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The bridge walking across a hill

Do you complete the first challenge "The bridge climbing the steps"? The bridge need to climbing each stair at most four hydraulic control cycles. However, this bridge should be moved during only two cycles, and the stairs are higher than the previous.

Walking across a hill means the bridge should be moved to the upper left twice and to the lower left twice.

Believe yourself and have courage to compelet this challenge. Go for it.