Anna, at least he found your face interesting! :)
I too get tired on the last day of a tournament, and I always have. There's no way around it. This happens whether you have a lot of energy or only a little. And as Kasparov said, chess *itself* is mental torture.
solskytz, First of all thanks for detailed coverage of your chess games. I have some opinion to share with you. Your queen blundering move on a winning position shows that it may be due to age factor. I am in my mid thirties and I am facing similar issues.
1. In India we have like 3 game in a day(each 1hr + 30sec increment) and 1hour gap between each game. So all 9 games will be over in 3 days.
2. I am very sharp in first few games but as the tournament progress I am not able to cope up when I have to calculate. This is like 9 hours chess each day for 3 days. I start to play only natural moves and avoid to look for some idea or calculate different variation. This is not the case in first few games :(
3. I find same problem faced by other ageing opponent in the tournament. Infact I prefer higher rated aged person as my opponent rather than lower rated teenage player.
4. In one of the recent tournament I was playing a teenage opponent and he was staring at my face all through the game. He played his first 15 moves in less than 10 mins and I took about 35 mins. After the game which ended in a draw I asked him why he was staring at me like that. He said he was confused as why I was taking so long time to make those opening moves as the position was simple and nothing much to calculate and he lost interest in the game!!!!!
5. I would say playing 9 hours of chess each day for 3 days is a mental torture. Is there any way to prepare mind to cope with this better before such tournaments?