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# Tough Sudoku for 25/August/2019

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Submitted by: Gath

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 It's nice to have a straightforward puzzle today. Yesterday's puzzle was a tough one for me! 25/Aug/19 1:29 AM Basics to 29 1.X-chain x=4 => [a4,g5]<>4 => XY-wing 357 [a2,a4,b1] =>[a1,b6,b4]<>3 => b1=a4=3 basics to 35 2.X-chain x=7 => [h6,i2]<>7 =>i2=h6=6 basics to 40 3.XYZ-chain 578 [g9,g5,i5] =>g4<>8 XY-chain 2478 More... 25/Aug/19 3:06 AM The train passes by here! 25/Aug/19 4:58 AM 41:09 25/Aug/19 5:41 AM Basics to 291. X-wing (9)be36 =>-9cdf3.cf62. Finned X-wing (4)ag58 + c5 =>-4a43. (5=7)a2-(7=3)b1-a1=(3)a4 =>-5a4; basics to 354. (3=267)fgh6-b6=a5-a1=h1-(7=6)i2-i5=(6)h6 =>-6f6; basics to 405. (3=27)fg6-b6=(7-4)a5=a8-g8=(4-2)g4=(2)d4 =>-2f6; singles to 81 25/Aug/19 7:58 AM Basics to 291. X-wing(9)b36|e36 => -9cdf3|cf62. (4): a8 = g8 - h7 = h4 => -4a43. (3=57)a42 - (7=3)b1 => -3b4 ; UP = 354. (2=7)g6 - (7*)b6 = b3 - a1 = (7*)h1 - (7=689)ihc3 - (9=4)c5 - c7 = h7 - h4 = (4)g4 => -7*h6, -2g4 ; UP=81 25/Aug/19 10:04 AM The iron ore trains do, Jackie. Not passenger trains. 25/Aug/19 10:14 AM Another great pic Anne 25/Aug/19 11:25 AM