Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studies in Tours of Knight on Rectangular Boards   The author has constructed and enumerated tours of knight having various
magic properties on 4 x n and 6 x n boards. 16 magic tours of knight have been
discovered on 4 x 18 board, 88 on 4 x 20 board, 464 on 4 x 22 board, 2076 on 4
x 24 board, 9904 on 4 x 26 board and 47456 on 4 x 28 board. Magic tours exist
on all boards of size 4 x 2k for k > 8. Quasi-magic tour exists on 6 x 11
board. 8 magic tours of knight have been discovered on 6 x 12 board and magic
tours exist on all boards of size 6 x 4k for k > 2.

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The categories of this paper are: chem-ph
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The categories of this paper are: q-fin
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The categories of this paper are: cmp-lg
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
18
The categories of this paper are: econ
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The categories of this paper are: hep-th
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The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
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The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: bayes-an
15
The categories of this paper are: nucl-ex