Strategies for Number Puzzles of all kinds
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Saturday 17-Jun-2017

... by: Paolo Calaresu

I use single and Nishio.
If E1=7 => Nishio contradiction with only basic strategies =>B8≠3,4; B3≠6;B6≠6; C2≠2,5; C3≠2,5; C5≠2; =>solution stte.

Saturday 17-Jun-2017

... by: ray

1. Use only basic strategies and the forcing bi-location cell set method.Start with J1{5679} bi-location cell for 7,tri-location cell for 7 and 9.Progressively
form the 3-element bi-location cell set J1C5 E6,forcing only the run out values for the 1-cell to 3-cell values until J1C5E6 = (9.9,2) which gives the solution.Other bi-location cell set solutions found were: CH5J1 = (9,3,9),
C5J19 = (9,9,5). N.B Using Basic to extreme solutions, J1 = 9 gave a 1-cell
solution2.
2. Using this solution,with only basic strategies,the following non bi-location
cell set solutions were found: H4J19 = (9.9,5), D4e6 H4 = (4,2,9).
Or
3. Progressively select the bi-value and tri-value cells B6,D9 and H2,forcing
only the run out cell values, applying only the basic strategies and Nishio Forcing Chains,until B6D9H2 (7,8,7} which gives the solution.

Saturday 17-Jun-2017

... by: jkl

# 183 to # 250 (1 to 9 becomes):
Rot90°clockwise 0
Renumb: 7 2 1 6 5 9 8 4 3
Columns: 7 8 9 5 4 6 1 2 3
& Rows: 6 4 5 2 3 1 9 7 8
and add 1C8

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