Azuma

1.
1 b. o1 L% a; q; f% w1-6 vs 7-12
) @# V  T3 L( P( f7 K# {2 zif 1-6 = 7-12     13 is fake  c& C8 P( j/ K( [5 t) E

3 |  u0 ^# e% p) g/ N  G; e7 _if not
. ~+ c" d, G6 u5 [  q& W- y
. U- T/ {) W" TWeight the 2 time 5 P# U1 [; D5 i  s; v

; J, Z9 q7 c, ?3 W9 h0 VSuppose 1-6> 7-12! J& p% B0 p1 n

! S+ \9 i. F" |+ B# K4 ^" }4 P. a7 t1-3 vs 4-6 ; P6 u& j7 d. G! n

& m! [" E4 k4 j! b1 {5 JThen Weight the Third) y% v; H7 U, }4 H. x
3.0 \& r2 Z! i8 N0 N" ~
; A0 d* x! z) T# v$ ~. x" h' n1 L0 I
Suppose 4-6 > 1-3
9 _/ r% b. ~# Q: R' o8 ^3 E  f' l* m: U" Q2 s0 }3 \
Just like the first Step
- ]& X* v( o7 x+ z: P" a
9 A; H( W- w' h/ u, c3 ]! @% d) X- n4 vs 5 ) Q9 H+ \( D9 H: L
) Y: ^* ~# `' F% u( o% k
if 4=5 6 is the fake one 6 d; u  I! i7 y! j1 @

' j: s. [5 G" W" nif 4>5  4 is the fake one
8 n7 Y; h0 e/ U! K
$ [% |& p" C# Z: r; r) v2 H6 {and so on......................