1222 UNRESTRICTED 6-MOKU

Wins the player that makes a 6 in-a-row on an unlimited square board.
Each player moves twice, except in the first move where just one stone is dropped

Sample game ('o' starts):

1. --- o24    o23 n24
2. m25 n25    l25 m26
3. n27 o26    p24 p25
4. o27 p27    q27 q28
5. n26 p28    l24 q29
6. o28 n29    'x' resigns

i j k l m n o p q r s t
. . . . . . . . . . . . 20
. . . . . . . . . . . . 21
. . . . . . . . . . . . 22
. . . . . . x . . . . . 23
. . . x . x o x . . . . 24
. . . x o o . x . . . . 25
. . . . x o o . . . . . 26
. . . . . o o o x . . . 27
. . . . . . o o x . . . 28
. . . . . o . . x . . . 29
. . . . . . . . . . . . 30

Can you see why 'o' won the game?