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# This puzzle is solvable
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9
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1 2 3 4 5 6 7 8 9
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32 33 34 35 36 37 38 39 10
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31 56 57 58 59 60 61 40 11
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30 55 72 73 74 75 62 41 12
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29 54 71 80 78 76 63 42 13
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28 53 70 79 77 66 64 43 14
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27 52 69 68 65 47 46 44 15
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26 51 50 49 67 21 19 45 16
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25 24 23 22 48 20 0 18 17
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