BIKIDO

From BoardGameGeek:

BIKIDO is an abstract strategy game with complete information. Subtle, elegant and challenging, it tests the players' planning and anticipation skills. They must work their way through the opponent's defense, cross the river by taking over the banks, and use the opponent's pieces to climb up and reach the opposite bird's nest to cover it. The magnetic box unfolds to become the board. Each player lays out their 34 two-tone acrylic pearlescent tokens and their transparent bird. In addition to the classic mode, the game provides a campaign of 10 scenarios and 20 starting arrangements of varying difficulty. -description from the designer