Blue has a move in the center based on the 5-leg Zigzag that kills the ZERO Stickleback and goes for a net-4, but it will come at a cost - he gives Red the Tailed Horse, leaving a blank shape I've nicknamed The Glove, a Cee-family variant. He could just give him the Zigzag or take the hind legs off the Tailed Horse, leaving a vacant shape that I've nicknamed The Time Machine (tipped on its side by the Morlocks no doubt). That will be the most space he can leave as the Bird is gone already: