Put an opponent in check
Make a capture or exchange
Have two pawns of the same colour on the same file
Castle queenside
Castle kingside
Win a game
Advance a pawn to the eighth rank
Perform an en passant capture
Deliver a check by two pieces at the same time
Complete all the tutorials
Capture 100 pieces
Deliver checkmate where the King is blocked on both sides by his own Rooks
Place a White Knight on e6
Develop a White King Bishop to b5
Win a tournament
Complete 50% of the chess challenges
Beat an opponent with an Elo rating higher than yours
Create a random online game
Issue an online challenge to a friend
Play a game using the Fischer timer
Using a Knight simultaneously attack the enemy King and Queen
Beat an opponent with an Elo rating more than 75 higher than yours
Win 5 tournaments
Maneuver a pair of Rooks onto your opponent's second rank
Draw a game by stalemate
Win a 32 player tournament
Beat an opponent with an Elo rating more than 150 higher than yours
Beat the computer on Grandmaster difficulty
Complete all the chess challenges
Win 20 tournaments
69245
3371
125
388
318
51
18
1