Puzzle 42: Room Reason

[zotmeister]

See Puzzle 21 for instructions; the coloration of some rooms is for aesthetic purposes only. In concluding the Puzzle Japan collection, it seemed a notable farewell was appropriate. I said these would get harder as they went along, and in test solving it would seem I succeeded - this one's a good challenge. - ZM

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[zotmeister]

In chronological order: GLmathgrant, yyw. - ZM