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38 of 38 (100%) achievements earned:
Personal Achievements
 

Absolute Pin

Pin a piece against your opponent's King
Unlocked 26 May, 2020 @ 2:04pm

Alekhine’s Gun

Stack two Rooks one behind another in the same file with the Queen at the rear
Unlocked 2 Jun, 2020 @ 3:13pm

Back-rank Mate

Deliver checkmate by a Rook or Queen along a back rank, with the King's escape blocked by friendly pieces
Unlocked 13 Jun, 2020 @ 4:38pm

Doubled Pawn

Have two pawns of the same colour on the same file
Unlocked 26 May, 2020 @ 2:04pm

O-O-O

Castle queenside
Unlocked 27 May, 2020 @ 2:24pm

O-O

Castle kingside
Unlocked 26 May, 2020 @ 2:06pm

Check

Put an opponent in check
Unlocked 26 May, 2020 @ 2:01pm

Checkmate

Win a game
Unlocked 26 May, 2020 @ 2:08pm

Chop Wood

Make a capture or exchange
Unlocked 26 May, 2020 @ 2:04pm

Promotion

Advance a pawn to the eighth rank
Unlocked 26 May, 2020 @ 2:18pm

Underpromote

Promote a pawn to a Rook, Bishop, or Knight instead of a Queen
Unlocked 2 Jun, 2020 @ 3:05pm

En Passant

Perform an en passant capture
Unlocked 26 May, 2020 @ 2:19pm

Double Check

Deliver a check by two pieces at the same time
Unlocked 28 May, 2020 @ 9:41am

Learner

Complete all the tutorials
Unlocked 18 Jun, 2020 @ 1:27pm

Piece Collector

Capture 100 pieces
Unlocked 28 May, 2020 @ 12:44pm

Epaulette Mate

Deliver checkmate where the King is blocked on both sides by his own Rooks
Unlocked 13 Jun, 2020 @ 4:21pm

Fool's Mate

Win a game in three moves
Unlocked 13 Jun, 2020 @ 4:32pm

Scholar's Mate

Win a game in four moves
Unlocked 13 Jun, 2020 @ 4:24pm

Octopus

Place a White Knight on e6
Unlocked 27 May, 2020 @ 2:19pm

Spanish Bishop

Develop a White King Bishop to b5
Unlocked 26 May, 2020 @ 2:07pm

Tournament Amateur

Win a tournament
Unlocked 4 Jun, 2020 @ 12:41am

Problem Solver

Complete 50% of the chess challenges
Unlocked 20 Jun, 2020 @ 12:24pm

Elo

Beat an opponent with an Elo rating higher than yours
Unlocked 27 May, 2020 @ 2:20pm

Stranger Danger

Create a random online game
Unlocked 27 May, 2020 @ 2:29pm

Friendly Fire

Issue an online challenge to a friend
Unlocked 13 Jun, 2020 @ 4:02pm

Bobby Time

Play a game using the Fischer timer
Unlocked 28 May, 2020 @ 11:01am

Queen Sacrifice

Sacrifice the Queen then go on to win the game
Unlocked 26 May, 2020 @ 2:08pm

Family Fork

Using a Knight simultaneously attack the enemy King and Queen
Unlocked 13 Jun, 2020 @ 4:07pm

Elo Elo

Beat an opponent with an Elo rating more than 75 higher than yours
Unlocked 27 May, 2020 @ 2:20pm

Tournament Pro

Win 5 tournaments
Unlocked 20 Jun, 2020 @ 4:38pm

Blind Pigs

Manoeuvre a pair of Rooks onto your opponent’s second rank
Unlocked 26 May, 2020 @ 2:07pm

Stalemate

Draw a game by stalemate
Unlocked 28 May, 2020 @ 7:54am

Boden's Mate

Deliver checkmate by two crisscrossing Bishops, with the King's escape blocked by friendly pieces
Unlocked 13 Jun, 2020 @ 5:02pm

Tournament Champion

Win a 32 player tournament
Unlocked 11 Jun, 2020 @ 7:03am

Elo Elo Elo

Beat an opponent with an Elo rating more than 150 higher than yours
Unlocked 2 Jun, 2020 @ 2:56pm

Chess Champion

Beat the computer on Grandmaster difficulty
Unlocked 14 Jun, 2020 @ 4:49pm

Problem Solved

Complete all the chess challenges
Unlocked 20 Jun, 2020 @ 1:22pm

Tournament Master

Win 20 tournaments
Unlocked 20 Jun, 2020 @ 5:01pm