1-2-3 is a game of logic that pits you against the machine. The game's "logical thinking" is hardwired without using a microcontroller. It's all diodes, transistors and LEDs. Easy to play. Not so easy to win. You play by moving a peg along a path of holes. Players move alternately, and on each turn a player can move the peg 1, 2 or 3 spaces (hence the name). The player who moves the peg to the final hole is the winner.
Specifications:

1. power supply: 9 V battery (not incl.)
2. dimensions: 70 x 50 x 16 mm / 2.8 x 1.9 x 0.6"

ce_rohs_open.pdf