Selinger: /* Obtuse corner example */ Mention flank.

2021-06-16T03:21:16Z

‎Obtuse corner example: Mention flank.

Selinger: Added category

2020-12-28T19:22:47Z

Added category

Selinger: Created a page for tidiness

2020-12-28T18:32:32Z

Created a page for tidiness

New page

'''Tidiness''' means not leaving loose ends that could benefit the opponent later. It is not a reaction to a specific imminent threat, but a basic preventative measure that decreases the likelihood of bad things happening in the future. If a player can make a move that carries little cost or risk, but takes away some opportunity from the opponent, it is ''untidy'' not to make the move. Making such a move is also called ''tidying up''.

== Examples ==

=== Acute corner example ===

Consider the following situation, where Red has just played 1 to connect her group to the bottom edge.
<hexboard size="4x5"
coords="none"
edges="bottom right"
contents="B c2 R d1 1:d2"
/>
Blue would like to play elsewhere on the board. However, this would leave Red with a 2nd row [[ladder escape]] along the bottom edge. While this ladder escape may not look immediately threatening to Blue, it would be untidy to just leave it unattended. Instead, Blue tidies up by first playing 2, which forces Red to reconnect, say at 3.
<hexboard size="4x5"
coords="none"
edges="bottom right"
contents="B c2 R d1 1:d2 B 2:c3 R 3:d3"
/>
Now Blue has taken away Red's ladder escape and is free to move elsewhere. In fact, Blue also gained a small amount of [[territory]].

To illustrate that this can make a difference, consider the following position, with Blue to move. In this situation, "a" is winning, but "b" and all other moves are losing.
<hexboard size="6x6"
coords="none"
edges="all"
contents="R b3 e3 e4 B d3 d4 E a:d5 b:e2"
/>

=== Obtuse corner example ===

Red has just played 1, threatening to connect to the bottom edge. Blue responds at 2. This will result in a 2nd row [[ladder]] along the bottom edge.
<hexboard size="5x5"
coords="none"
edges="bottom left"
contents="R d2 e2 B d3 e3 R 1:c3 B 2:b5"
/>
Let's assume that Red has a [[ladder escape]], so that Red will "win" the ladder. Red could start the ladder right away, but it is better to first tidy up the corner by playing 3 and 4:
<hexboard size="5x5"
coords="none"
edges="bottom left"
contents="R d2 e2 B d3 e3 R 1:c3 B 2:b5 R 3:b3 B 4:a5"
/>
This gains a bit of territory for Red. Note that 3 is immediately forcing: if Blue does not respond, Red connects to the edge. On the other hand, if Red has already played and connected the ladder, 3 is no longer forcing.

To illustrate that this can make a difference, consider the following position, with Red to move. In this situation, "a" is winning, but "b" and all other moves are losing.
<hexboard size="5x5"
coords="none"
edges="all"
contents="B b1 d3 b5 R c3 d5 E a:b3 b:c4"
/>

=== Incomplete joseki ===

Failing to correctly complete a [[joseki]] often results in an untidy situation.

== Related concepts ==

In Go, there is the concept of [https://senseis.xmp.net/?Aji aji], which means something like "the possibilities left in a position".

[[category: Advanced Strategy]]

← Older revision		Revision as of 19:22, 28 December 2020
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	[[category: Advanced Strategy]]		[[category: Advanced Strategy]]
		+	[[category: Definition]]

@@ Line 41: / Line 41: @@
    contents="R d2 e2 B d3 e3 R 1:c3 B 2:b5 R 3:b3 B 4:a5"
    />
-This gains a bit of territory for Red. Note that 3 is immediately forcing: if Blue does not respond, Red connects to the edge. On the other hand, if Red has already played and connected the ladder, 3 is no longer forcing.
+This gains a bit of [[territory]] for Red, and often ends up [[flank|capping]] a red [[flank]]. Note that 3 is immediately forcing: if Blue does not respond, Red connects to the edge. On the other hand, if Red has already played and connected the ladder, 3 is no longer forcing.
 To illustrate that this can make a difference, consider the following position, with Red to move. In this situation, "a" is winning, but "b" and all other moves are losing.

Tidiness - Revision history

Selinger: /* Obtuse corner example */ Mention flank.

Selinger: Added category

Selinger: Created a page for tidiness