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Radio Shack e-Chess (2001)

Your Radio Shack E-Chess computer is one of the most versatile chess computers available. Your computer can play chess at a relative strength of 1700.

MAIN RADIO SHACK E-CHESS GAME CHARACTERISTICS:

    • 8 Teaching Modes — help you learn how to checkmate an opponent’s king.
    • 73 Chess Play Levels — let you match the level of difficulty to your skill level.
    • Opponent Selection — lets you play against the computer or another person, or have the computer play itself.
    • Chess Clocks — show the elapsed time for each move during a game or the total game time.
    • Liquid Crystal Display — shows current move, piece position and verification, level, position set up, and chess clock information.
    • 34-Strategy Opening Book Library — contains most major opening strategies, so the computer can respond more rapidly during a game’s opening moves. This speeds up play and helps you play more professionally.
    • Undo — lets you take back the previous move, to help you improve your game.
    • Rule Enforcement — the computer prevents illegal moves like a game referee, to help beginners learn the rules.
    • Power Off Option — lets you turn off the computer without interrupting the game in progress, so you can continue playing later.
    • Help — shows you all legal moves you can make during a game.
    • Move Suggestion — lets you ask the computer to suggest your next move, teaching you the best response to an opponent’s move.
    • Great Game Library — the computer contains 16 historic games in its memory, letting you practice your chess skills against the moves of the greatest players on earth.
    • Problem Setup — lets you set up special chess problems so you can practice solving problems published in newspapers, chess literature, or history books.
    • Contrast Adjustment — lets you adjust the display contrast to the desired level for easier viewing.

Excerpts taken from “Radio Shack e-Chess” User Manual.

Ron Nelson reported that he spent 9 months developing a new 4 Bit chess program which became the foundation for many future Excalibur models as well as its continued use by Excalibur’s successor EB Electronics. The first 4 Bit Model 375 Excalibur LCD Chess was launched in the year 2000. This program can also be found inside many chess computer models sold by other companies such as Radio Shack.

This 4 Bit program seems to be per Nelson’s comments an even further slimmed down version of the original Nelson H8 program, compressed into this much smaller hardware and trimmed with many of the features of the original stronger H8 program removed in order to squeeze a workable chess program into the lesser ram space available on the 4 Bit hardware. This included removal of many of the more sophisticated chess routines used in stronger chess programs such as Nelson’s Attack Bit Map Tables, much smaller opening books, removal of any pondering routines and excess search routines.

Nelson commented he had a great interest in developing a capable program suitable for any beginning or hobby chess player and thereby finding larger outlets of distribution for the Excalibur chess products. Excalibur E-Chess, a very playable and capable chess program ideal for most players was one of the many creations that followed as a result of this nine month period of new program development in 1999.

Radio Shack e-Chess Model 60.2845 was sold to Radio Shack by Excalibur. Excalibur sold e-Chess as Model # 410. e-Chess was manufactured for Excalibur Electronics in the Shenzen Province of China.

The chess program is Ron Nelson’s Version 3.8 24K 4 Bit program which comprised of his 16K 4 Bit chess program plus 8K additional programming. Part of this additional 8K programming was to create a Universal I/O to allow easier adaptation to other chips used in other Excalibur chess computer models.

For reading of Nelson comments go to: Hiarcs Forum

Information

Radio Shack e-Chess (2001)

Radio Shack e-Chess (2001)

Button Controls

Radio Shack e-Chess (2001) Button Controls

Model: 60-2845

Model: 60-2845

User Manual

Radio Shack e-Chess (2001) User Manual

73 Levels of Play!

Technical Specifications

Manufacturer

Programmer

Radio Shack/Tandy Corporation

Ron Nelson

Year:

2/1/2001

Manufacturer ELO

1700 USCF

Original Price

$29.95

Wiki ELO:

N/A

Model #:

60-2845

My Serial #:

N/A

Processor Type

Speed

ROM

RAM

SAMSUNG SAM47 S3C72P9

4 Bit Single Chip

1.5 MHz

(32 KB ROM) 24 KB (16K program + 8K additional code)

528 Byte (1056 x 4 Bit)

Battery Operated:

3 x (AA)

Adapter Option:

N/A

Display Type:

Dot Matrix LCD

Board Type:

LCD Chess Board

Board Size:

2” x 2”

Overall Size:

5.7/8” x 3.7/8” x 1”

Move Entry

Options Selection

Playing Levels

Opening Library

Take Back Moves

LCD Chess Board

Push Button Controls

73

34 Openings

26 Half-Moves

Position Setup/Ver.

Display Move Info/Analysis

Solve Mate

Save Game/ Ponder

Hint/Teach Mode

Yes / Yes

Yes / Yes

Mate in 3

Yes / No

Yes / Yes

Active Level:

23 (31 seconds)

Tournament Level:

72 (129 seconds)

Infinite Level:

73

Game Information

Schachcomputer.Info

The Spacious Mind

Active Games (30s:1 or 60/30 etc.)

Active Games (30s:1 or 60/30 etc.)

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Tournament Games (180s:1 or 40/2 hrs)

Tournament Games (180s:1 or 40/2 hrs)

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