RadioShack Mega 2050X

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RadioShack Mega 2050X
Radioshack mega2050x large1.gif

© Picture by http://www.spacious-mind.com

Hersteller RadioShack
Markteinführung 1994
Preis $149
Prozessor H8
Prozessortyp 8 Bit, Singlechip
Takt 7 MHz
RAM 512 Byte
ROM 16 KB
Bibliothek 2000 Halbzüge
Programmierer Morsch, Frans
Elo 1972
Rechentiefe
BT-2450
BT-2630
Colditz
Verwandt Saitek Champion Advanced Trainer, Saitek Travel Champion 2080, Mephisto Champion
Zugeingabe Drucksensoren
Zugausgabe 16 Rand-LEDs
Display 5-stellige 7-Segment Anzeige
Stromversorgung Batterie 6 x C (LR14) / Netz 9V / 300mA (plus außen)
Spielstufen 64 Spielstufen
Maße 33.5 x 25.2 x 3.7 cm
Sonstiges
langsamer Saitek GK2000 Klone


 

Levels: The 64 different play levels (from left to right) include:

  • 15 normal play levels (A1 through G2)
  • 1 indefinite response time level (H2)
  • 8 tournament levels (A3 through H3)
  • 8 sudden death levels (A4 through H4)
  • 8 beginner levels (A5 through H5)
  • 8 mate search levels (A6 through H6)
  • 16 training levels (A7 through H8)

When you install batteries or press ACL to reset the computer, it resets itself to level D1. After that, the computer remains on the last selected level.

To see the current level, press LEVEL. The computer beeps and the display shows the code of the current level.

LEVEL CODE DISPLAYS

When you select a level, the display shows information about that level.

For example, if you choose level B2, the display shows L 1:00. L means that the computer is set to a normal play level, and 1:00 (one minute) is the average amount of time the computer has to calculate each move during a game. See "Normal Play Levels (A1 through G2)", below.

CHANGING THE LEVEL

To change the current level, press LEVEL, then press the square on the game board that corresponds to the level you want. Or. press (BLACK [] ) / > or (WHITE [] ) / < until the display shows the level you want. Then press ENTER to select the displayed level.

To quickly move through the levels, repeatedly press LEVEL to skip over 8 levels at a time.

When the computer displays the level you want, simply press ENTER, then continue the current game. Or press CLEAR to remain on the last selected level. You can change the level at any time during a game.

CHOOSING A LEVEL

If you are a beginner, start out with the beginner levels (A5 through H5) or training levels (A7 through H8). The computer purposely makes mistakes on the beginner levels so you can beat the computer and learn while you play. The training levels restrict the computer's search depth, resulting in weaker play.

If you are an intermediate or advanced player, try the normal play levels (A1 through G2). These range from easy all the way up to difficult.

NOTE: When you set the level, keep in mind that when the computer has more time to think about its moves, it plays better.

Beginner Levels (A5 through H5)

The eight beginner levels let beginners and average players play (and win) more easily than in other levels. The computer makes common mistakes such as leaving pieces unprotected, failing to capture unprotected pieces, and capturing pieces while leaving the king unprotected.

Level A5 is the easiest, and the computer's playing strength increases gradually up through level H5.

The following table shows:

The square you press to select the level (after you press LEVEL) The average amount of time the computer takes to determine its move What the computer displays when you select the level

Square              Time Per move                  Display
 A5                1 Second                       bEG:  1
 B5                2 Seconds                      bEG:  2
 C5                3 Seconds                      bEG:  3
 D5                4 Seconds                      bEG:  4
 E5                5 Seconds                      bEG:  5
 F5                6 Seconds                      bEG:  6
 G5                7 Seconds                      bEG:  7
 H5                8 Seconds                      bEG:  8

NOTE: The time-per-move figure is the average amount of time the computer takes to make a move. During the opening moves of a game, the computer might move more quickly.

Training Levels (A7 through H8)

The 16 training levels are designed especially for beginners. At the lower training levels, the computer moves almost instantaneously, not allowing itself to study a move in any depth.

Level A7 is the easiest, and the computer's playing strength increases gradually up through Level H8.

The following table shows:

The Square you press to select the level (after you press LEVEL)

The number of ply the computer will search to find a move

       Square               Display
        A7                  PLY:  1
        B7                  PLY:  2
        C7                  PLY:  3
        D7                  PLY:  4
        E7                  PLY:  5
        F7                  PLY:  6
        G7                  PLY:  7
        H7                  PLY:  8
        A8                  PLY:  9
        B8                  PLY:  10
        C8                  PLY:  11
        D8                  PLY:  12
        E8                  PLY:  13
        F8                  PLY:  14
        G8                  PLY:  15
        H8                  PLY:  16

NOTE: A ply is one of your moves or one of the computer's moves. The number after PLY: shows the number of moves the computer will search ahead to find a move.

