1e4...The Friday tournament is 4 rounds of 25+5 in the evening. I was the second seed in the reserve section. Since it's in the evening, I was a little worried about running out of energy and making mistakes.1...d52d4...Okay I swear I have a line for the Blackmar Diemer, I just have to remember it. After the game the opponent said he didn't know much about the BDG either, so, okay! Chess is fun.2...dxe43Nc3Nf63...e5My repertoire teaches this but I didn't want to play something so equal against somebody lower rated, but then again I'm in the Qd8 Scandi... I also didn't fully remember what goes on there.4Bg5Bg45f3?!...I was confused by this but okay. I guess it makes sense -- Nge2 doesn't look great and neither does Be2. But it makes it a true gambit. Black is just better.5...exf36gxf3...The computer treats this and Nxf3 equally (advantage for Black). But you really have to play Nxf3 here as a human -- development is important!6...Bf57Bc4...I'm not sure why I didn't do e6 here. The queen move is just playing for a trap.7...Qd68Qe2Nbd7In retrospect, bad. The knight belongs on d7 with a pawn on c6 in a lot of Scandi lines, but not here, and this isn't a Scandi anyway. Nb5 seemed annoying but it's not so bad.9O-O-OO-O-O9...e69...c610Bxf7...I thought this wasn't great for White despite it equalizing material and mucking with my pawn structure. My plan was e6 but I changed my mind because I thought what followed was good for me. I think in retrospect e6 was better.10...h610...e611.Bxf6I thought about e6 because I saw this was bad for White (and e6 is the best move), but d5 seemed unclear to me. I should've thought more about it.11Bxf6...I wanted to repair my pawn structure and get my bishop out but maybe getting my knight out was better. By the way, note that the kingside knight for white is just going nowhere.11...exf611...Nxf612Re1Nb612...Qxd4Here I didn't like Rd1, but I'm fine after Qf4+. Or just about anything else. A really bad mis-evaluation.13.Rd113d5...I thought this pawn push was just bad. It's just not sustainable.13...Qf4+14Kb1Bb415Be6+...I didn't think much about Kb8 but I should have.15...Bxe616dxe6...16.Qxe6+This is the right way, the pawn is overextended and White is in real trouble if dxe6.16...Bxc3King is going to have trouble now. Knight is hopping in.17bxc3...The king is just wide open now.17...Rhe817...Na4I saw this idea but thought I had to prepare it or something. I don't know what is wrong with me.18e7...This just can't work.18...Rd7I expected Qe6 here.19Nh3...19.Qe6Rxe7My plan.19...Qa420Nf2Nc4I think here my opponent twigged that he was in grave danger.21Ka1Na3Slightly imprecise but I have the winning idea.22Rb1Rdxe723Qd3...23.Ne4f523...Nxc2+24Kb2Re225Qf5+Kb826Qg6Qa3#