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# Tough Sudoku for 12/December/2018

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Submitted by: Gath

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 Haven't seen any of Keyan's photos for quite some time. 12/Dec/18 12:04 AM 1. Note 19 @ e56,467 @ bcf3.Unique possibilities to 29.2. Locked 4s @ ad15 (X-Wing);c1<>4.UP81. 12/Dec/18 1:07 AM 19:29. 12/Dec/18 1:21 AM Basics to 29 1.X-chain x=4 =>[c5,c1,f5,f1]<>4 UR 19 eg56 => g5<>9 g5<>1 if g3=9 =>i5=1=a1 a2=3 a5=c3=f4=d1=4 f5=5 ab1=79 d56=68 =>d2=9 f2=8 f1=2 g1=8 e3=3 e7=2 a7=7 a6=6 d5=6 g5=0 =>g6=9 i5=1 solve 12/Dec/18 4:47 AM c1<>4 alone, is not sufficient. needs more work. 12/Dec/18 5:03 AM Basics to UP = 291. (3=2)e3 - f1 = HP(21)ga1 - (1=3*)a2 - (3=2674)a8765 - (4)d5 = (4)d1 => -3d1, -3*d2; UP = 332. (8=31)i42 - (1=8)g1 => -8f453. UR(19)eg56 => -19g54. (4)d5 = d1 - f3 = c3 - (4=6)c4 - g4 = (6)g5 => -6d5 ; UP = 81 12/Dec/18 5:03 AM correction: step 2 eliminations are -8g45 12/Dec/18 5:07 AM Wow! That's a beautiful sky in this photo. 12/Dec/18 6:44 AM Hi rwm,Very nice ! 12/Dec/18 7:08 AM #30 2?@g1=>i2=1=>a1=1=>d1=4=>68@d56=>f2=8=>f8=9=>f1….9<>2=>g1<>2 #34 3?a2=>a7=7=>a6=6=>38@c57=>c4=4=>a1=4=>abc123<>1=>a2<>3NB /#25 19@e56 467@bcf3 19@eg6 4@cf34#30 9@bc1=>f1<>9 12/Dec/18 8:29 AM 1. Unique possibilities to 29. Note locked 4s @ ad15.2. Whether h1=3=e3;OR h1=8;df2=89.3. Whether f3=4=a1,a2=1,i2=3;OR f3=4,f1=2;e3=3.UP33.4. Whether a6=7,a72=31;OR a6=6=h8=g4=d5;a5=4=f4,i8=5=h4=g3;g1=1 (or else 19UR @ eg56).UP81. 12/Dec/18 9:58 AM Step 3 should read: 3. ...........OR f3=7, .......... 12/Dec/18 10:01 AM 13!!! Good morning all. 12/Dec/18 10:15 AM Great colours 12/Dec/18 8:50 PM