Ball, W. W. Rouse (Walter William Rouse), 1850-1925 · London, Macmillan · leaf 138
e put simultaneously on the board so that no queen canbe taken by any other queen of the same colour. On a board of 6^ cells there is 1 fundamental solution:namely, (246135). The four solutions are superposable. Thepuzzle for this case is sold in the streets of London for a penny,a small wooden… … On a board of 7^^ cells there are 6 fundamental solutions:namely, 1357246, 3572461, (5724613), 4613572, 3162574,(2574136). It may be noted that the solution 1357246 givesby cyclic permutations seven superposable arrangements. On a board of 8- cells there are 12 fundamental solutions:namely,…
Geometry · Cryptography · Ciphers
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