Guess the chess opening based on a position played by grandmasters.

• A position from a famous chess opening is shown on the board. Type the name of the opening — or start typing to filter from 25 options.
• Each wrong guess steps the board back one full move, revealing an earlier position as a hint.
• Use the ← → buttons (or keyboard arrow keys) to navigate between all hint positions you've unlocked so far.
• The highlighted squares show the last move played in the current position.