PR 2024 R4 - Word & Object Placement (26th Apr - 2nd May) Score Discuss
PR 2024 R5 - Shading & Regions (3rd - 9th May) has started Discuss
Understanding the logic with an example7 posts • Page 1 of 1 • 1
@ 2013-08-24 11:33 PM (#12437 - in reply to #12435) (#12437) Top

ashwinparadkar



Posts: 9

Country : India

ashwinparadkar posted @ 2013-08-24 11:33 PM

Thanks a lot Prasanna for replying :)

The 1 in box 5 was wrongly written. It was for the 2 places I circled in row 7. I want to know how did you derive that 3 would be in R9c4. Coz 3 can also go in R9C6.
@ 2013-08-24 11:51 PM (#12438 - in reply to #12433) (#12438) Top

FoxFireX




Posts: 35
20
Country : United States

FoxFireX posted @ 2013-08-24 11:51 PM

Once you've determined the 1 in R7 has to be in C4 or C5, 3 is the only number left that could possibly be in R9C4. 1, 4, 5, 6, and 8 are already present in the box, 2 and 9 are already in the column, and 7 is already in the row. Even though the 3 isn't eliminated from R9C6, everything but the 3 is eliminated from R9C4.
@ 2013-08-25 6:58 PM (#12440 - in reply to #12438) (#12440) Top

ashwinparadkar



Posts: 9

Country : India

ashwinparadkar posted @ 2013-08-25 6:58 PM

Got it now! Thanks for explaining in so detail. That really really helps. I somehow missed that logic. I now recollect having solved puzzles using this technique. Maybe I am out of practice or just becoming non-intelligent. :D
Understanding the logic with an example7 posts • Page 1 of 1 • 1
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