Right, but the most funny was that I saw that rook threatening my queen for a while, I was careful about that for a while, but I just forgot to look after "her" during one move. Only one move, and see what happened

Yeah chess is like Judo, one second not having attention and.... I once lost a Judo competition because I lost attention during 1 second... grr.
10.Bf4 Na5
11.Qe2 c5
12.Rad1 f5
13.exf5 exf5
14.dxc5 Bxc5
15.Bc4+ NxBc4
16 if you play Rxd8, then, it has to be Rxd8
and if you play again Qxc4+ then I'll move my king logically Kh8
maybe it depens on the order you'll play that. Anyway, I nearly completed my mission, i.e. surviving 20 moves against you

Unless you mate me within 3 moves. Then, I'll see, maybe I'll resign, since it's quite useless going on, the game has become too unbalanced now. But well, I'll fight till the end

Then maybe we can have another game.