Y-MOKU

The winner is whoever first makes
(i)  a line of 5 (or more) adjacent stones of his own colour; or
(ii) a standard Y-connection of his own colour.
Swap option exists.

Game Example:
                              _XX_   _OO_(was swapped)
            .              1. m11     m9
           . .             2. p10     j10
          . . .            3. o9      n8
         . . . .           4. p8      n10  
        . . . . .          5. o11     o7
       . . . . . .         6. l10     k9
      . . . . o . .        7. k11     i11
     . . . x o x . .       8. s11     q11
    . . . o o x . . .      9. l8      h12
   . . . o x o x . . .    10. g13     f12
  . . . o x x x o x . .   11. resign
 . . o o . . . . . . . .  12.
. . . x . . . . . . . . . 13.  
abcdefghijklmnopqrstuvwxy