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X wing sudoku technique10/11/2023 Behind that is the main conference room, known as the “JFK room.” To the right are a smaller conference room and two soundproof “breakout rooms.” To the left is the “watch floor,” a 24-7 operations center. The complex is staffed around the clock by military and civilian personnel who monitor breaking developments worldwide. Presidents used the complex for secure video conferences before such tech became more portable. 11, 2001, terrorist attacks, the White House did a significant Situation Room update, along with a broader upgrade to presidential communications on Air Force One and the presidential helicopter. But it wasn’t exactly comfortable: Nixon administration national security adviser and then Secretary of State Henry Kissinger described the space as “uncomfortable, unaesthetic and essentially oppressive.”Īfter the Sept. Kennedy believed there should be a dedicated crisis management center where officials could coordinate intelligence faster and better. The hush-hush complex was created in 1961 by the Kennedy administration after the Bay of Pigs invasion. Note the following: All possible locations for 3s in row 9. Illuminated signs flash green for declassified and red for classified. Because of symmetry, one can exchange columns for rows in this rule. Even the contractors working on the renovation had to get temporary security clearances. Anyone listening in on classified briefings needs clearance. (There are cubbies to stow phones near a door leading outside, where a baggie with some cocaine was found earlier this year.)Īccess is tightly controlled and generally restricted to the president’s national security and military advisers. The whole space has that new car smell.īut there are still plenty of landline phones: No cellphones are allowed in the secure space for security reasons. See-through glass offices fade to opaque with the press of a button. ![]() Old floors, furniture, computers and other tech were stripped out and replaced with pristine mahogany paneling from Maryland, stonework from a Virginia quarry, LED lights that can change colors and flat-screen panels. The renovated space has a modern-but-vintage vibe. “My thanks to everyone who worked on this incredible facility. “Folks, the newly renovated White House Situation Room is up and running,” Biden said in a post on X, formerly Twitter. “He loved it, he thought the update was fantastic,” Gustafson said. President Joe Biden got a tour on Tuesday and then received an intelligence briefing in the space, said Marc Gustafson, the Situation Room director. The White House opened the classified space to a group of reporters this week for a rare visit to check out the new look. The latest redo was no small update: The total gut renovation took a year to complete. Where President Lyndon Johnson went over Vietnam War plans. Where President Donald Trump monitored the 2019 operation that killed Islamic State leader Abu Bakr al-Baghdadi. Where President Barack Obama and his team watched the raid that took down al-Qaida leader Osama bin Laden in 2011. If you can find two columns with only two identical positions for a given pencil mark, then the corresponding rows intersecting these positions can have all other candidates safely removed.These are rooms where history happens, where the president meets with national security officials to discuss secret operations and sensitive government matters, speaks with foreign leaders and works through major national security crises. Of course, this whole concept can be rotated. ![]() In Sudoklue, the same pencil mark highlighting feature that helps me find hidden singles and omissions, can make X Wings easier to spot as well. Knowing that, all other 4s in the columns are not possible, and can be erased (erase all the pink 4s).Īgain, this is one of those hard to find methods. Based on what we said above, the 4s in these columns must exist where these two rows cross - that is, where the blue 4s are. Now if we think about this, we know that each of these rows has to have a 4, right? And we also know the 4s cannot be on top of each other, because that would put two 4s in the same column.īecause of this, we can safely assume that either the light blue cells or the dark blue cells must be 4s.Īrmed with this, let's zoom out all the way and shift our focus to the columns involved here (indicated with arrows below). Next, if we zoom out a bit, we can see that another row, two rows down, has the same two 4s, and in the same two spots: Here we see a row containing exactly two 4s: If you can find a row that contains the same pencil mark in exactly two spots, as well as another parallel row that mirrors it - containing the same pencil mark in only the same two spots, then you can use this information to eliminate similar pencil marks in the columns passing through those spots. It starts with either two parallel rows or two parallel columns. An X Wing is a technique for removing candidates (pencil marks).
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