The best technology for playing chess from year 1979!


The one picture above has the serial number 173357 and was bought in Zürich Switzerland.

There is 3 models available

  • A (07/1978) has 16 keys on the keyboard and for 1.d4 d5 2.c4 c6, will respond 3. Cc3
  • B (11/1978) has 16 keys on the keyboard and for 1.d4 d5 2.c4 c6, will respond 3. Cf3
  • C (05/1979) has only 12 keys and has an optimized software.


  • Model: Chess Challenger 10
  • Manufacturer: Fidelity International
  • Year: 1979
  • Estimated ELO rating: 1200
  • Levels of play:10
  • Processor: Z80A @4 MHz
  • Programmer: Ron C Nelson
  • Type: Keypad / Calculator with magnetic pieces
  • Dimensions:    33.3 x 21.4 x 2.9 cm.
  • Memory:    4 KB ROM, 0.5 KB RAM
  • AC – adapter connected directly to computer – non-removable
  • price: 450€

At the time, Fidelity was located in Chicago, IL, USA – 5244 W. Diversey Ave
The warranty was 90 days. After 90 days you had to ship the unit plus a $35 money order to them.

The manual indicated that the Chess Challenger could be upgraded after June 1, 1977 by sending the unit back to them and a money order for US$ 75.00

"...the game analyzes each position and, after considering all possible chess moves, makes a decision which is determined to be the best available move.
The sophisticated program used in this decision-making process is thoroughly tested, and each game manufactured acts like all other games. Thus, CHESS CHALLENGER cannot make a fundamental error.
Initially you may find that CHESS CHALLENGER may appear to be making an illegal move. However, this is highly unlikely."

Fidelity Chess Challenger 10. Model CCX.  The manual indicates that level 7 is for postal chess (by mail) and the average response time is 24 hours!

Here&39;s a complete list of the levels of play with the average response time for A or B model, C being provided for reference in bold:

  • CL1 - Beginner -          5 Seconds (3 Seconds)
  • CL2 - Intermediate -     15 Seconds (10 Seconds)
  • CL3 - Experienced  -     35 Seconds (50 Seconds)
  • CL4 - Advanced -       1:20 minutes (1:20 minutes)
  • CL5 - Superior -       2:20 minutes (3 minutes)
  • CL6 - Mate in 2 -        60 minutes (6 minutes)
  • CL7 - Postal chess -     24 hours (12 minutes)
  • CL8 - Expert -           11 minutes (20 minutes)
  • CL9 - Excellent -         6 minutes (70 minutes)
  • CL10 - Tournament -       3 minute (15 minutes)


20140216_200348Key description

  • RE reset
  • switch sound off
  • CL clear
  • EN enter
  • LV level
  • DM double move
  • PB Problem
  • PV Verify




Here is the opening move of the model CC10 B

  • 1. e4 e5 2. Sf3 Sc6 3. Lc4 Lc5 4. c3 Sf6 5. d4 exd4 6. cxd4 Lb4+
  • 1. e4 e5 2. Sf3 Sc6 3. Lb5 a6 4. La4 Sf6
  • 1. e4 c5 2. Sf3 d6 3. d4 cxd4 4. Sxd4 Sf6 5. Sc3 g6 6. Le2 Lg7
  • 1. e4 e6 2. d4 d5 3. e5 c5
  • 1. e4 e6 2. d4 d5 3. Sc3 Sf6 4. Lg5 Le7 5. e5 Sfd7
  • 1. e4 e6 2. d4 d5 3. Sc3 Sf6 4. e5 Sfd7 5. any c5
  • 1. d4 d5 2. c4 e6 3. Sc3 Sf6 4. Lg5 Sbd7
  • 1. d4 d5 2. c4 c6 3. Sf3



You might like also

Nintendo Officially Announces The SNES Classic Edition
    The list of 21 onboard games is absolutely fabulous! …
942 Days ago
3 New Zelda Quests following a link to the Past
These are Zelda's amateur game, entitled Return of the Hylian, made in C++ and with the SDL libraries. The Legend of Zelda: Return of the Hylian / Oni-Link Begins / Time to Triumph is a trilogy of fan games that take place after the events of A Link to the Past. Originally made in French in C++ by Vincent Jouillat, it was translated to English by Lobaluz. The games utilizes many graphics and pieces of music from A Link to …
2137 Days ago
Play The Legend of Zelda for free and legally
  Zelda Classic is a tribute to the greatest video game of all time: Nintendo's The Legend of Zelda. It has been developed into an exact replica of the NES version that we all know and love. Beyond that, Zelda Classic allows the development of new quests that can use either the traditional graphics or enhanced graphics, as well as new enemies, items, and challenges. Though it was started as a basic Legend of Zelda clone by programmer Phantom Menace …
2137 Days ago
40 Years Of Console Prices, Adjusted For Inflation
Reddit user Auir2blaze has run historical console launch prices through an inflation adjustment calculator (which normally use dollar strength and the cost of basic goods over time) to reveal how expensive, relatively, every major console since the 1970s really was. I made this graphic showing how much classic consoles would cost in today's dollars …
2171 Days ago
Nintendo Game & Watch Manhole (1981)
Game & Watch or G&W is a line of handheld electronic games produced by Nintendo from 1980 to 1991 and created by game designer Gunpei Yokoi, each Game & Watch features a single game to be played on an LCD screen in addition to a clock and/or an alarm. …
2378 Days ago
649 Pokémon in a giant Color Wheel
649 Pokémon organized by color in this great image by Redditor _Avalon. via Neatorama …
2386 Days ago
NEOGEO X Gold Entertainment System review
The NEOGEO X Gold entertainment system comes complete with the NEOGEO X Station, the NEOGEO X Handheld with 20 pre-loaded NEOGEO classic titles, and the NEOGEO X Joystick. In addition to coming pre-loaded with 20 NEOGEO classic titles, the NEOGEO X Handheld device features a crisp 4.3-inch LCD display, an expandable game card slot, internal stereo speakers, and a 3.5mm headphone jack for a personal gaming experience you can take anywhere. …
2441 Days ago
NEOGEO X GOLD ENTERTAINMENT SYSTEM Announced for Worldwide Distribution Tommo Inc. sets release date and price for revolutionary gaming "system within a system" Los Angeles, Calif. - August 13, 2012 - Tommo, Inc., in partnership with SNK PLAYMORE, today confirmed that the NEOGEO X GOLD entertainment system is scheduled for a worldwide release this December. Following the 20th anniversary of the ground breaking NEOGEO AES console, the NEOGEO X GOLD entertainment system provides players with all of the features of …
2668 Days ago
Tetris Radica Plug and Play Game 2 Players
Tetris is a puzzle video game originally designed and programmed by Alexey Pajitnov in the Soviet Union. It was released on June 6, 1984. Radica Games Limited (founded in 1983) is a company that produces electronic games. On October 3, 2006, Mattel, Inc. announced the completion of their acquisition of Radica. The Radica Tetris unit comes with two specially designed controllers containing several variants of the classic Russian puzzler: Tetris, Battle Tetris, Garbage, Timed and Hotline. Two player frenzy-plug in …
3054 Days ago
Cheetah “Characterstick” Bart Simpson Nintendo NES Joystick
Cheetah’s Character Stick of Bart Simpson. A rare item for Nintendo NES collectors! (but valued at $15 to $20) A and B buttons in front of the joystick, and start and select buttons in the back. …
3054 Days ago