Doc's EXTREME Daily Sudoku
22 November 2021
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XY Wing
Unique side
W wing
Hidden rectangle
XYZ Wing
Unique side
W wing
Hidden rectangle
XYZ Wing
XY Wing
W wing
Hidden rectangle
W wing
Hidden rectangle
Hidden rectangle
Two String Kite
Empty rectangle (hinge)
Empty rectangle (hinge)
Discontinuous Nice Loop
Discontinuous Nice Loop
XY Wing
Discontinuous Nice Loop
Hidden rectangle
Grouped discontinuous nice loop
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