20kyu 1～4
11～44
111～444
17 kyu +5, -5
+55, -55
+555, -555
15kyu 1～9
11～99
111～999
14kyu Rule of 5
Rule of 55
13,12kyu Rule of 10
Rule of 5 & 10
11kyu 1 digit +/-
1 digit +
2 digits 10-7kyu
3 digits 6kyu
4 digits 5kyu
5 digits 4kyu
6 digits
7 digits 3kyu
8 digits
1
2
3
4
5
6
7
8
9
10
12
15
8.0Sec
6.0Sec
5.0Sec
4.0Sec
3.0Sec
2.0Sec
1.5Sec
1.0Sec
0.7Sec
0.5Sec
0.3Sec
?
