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Submitted by: uno hu

Indicate which comments you would like to be able to see

1. Note a6b5=16.Unique possibilities to 31.
2. Whether c6=3;OR c5=3,c8=4(or else 27 Unresolvable Rectangle @ bc48);i6=4.UP33.
3. Whether i3=1,ah3=59;OR i3=5,i4=9,g6=8,i12=16,g2=7;OR i3=9,a37=56,d7=7;e3=7.UP38.
4. Whether i4=9=a3;OR i13=9;h3=2.UP81.
04/Feb/17 2:43 AM
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Standard techniques up 31
1. (6)i7=i12-(6=587)cgh2=(7)d7 =>-6d7 up33
2. (3)i7=(3-4)i6=c6-a4=[9a4-9c46]=(9-8)c1=(8-2)g1=h3-h7=(2)e7 =>-3e7 up 34
3. (5=3)h7-i7=(3-4)i6=c6-(4=9)a4-(9=5)a3 =>-5a7, -5h3
4. (2)h3=(28-9)cg1=(9)i1 =>-9h3 up 49
5. (3=49)a48-(9)a3=(9-8)c1=g1-g6=(8-9)h6=(9)h8 =>-3h8 up 81
04/Feb/17 3:24 AM
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Hi Alfred, very neat and nice UR. But for me it leads to 40 solved cells (details below)
Standard techniques up 31
1. UR(27)bc48 =>4c48==9c4 (using internals)
//(4)c48=(9)c4-(9=4)a4 =>-4c6 up 40
2. XW (9)a3=a4-i4=i13 =>-9h3; stte

lcls techniques following More...
04/Feb/17 4:30 AM
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Very unusual plant, Kate.
04/Feb/17 6:00 AM
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As Alfred's:
2)(2=9)h3-(9=6)i1- (6=2)f1,=>f3<>2.UP=81
04/Feb/17 7:35 AM
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#27 134@b123=>b5<>1
#32 7?@h3=>g1=2=>c1=8=>{i1=9,a3=9=>i3=5=>i4=4}=>a4={}=>h3<>7 3@c56=>c8<>3
#34 1@i123=>h3<>1 1?@i3=>b3=4=>f3=2=>g1=2=>c1=8=>{i1=9,c2=5=>i2=6=>a7=6=>a9=5,a3=9=>a4=4=&G More...
04/Feb/17 7:38 AM
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Hi cenoman. Thanks for the explanation, which makes my step 3 unecessary.I missed the 578 triple in row 2.
Best regards, Alfred.
04/Feb/17 7:50 AM
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14:41 With a very long break (paused it) between start and finish. Rang my sister-in-law.
04/Feb/17 2:09 PM
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Yay, Tough is back.
04/Feb/17 5:02 PM
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05/Feb/17 9:27 AM
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