2 Ways i would do it.. Either
Send the SE steem back to my steem account then to binance and swap to hive via bnb and then send the hive to your hive account.
Or if you don't have access to binance
Exchange the SE steem to DEC then pull the dec into your Splinterlands account. Then send from your Splinterlands account to Hive engine and change back to hive.
Maybe someone knows another way?
Dear @dune69, thank you for your answer, but i am looking for directly transfer, as far steem and hive engines are drive by the same staff, i do not understand why it is not so easy as it could be...