CBGChinese Board Games GuideRules and annotated records for strategy learners

Gomoku

Gomoku Strategy Lesson: Black H9 Center Route

First line1. Black E8 | White K9

Main mistake: blocking the visible four while ignoring the open three behind it

Replay 1. Black E8 | White K9; 2. Black L8 | White H8, locate center stones around E8, open-three lane L8-H9, and defensive point I8, name the reusable idea, then decide which part of the record is only local to this game, use the fragment as a rules-and-notation checkpoint before opening another archive page, and then pick a related record that changes one study task without changing the game family.

all-levelsStrategy concepts6 record entries
Read the record first

1. Black E8 | White K9

Start with the notation and level shape, then use the diagram as a check on the same position.

Opening line1. Black E8 | White K9

Black claims center for the strategy concept; White touches the same line to prevent a free open three.

Level shapeReference note

An all-levels concept bridge: center route note should help readers compare record formats, so this page keeps center stones around E8, open-three lane L8-H9, and defensive point I8 and open three, broken three, open four, and double-threat timing side by side. Board cue: center stones around E8, open-three lane L8-H9, and defensive point I8. Rule check: open three, broken three, open four, and double-threat timing. The notation uses Gomoku grid coordinates. The first two entries are 1. Black E8 | White K9; 2. Black L8 | White H8, which keeps the explanation tied to one local idea, one rule cue, and one comparison habit that still respects the game's own rules.

Reader jobStrategy concepts

Find a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept, then test the mistake before opening source references.

Study goalStrategy concepts

The pincer study task teaches one local idea, one rule cue, and one comparison habit that still respects the game's own rules....

Replay first1. Black E8 | White K9

6 entries; use the notation before reading commentary.

Position checkReference

a diagonal three, a side block, and a threat square that must be answered now; one rule cue,...

Verify outsideRenjuNet

Compare notation and position type after the lesson line is clear; do not treat this fragment as a copied score.

Reader focusUse the next four cues before opening the reference material.
LevelReference

An all-levels concept bridge: center route note should help readers compare record formats, so this page keeps center stones around E8, open-three lane L8-H9, and defensive point I8 and open three, broken three, open four, and double-threat timing side by side. Board cue: center stones around E8, open-three lane L8-H9, and defensive point I8. Rule check: open three, broken three, open four, and double-threat timing. The notation uses Gomoku grid coordinates. The first two entries are 1. Black E8 | White K9; 2. Black L8 | White H8, which keeps the explanation tied to one local idea, one rule cue, and one comparison habit that still respects the game's own rules.

Notation1. Black E8 | White K9

Say the first line aloud, then match it to the board diagram.

Mistakeblocking the visible four while ignoring the open three behind it

Keep this failure in view while replaying the final two entries.

Next recordGomoku Strategy Lesson: Black K8 Route Repair

Stay in Gomoku and compare the same strategy concepts topic at beginner level; the rules and notation stay familiar while the record shape gets easier or harder.

Gomoku all-levels study diagram for Strategy concepts
Gomoku all-levels study diagram for Strategy concepts. The diagram is built specifically for Gomoku Strategy Lesson: Black H9 Center Route. It shows line grid with stones, open threes, broken threes, and blocking points. It highlights center stones around E8, open-three lane L8-H9, and defensive point I8 and the open three, broken three, open four, and double-threat timing check for this strategy concept. It is an original open-license study diagram paired with a public-library reference image. Neither asset is presented as a historic match sheet or online game screenshot. Source: original open-license study diagram. License: CC BY 4.0 self-authored study diagram. Open the image file.

What this record looks like

An all-levels concept bridge: center route note should help readers compare record formats, so this page keeps center stones around E8, open-three lane L8-H9, and defensive point I8 and open three, broken three, open four, and double-threat timing side by side. Board cue: center stones around E8, open-three lane L8-H9, and defensive point I8. Rule check: open three, broken three, open four, and double-threat timing. The notation uses Gomoku grid coordinates. The first two entries are 1. Black E8 | White K9; 2. Black L8 | White H8, which keeps the explanation tied to one local idea, one rule cue, and one comparison habit that still respects the game's own rules.

