Normal sudoku rules apply. Shade some cells in the grid such that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected; and no 2x2 area is fully shaded or fully unshaded. Candles illuminate the grid and must be unshaded. A digit on a candle is equal to the number of consecutive unshaded cells (including itself) the candle sees in its row and column
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