Eight answers, and all eight of them lose
Round seven, move 21. The knight jumps into d4 where his bishop, his knight and his queen are all looking at it, and there is no reply that holds the position together.
I checked this one afterwards because at the board it just looks like it drops a pawn, and he thought so too. The engine has eight legal answers at depth 21. The best is taking with the knight at minus 2.17, which keeps the material where it is and leaves him an exchange down in a position with nothing in it. Every one of the four queen moves loses a piece, because Nxe2 comes with check before he gets to do anything. Taking with the bishop is minus 2.50 and the passed pawn does the job instead.
One thing the engine wants on record: pushing the e-pawn first was better, minus 2.75, because it displaces the knight on f3 before the horse arrives. My move is its third. Right idea, second-best order, and it still left him eight losing choices.