities

This puzzle can be solved using the following concepts. Practice using these concepts and improve your skills.


The goal of this puzzle is to safely land the spaceship on the platform. It's an simple introduction to the « Mars Lander - Episode 2 ». Some data is useless and solving this problem only requires a simple condition.

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You have been promoted to commander of the Mars Lander mission ! The goal of the operation is to land an exploration rover on martian ground. Your superiors at NASA expect very much of you for this mission, and you'll have to prove that you have what it takes to become a great intersideral commander. You will have to land the space ship on mars, making sure that the landing is done smoothly.


This easy puzzle is the first in a series of three exercises proposed during the “Mars Lander” past contest. Once solved feel free to try and master the second puzzle « Mars Lander - Episode 2 » on the same topic but with an increased difficulty!