Each of the four panels on the wall lays out a simple seasonal riddle. You need to sort out the answers and then adjust the central mechanism so the answers all appear at the same time. The answers: flower for spring (either the full flower or the blossom will do), flame for summer, windmill for fall and snowflake for winter. Adjusting the mechanism has an extra wrinkle. Three of the four control wheels change the answer for more than one season. Summer (the top one) also adjusts spring and winter, spring also adjusts winter and winter adjusts fall. (Fall adjusts only fall.) So you’ll want to start at the top, with summer (which isn’t effected by any other season) and work counter-clockwise. When the answers are in place, four compartments open in the columns. Three (spring, summer and winter) contain staves.