Just to explain what has stayed the same for 2.0 and 3.0 release: Quite A Box Of Tricks is an example of how to modify the csv generator. Support for reading both valid and invalid data.
The rules But there is a question: since the positions are ordered, we can consider that each queen move itself as a rule, that is we can propose from column to column in the same direction. If we apply this rule to the first column, then we get 8 possible solutions, these solutions are ordered because of the x columns that will be filled, who they are ordered as well. And so we have 8 possible positions, now we look for the second position and we repeat the same operation: we select one queen from each column to find 96 (8*8) possible solutions, that are ordered and unique.
What is Quite interesting This software has one purpose: to have all solution to the 8-queens problem. I could make it build bitboards, but we don't really need all solution when you are looking for just one.
Quite A Box Of Tricks is available for download. This is a fully working version, which will mark your work with a largeX as long as it is run in demonstration mode. If you would like to test the software without the X, please contact email@example.com for a temporary license number.
The problem of finding all solutions to the 8 queens problem can be quite computationally expensive, as there are 4,426,165,368 possible arrangements of eight queens on an 8×8 board,[a] but only 92 solutions. It is possible to use shortcuts that reduce computational requirements or rules of thumb that avoids brute-force computational techniques. For example, by applying a simple rule that chooses one queen from each column, it is possible to reduce the number of possibilities to 16,777,216 (that is, 88) possible combinations. Generating permutations further reduces the possibilities to just 40,320 (that is, 8!), which can then be checked for diagonal attacks. d2c66b5586