Frequently asked questions
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How is the rating calculated within Chessity?
Chessity uses the standard tables also used by the Chess Federation and the world chess federation FIDE. This system is also known as the ELO rating, invented by the Hungarian physicist Arpad Elo.
We treat each puzzle as if it were a player. If the puzzle is not solved correctly, the puzzle 'wins'. This costs the player rating points, while the puzzle's rating goes up. If the puzzle is solved correctly, the player 'wins' and their rating goes up, while the puzzle's rating goes down.
This way, you always get puzzles at your own level!
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