# US 4,399,995 A · Chess game automatic continuation circuit

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- Number: US 4,399,995 A
- Document ID: US4399995A
- Status: Granted
- Kind: A
- Application number: 06/273,388
- Filed: 1981-06-15
- Granted: 1983-08-23
- Earliest claimed: 1980-06-14
- Inventors: Dieter Tunnerhoff
- Web page: https://patentgrep.com/patent/US4399995A

## CPC

- A63F 3/00643: {Electric board games; Electric features of board games (electric word or number games A63F3/0421; computer chess G06F; electric raffle games A63F3/081)}
- A63F: CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR

## Abstract

A data processing unit for chess with a central unit, with input keys for the central unit and with a start key for the initiation of the program for the calculation of a subsequent move of the game, and with a printing unit, comprising a control unit, a storage device, a power stage and a printer, the central unit being connected via a data collecting cable to the printing unit. The problem of the invention is the automatic continuation of the course of the game with any desired default time. For this purpose, a switching stage which responds to the print command transmitted in the data collecting cable is provided for. A relay is up-circuit from this switching stage, the normally-open contact of this relay being connected to the central unit, in parallel with the start key.

## Claims

### Claim 1

Apparatus for selectively enabling fully automatic play of a chess game including a data processing unit having a start input terminal and operable to automatically calculate chess moves and generating a print command signal as a result thereof, a manually operable start switch connected to said start input terminal for producing an activation signal to said data processing unit for initiating said calculations corresponding to only one move, a memory storage device for storing each calculated move and a printer unit responsive to said print command signals for printing coordinates of each calculated move, comprising: a switching device having a first portion responsive to said print command signal and a second portion connected to said start input terminal of said data processing unit for generating an additional activation signal to said start input terminal in response to each of said print command signals
whereby each print command signal activates said data processing unit to calculate an additional chess move.

### Claim 2

Apparatus for selectively enabling fully automatic play of a chess game having a data processing unit operable to automatically calculate chess moves and generating a print command signal as a result thereof, a manually operable start switch operable for activating said processing unit for initiating calculations corresponding to only one move, a memory storage device for storing each calculated move and a printer unit responsive to said print command signals for printing coordinates of each calculated move, comprising:
(a) a first switch connected in parallel with said start switch,
(b) a relay responsive to said print command signal for activating said first switch for simulating to said data processing unit activation of said start switch, whereby said data processing unit calculates another chess move, and
(c) a second switch connected in series with said relay and manually operable for selecting said fully automatic play of said chess game,
whereby, upon operation of said second switch, each print command signal activates said data processing unit to calculate an additional chess move.