Normal Play Levels (A1 through G2)

The 15 normal play levels increase in difficulty from level A1 (the easiest) to level G2 (the most difficult).

The following table shows:

The square you press to select the level (after you press LEVEL) The average amount of time the computer takes to determine is move What the computer displays when you select the level

Square              Time Per Move                  Display
 A1                 1 second                      L  0:01
 B1                 2 seconds                     L  0:02
 C1                 3 seconds                     L  0:03
 D1                 5 seconds                     L  0:05
 E1                10 seconds                     L  0:10
 F1                15 seconds                     L  0:15
 G1                20 seconds                     L  0:20
 H1                30 seconds                     L  0:30
 A2                45 seconds                     L  0:45
 B2                 1 minute                      L  1:00
 C2                 1 minute,                     L  1:30
                      30 seconds
 D2                 2 minutes                     L  2:00
 E2                 3 minutes                     L  3:00
 F2                 5 minutes                     L  5:00
 G2                10 minutes                     L 10:00

NOTE: The time-per-move figure is the average amount of time the computer takes to make each move. During the opening moves of a game, the computer might move more quickly.

Tournament Levels (A3 through H3)

At these levels, you must make a specified number of moves within a given amount of time. If you exceed the allotted time before making the specified number of moves, the computer beeps and time flashes on the display with the elapsed time.

NOTES: When you play at a tournament level, you can set the computer's chess clock to display the countdown time instead of the elapsed time.

When you play at a tournament level, the computer times itself and you. The following table shows:

The square you, press to select the level (after you press LEVEL) The number of moves you must make within the allotted time The allotted time for the game

What the computer displays when you select the level

Square     Moves      Time Per Game             Display (Alternating)
 A3       40         1 Hour  30 Minutes        tr40/1:30:00
 B3       35         1 Hour  45 Minutes        tr35/1:45:00
 C3       40         1 Hour  45 Minutes        tr40/1:45:00
 D3       35         1 Hour  30 Minutes        tr35/1:30:00
 E3       40         2 Hours                   tr40/2:00:00
 F3       45         2 Hours 30 Minutes        tr45/2:30:00
 G3       50         2 Hours                   tr50/2:00:00
 H3       40         3 Hours                   tr40/3:00:00

Sudden Death Levels (A4 through H4)

At these levels, you must finish the game within a given amount of time. If you exceed the allotted time, the computer beeps and time flashes on the display with the elapsed time.

NOTES: When you pay at a sudden death level, you can set the computer's chess clock to display the countdown time instead of the elapsed time.

When you play at a sudden death level, the computer times itself and you.

The following table shows:

The square you press to select the level (after you press LEVEL) The maximum amount of time allowed for the game What the computer displays when you select the level

Square           Time Per Game              Display
 A4              5 Minutes                 bL  : 5
 B4             10 Minutes                 bL  :10
 C4             15 Minutes                 bL  :15
 D4             20 Minutes                 bL  :20
 E4             30 Minutes                 bL  :30
 F4             45 Minutes                 bL  :45
 G4             60 Minutes                 bL  :60
 H4             90 Minutes                 bL  :90

Mate Search Levels (A6 through H6)

The eight mate search levels allow you to set up a position and let the computer try to checkmate the opponent's king within 1 to 8 moves, regardless of the opponent's defense. The computer searches for the shortest possible solution to checkmate problems. If no checkmate is possible or the computer cannot find a checkmate, it sounds an error beep. Then you must change levels to return to normal play.

The following table shows

The square you press to select the level (after you press LEVEL) The mate problem the computer will try to solve What the computer displays when you select the level

Square               Problem                 Display
 A6                 Mate in 1               -/+ in: 1
 B6                 Mate in 2               -/+ in: 2
 C6                 Mate in 3               -/+ in: 3
 D6                 Mate in 4               -/+ in: 4
 E6                 Mate in 5               -/+ in: 5
 F6                 Mate in 6               -/+ in: 6
 G6                 Mate in 7               -/+ in: 7
 H6                 Mate in 8               -/+ in: 8

Indefinite Response Time Level (H2)

At H2 (the indefinite response time level), the computer searches until it finds a forced mate or you stop the search by pressing ENTER. Use this level to have the computer analyze complicated positions for hours or even days.

When you select this level, the computer displays 9:99:99.

To stop the search and force the computer to make a move, press ENTER.