Always click on windows, plants, and small cracks in the walls. "Pieces" are almost always hidden behind these interactions.
In this chapter, you must collect four photo pieces in each season to complete a picture in the frame. One is inside the kitchen drawers.
If you are stuck on a specific piece, you can use the Rusty Lake YouTube Channel or the official Steam Community Guide for full walkthroughs of each game. Soubor: Cube.Escape.Collection.v1.0.zip ...
Because the collection is a bundle of multiple games, the "piece" you need depends on which specific chapter you are playing. Below are instructions for finding key pieces in some of the most common early chapters.
Nearly every chapter has a set of drawers (often labeled with roman numerals) that contain at least one essential item or photo piece. Always click on windows, plants, and small cracks
Click on the window repeatedly; a piece will appear on the glass. Find one in the drawers.
Place the absinthe spoon and sugar cube on the glass. Fill it with absinthe, then click the dissolved sugar to reveal a piece. One is inside the kitchen drawers
Give the hat to Paul (the man in the room) to receive a palette or piece he drops.