Puzzle 4 (10 nodes)

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To solve a puzzle, you need to swap or assign the numbers to the arrows so that numbers on all the arrows entering each node are LESS than numbers on all the arrows leaving that node.

To swap numbers between two arrows, click or tap the number on one arrow and click or tap the number on the other arrow.

An arrow "enters" a node when its head touches that node, and an arrow "leaves" a node when its nock touches that node.

The more black arrows you have, the closer you may be to solving the puzzle.

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