LMI Screen Test #5 : 20th - 23rd Nov

Scoring

Each puzzle has 25 base points. If the puzzle is submitted correctly before the time limit, you get 25 points.
Additionally, you get bonus points depending upon when you submit the puzzle. If a puzzle has X seconds time limit, and you submit correctly at Y seconds, you will get (X – Y) points as bonus.

Please note that bonus points are computed only after you click "Next Puzzle". Just selecting the option key is not enough. So to get maximum bonus, select the correct option key and click on "Next Puzzle" as soon as you know the answer. Also, you won't be able to change the answer key after clicking on "Next Puzzle"

Penalties

Negative points ranging from -25 to -50 per puzzle will be given for incorrect submissions based on how many incorrect submissions for all the answer options have been submitted by all players for that specific puzzle.

Sequence of puzzles

All the 100-seconds puzzles will appear first, in the order shown on the left. Then the 150-seconds puzzles will appear, again in the order shown on the left.

Suggestions

• Monitor – Since the puzzles will be projected on your computer monitor, it is important to have a decent size monitor to avoid scrolling.
• Full Screen – If your monitor is small, you should consider using Full Screen mode. The flash submission system has a Full Screen Button.
• Browser – Some browsers clutter the screen leaving less space for webpages. For the Screen Test, You should consider using Google Chrome or Internet Explorer 9 or Firefox which leave maximum space for web pages.
• Mouse – Since all the answering is to be done with ‘mouse’, it is important that you have a ‘mouse’ which works nicely.

General Screen Test Rules

• Each puzzle will have a time limit, and it has to be solved within the specified time limit.
• There will not be any Puzzle Booklet to download. All the puzzles are to be solved on screen.
• Participants are allowed to draw images / grids on paper and answer on the screen. There is no provision to draw / type / take notes on screen.
• Each puzzle will have certain number of answer options. Participants have to select the answer option using ‘mouse’. Typing is not allowed / needed in ST5.
• There will be 20 puzzles, and they are to be solved within 45 minutes.
• First 10 puzzles will have a time limit of 100 seconds each. Last 10 puzzles will have a time limit of 150 seconds each.

About instructions

The instructions for example puzzles and test puzzles are absolutely same. If you have read the instructions while viewing examples, you don’t need to read them again while taking the test.
• All puzzles, including the Instructionless, in this Screen Test is based on a theme i.e. maximum. The answer option will always correspond to maximum of "something". We have underlined that "something" in each puzzle.
• Some puzzles may have part of instructions in small font. The text in small font is for completeness of instructions, and should be known to most solvers.

Puzzles types and examples

In the examples below, the answer key is hidden by default, so that you can solve the puzzle on your own. You can see the answer key by "clicking" on it. [ If want to print this page with all answer keys, you may want to use this link instead. ]

Time limit - 100 seconds Base points - 25 Max Shades Which grid has maximum number of shaded cells? The correct answer for the example is C (highlight to view). Max Perimeter Which grid has maximum perimeter? The correct answer for the example is B (highlight to view). Max Knights Which letter is attacked by maximum number of knights? A knight moves 2-steps in one direction, and 1-step side-way, always moving orthogonally. A knight may jump over another knight. The correct answer for the example is A (highlight to view). Max Triangles Which figure has maximum number of triangles? The correct answer for the example is A (highlight to view). Max Equation Which equation yields maximum output? Only addition and subtractions are used. The correct answer for the example is A (highlight to view). Max Circles Which figure has maximum number of circles? The correct answer for the example is D (highlight to view). Max Skyscrapers From which direction, among the marked ones by letters, do you see the maximum number of skyscrapers? Taller skyscrapers hide smaller ones. The correct answer for the example is B (highlight to view). Max Turns Which light ray takes maximum number of turns before exiting the grid? The grid has 2-sided diagonal mirrors. Upon hitting a mirror from either side, the ray makes 90 degrees turn and keeps moving until it hits another mirror or exits out of the grid. The correct answer for the example is C (highlight to view). Max Sums Shade exactly one cell in each row and each column. What is the maximum possible sum of numbers in the shaded cells? The correct answer for the example is 13 (highlight to view). Max Rotation All images are rotated clock wise. Which image is rotated the maximum? The correct answer for the example is C (highlight to view).

Time limit - 150 seconds Base points - 25 Max Weights Which letter has maximum weight in the standard Weights puzzle? Assign digits from the given range to each weight. The horizontal rod indicates that there is equal torque on both sides. The torque of each weight is its weight times its distance from fulcrum. Assume that the strings and rods have negligible weight. The correct answer for the example is C (highlight to view). Max Total Starting at the top and moving to adjacent numbers on the row below, create a path to the bottom of the pyramid. What is the maximum possible sum of numbers along the path? The correct answer for the example is 20 (highlight to view). Max Squares Which letter belongs to maximum number of squares? The correct answer for the example is C (highlight to view). Max Mines What is the maximum number of mines that can be put in the grid, following standard minesweeper rules? In Minesweeper puzzle, each digit inside the grid represents the number of mines around the 8 cells. Mines are not allowed in cells with digits. The correct answer for the example is 5 (highlight to view). Max Solutions Which of the following standard Sudoku grid has maximum solutions? In a Sudoku grid, 1 through 6 (1 through 4 in the example) should appear exactly once in each row, in each column, in each outlined region. The correct answer for the example is C (highlight to view). Max Shapes Which shape appears maximum number of times? Shapes can be rotated / reflected. Cells can be used multiple times. Black cells can not used while placing the shapes. The correct answer for the example is S (highlight to view). Max Tiles Which Tile appears the maximum number of times? Tiles cannot be rotated or reflected. Read clarification on rules. The correct answer for the example is D (highlight to view). Arrows Which letter is pointed by maximum number of arrows? The correct answer for the example is B (highlight to view). Max Distance Which letter is at maximum distance from the marked circle? The correct answer for the example is D (highlight to view). Instructionless Two examples will be given. Based on the examples, you need to determine the rules of the puzzle and choose the answer.

How does the Screen Test interface work?

The easiest way to understand "how the Screen Test works" is to "do the Demo". Here is the link. If you have any questions after doing the demo, please ask in forum.

Here is the summary of how it works, for those who are not doing the demo. There are 3 modes in the Screen Test

• Viewing the examples - You just view the rules and examples
• Taking the actual Test
• Reviewing your submissions - only after you take the test

To take the actual test,
• you need to login to the screen test link
• Click on "Start LMI Screen Test #5" when it is enabled.
• At this point, the example and the rules for the first puzzle will be shown for 10 seconds.
• After 10 seconds is over, the first puzzle will be shown on the screen, with several options as answer keys.
• You need to solve it as soon as you can, select the answer option, and click on "Next Puzzle".
• You get bonus only when you click on "Next Puzzle", not by just selecting the correct answer key
• After you click on "Next Puzzle" or the timer runs out for that puzzle, the example and rules for second puzzle will be shown for 10 seconds
• This cycle will repeat for all 20 puzzles.

Skip Puzzle

Based on a suggestion in forum last screen test, we have added an option to skip a puzzle. Please remember that when you skip a puzzle, you cannot come back to it at a later point. Also each puzzle has their own time limit. If you skip one puzzle, you are not going to get extra time for another. You should skip a puzzle only when you are certain that you can't solve the puzzle and you don't want to attract penalty by selecting a wrong answer.