That position can't occur, as X moves first. The Kata description says we may assume the board is valid.

It's certainly more intricate than it needs to be ;)

The "View Solution" window that pops up under comments in the various discourse sections doesn't properly html escape solution code.

Such a thing might lead to an XSS attack, though I haven't poked at it.

Like any resource that suggests using regex to parse HTML, this kata needs to be taken out behind the barn and shot. It is ill-concieved and badly implemented.

My solution is fairly inelegant, but it uses xml.etree.ElementTree - a pythonic and appropriate tool for parsing HTML.

The argument "list" hides a built-in function - not good practice.

Nice kata, interesting to see how people approach this. =)

It might be helpful to clarify in the description that all the test cases will be in the range 1-3999 (the range expressible in basic roman numerals).

Otherwise, a nice Kata which handily illustrates how bonkers roman numerals are =)

Nice when a problem simplifies down to ~nothing. =D

This is a nice Kata. It seemed natural to view it as a classic topological sorting problem on the directed graph implied by the triplets.