Programming of matrices with points

We need to create a test on the scope of attention. “Remember and place dots” in electronic form. The bottom line is this: There are eight matrices of 4x4 dimension in each matrix randomly placed points. On the first sheet 3 points, on the second sheet 4......, in the last 9. The dots are arranged arbitrarily in cells. When the program is launched again, the location will be different – randomly. Each sheet with dots is shown for 1-2 seconds, after this time a clean sheet with a 4x4 matrix appears in it (as in a naval battle) it is necessary to note the points where they stood in the sheet that appeared for 1-2 seconds. If I get the mouse right, then a dot appears, if the red cross is not correct. The player’s task is to put the points right. If the mouse clicks correctly in the place where the dots were, then the next sheet appears, where there are more dots (if the first sheet is 3 dots, then the next 4 dots). If not correct, crosses will be displayed (as in a naval battle – past) in places where there are no points and so on until all points are correctly opened. At the end of it. How much time is spent and how many errors are in each page.
What programming language do you write and how do you deal with it? The matrix should be on the whole screen. Payment by agreement on a bank card.