https://beempy.com/sm_challenges shows now the result of the last 1000 played steemmonster challenges. The site is updated every minute (the shown current timestamp is in UTC time).
This site is helpful to organize tournaments, in which manually started challenges are used to find the winner.
https://beempy.com/sm_challenges can be used to check who played and which player won. This is a lot easier than entering all participants manually into the steemmonster battle log and check the results:
Please let me know, if I can something improve :).