| KenKen and Sudoku Olympiad Championship: Bronze (2015) |
| Mental Calculations Olympiad Blitz: Bronze (2014) |
| Mental Calculations World Championship: Bronze (2013) |
| Sudoku and KenKen Olympiad Championship: Bronze (2013) |
| Mental Calculations World Championship: Bronze (2012) |
| Mental Calculations World Championship: Bronze (2011) |
| Sudoku and Ken Ken Olympiad Championship: Silver (2011) |
| Mental Calculations World Championship: Bronze (2010) |
| Mental Calculations World Championship: Bronze (2008) |
| Mental Calculations World Championship: Silver (2007) |
| Mental Calculations World Championship: Bronze (2006) |
