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Sentinel: Descendants in Time Hints
What do I do with the four stands of switches?
1 of 20: When you go into a close-up of any one of the stands, you'll find you can interact with eight different switches. However, only one switch on that stand can be on at a time.
2 of 20: If you move on to another stand, you'll find you can also interact with any of the eight switches (but only one at a time). All the switches affect the area in front of it -- a series of two rows of ten lights.
3 of 20: None of the switches will activate all of the lights at the same time. They will always activate only a portion of the lights.
4 of 20: The same switch will always activate the same lights -- but a different switch will activate a different set of lights.
5 of 20: When you use one of the switches on one stand only, you'll find that some of the lights ahead of you will become red, while other areas will remain dark. The red lights indicate that some of the lights are being activated by the switch and some are not. Which lights turn red (and which stay dark) will depend on which switch is used.
6 of 20: When you leave one stand with red lights on, and move onto a second stand, using one of the switches will also affect the lights, but in a slightly more complex way. Some lights may remain dark. However, some of the dark lights may turn red. Some of the lights already red may remain red -- others may change to yellow. So, when any of the two stands each have one switch on, there will be a combination of dark (lights that are off), red and yellow lights.
7 of 20: When a third stand is used, and there are three switches on all together, there can be three different colors of lights. If a light was not yet on, it can either remain dark or turn red. If the light was previously red, it will either remain red or turn yellow. And if the light was already yellow, it will either remain yellow or it will turn blue.
8 of 20: When the fourth stand is used, the combination of lights becomes the most complex of all. If a light was dark, it can stay dark or turn red; a red light can stay red or turn yellow, a yellow light can stay yellow or turn blue, and a blue light can stay blue or start spraying sparks -- with no light at all.
9 of 20: Once you have used either three or four of the stands, you may find something interesting in the interaction between the blue lights.
10 of 20: Whenever two blue lights are located opposite to each other, they will connect with an electric blue light beam between them.
11 of 20: The goal for this puzzle is to get all the lights blue, so that all the lights will be connected with an electric blue light beam.
12 of 20: The lights cycle through from red, to yellow, to blue, to spraying sparks.
13 of 20: That means each of the lights must be activated exactly three times. Any less and the light won't be blue, and any more and the light will turn off and spray sparks.
14 of 20: To accomplish this task, each stand of switches will need to be used. You will need to select one switch, from each stand, in such a way that each light is only activated three times.
15 of 20: The first step will be to figure out which lights are activated by which switch on every stand.
16 of 20: To begin make sure that all the switches are off, so that the entire area ahead of you is dark.
17 of 20: Go to one of the stands (the central ones are easiest to see the lights, so it may be better to start there). For each switch, activate it and write down which lights are on (red), and which are off (dark). One way to do this would be to create a double column, for each switch, to represent each of the lights. Then write a suitable symbol for each light -- perhaps an "x" when the light turns on, and a "-" when nothing happens.
18 of 20: You can only check one switch at a time, so be sure to deactivate the previous switch before moving on to the next one.
19 of 20: Also, be sure that all the switches from the stand you've been working on are deactivated before moving onto the next stand of switches.
20 of 20: Once you have all the switches mapped out, use your notes to figure out which combination of lights will activate all the lights only three times. There is only one possible solution.
