| icon | info |
|---|---|
 | Absolute Pin |
 | Alekhine’s Gun |
 | Back-rank Mate |
 | Doubled Pawn Have two pawns of the same colour on the same file |
 | O-O-O Castle queenside |
 | O-O Castle kingside |
 | Check Put an opponent in check |
 | Checkmate Win a game |
 | Chop Wood Make a capture or exchange |
 | Promotion Advance a pawn to the eighth rank |
 | Underpromote |
 | En Passant Perform an en passant capture |
 | Double Check Deliver a check by two pieces at the same time |
 | Learner Complete all the tutorials |
 | Piece Collector Capture 100 pieces |
 | Epaulette Mate Deliver checkmate where the King is blocked on both sides by his own Rooks |
 | Fool's Mate |
 | Scholar's Mate |
 | Octopus Place a White Knight on e6 |
 | Spanish Bishop Develop a White King Bishop to b5 |
 | Tournament Amateur Win a tournament |
 | Problem Solver Complete 50% of the chess challenges |
 | Elo Beat an opponent with an Elo rating higher than yours |
 | Stranger Danger Create a random online game |
 | Friendly Fire Issue an online challenge to a friend |
 | Bobby Time Play a game using the Fischer timer |
 | Queen Sacrifice |
 | Family Fork Using a Knight simultaneously attack the enemy King and Queen |
 | Elo Elo Beat an opponent with an Elo rating more than 75 higher than yours |
 | Tournament Pro Win 5 tournaments |
 | Blind Pigs Manoeuvre a pair of Rooks onto your opponent’s second rank |
 | Stalemate Draw a game by stalemate |
 | Boden's Mate |
 | Tournament Champion Win a 32 player tournament |
 | Elo Elo Elo Beat an opponent with an Elo rating more than 150 higher than yours |
 | Chess Champion Beat the computer on Grandmaster difficulty |
 | Problem Solved Complete all the chess challenges |
 | Tournament Master Win 20 tournaments |