Position cue

a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept

Unique asset

A self-authored SVG study diagram for this Gomoku strategy concept marks center stones around E8, open-three lane L8-H9, and defensive point I8. It is paired with Gomoku grid coordinates beginning 1. Black E8 | White K9; 2. Black L8 | White H8. The public reference image pub-gomoku-paper-five gives readers an open-gallery board or piece reference for the same game family.

Rule check

Gomoku rule check

Check this before the outside record: read 1. Black E8 | White K9, name the rule source, test the position cue, and keep the mistake visible.

Open Renju International Federation / RenjuNet
Rule sourceOfficial Documents of RIF

Renju International Federation / RenjuNet is the rule source to open first; use it for legal vocabulary before comparing this reference note.

Notation bridgeGrid-coordinate threat notation

Grid coordinates let the reader mark exact stones and threat lanes. The notation is only useful when read with the threat type, not as a plain list of occupied points. In this lesson the first line is 1. Black E8 | White K9.

Legal testa diagonal three, a side block, and a threat square that must

A legal move places a stone on an empty point. Threat reading then depends on open threes, broken threes, open fours, double threats, and any rule-family restrictions in force. For this page, apply it to a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison.

Trap to watchblocking the visible four while ignoring the open three behind it

The common trap is blocking the visible four while missing the open three or double-threat behind it. A record example should name the hidden second threat, not only the final five. Here the reader's mistake check is blocking the visible four while ignoring the open three behind it.

How to read this lesson

First replay: 1. Black E8 | White K9. Keep the line short enough to say aloud before judging whether the move is good.

Then inspect: The pincer study task teaches one local idea, one rule cue, and one comparison habit that still respects the game's own rules. Board cue: center stones around E8, open-three lane L8-H9, and defensive point I8. Level job: the...

Outside check: Linked only as external context. RenjuNet game contents are not copied into this site, and composed lessons are not labeled as RenjuNet records.

Record format

Grid-coordinate threat notation

Read the sample as a threat-reading study line, not as a formal Renju tournament record or proof of a solved opening.

1. Black G8 | White J8
Beginner

Beginner Gomoku records identify open threes, broken threes, and the one block a reader must not miss.

Intermediate

Intermediate records compare the visible four with the quieter move that keeps a second threat alive.

Advanced

Advanced records layer threats, forcing moves, and conversion timing so the reader checks both immediate and hidden lanes.

Annotated Record Fragment

Move-by-move replay

Gomoku record reader

Gomoku reference strategy-record fragment starts from 1. Black E8 | White K9. It is a composed teaching fragment, not a tournament score; compare outside records for rules, notation, and position type before treating it as proof.

Step 1 / 61. Black E8 | White K9

Black claims center for the strategy concept; White touches the same line to prevent a free open three.

Key entry: connect it to a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept.
Position cue
a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept
Mistake test
blocking the visible four while ignoring the open three behind it
Gomoku notation reader for this composed study fragment
MoveNotationAnnotationReader Cue
1Black E8 | White K9Black claims center for the strategy concept; White touches the same line to prevent a free open three.Key entry: connect it to a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept.
2Black L8 | White H8Black forms a two-stone base; White blocks the extension side that matters in this strategy concept.Pause here and name the rule cue, not only the active move.
3Black H9 | White I8The first threat is a broken three, so White must answer the forcing point.Compare with the previous reply before moving on.
4Black G8 | White J8Black changes direction; White chooses defense over a remote counter-threat.Pause here and name the rule cue, not only the active move.
5Black I9 | White F8The intermediate record compares open-three pressure with a loose four that is not forcing yet.Compare with the previous reply before moving on.
6Black K8 | White J9White survives by blocking the double-threat intersection, not by chasing the last stone.Finish check: explain why blocking the visible four while ignoring the open three behind it is unsafe here.
  1. Move 1Black E8 | White K9

    Black claims center for the strategy concept; White touches the same line to prevent a free open three.

    Key entry: connect it to a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept.
  2. Move 2Black L8 | White H8

    Black forms a two-stone base; White blocks the extension side that matters in this strategy concept.

