Doc's EXTREME Daily Sudoku
12 January 2022     
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Hidden double X wing
Unique side Hidden rectangle
Empty rectangle (hinge) Turbot fish
Swordfish X wing
Two String Kite Hidden rectangle
Empty rectangle (hinge) Turbot fish
Swordfish Hidden rectangle
A.I.C XY Wing
XY Wing XY Wing
Hidden rectangle XY Wing
XY Wing BUG+1
W wing
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