I played this game very accurately today https://lichess.org/hJl4KPBI/white#0
https://lichess.org/hJl4KPBI/white#0
We don't use this kind of maths in our daily lives, but if you want to become an engineer or work with nanotechnology. (a+b)^2 may be useful.
https://lichess.org/YYwdE6Je#69 7 Average centipawn loss. The time you take to move is almost the same for every move. You cheated.
Barn=Child
Great Britain Classroom Speed I do not know
Open my eyes.
Close my eyes.