    Pause here and name the rule cue, not only the active move.
  3. Move 3Black H9 | White I8

    The first threat is a broken three, so White must answer the forcing point.

    Compare with the previous reply before moving on.
  4. Move 4Black G8 | White J8

    Black changes direction; White chooses defense over a remote counter-threat.

    Pause here and name the rule cue, not only the active move.
  5. Move 5Black I9 | White F8

    The intermediate record compares open-three pressure with a loose four that is not forcing yet.

    Compare with the previous reply before moving on.
  6. Move 6Black K8 | White J9

    White survives by blocking the double-threat intersection, not by chasing the last stone.

    Finish check: explain why blocking the visible four while ignoring the open three behind it is unsafe here.

Common Mistake

Mistake to test: blocking the visible four while ignoring the open three behind it. Replay 1. Black E8 | White K9 against a diagonal three, a side block, and a threat square that must be answered now; one rule cue,, then name the rule or reply that prevents it.

CommentaryOpen detailed replay notesFirst reading pass for Gomoku Concept Bridge: Center Route: Use move one Black E8 | White K9; move...

Commentary

First reading pass for Gomoku Concept Bridge: Center Route: Use move one Black E8 | White K9; move two Black L8 | White H8 as the anchor for this strategy concept. The board detail to find first is center stones around E8, open-three lane L8-H9, and defensive point I8.

Decision note for Concept Bridge: Center Route: compare Black H9 with the tempting alternative and say what the opponent gains next.

Progress in this strategy concept is measured one reply later. Here, White I8 checks whether the slower-looking choice was real.

Use the concept bridge: center route cross-game comparison as a check, not as the lesson itself. This strategy concept keeps open three, broken three, open four, and double-threat timing visible while the line is replayed.

By the end, point at White I8, explain the punishment in this strategy concept, and choose whether the next record is easier or harder.

PracticeOpen study questions4 questions for checking the record after replay.

Study Questions

  • Which lane detail in 1. Black E8 | White K9; 2. Black L8 | White H8 first reveals the concept bridge: center route problem?
  • What would change in this concept bridge: center route record if the reply White I8 arrived one move earlier?
  • In the concept bridge: center route position, which candidate around Black H9 is tempting, and what part of open three, broken three, open four, and double-threat timing makes White I8 punish it?
  • Gomoku: Which center stones around E8, open-three lane L8-H9, and defensive point I8 detail would you replay before opening the next related lesson?
Level comparison

What different record levels look like

Compare the same game family across level examples before choosing the next lesson. The active card marks this page's level.

Beginner recordGomoku Beginner First-Plan Record: Black G8 Route Repair1. Black L8 | White H8
Same cue: a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept
1Threat
2Block
3Fork
  1. ThreatStart from 1. Black L8 | White H8 and name the shared cue: a diagonal three, a side block, and a threat square.
  2. BlockCompare the reply around a remote counter-threat, an open-four lane, and a race-ending reply; before trusting the first plan.
  3. ForkCarry the branch to the mistake test: playing the center stone before checking the forbidden-pattern boundary.

6 entries, 1 plan + 1 reject: one visible plan, one rule cue, and one mistake to stop before.

Length
6 annotated entries
Branch load
Single line, no side branch
Candidates
1 plan + 1 reject
Judgment
Legal cue first: grid coordinates, threat type, forcing order, defensive point, and rule-family boundary
Depth
Two-move window
Read for
Read one plan aloud, match it to the board cue, and stop at the first unsafe reply.
Watch
playing the center stone before checking the forbidden-pattern boundary
Next cue
Move up after you can name the rule cue without rereading the note.
Review task

Replay 1. Black L8 | White H8, name a remote counter-threat, an open-four lane, and a race-ending reply; one visible plan, then reject playing the center stone before checking the forbidden-pattern boundary.

Record anatomy

Beginner Gomoku records are a short line built from 1. Black L8 | White H8: one rule cue, one visible plan, and one obvious mistake around a remote counter-threat, an open-four lane, and a race-ending reply; one visible plan and one tempting.

