Go-board memory

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Stones sit on the grid intersections. Study for as long as you like, then select Hide stones. Choose Black or White and tap an intersection to place a stone. Tap it again with the same color selected to remove it, or use Erase. A different selected color replaces the stone. Undo restores your last edit.

These patterns use short legal move sequences inspired by common local Go shapes, including extensions, connections and nearby responses. They are authored practice examples, not professional game records or a Go strategy test.

Place the same number of stones as the original, then check the board. A stone earns one point only when both its position and color match.

Keyboard: Tab to the board, then use arrow keys and Enter or Space. Home and End move to the first or last intersection in a row. The letter keys B, W and E select black, white and the eraser. These shortcuts work while the board has focus. This practice relies on seeing stone positions.

Only completed five-board sessions are saved to statistics. Active time excludes background tabs. Earlier random-pattern results are kept separately.