Chess Ultra achievements

40.80%
O-O-O
Castle queenside
54.73%
O-O
Castle kingside
55.22%
Checkmate
Win a game
59.70%
Promotion
Advance a pawn to the eighth rank
83.58%
Doubled Pawn
Have two pawns of the same colour on the same file
84.58%
Check
Put an opponent in check
96.02%
Chop Wood
Make a capture or exchange