There are 21 such basic patterns, which I propose to call spightonians (スパイトニャン). Some of them are very useful.

15 spightonians either have traditional names themselves, or contain subclasses with traditional names. This page is a field guide with which the reader can find these names. The classes are arranged by the number of enemy stones and then by the number of friendly stones the move touches. See also /conventions. (This page is not intended as a complete list of spightonians.)

Table of contents 0 Enemies 0 Friends Open Move Kosumi Strike (Only Enemy Stones Nearby) 1 Friend 2 or more Friends 1 Enemy 0 Friends 1 Friend 2 Enemies 0 Friends 1 or 2 Friends Outnumbered About this Page Footnotes

Table of diagrams The 4 immediate neighbours Untouched move Open move Kosumi Kado or Kata Hazama Nozoki [Nobi] Straddle Botsugi Half Fill Fill The touch The tap The thrust Carve The general wedge The Chop Impinge The Division [Sashikomi] The gouge

0 Enemies

(no white stones in contact with stones)

0 Friends

The untouched move is the ancestor of a prolific family of subclasses, distinguished by their more distant neighbours. Unfortunately, because of this dependence on context it does not lend itself to general tactical considerations.

Three subclasses are of particular importance: Open moves with no stones on the diagonals, kosumi with one friend on a diagonal and the strike with only enemies on the diagonals.

Open Move

All diagonals are empty.

Subclasses:

• tobi (飛び) - jump
• boshi (帽子) - capping move

Kosumi

kosumi (コスミ) - diagonal move

Subclasses:

• kaketsugi (カケツギ) - diagonal or open connection
• rappa-tsugi?

Strike (Only Enemy Stones Nearby)

• kado (角) - angle
• kata (肩) - shoulder
• ago (顎) - jaw

• hazama (間) - a stone played in a diagonal gap

• nozoki (ノゾキ) - peep ^[1]

1 Friend

This is the solid extension or nobi (伸び) in the broadest possible definition.

Subclasses:

• magari (曲がり) - turning move
• hiki (引き) - drawing back
• narabi (並び) (when no enemies are touching the existing friend)

2 or more Friends

This move makes most sense if the two stones straddle an enemy stone at a, in which case it is called kata-tsugi (堅ツギ) - solid connection. If a empty this move is an empty triangle. If a empty and there are 2 enemy stones at b this move can be guzumi.

botsugi (棒ツギ) - pillar not a very useful move in most circumstances.

This unfortunate situation occurs when you need to connect one of the stones with a living group.

1 Enemy

0 Friends

This is a useful Spightonian, but not as useful as the next one. See the touch.

Subclasses:

• hane (綽)
• tsuke (ツケ) the attachment
• hasami tsuke (挟みツケ) - clamp (if there is a friend at SS.
• hara-zuke (腹ツケ) - attachment at the belly of a group.
• kosumi tsuke (コスミツケ)

1 Friend

This is the most useful Spightonian. See tap.

Subclasses: (The distinction between the first three depends on other context.)

• osae - block (If all diagonals are empty or there is a white stone at the SW diagonal.)
• oshi (押し) - Push (If all diagonals are empty.)
• hai (這い) - the Crawl
• magari (曲がり) - the Turn（If the SW diagonal is a friend）

Subclasses:

• tsuki-atari (突き当たり) - bump
• tsuppari (ツッパリ)

2 Enemies

0 Friends

• atekomi (当て込み) - a play aiming to cut^[3] (a is empty)
• kiri (切り) - a cut (a is black)

• warikomi (割り込み) - the wedge (if all diagonals are empty)
• hane-komi (綽込み) (if one diagonal is black)

1 or 2 Friends

• atekomi (当て込み) - a play aiming to cut^[3] (a is empty)
• kiri (切り) - a cut (a is black)

• A form of de (出) - pushing in ^[4]

This is an ideal situation that rarely happens in real life.

Outnumbered

Sashikomi (差し込み) - thrusting in

This move is only possible when taking a group of enemy stones.

About this Page

Created: Sebastian, 2004-11-27

Footnotes

[1] The terms nozoki and peep do not exactly fit in this classification, because they say nothing about the other neighbours. To be exact, this move should be called open peep.

[3] The term atekomi includes several related cases.

[4] The term de also includes the case where the North stone is at the Northwest diagonal.