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• Swap rule
  ...wapped, whereas moves on the first player's own edge (except in the obtuse corner) are too weak and should not be swapped. a1 and b1 are provably losing and
  9 KB (1,588 words) - 14:53, 18 November 2023
• Basic (strategy guide)
  ...t opening move is to play in one of the acute corners (a1 and the opposite corner) and is one of only two opening moves that are a proven loss (without the s # Don't swap any of Vertical's border row moves except for the obtuse corner.
  15 KB (2,693 words) - 23:24, 12 October 2022
• Minimaxing
  Consider the following situation, which is fairly common in the obtuse corner.
  5 KB (895 words) - 02:18, 5 October 2023
• Climbing
  ...ecial case to consider is when the 3rd row ladder is approaching an obtuse corner and there is very little space. Consider the following example, with Red's
  14 KB (2,655 words) - 12:53, 27 April 2024
• Handicap
  ...m the win rate evaluations of AI bots) suggests that c3 and the 2-2 obtuse corner (shown below) give Red approximately a 0.25 move advantage, at least for bo
  11 KB (1,806 words) - 03:07, 5 April 2023
• Opening
  ...d on the first row, adjacent to a [[friendly]] edge, and not in the obtuse corner. Players can also look at winning opening moves for [[small boards]]. * [[Obtuse corner opening]]
  2 KB (325 words) - 18:04, 19 March 2023
• Solutions to puzzles
  ...but the refutation is subtle and depends on play in the lower-left obtuse corner: Therefore, whatever Red can do, Red must do in the lower right corner. Here is how Red can win:
  34 KB (6,464 words) - 23:41, 14 February 2024
• Theory of ladder escapes
  ...one of these can invalidate the ladder: even if we fill in the bottom left corner of the triangle, The following template is useful for obtuse corners:
  123 KB (22,870 words) - 19:37, 2 April 2024
• Joseki
  ...rowed from the game of Go because of the strong analogy between Hex and Go corner play. There are certain sequences of moves played near [[Board#Corners|corn ...final position is reached, player A has a fixed escape on one side of the corner and player B has a fixed escape on the other side (the second player's esca
  10 KB (1,802 words) - 20:09, 9 March 2024
• Board
  ...above illustration, a1 and g7 are the acute corners, and a7 and g1 are the obtuse corners. ...ounterclockwise starting from an acute corner. This means that if an acute corner is at 10 o'clock, the top and bottom edges are red and the left and right e
  4 KB (749 words) - 20:53, 28 December 2020
• Tidiness
  === Acute corner example === === Obtuse corner example ===
  3 KB (510 words) - 03:21, 16 June 2021
• Bridge ladder
  ...d is the defender. This is typical for bridge ladders approaching an acute corner. ...the other hand, especially when the bridge ladder is approaching an acute corner, bottlenecking sooner also keeps the Blue further from the blue edge. For e
  7 KB (1,253 words) - 03:30, 11 September 2021
• FIFI25 vs. murasawa, October 2021
  ...​ This works with the swap piece, since normally play towards an obtuse corner would favor whoever is on the [[short diagonal]], but a11 means it would fa
  12 KB (2,029 words) - 23:16, 28 August 2022
• Corner move
  === Acute corner === ...mportant to occupy several corners than to have several stones in the same corner.
  4 KB (832 words) - 18:36, 24 February 2022
• Openings on 11 x 11
  ...ue usually plays the 4-4 opening at both obtuse corners, or the 4-4 in one corner and 5-5 in the other: ...y way to play this opening. Red could play blocking moves to Blue's obtuse corner moves:
  11 KB (2,022 words) - 14:15, 22 October 2022
• Question
  == Example: Obtuse corner == In this situation, Red has a 2nd row [[ladder escape]] in the corner, and Blue has a potential 2nd row [[ladder escape fork]]. However, Blue can
  6 KB (1,073 words) - 16:05, 27 November 2022
• Openings on 19 x 19
  * While [[corner move|corner moves]] are still good moves, playing near the middle of your opponent's 4t ...often means playing stones that "work well" with existing stones near the corner. On 19×19, there is room to start a local fight near the middle of th
  31 KB (5,546 words) - 14:54, 18 November 2023
• Strategic advice from KataHex
  ...lready; one of the most notable is the bots' preference for the 4-4 obtuse corner over the 5-5. Many old strategy guides have become at least partially (if n ...is game], 11. e6 was a mistake; the best move was to respond to the obtuse corner joseki with i4. Because Black did not play i4, White was able to play 12. i
  21 KB (3,605 words) - 16:08, 14 January 2024