Theme: '21
Rules: Subdivide the grid into two areas of connected cells that solve as separate puzzles. The division can only be done along the given bold outlines - no outlined region belongs to more than one puzzle. Given shaded cell does not belong to the grid and is not used by either puzzle. Rules of individual puzzles follow:
Oscillatory: Draw a single non-intersecting loop vertically or horizontally through some cells. The loop must visit each bold outlined region once. In every second region visited along the path of the loop, the loop uses all the cells. And in every other region, it leaves one or more cells empty.
LITS: Shade in some cells such that each outlined area contains exactly four shaded cells that form a tetromino. No 2×2 square can be shaded completely. All shapes must be connected to form a single contiguous group of shaded cells. Identical figures, regardless of rotation and reflection, cannot share an edge.
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