for those interested in the different ml methods attempted for the challenge, many of the top kagglers in this contest posted rundowns of their solution [0].
for those interested in kuronet [1] and the competition alex gave a presentation here (en, [2]) as did tarin (ja, [3]).
for those interested in classical japanese literature, you can see the tools they've built here [4]. tarin is also very active on twitter [5].