I once built EGT for Shatranj taking account of the baring rule, but my EGT generator only handles up to 5 men. There do exist 6-men DTZ ('syzygy') tables, though, which specify the quickest path to a winning conversion, which in this case should be capture of one of the black Knights. It should be possible to then look up the resulting position in a 5-men table that takes account of baring, to see if there are faster ways to win that under Shatranj rules.
I once built EGT for Shatranj taking account of the baring rule, but my EGT generator only handles up to 5 men. There do exist 6-men DTZ ('syzygy') tables, though, which specify the quickest path to a winning conversion, which in this case should be capture of one of the black Knights. It should be possible to then look up the resulting position in a 5-men table that takes account of baring, to see if there are faster ways to win that under Shatranj rules.