Puzzle Description:

(This puzzle was recovered from the 2016 database crash. Description not available.)

#1: Wombat (wombatilim) on Mar 25, 2023 [HINT]       classify

Initial line & color logic solves 93% with only red remaining.

C44: if the 5 goes into R11, it makes C43 or C45 invalid. LL.

C45: If the 4 goes into R8-9, it makes C46 invalid.

C45: If the 4 goes into R10, it makes C43 invalid in 2 moves. LL.

R16: If the 5 goes into C15, it blocks R20 C13-20, which will make R16 invalid. R16C20 is red instead. LL.

R20: EL places the 2 in C47-48. LL.

C44: If the 5 goes past R18 it makes C43 or C45 invalid. LL.

C20: If the red 3 goes into R13, it makes C13 invalid. LL.

C23: However the 5 gets placed, R13C24 is red. LL.
C31: However the 5 gets placed, R13C30 is red. LL.

C23: However the 5 gets placed, the red in R15C25 is the red 1 in C25. LL.
C31: However the 5 gets placed, the red in R15C29 is the red 1 in C29. LL.

C26 & C28: If the reds in R15 are part of either 3, the other one will need to place a red in R10. If they are both part of the red 1s, they both place a red in R10. Either way, R10C23 and R10C31 must be white. LL.

C23: If the 5 reaches R14, C24 is invalid.

LL to finish.

Found to have a unique solution by wombatilim.

Found to be solvable with moderate lookahead by wombatilim.

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