|Sergash: Cordts was rated 2222 when he played this game, according to Chessbase.|
This game was analyzed with Komodo 9.2 64 bits.
<11.Bc4?! Nbd7 > Better is 11.a3!
<12.Qb3? Ne8?> Again 12.a3 . After 12...h5! Cordts would have had a huge advantage. After he missed that opportunity, his position is slowly degradating.
<16...b5?! 17.Qxb5 > 16...Qe7=
<18...Nf6?! 19.Qc6!> 18...h5!
<20.d6? Re6! > After 20.a3! Carlsen would have had a clear advantage.
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<21.Nxe4?? Bb7 > This is the losing move, of course. There were:
A) 21.Bc4?! Rxd6 22.Qc7 (only move) Qe7
In the end, Cordts missed 27...Bg1! and mate in 10 moves.