football2_dynamic, a Python code which counts the number of ways a given particular score can be achieved in football, respecting the order of events.
To be clear, this code only considers the score of one team. Moreover, in reaching a score, the sequence in which points were made is considered significant. Thus, the two sequences 6 + 3 and 3 + 6, which both achieve a score of 9, and contain the exact same values, are counted as different ways of doing so. They certainly would be experienced differently in live action.
Note that the reference, from the Riddler section of the Five Thirty Eight web site, does not count 6 + 3 and 3 + 6 as different ways of scoring 9. Also, as the Riddler puzzle is posed, it is not possible to get a score of 1 point for a one point safety (returned conversion) after the other team scores a touchdown. The code football_dynamic.py includes that possibility.
For instance, to get a score of 14, there are 63 ways, if we ignore the order in which opportunities are achieved.
The computer code and data files described and made available on this web page are distributed under the MIT license
football2_dynamic is available in a Python version.
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