[en] A model is presented in two space dimensions which has an infinite number of kink and antikink solutions. The Lagrangian of the model is described in terms of three-real-valued scalar fields qsub(i)(x,t). The Lagrange multiplier lambda (x,t) introduces a self-interaction of the qsub(i)-fields by restricting the field vector q on the unit sphere. The Lagrangian of the model is vivariant under the action of the internal symmetry group O3