abcdefghi
A5 9 2 1
B4 56
C8 9 3 5
D 87 25
E654 82
F 1568497
G1 82 5
H7 68 3
I 4 7 8
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Progress
Finding twins is a laborious process to do manually. SudokuDragon will locate these for you automatically. You need to scan the grid and note down all the possibilities for each square.

Running Running. Press the Stop button to pause the guide. Help page.
Welcome to this Sudoku Dragon guide. Use the bar alonside the grid to control it. The buttons let you Stop; Play; Rewind back to start; Go back a step; Go forward a step.