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Submitted by: uno hu

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27/Feb/17 1:07 AM
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Another one:
Weekly extreme #545,SE=8.4 (13k+17aic)
27/Feb/17 1:11 AM
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Lovely tile roof on this building.
27/Feb/17 5:53 AM
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1. Note d4f6=18.Unique possibilities to 31.
2. Whether b4=8,e4=4;OR d4=8,d1=1;d5=2.UP35.
3. Whether c4=3,a6=8=d4;OR c4=2,c3=5=de1,g1=2=h6;h4=1.UP81.
27/Feb/17 6:39 AM
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#27 9@ef9=>c9<>9 4@ab8=>h8<>4 18@d4f6=>f6<>6
#33 8?@f6=>d4=1=>b4=8=>ab3=8=>f6<>8
VHBC to #81
V:Only cell left in Vertical column for this candidate
H:Only cell left in Horizontal row for this More...
27/Feb/17 6:44 AM
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Hi Les. I can't follow your logic today. After b4=8, a3=8 and no contradiction yet?

Best Regards, Alfred.
27/Feb/17 7:39 AM
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Site puzzle. lcls to 32
1. (1)d1=(1-8)d4=(8-4)b4=e4-(4=2)d5 =>-2d1 lcls to 35
2. (9)g8=(9-3)g4=g6-(3=8)a6-f6=f9-(8=5)i9 =>-5g8
3. (8=3)a6-c4=(3-5)c2=hi2-g1=g6-(5=238)ab6.c4 =>-8f6 singles to 81
27/Feb/17 8:06 AM
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Hi Alfred,
Note: UP 32 as confirmed by Cenoman.
If f6=8 then this leads to a3 and b3 both being 8. Therefore f6 cannot be 8. i.e. as stated ab3<>8.
I found the puzzle falls out with UP's thereafter.
Cheers Les.

27/Feb/17 11:12 AM
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Hi Alfred,
Note: UP 32 as confirmed by Cenoman.
If f6=8 then this leads to a3 and b3 both being 8 i.e. as stated ab3<>8. Therefore f6 cannot be 8.
I found the puzzle falls out with UP's thereafter.
Cheers Les.
27/Feb/17 11:16 AM
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Hi Alfred.
Your right something wrong with my logic today.
I'm working on it.
Thanks Les
27/Feb/17 12:05 PM
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#27 9@ef9=>c9<>9 18@d4f6=>f6<>6 #32 4@ab8=>h8<>4
#33 7@d78=>d5<>7 4?@d5=>d1=2=>d4=1=>f6=8=>b4=8=>a…….i4<>4=>d5<>4
#34 347@e456=>e39<>47
#36 7@d78=>d1<>7 25@ce3=>g3<>25 More...
27/Feb/17 2:07 PM
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Very straightforward tough today.
27/Feb/17 2:59 PM
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WE #545
A long path:
3)(4=3)g5- ca5=(3-4)a6=(4)a5,=>defi5<>4,a6<>9
27/Feb/17 5:38 PM
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27/Feb/17 5:59 PM
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27/Feb/17 6:01 PM
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Tough #545. I got it down to 7 nontrivial steps after the initial X-Wing: 1 Y-wing, 1 cycle, 2 aics, 2 krakens, 1 dynamic aic (which could be replaced by a 3rd kraken).
SE 8.4
#1 SSTS to UP27
w X-Wing (1)ai19 -> -1a3568i38.

#2 Y-Wing (9)df9=(HP(39)-2)df7=e8-(2=9)g8 -> -9g9; More...
28/Feb/17 5:40 AM
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typo #3 cycle (3=4)g5-(4)e5=(4-3)a6=df5-g5 -> -34defi5,-9a6

e5 should be a5:
#3 cycle (3=4)g5-(4)a5=(4-3)a6=df5-g5 -> -34defi5,-9a6
28/Feb/17 7:28 AM
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28/Feb/17 9:34 AM
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Long path, as others.
lcls to 27
// XW(1)ai19 =>-1a3568.i38
1. (9=2)g8-e8=(2-39)df7=(9)df9 =>-9g9; lcls to 28
2. (1)h8=h3-(1=2)i1-i4=(2)h46 =>-2h8
3. (2=4)h4-(4=3)g5-(3=248)ehi4 =>-2f4
4. Kraken cell (256)e8 =>-5h8; lcls to More...
28/Feb/17 11:17 AM
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1h8 -> 1 solution
2h8 or 5h8 -> 0 solution
6h8 -> 0 solution via NT(259)egi8
01/Mar/17 8:07 AM
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The above comment is related to WE545 ...
01/Mar/17 8:08 AM
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