SFUMATO
| Date | Clue |
|---|---|
| 2009-01-17 | Artist's tone-blending technique, used in the "Mona Lisa" |
| 2003-07-26 | Tone-blending painting technique |
| Date | Clue |
|---|---|
| 2009-01-17 | Artist's tone-blending technique, used in the "Mona Lisa" |
| 2003-07-26 | Tone-blending painting technique |