... by: Frans Goosens

#702

With trial and error

Combination A3=356 and G9=149

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A3=3 G9=1 Wrong, Undo calculation

All reset to initial position

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A3=3 G9=4 Wrong, Undo calculation

All reset to initial position

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A3=3 G9=9 Wrong, Undo calculation

All reset to initial position

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A3=5 G9=1 Wrong, Undo calculation

All reset to initial position

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A3=5 G9=4 Wrong, Undo calculation

All reset to initial position

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A3=5 G9=9 Wrong, Undo calculation

All reset to initial position

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A3=6 G9=1 No solution, Fixed

Combination 2-digits cells

C5=3 No solution, Undo calculation
C5=7 No solution, Undo calculation
D1=4 Wrong, Undo calculation
D1=7 No solution, Fixed
D5=1 Wrong, Undo calculation
D5=5 Wrong, Undo calculation

All reset to initial position

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A3=6 G9=4 No solution, Fixed

Combination 2-digits cells

C5=3 Wrong, Undo calculation
C5=7 Wrong, Undo calculation

All reset to initial position

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A3=6 G9=9 ( E3=8 ) Solved,

Total solving time is : 312 sec.
Number of logical steps is : 41660

... by: Dieter

#702 - initially populated cells: 22 = 27,2 %
No solver used, solver = brain.
basics: %

Strategy: numbers 1,2,4,5 occur most frequently, combine two cells with almost same candidates.
combinations of G6 = (3,4,5,7,9) and J6 = (2,5,7,9)
G6=7 & J6=9 solve.

... by: Serban

# 702 Basics to 22

1. C7=E9=6 basics to 37
--1a. X-chain x=7 =>[J4,C68]<>7 x=9 => A7<>9 => A7=29 J4=2 basics to 39
--1b.XY-wing 1379 [E4,A7,F57] => A4<>7 => A4=9 solve

2. C2=G6=7 solve

3. B7=J6=9 solve