Opening line
Start with 1. Black L8 | White H8; keep the first reply visible.
Rule cue
Point to grid coordinates, threat type, forcing order, defensive point, and rule-family boundary before judging the move.
First trap
Stop at playing the center stone before checking the forbidden-pattern boundary instead of exploring side branches.
Ready check
Move on only after the rule cue can be named from memory.

Beginner Gomoku records identify open threes, broken threes, and the one block a reader must not miss.

Intermediate recordGomoku Intermediate Reply Record: Black H9 Timing Choice Turn1. Black E8 | White K9
Same cue: a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept
1Threat
2Block
3Fork
  1. ThreatStart from 1. Black E8 | White K9 and name the shared cue: a diagonal three, a side block, and a threat square.
  2. BlockCompare the reply around a split attack lane, a repair stone, and a defense before trusting the first plan.
  3. ForkCarry the branch to the mistake test: playing the center stone before checking the forbidden-pattern boundary.

8 entries, 2 candidate replies: add a reply comparison before deciding which plan survives.

Length
8 annotated entries
Branch load
Main line plus reply branch
Candidates
2 candidate replies
Judgment
Timing, safety, and shape all get judged
Depth
Turning-point window
Read for
Compare two candidate plans, then explain why the reply changes timing or safety.
Watch
playing the center stone before checking the forbidden-pattern boundary
Next cue
Move up after you can compare both plans before seeing the answer.
Review task

Compare both replies around a split attack lane, a repair stone, and a defense that works only; explain where playing the center stone before checking the forbidden-pattern boundary changes the plan.

Record anatomy

Intermediate Gomoku records keep the same cue near a split attack lane, a repair stone, and a defense that works only once; two candidate, then add candidate replies, a turning point, and one comparison line after 1. Black E8 | White K9.

Main line
Anchor the comparison at 1. Black E8 | White K9, not at a loose theme name.
Candidate pair
Keep two replies alive until the timing or safety test resolves them.
Turning point
Explain how playing the center stone before checking the forbidden-pattern boundary changes the value of the first plan.
Replay task
Before opening the answer, say which candidate survives and why.

Intermediate records compare the visible four with the quieter move that keeps a second threat alive.

Advanced recordGomoku Advanced Threat Record: Black K8 Center Route1. Black G8 | White J8
Same cue: a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept
1Threat
2Block
3Fork
  1. ThreatStart from 1. Black G8 | White J8 and name the shared cue: a diagonal three, a side block, and a threat square.
  2. BlockCompare the reply around a split attack lane, a repair stone, and a defense before trusting the first plan.
  3. ForkCarry the branch to the mistake test: answering the last stone instead of the double-threat point.

10 entries, 3+ candidate points: hold the branch, quiet preparation, and conversion test together.

Length
10 annotated entries
Branch load
Forcing branch, quiet prep, conversion
Candidates
3+ candidate points
Judgment
Every move can change the final evaluation
Depth
Full branch with source comparison
Read for
Hold the forcing branch, quiet preparation, and conversion test in the same replay.
Watch
answering the last stone instead of the double-threat point
Next cue
Stay here when you want dense branches, not just legal-move recognition.
Review task

Annotate the quiet move after 1. Black G8 | White J8; prove the conversion still survives answering the last stone instead of the double-threat point.

Record anatomy

Advanced Gomoku records turn 1. Black G8 | White J8 into a branch: forcing move, quiet preparation, conversion test, and source comparison around a split attack lane, a repair stone, and a defense that works only once; a forcing.

Forcing branch
Track the pressure line from 1. Black G8 | White J8 without skipping replies.
Quiet move
Mark the preparation move that does not look urgent but keeps the branch alive.
Conversion test
Check whether answering the last stone instead of the double-threat point appears only after the defender's best reply.
Review task
Write the moment pressure becomes conversion, then compare an outside record.

Advanced records layer threats, forcing moves, and conversion timing so the reader checks both immediate and hidden lanes.

Study fragment

Gomoku reference strategy-record fragment starts from 1. Black E8 | White K9. It is a composed teaching fragment, not a tournament score; compare outside records for rules, notation, and position type before treating it as proof.

