Problem: Article: The best way to prepare you to row on a boat in the water is by building your body strength on a water rower machine. This machine will target all the areas on your body that you will be using when in an actual boat: your legs, core, and upper body. You can purchase one of these machines for home use, or you can find them in many gyms or work out facilities. There are many exercises you can do to strengthen your core and abs. These exercises will help target not just your core, but your upper body as well: Plank: Lie face down on the ground. Place your elbows on the ground underneath your shoulders with your forearms extended straight in front of you. Then, left yourself up on your toes and your forearms, keeping your body straight. Hold this position for 30 seconds to two minutes, increasing the amount of time you hold as you get stronger. Side plank: Begin in the same position as the plank and lift yourself up onto your arms and toes. Then, slowly turn your body to the side, so that your weight is resting on one foot and one arm (either your left foot and arm or your right). Make sure your body is in a straight line and you aren't leaning over. Hold this position for 30 seconds to two minutes and then switch to the other side. V-sit hold: Sit on the ground with your legs straight in front of you and your upper body straight. Then, extend your arms out in front of you and slowly lift your legs off the ground. As you lift your legs off the ground, keep them straight, and slowly lean your upper body back, making sure to keep your back straight as you do so. Hold this position for 30 to 90 seconds. Your lower body is important when it comes to rowing because 60 percent of the strength you use to row should come from your legs. There are many exercises you can do to improve lower body strength, but a few to start with are: Bridge: Lie on your back with you knees bent and feet flat against the floor, hip width apart. Then, slowly lift up your butt, using your glutes, until you have a straight line going from your shoulders to your knees. Hold the position for one to two minutes, or lower your butt and raise it again at a quick pace without letting your butt touch the ground. To make this position even harder, you can extend one leg straight out, keeping it in the air as you raise your butt. Barbell squat: Stand with your feet shoulder width apart and place a barbell behind your head across your shoulders and grip it with your hands. Squat like you are about to sit down, keeping your upper body straight and your chest out. Go as low as you can and then, stand back up and repeat. Do three sets of 12 reps. Barbell/dumbbell lunges: Start by standing up with your feet together. Position the barbell as you did before, or hold a dumbbell in each hand. Then, take a step forward, bending your front knee so it creates a right angle, and lowering your back knee so that it almost touches the ground. Then, bring your back foot next to your front foot and repeat on the other side. You can do these in place, or you can do them walking. Try to do 50 yards of walking lunges. Most rowers actually focus more on their core and legs because that is where most of their strength will come from, but it can be beneficial to improve your upper body strength as well. Along with doing planks, you can do a few of these exercises to improve your arm muscles: Plank push ups: Start in the plank position, but instead of putting your elbows on the ground, you will put your hands underneath your shoulders. Push up to a plank position, with your weight on your hands and toes. Then, lower your body, keeping your elbows close to your body (you don't want them to push outwards away from the body). Don't allow your body to touch the floor, and then push yourself up again into that plank position. Reverse grip pulldowns: This exercise requires a pulldown machine. Sit at the machine and reach above you with an underhand grip to reach the pulldown bar. Then, slowly pull it down, using your upper body strength rather than momentum, until the bar is in line with your chest. Then, slowly allow the bar to go back to its starting position and repeat. Barbell rows: This is a great exercise to target the muscles you'll need for rowing. Position your hands shoulder width apart on a barbell on the ground with an overhand grip. Bend your body over so that your back is flat, in a table top position and your knees are straight or slightly bent, depending on your flexibility. Then, lift the barbell up to your chest, keeping your back flat, and lower back down (try not to let it touch the ground). Do five sets of five reps and try to place as much weight on the barbell as possible.
Summary: Practice on a rowing machine. Strengthen your core. Target your lower body. Strengthen your arms.

Problem: Article: Remember, you have to pay attention to three separate rules when inputting numbers, but this is to your advantage. Very few numbers satisfy all three conditions, and this is where your solution comes from: Only one of each number in each horizontal row. Only one of each number in each vertical column. The answer of each cage matches the number and mathematical symbol in the upper left corner. Take all of the basic boxes without mathematical symbols first, like "2," or "9" and simply fill in the number. If the box just says two, put in a two. This will take care of the basics and start to reveal other answers. This will depend on the size of the board, but you'll still find them easily with some practice. For example, imagine a 4x4 puzzle. Take a two box cage for "3-." Knowing that you only have 1, 2, 3, and 4 to choose from, you know that there is only one pair that subtracts to three, 4 and 1. While you might not know the order, you do know these are the only two numbers in this row. Make a note of them for later. Every Kenken has some of these "easy" boxes to get you started, such as: Multiplication/division by grid size and odd numbers usually only has a few answers. Examples include "4x" in a 4x4 grid (1 & 4), "15x" in a 6x6 grid (3 & 5), etc. Two-box addition cages, usually for 3+ or 4+ (can only use 1, 2, and 3). There are a lot of places where two numbers will equally plausible, as you don't know enough about the rest of the board to figure out which number is correct. Write small notes in the upper right corner of the box, allowing you to see which numbers could be in each place, and which numbers have to be there. For example: In the previous step, you noted that you need a 4 and a 1 to make 3-, but you didn't know what order. But if the same row as the top box already contains a 4, then suddenly it's all clear. The 1 goes on top, and the 4 goes below, making your "3-." For example, imagine a vertical row that already contains a 4 and a blank in the top boxes. The bottom two boxes are a cage for "3+," which can only be created with a 1 and a 2. This means the second box must be a 3, even though you don't know what order the 1 and 2 are. The finished cage would look like this: 4 3 1 or 2 1 or 2
Summary:
Always check all three sets of clues before putting in a number. Fill in blank single boxes first. Find and mark the boxes that only have one potential answer. Write smaller numbers in the upper right corner to take notes, crossing them off as they are eliminated. Use groupings of potential numbers to fill in the areas you're unsure of.