Student: I can win the game if I play well.
Me: That’s half true.
Chess is a game of mistakes! That doesn’t mean that you shouldn’t press because when you’re playing well there are more chances that your opponent will make mistakes. Here are few interesting examples to test your skill to recognise the mistake.
Anand against Kramnik in 2001
Q: In the given position Anand played 24.bxc4. Is it a mistake?
Solution: Yes, it is mistake. Instead Anand should play Nxe6 followed by bxc4 with the better position, but after 24. bxc4 game was ended in 3 more moves.
24…Nxf4! 25. gxf4 g3!! 26.Nf1
The pawn can’t be taken because of Bc5, which wins the exchange.
If 27.Kxf2 then Bc5 is winning or if Kg2 then Rg8 followed by Bxc4 is winning.
White resigned as he was forced to give up the exchange.
Above was the case of tactical mistake which is relatively easy to recognise. Strategic mistakes can be much harder to see:
Anand against Aronian in 2009
Q: In this position Anand played 12. b3. Is it a mistake?
A: Yes it is, though it doesn’t lose any material directly and has nothing to do with opening preparation. But after 12…Nxd3 Black gets the bishop pair and an attack, so yes it is a mistake.
Here is the rest of the game in case you’re interested.