After the lesson line

Gomoku outside-record comparison

Use this after replaying the lesson line. The article line is a teaching fragment; the outside source gives a comparison route, not permission to copy a score.

Real record indexRenjuNet

Hold 1. Black E8 | White K9 beside a diagonal three, a side block, and a threat square that must be answered now; one rule cue,. Match outside material by notation, position type, and the trained mistake before judging move quality.

Level useReference

Use the source as a reference check: compare the notation format, rule vocabulary, and position cue before moving into beginner, intermediate, or advanced lessons.

Keep separateCompare, keep separate

Use RenjuNet game lines, player labels, tournament fields, or database commentary only as context checks; this reference note stays an original teaching example, separate from outside scores, player metadata, and source commentary.

Open RenjuNet
Real record index

Compare this Gomoku lesson with real records

Use RenjuNet to compare grid coordinates, threat type, forcing order, defensive point, and rule-family boundary. This reference note stays an original teaching example, not a copied score, table log, SGF file, or named-player record.

Compare sourceRenjuNetOpen source
Notation sample1. Black E8 | White K9
Comparison object

grid coordinates, threat type, forcing order, defensive point, and rule-family boundary

  1. A
    Match the source type

    Open RenjuNet as a real record index and decide whether you are comparing a real record index, a rule source, or a position reference before judging the lesson.

  2. B
    Match notation before quality

    Hold the article sample 1. Black E8 | White K9 beside the outside source. Compare notation shape, turn order, and record length before deciding whether the moves teach the same problem.

  3. C
    Match the position job

    Use the cue a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and. The outside material only helps if it trains the same board, route, tile, threat, capture, or rule-position job.

  4. D
    Keep the lesson original

    Use outside move lists, player names, event labels, table logs, SGF files, or database commentary only as context checks; then return to the article's own mistake check: blocking the visible four while ignoring the open three behind it.

Real record index

Gomoku classic record bridge

Use 1. Black E8 | White K9 as the page's working line, then compare reference note shape against RenjuNet, the classic anchor, and the trained mistake before opening a full outside score.

Working line1. Black E8 | White K9

a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept

Mistake checkblocking the visible four while ignoring the open three behind it

Open RenjuNet
Classic anchorOpen-Three Threat AnchorOpen three, broken three, and forcing defense

Compare threat type, first forcing point, defensive reply, and whether the outside record uses formal Renju or casual Gomoku assumptions.

Open RenjuNet
Record exemplarRenju Threat-Record ExemplarCompare open-three, broken-three, open-four, double-threat, and forbidden-move context before mapping a lesson to a Renju record.

Beginner pages should identify one threat and one block; intermediate pages should compare the visible threat with a quieter continuation; advanced pages should compare forcing order and rule-family constraints.

Open RenjuNet
BeginnerShort Gomoku record: one notation line, one rule cue, and one visible mistake tied to a diagonal three, a side block, and a threat square that must.

In the outside source, look only for the same first plan around 1. Black E8 | White K9; ignore long branches until the mistake can be named plainly.

IntermediateTurning-point Gomoku record: the same cue adds candidate replies, timing comparison, and a reason the first plan changes.

Compare whether the outside line tests the same reply choice and whether blocking the visible four while ignoring the open three behind it appears one exchange later.

AdvancedDense Gomoku record: forcing branch, quiet preparation, conversion test, and source comparison stay in one replay.

Use outside records to compare branch discipline and conversion timing, then keep this original teaching example separate from outside scores.

This bridge is a reader-facing comparison guide. The article remains a composed teaching fragment and original teaching example, separate from outside scores, player metadata, event labels, table logs, SGF files, database commentary, and source commentary.

Real record index

Gomoku real record check plan

Use this plan after the lesson replay: compare 1. Black E8 | White K9 with RenjuNet, then match the position terms, level job, and mistake pattern before trusting an outside record as a useful comparison.

