Is this solo chess puzzle possible?

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Trevor_Carlisle

I was playing solo chess when I came across this puzzle. I tried solving it for ten minutes, but both my brother and I couldn't get it. Are we just missing something or is it really impossible?

I figured the bishop on e1 has to be taken with the knight because it's impossible to take it any other way. But then it's not possible to take the knight on e1, right?

chesshk23

its possible.1.rd3 2.ba5 3.bd8 4.rd8

blepppy
to clear up confusion on #1's post, they meant 1. Rbxd3 2. Bxa5 3. Rxd8 and lastly 4. Bxd8