PlaySudoku.us
Medium · Puzzle #545
6
9
4
1
8
5
4
8
6
9
7
6
2
4
4
7
9
8
1
8
7
2
1
6
3
9
1
9
3
5
2
4
7
2
5
6
1
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"Mathematics is not about numbers, equations, or algorithms — it is about understanding." — William Paul Thurston
"In order to improve your game, you must study the endgame before everything else." — José Raúl Capablanca
"In order to improve your game, you must study the endgame before everything else." — José Raúl Capablanca