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It is possible for a Queen to attack all 18 prime numbered squares on a Knight's Tour solution.

Here is one example in which the Queen sits on square #35.
Note the primes are colored red.

37 24 45 4 39 22 47 62
44 5 38 23 46 61 40 21
25 36 43 60 3 20 63 48
6 59 26 35 64 41 2 19
27 30 57 42 1 34 49 12
58 7 54 29 52 13 18 15
31 28 9 56 33 16 11 50
8 55 32 53 10 51 14 17

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  Submitted: 1999-09-02 18:40:00;   Last Modified: 2009-08-20 06:56:50.



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