The solution follows the puzzle name. In each case, drop the
colored marble in order into the funnel indicated.
Let each marble go as far as it can before adding the next.

Marcus Tiron
1. Left funnel: red
2. Right funnel: blue
3. Right funnel: yellow
4. Right funnel: yellow
5. Right funnel: yellow
6. Right funnel: blue
7. Left funnel: blue
8. Left funnel: red
9. Left funnel: red
10. Left funnel: red

Copernicus
1. Right funnel: any
2. Left funnel: steel
3. Center funnel: any
4. Right funnel: steel
5. Left funnel: any
6. Center funnel: steel
7. Right funnel: any
8. Left funnel: steel
9. Center funnel: any

Leone Alberti
1. Right funnel: green
2. Center funnel: red
3. Left funnel: blue
4. Left funnel: yellow
5. Center funnel: orange
6. Right funnel: violet
7. Right funnel: blue
8. Right funnel: red
9. Left funnel: green
10. Center funnel: yellow
11. Right funnel: violet
12. Left funnel: orange

Thabit Ibn Quarra
1. Left funnel: steel (or orange)
2. Right funnel: orange
3. Right funnel: red
4. Left funnel: yellow
5. Left funnel: blue
6. Left funnel: blue
7. Right funnel: red
8. Left funnel: orange
9. Left funnel: violet
10. Right funnel: blue
11. Left funnel: red

Gerbert d’Aurillac
1. Center funnel Right funnel: blue
2. Center funnel Right funnel: yellow
3. Right funnel: orange
4. Left funnel: red
5. Center funnel Right funnel: red
6. Center funnel Right funnel: steel
7. Right funnel: orange
8. Center funnel Left funnel: yellow