The original circuit was only splitted in functional groups and divided out of 3 circuitboards. The first board generates the video-signal and the second board generates the ball and the paddles and controls both. PONG is already playable. The third board generates the 7-segment-display, counts the scores and displays they and controls the whole game. The schematic was redrawn complete, the most parts of the logical circuit are identical with the original. There are no great changes regarding the original schematic.
See also YouTube