Step 1
?
/ \
? 0
/ \
5 ?
/ \
3.33 2
Step 2
1.92 (1.92)
/ \
(1.16) 3.83 0
/ \
5 2.67 (0.67)
/ \
3.33 2
No inconsistencies here (1.92 > 1.16 > 0.67), so a move at
is worth 1.92 (exact: 1 + 11/12).
12-fold
Step 1
?
/ \
? 0
/ \
60 ?
/ \
40 24
Step 2
23 (23)
/ \
(14) 46 0
/ \
60 32 (8)
/ \
40 24
23/12 = (24 - 1)/12 = 2 - 1/12 (= 1 + 11/12 = ugly)