gistfile1.txt

 updateDisplay: function() {

        if (!this.getPath('subsurfaces.length')) this._createSubsurfaces();

        console.log('board update display');
        // console.log('SC.ContainerSurface#updateDisplay()');
        var subsurfaces = this.get('subsurfaces');
        if (subsurfaces) subsurfaces.invoke('updateDisplay');
    },

    _createSubsurfaces: function() {
        console.log('creating subsurfaces');
        var subsurfaces = this.get('subsurfaces');

        for (var i = 1; i < 10; i++) {
            for (var j = 1; j < 10; j++) {
                var height = this._cellHeight,
                    width = this._cellWidth,
                    x, y, surface;


                x = (i - 1) * width;
                y = (j - 1) * height;

                surface = Sudoku.CellSurface.create({
                    i: i,
                    j: j
                });
                surface.set('frame', SC.MakeRect(x, y, width, height));

                subsurfaces.pushObject(surface);
            }
        }


    }