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Comments on Puzzle #27137: When I was a wee lad...
By Aldege Cholette (Aldege)

peek at solution       solve puzzle
  quality:   difficulty:   solvability: moderate lookahead  

Puzzle Description Suppressed:Click below to view spoilers

#1: derby (Derby) on May 21, 2019 [SPOILER]

Comment Suppressed:Click below to view spoilers
#2: BlackCat (BlackCat) on Aug 9, 2020 [HINT]
I'm guessing when you were a wee lad you helped your dad drive the tractor. Very tough puzzle. A lot of good detail. I did have to guess several times.
#3: Wombat (wombatilim) on Feb 23, 2023 [HINT]
A lot of the LL moves in between these steps are difficult to spot, and the hint button doesn't catch them, so be extra vigilant when solving this one.

R1: EL places blacks in C9-15, and whites in C1-4 & C37-40. LL.
C1: The black in R29 will go at least one row up or down. Either way, R30C2 will be black. LL.
R34: The black in C22 can't be the 1 because there is already another black to the right of it. Therefore it must extend at least one column to the left or right. Either way, R33C23 is black. LL.
R35: The 6 can't be in C31-36 because it would force the 3 into C38-40, and both together creates a contradiction in R34. No matter where it gets placed in the remaining positions, R34C23 is black. LL.
R33: If the black in C29 is the 1, it forces blacks in C27-28 into R26, which creates a contradiction. Therefore R33C28 is black.

LL to finish.
#4: Web Paint-By-Number Robot (webpbn) on Feb 23, 2023
Found to have a unique solution by wombatilim.
#5: Web Paint-By-Number Robot (webpbn) on Feb 23, 2023
Found to be solvable with moderate lookahead by wombatilim.

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