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 1. Unique possibilities to 27. Note df1=27.2. Whether d9=5,d2=6,d46=12;OR d9=17;f4=4;(or else Unresolvable 127 @ df149).UP34.3. Whether i9=9,b9=7=i4;OR i4=9;OR i2=9=a1,h1=8,gh5=29,b4=9,i4=7;i3=8.UP39.4. Whether a6=7;OR a6=9=e4;i4=7.UP81. 17/Jan/18 5:28 AM |  |
 A tree with an interesting name Kate. 17/Jan/18 7:16 AM |  |
 Nice finding, your deadly pattern, Alfred ! It shortens the path by a lot of steps, and without the DP, the puzzle is just boring. I was just wondering why such a punishment... So, in Eureka:(SE = 8.5) Basics to 271. DP(27)df1,(12)df4,(17)df9 using mixed external-internal More... 17/Jan/18 8:56 AM |  |
 37:09 17/Jan/18 10:16 AM |  |
 Hi cenoman. I needed a Kraken for step 2 (i4<>7, whether 9 @ i249). Could you check your step 2 please. I have 789 @ a6 and 189 @ a1, so I could not follow your step 2. And even if a1 becomes 8, can't h3 still become 8?Best regards, Alfred. 17/Jan/18 11:31 AM |  |
 Hi Alfred, my mistake !I took an option for a krakenless path, but two intermediate steps remained stuck in my keyboard !Those are two steps I recycled from my desperate search for a reasonably long path, until I read your tricky DP...So, here is my complete path:1. More... 17/Jan/18 10:01 PM |  |

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