Open sourceRenjuNetOpen record source
First line1. Black E8 | White K9
Search terms

diagonal three side block threat square be answered now rule cue notation line comparison path center

What should match

A useful outside Gomoku record should share the notation shape 1. Black E8 | White K9, the same position job around diagonal three side block threat square be answered now rule cue notation line comparison path center, and the trained mistake blocking visible four ignoring open three behind it.

What stays separate

Keep outside scores, player names, event labels, table logs, SGF files, database notes, and source commentary separate from the article body.

What the source can proveRenjuNet is the outside comparison point

RenjuNet can prove that real Gomoku records exist in a comparable notation or database format. Use it to compare grid coordinates, threat type, forcing order, defensive point, and rule-family boundary, record density, and level shape; it does not prove that this mixed-level reference line is copied from that source.

What this lesson is1. Black E8 | White K9 is a teaching line

This page uses 1. Black E8 | White K9 as a compact Gomoku study line for diagonal three side block threat square be answered now rule cue notation line comparison path center. It teaches a level-specific record shape and a mistake check; it is not presented as a copied score from RenjuNet.

How to compareMatch record shape before names

Compare notation family, turn order, grid coordinates, threat type, forcing order, defensive point, and rule-family boundary, record level, and the mistake cue blocking visible four ignoring open three behind it. A useful outside record may share the same problem without sharing every move.

What stays separateKeep source facts and lesson notes apart

Keep outside scores, player names, event labels, table logs, SGF files, database notes, and source commentary separate from the article body. Use RenjuNet to check record reality, then return to the article's own annotation rather than mixing outside metadata into the lesson.

  1. Source
    Open the right kind of record source

    Start with RenjuNet as a real record index. Decide whether the outside page is a real record index, rule document, position reference, table log, or SGF-style record before comparing moves.

  2. Line
    Match the first notation line

    Hold 1. Black E8 | White K9 beside the outside source. The first check is notation family, turn order, and record length, not whether the whole outside score is identical.

  3. Position
    Match the position terms

    Search by diagonal three side block threat square be answered now rule cue notation line comparison path center. The outside material helps only when it trains the same grid coordinates, threat type, forcing order, defensive point, and rule-family boundary.

  4. Level
    Match the record level

    Use 1. Black E8 | White K9 as a reference-line cue, then compare beginner, intermediate, and advanced examples for the same Gomoku position terms before opening a full outside score.

  5. Separate
    Keep the teaching line separate

    Treat this reference note as an original teaching example, not a named game record or copied match score. Keep outside scores, player names, event labels, table logs, SGF files, database notes, and source commentary separate from the article body.

Treat this reference note as an original teaching example, not a named game record or copied match score.

Lesson references

Gomoku lesson references

Gomoku reference note starts from 1. Black E8 | White K9; compare rule language, record context, classic position shape, and public image evidence before using outside material.

Rule and notationOfficial Documents of RIFRenju International Federation / RenjuNet

Use Renju International Federation / RenjuNet to check legal vocabulary and Grid-coordinate threat notation before reading 1. Black E8 | White K9.

Compare
Compare the rule cue in a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept with grid coordinates, threat type, forcing order, defensive point, and rule-family boundary; the article's notation sample is the first thing to keep stable.
Boundary
The rule source supports vocabulary and legality checks while this page stays a composed teaching fragment for Gomoku.
Record contextRenjuNet Game Record ContextRenjuNet

Use RenjuNet to compare record shape, source type, and the trained mistake: blocking the visible four while ignoring the open three behind it.

Compare
Match 1. Black E8 | White K9, turn order, record length, and the position job before judging whether an outside record trains the same decision.
Boundary
Outside records are context checks; the move line here remains an original teaching example, not a named-player score.
Classic positionOpen-Three Threat AnchorRenjuNet

Open three, broken three, and forcing defense keeps a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept connected to a stable board, route, tile, or threat shape.

