so it looks like our next two moves are Rd8 and b6. Changing the move order doesnt seem to do much. Pretty much anything novel he can do, he can do regardless of our move.
So if we settle on starting with 11... Rd8 that leaves him the main move
12. Ba3 to which we respond with 12... b6
Other moves that still are in the chess.com database are
12. Qe2; 12. Ba2; and 12. Bb5 - all of which we respond with 12... b6.
If pulls something out of a hat, our responses are mostly the same.
12. h3; g3; Re8; Qc2; Qb3; Bb2; Bd2; Rb1; Ra2; Ra3; Be2; Bd3 - b6
12. Ne1; Nd2 - possibly e5 -- without the knight covering the square, pushing the e pawn early may be beneficial
12. h4; Ng5 - h6? - not sure, but makes sense -- attack g5/prevent the knight from getting to g5
Some blunder moves have obvious captures -
g4 Nxg4; Ne5 Nxe5; a5 Nxa5; d5 exd5; Ba6 bxa6
12. e4 - looks like an interesting pawn gambit, but instead of capturing the e pawn, cxd4 gives black a significant advantage
I believe that covers every possible move after 11... Rd8. Double check any errors and possibly see if e5 makes sense for any other of his possible moves.
Meant to do this earlier, but I was away from my computer. Anyway 10... dxc4 will be the winner. 11. Bxc4 is basically forced, but this will give us ample amount of time to go over our next two moves.
I'll give my opinion on them later, but the moves still in database are 11... b6; Rd8; or e5. Also when looking at lines, consider both his and our 12th move.