Strategies for Number Puzzles of all kinds
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Saturday 15-Apr-2017

... by: rikroeger

i use single and Nishio

6<>r5c5 because 6=r5c5-->5=r1c3-->2=r1c5-->8=r2c5-->6=r2c6-->7=r2c7-->=r1c7
4<>r5c1 because 4=r5c1-->7=r4c6-->6=r5c3-->1=r6c4-->6=r6c6-->8=r6c8-->3=r7c2--> -->=r1c7
4<>r4c3 because 4=r4c3-->4=r2c5-->1=r3c9-->1=r4c5-->8=r4c6-->=r3c8
8<>r3c4 because 8=r3c4-->2=r1c5-->6=r1c7-->6=r2c5-->4=r3c6-->7=r3c9-->4=r4c5--> -->6=r4c6-->2=r4c7-->8=r5c1-->=r1c9
1<>r3c2 because 1=r3c2-->6=r5c3-->1=r6c4-->6=r6c9-->6=r7c4-->1=r7c5-->5=r7c8--> -->4=r8c1-->5=r8c3-->=r1c5
7<>r3c2 because 7=r3c2-->4=r3c6-->7=r4c6-->3=r6c6-->8=r6c8-->=r1c7
1<>r2c2 because 1=r2c2-->9=r1c1-->5=r1c3-->=r2c3
5<>r2c1 because 5=r2c1-->8=r1c1-->9=r1c4-->4=r3c2-->=r1c5
2<>r1c4 because 2=r1c4-->4=r3c6-->9=r4c8-->3=r5c3-->8=r5c4-->7=r5c7-->8=r6c1--> -->=r2c3
7<>r1c4 because 7=r1c4-->6=r4c3-->7=r5c7-->3=r6c6-->8=r6c8-->=r1c1
2<>r1c3 because 2=r1c3-->4=r2c5-->7=r3c6-->6=r4c3-->1=r4c5-->4=r4c6-->7=r4c7--> -->9=r4c8-->=r1c1
5=r1c3 because 5<>r1c3-->1=r2c7-->8=r3c9-->7=r4c7-->=r1c1
2<>r1c2 because 2=r1c2-->9=r1c1-->=r2c3
8<>r1c2 because 8=r1c2-->9=r1c1-->=r1c1
2<>r1c1 because 2=r1c1-->3=r1c7-->1=r2c3-->4=r2c5-->9=r2c6-->4=r3c2-->=r3c2
8=r1c1 because 8<>r1c1-->3=r1c1-->9=r1c2-->=r2c3

Sunday 9-Apr-2017

... by: ray

1. Use only basic strategies and the forcing bi-location cell set method.Start
with F4{168} - bi-location and tri-location cell for 1.Progressively form the
3-element bi-location cell set F4E9C8,forcing only the 1-cell to 3-cells run
out values until F4E9C8 = (6,7,8) which gives the solution.Other bi-location
cell set solutions found were: B6E9F4 = (6,7,6), A9B7E5 = (6,7,4).
2. Using this solution,with basic strategies, the following non bi-location cell
set solutions were found: H4J6 = (2,5), C2F1 = (3,1), D7E9 = (4,7), A9B5 =
(6,8). NB: Using basic to extreme strategies,F2 = 1, B1 = 1 gave 1-cell

Saturday 8-Apr-2017

... by: Paolo Calaresu

C2H3=(3,1) gives the solution with only naked singles,hidden singles and locked candidates.

Saturday 8-Apr-2017

... by: Paolo Calaresu

I use single and Nishio with only basic strategies (naked singles,hidden singles and locked candidates).
IF C2=3-->E3≠ 4,; F2 ≠ 2; F6≠(4,8);
G6 ≠ 3; G7 ≠ 3; G8≠ 5; H1≠1;
A1 ≠(1,5); A2 ≠2; B7 ≠ 1; B1≠ 4; B2≠ (4,7); B5≠ (4,6);
C3 ≠ 4-->solution with only basic strategies (naked singles,hidden singles and locked candidates) .

Saturday 8-Apr-2017

... by: jkl

morph: champagne dry & #240
champagne dry to # 245
Rot.90clockwise 1
Renumb: 1 2 3 4 5 6 7 8 9
Columns: 9 8 7 6 5 4 2 1 3
& Rows: 7 9 8 6 5 4 3 2 1


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