Master Code is a logic puzzle.

The ?s on the bottom row represent the letters of a code formed from the list of letters shown at the top as choices (following the ?). The clues given represent guesses, each of which has a 2-number score: the first (green text in the column with two ticks at the top) is the number of letters that are found in the hidden code and are in the right position; the second (red text in the column with a tick and a cross at the top) is the number of letters that are found in the code but are in the wrong position. Each letter contributes to one score only (see below). Your objective is to find the code.

When scores for a guess are calculated, each occurrence of a letter in the hidden code and the guess contribute to one score at most, with exact matches (letter in the correct position) being evaluated first. This means that if the hidden code contains 2 Ms, while the guess contains 3 Ms, but only one of these is in the correct position, these would score as one in the correct position and one (not two) in the wrong position.

Only one solution is possible, given the guesses and scores provided.

You may, optionally, use the bottom row of ?s to record your solution. Tapping any of the letters at the top after the ? makes it turn red. When you later tap one of the ?s on the bottom row, it changes to the letter coloured red at the top. You can change the letter shown in any of the bottom row positions as many times as you like before pressing the Solve button. Pressing this reveals the correct solution.

This puzzle can be played as a game if two or more people can see the screen. The winner is the first player to give the correct answer.

Levels and times

There are three levels (1-3). The default level is 1.

  • At level 1, there are 5 letter choices and 4 positions.
  • At level 2, there are 6 letter choices and 4 positions.
  • At level 3, there are 7 letter choices and 5 positions.
The current level is shown near the bottom-right corner, with '+' and '-' buttons at the sides, which allow you to change the level.

When the clues are presented, a timer starts (bottom left), which initially has a green background. For each level, there is a default time suggested, after which the background of the timer changes to red. The time continues to count up, a second at a time, until the result of the final line is displayed, even when you have exceeded the suggested time. The suggested times are 60s for level 1, 90s for level 2 and 120s for level 3.

Press the New button at any time for a new puzzle, using the current level setting.

Terms of use

This software may be used for personal purposes only.  It may not be used for commercial purposes.

The software, code and script of this application may not be copied or be distributed to others.

The software, code and script may not be altered in any way.

Copyright of the software, code and script, and its help documentation, is held by TopAccolades Limited.  No part of the software, code, script or documentation may be copied or used in another application or document.

Although every effort has been made to ensure that this software functions as intended, TopAccolades Limited provides no warranty of merchantability, or fitness for a particular purpose, in relation to this application or its support.

TopAccolades Limited shall not be liable for any damages whatsoever arising out of the use of or inability to use this application or the provision of or failure to provide support.

Copyright TopAccolades Limited
www.topaccolades.com

Version: 3.0 (20170327)
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