One Sudoku - one day, one sudoku

Best cities

1. Seoul 6753
2. Ulsan 1498
3. Suwon 346
4. Pusan 333
5. Iksan 9
6. Ansan 5
7. Yosu 3
8. Anyang 1
9. Taegu 0
10. Taejon 0
11. Kwangju 0
12. Songnam 0
13. Puch'on 0
14. Chonju 0
15. Ch'ongju 0
16. Ch'angwon 0
17. Uijongbu 0
18. Ch'onan 0
19. Kwangmyong 0
20. Kimhae 0
21. Masan 0
22. Cheju 0
23. Chinju 0
24. Kumi 0
25. Mokp'o 0
26. Kunsan 0
27. Wonju 0
28. Sunch'on 0
29. Ch'unch'on 0
30. Kuri 0

Best players

1. venalleth 1660
2. situru 1397
3. hanihana 1102
4. hychoi78 900
5. hjkim 831
6. ysnobel 641
7. soomin 336
8. wlgns 194
9. felixave 123
10. truthd 111
11. sujeong 48
12. sisterm 2
13. lsmboy 0
14. sori 0
15. erbin27 0
16. venalles 0
17. grass 0
18. shin_sung_mi 0
19. jeeyoun_chang 0
20. seek4ume 0
21. hayanbe 0
22. song 0
23. dentle 0
24. ktjycd 0
25. ssmoon 0
26. closer 0
27. bulley85 0
28. yb 0
29. penny 0
30. scv1101 0
31. burm -11
32. jang -11
33. dreamthaud -11
34. sean_nam -11
35. %ub0a8%uc11d%ud604 -11