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Tough Sudoku for 17/March/2017


Choose a number, and place it in the grid above.

  1 2 3 4 5 6 7 8 9
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Submitted by: Gath

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17/Mar/17 12:23 AM
Here's a modified version of Andrew Stuart's 'Weekly unsolvable' - an 11.3, but I added enough to knock it down to an 8.3

17/Mar/17 4:33 AM
Must have been a nice ride.
17/Mar/17 5:05 AM
#28 34@f23=>f4<>4 156@abc1=>a2<>156
#43 27@bc6=>b5<>2
#59 5?@g5=>fh9=5=>g5<>5
VHBC to #81
V:Only cell left in Vertical column for this candidate
H:Only cell left in Horizontal row for this More...
17/Mar/17 6:28 AM
Looks like my tinnie. So much fun.
17/Mar/17 10:15 AM
Jim's S=8.3
2)(6)f6=f31-(6=1)d1-a1=b2-(1=4)b7=(4=6)b6,=>d3cdhi6<&G T;6,fh1<>1,b94<>4
17/Mar/17 12:37 PM
lcls to 28
//XW(5)cf67 => -5 b67.i6
1. (5)f6=c6-(5=2)c7-g7=i78-(2=46)bi6 =>-6f6 lcls to 50
//Kite (2)i8=a8-c7=c6 =>-2i6

SE 8.3 seems overrated (by SE...)
17/Mar/17 10:01 PM
17/Mar/17 11:03 PM
The Multifish or its all cells complementary in the initial puzzle doesn't disappear with the added clues since the initial puzzle has a unique solution. Therefore, the puzzle is now solved 'basics' to the end :

3 singles; UP28
Multifish (1249)Rows2679 -> -{4b49, 2c5, 9c3, 6d6, 7e2, 1f13, 9f3, 3g7, 6h6, 2i45, 4i4}; UP42
NP(56)i45; UP50; XWing{2c67, 2i68} -> -{2a8, 2g7}; UP81
17/Mar/17 11:03 PM
Same as cenoman. SSTS to UP27
w X-wing (5)cf67 -> -5b67i6; UP28.
#1 (6)c8=c6-f6=f13-(6=1)d1-a1=(14)b27-(14=6)b6 -> -6c6; UP50.
#2 turbot (2)i8=a8-c7=c6 -> -2i6; UP81.
17/Mar/17 11:16 PM
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