Splashed by the Ferry

Very Hard — logic-grid deduction puzzle

A wave from a ferry soaked the clerk's notebook just after Minseo, Jaehyun, Sora and Donghae closed their scarf stalls on the pier.

On the busiest afternoon of heritage week, ferry after ferry brought visitors to the port city. Four dyers had stalls on the pier to meet them: Minseo, Jaehyun, Sora and Donghae. Each had dyed silk scarves with plants and bark, in a colour nobody else had. Stepping off the ferry, you passed stalls A, B, C and D, in that order. Stalls A and B stood on the open pier, while C and D were under the roof of the ferry hall. The harbour office wanted to know which stretch of the pier drew the buyers, so at closing time a clerk noted a neighbour tally for every stall. A stall's tally left out its own sales: it added up the scarves sold at the stalls right beside it. The stalls at the two ends had only one neighbour, so their tallies counted just that one stall. No two dyers sold the same number of scarves. Then a ferry pulled in too fast, its wave soaked the notebook, and the day had to be pieced together from what was left.

Clues

1. Walking along the pier, you came to the brown scarves somewhere between the grey ones and the pink ones.
2. Donghae sold fewer scarves than Jaehyun did.
3. The neighbour tally for Minseo's stall came to 53.
4. Jaehyun set up under the roof, at stall C or stall D.
5. Either Donghae worked stall C or the white scarves sold 52, but not both.
6. The brown scarves outsold the grey ones.
7. Whoever dyed the white scarves sold them from one of the two stalls under the roof, C or D.
8. Of Minseo, Jaehyun and Donghae, it was Minseo who sold the most scarves.
9. Buyers took home more white scarves than pink ones.

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