Row column scan technique

How to play hard third level Sudoku, game play 9

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This is the 9th game play session at Sudoku third level of hardness. In this game every step in the beginning was hard-going and finding the breakthrough was not easy. We needed to use a new technique for the breakthrough. But when we now know and have used this pattern, we won't forget it in a hurry. In fact we are incorporating this new technique as a routine step in our overall strategy of Sudoku game solving...

Sudoku Third level game play 8

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This is the 8th game play session at Sudoku third level of hardness. In this game we have encountered for the first time a perfect 3 length cycle with 3 digit same subset occurring in all three cells in a column, there were though varieties of cycles and DSA hits throughout the game play...

Sudoku Third level game play 7

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This is the 7th game play session at Sudoku third level of hardness. This game proceeded uninterrupted forming multiple cycles in a row or column and after using the benefits of the cycles reverting back to the basic row column scan. As such no single action in the game could be identified as the game changing turning point action...

Sudoku Third level game play 6

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This is the 6th game play session at Sudoku third level of hardness. We found this game not particularly difficult, perhaps because we have become used to this level of hardness in the game, but we did find a special turning moment where a special construct had to be used to break the final bottleneck...

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