Doc's EXTREME Daily Sudoku
21 December 2021     
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Two String Kite Empty rectangle (hinge)
XYZ Wing XYZ Wing
Discontinuous Nice Loop Discontinuous Nice Loop
Grouped discontinuous nice loop Discontinuous Nice Loop
Discontinuous Nice Loop Hidden rectangle
Empty rectangle (hinge) Finned X wing
Finned Swordfish Empty rectangle (hinge)
Finned X wing Finned Swordfish
Finned Swordfish Discontinuous Nice Loop
Group AIC A.I.C
Discontinuous Nice Loop Group AIC
Discontinuous Nice Loop XY Wing
XY Wing X wing
Jellyfish
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