Azuma

1.9 @- M. k& d% M  e
1-6 vs 7-12
. l% D2 @9 `  k& W( Oif 1-6 = 7-12     13 is fake  p  I: M+ B6 Z) V7 P9 y# l! [( O0 i

- C/ J' I+ _; j: S- P) Mif not
: z- H0 A! E1 W1 A5 D+ F
4 f# R! z  S4 ?) ^* R! lWeight the 2 time ' `) d1 T# c' y( i3 s- ]4 k
+ P2 X( [3 g6 |( t
Suppose 1-6> 7-12
& n' x( b; y" I% a4 k4 z+ @* ^' F% U& ^" Y' S) H
1-3 vs 4-6
2 n9 w# g4 b+ Y: i
8 B0 a# u8 k2 X; C- Z; }0 jThen Weight the Third1 ~8 R# Z4 H; M
3.
  g# b( _& K! f* W9 Q$ y2 A5 {  w. H/ n  n) Z4 i
Suppose 4-6 > 1-3
) s/ ]8 h3 J/ d; e0 r1 E& j$ A: Q4 }* X7 e+ U5 b
Just like the first Step, N+ D+ c6 h6 V0 G+ R5 ~* e. o6 X

* @/ Z5 V$ _  `3 |7 Z! a8 o4 vs 5 / s0 B, e4 L( z0 x: s* \
- d) ^. h: W) J' v% B' c
if 4=5 6 is the fake one
% Y% d& M) L, c/ g9 w( v% m
; a% u" N* \) S& S- Jif 4>5  4 is the fake one
- V: o' t7 I- M0 i$ H9 ?! Q
2 @, f) K) n' l& L( e+ f2 fand so on......................