I played another game, this time Magnus was 11, should be at IM level
Magnus age 11 was not an IM. As he turned 11 he was about 2090 and when he turned 12 he was mid 2200's. And what you said in a previous post that Magnus age 10 was about 2000-2200, he was probably more like 1900-2000
You can check the FIDE site, I've added the following FIDE rating for the benefit of everyone, however the "title" sometimes is given late, because of bureacracy, while these young players, and I don't know if you ever played one (in my state a 2200 player 14yo, just beat a 2600 GM) are wild and their rating is not really precise, they can be quite stronger than what the rating says (maybe is like growth spur in children!):
At 11 was 2072
At 12 was 2250
At 13 was 2450
2003-Oct 2450 36 2003-Jul 2385 25 2003-Apr 2356 19 2003-Jan 2279 12 2002-Oct 2250 33 2002-Jul 2214 19 2002-Apr 2163 14 2002-Jan 2127 12 2001-Oct 2072 19 2001-Jul 2084 11 2001-Apr 2064 15But then you give Carlsen at 11 the rating he reached when he was 10 years and 10 months, and that was based on his games the months before that. The same thing with Carlsen aged 12 and 13. Maybe a more exact measure of the 11-year-old Carlsen would be his rating when he was around 11½ years old than the one he reached when he was 10 years and 10 months.
I played another game, this time Magnus was 11, should be at IM level
You can check the FIDE site, I've added the following FIDE rating for the benefit of everyone, however the "title" sometimes is given late, because of bureacracy, while these young players, and I don't know if you ever played one (in my state a 2200 player 14yo, just beat a 2600 GM) are wild and their rating is not really precise, they can be quite stronger than what the rating says (maybe is like growth spur in children!):
At 11 was 2072
At 12 was 2250
At 13 was 2450
2003-Oct 2450 36 2003-Jul 2385 25 2003-Apr 2356 19 2003-Jan 2279 12 2002-Oct 2250 33 2002-Jul 2214 19 2002-Apr 2163 14 2002-Jan 2127 12 2001-Oct 2072 19 2001-Jul 2084 11 2001-Apr 2064 15It was not because of bureaucracy that Carlsen became an IM being a 12 y.o.
He made his first IM norm while being 12.