| Name: | Guilherme Twardowski |
| Federation: |  |
| Years: | 1999 - 1999 |
| Total Games: | 6 |
| Wins: | 1 (16.67 %) |
| Draws: | 0 (0 %) |
| Losses: | 5 (83.33 %) |
| Score: | 16.67 % |
| Tournament | Date | Elo Avg. | Country |
| Pan American-ch U10 | ??/??/1999 | 49 |  Brazil |
| ECO | Opening | Games |
| C44 | King's pawn game | 1 games |
| B50 | Sicilian | 1 games |
| D00 | Queen's pawn game | 1 games |
| ECO | Opening | Games |
| C47 | Four knights, Scotch variation | 1 games |
| C61 | Ruy Lopez, Bird's defence | 1 games |
| B00 | King's pawn opening | 1 games |
| White | ELO W | Black | ELO B | Result | Moves | ECO | Date | Tournament | View |
| Twardowski, G | Vera Insfran, J | 0-1  |
16 | C44 | 1999 | Pan American-ch U10 |
|
||
| Twardowski, G | Jaimes, J | 0-1 |
56 | B50 | 1999 | Pan American-ch U10 |
|
||
| Twardowski, G | Hollanda, L | 0-1 |
14 | D00 | 1999 | Pan American-ch U10 |
|
||
| Invernizzi Cardozo, G | Twardowski, G | 0-1 |
10 | C47 | 1999 | Pan American-ch U10 |
|
||
| Catelli, H | Twardowski, G | 1-0 |
29 | C61 | 1999 | Pan American-ch U10 |
|
||
| Carlo Miranda, D | Twardowski, G | 1-0 |
25 | B00 | 1999 | Pan American-ch U10 |
|
