Stanimir Chakalov
| Challenge | Status | End | Votes | Entries | Players |
|---|---|---|---|---|---|
| Our Earth - 24 hours | closed | 2 years, 5 months ago | 10800000 | 11302 | 11179 |
| Looking Down | closed | 1 year, 10 months ago | 17400000 | 17405 | 5814 |
| Being Together | closed | 1 year, 8 months ago | 15200000 | 14441 | 7174 |
| Land vs Sea | closed | 1 year, 6 months ago | 12800000 | 31644 | 7883 |
| Photographer of the Week | closed | 1 year, 4 months ago | 23400000 | 27115 | 6895 |
| Mist & Fog | closed | 1 year, 2 months ago | 15600000 | 21201 | 7096 |
| Capturing Birds | closed | 1 year ago | 12600000 | 32156 | 8041 |
| Rotated | closed | 10 months, 2 weeks ago | 8500000 | 7177 | 3572 |
| Photography in Motion | closed | 8 months, 3 weeks ago | 9300000 | 20913 | 5209 |
| City Life | closed | 6 months, 2 weeks ago | 10800000 | 25566 | 6366 |
| Starts With "G" | closed | 3 months, 4 weeks ago | 10700000 | 24228 | 6070 |
| Photographer of the Week | closed | 1 month, 4 weeks ago | 19800000 | 21394 | 5466 |
| Mosaics or Tiles | closed | 1 week, 1 day ago | 5700000 | 3165 | 3098 |