One Sudoku - one day, one sudoku

Best cities

1. Ho Chi Minh City 437
2. Hanoi 239
3. Da Nang 0
4. Haiphong 0
5. Bien Hoa 0
6. Hue 0
7. Nha Trang 0
8. Can Tho 0
9. Rach Gia 0
10. Quy Nhon 0
11. Vung Tau 0
12. Nam Dinh 0

Best players

1. novice 0
2. minato 0
3. phongcam 0
4. viet 0
5. nam 0
6. tranphuong 0
7. kotori -11
8. chuong -11
9. phuc -11
10. guitar -11
11. phucdaica -11
12. tam -11
13. lequang -11
14. thanh -11
15. piano -11
16. piksal -11
17. kyon91 -11
18. gnartrang -11