WORLD'S SMALLEST HARDEST SUPER SUDOKU
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Across
1. Turkish chief officer (4) 5. A subatomic particle (4) 6. Seagirt land (4) 7. An artificial oyster bed (4) ▶
Down
1. Priestly vestment (4) 2. Sudden rush of air (4) 3. A subterfuge (4) 4. Start afresh (4)