Compare
Compare threat type, first forcing point, defensive reply, and whether the outside record uses formal Renju or casual Gomoku assumptions.
Boundary
The anchor is a lookup guide for study shape; it does not turn this composed fragment into a copied score.
Public imageWikimedia Commons five-in-a-row paper gridWikimedia Commons five-in-a-row paper grid

Wikimedia Commons five-in-a-row paper grid is the public visual reference for this Gomoku page; For open-gallery context, the page adds Wikimedia Commons five-in-a-row paper grid, which gives readers a simple five-in-a-row grid reference for rule-card and beginner threat pages; used as game-material context before the reader checks the article-specific study diagram. The fit is contextual rather than exact: readers use it to recognize the game materials, then read the actual position from the study diagram.

Compare
Use the image for board, piece, route, tile, or surface context, then use the article diagram and 1. Black E8 | White K9 for the exact composed line.
Boundary
The public image supports context and license transparency; it is separate from the article-specific study diagram and move sequence.
Copy boundaryGomoku outside-material ruleRenjuNet

This page uses a composed teaching fragment for Gomoku strategy concept, with 1. Black E8 | White K9; 2. Black L8 | White H8 as the starting line. It is not a tournament score; treat it as a mixed-level study-note example built as a compact rules-and-record reference and compare outside sources separately. The page-specific mistake check is blocking the visible four while ignoring the open three behind it.

Compare
Use outside material to check grid coordinates, threat type, forcing order, defensive point, and rule-family boundary, source type, and position similarity before returning to the article line.
Boundary
Use RenjuNet game lines, player labels, tournament fields, or database commentary only as context checks; this reference note stays an original teaching example, separate from outside scores, player metadata, and source commentary.
What to compare
  • Notation and turn order: 1. Black E8 | White K9.
  • Position job and trained mistake: a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept / blocking the visible four while ignoring the open three behind it.
  • Image fit, source URL, license label, and whether the public image matches the same game family.
What stays outside
  • Outside scores, player metadata, event labels, table logs, SGF files, and database commentary stay outside the article body.
  • A public image is visual context, not proof that the composed move sequence happened in a real match.
  • A classic position anchor helps comparison; it is not a claim that this page reproduces that exact external record.
Classic lookup cueClassic lookup cue for GomokuRenjuNet: search cue and four comparison checks.

Classic lookup cue for Gomoku

Use RenjuNet as a real-record or position lookup context. This page remains a composed teaching fragment and is not a copied tournament score, named-player record, table log, or external database entry.

Search cueRenjuNet: Gomoku Strategy concepts + diagonal three side block threat square be answered now rule + 1. Black E8 | White K9 + gomoku-all-levels-concept-bridge-center-route-black-h9Open RenjuNet
1Search by position type

Start with diagonal three side block threat square be answered now rule. The goal is to find the same kind of board, tile, route, or threat problem before looking for an exact score.

2Compare notation shape

Use the sample 1. Black E8 | White K9 to compare notation form, move length, and record density against external material.

3Check the trained mistake

Keep this mistake visible while comparing: blocking visible four ignoring open three behind it. A useful outside record should make that decision easier to discuss.

4Keep lesson and outside record separate

Open RenjuNet for real records or position context, but keep this lesson separate from copied match scores and named-player claims.

Record exemplarCompare the lesson with a real source type2 source-backed exemplars for this game family.
Classic position anchorsUse known study shapes before searching for exact scores2 anchors; compare without copying a real score.
Curated reference packWhere to verify the record context2 game-specific references kept separate from the lesson.
Comparison pathHow to compare this fragment with external records4 lookup steps; compare, do not copy a real score.

How to compare this fragment with external records

Use this as a reading route before opening external databases or classic-position references. The goal is comparison, not copying a real score into this lesson.

  1. 1
    Match the notation shape

    Start with Grid-coordinate threat notation and the sample 1. Black E8 | White K9. Compare outside records only for notation shape before judging move quality.

  2. 2
    Anchor the same kind of position

    Use this page cue: a diagonal three, a side block, and a threat square that must be answered now; one rule cue, one notation line, and one comparison path; center stones around E8, open-three lane L8-H9, and defensive point I8; open three, broken three, open four, and double-threat timing check for the strategy concept Look for a similar board, tile, route, or threat problem, not an identical copied position.

  3. 3
    Read it as a reference lesson

    Compare record length, annotation density, and the trained mistake: blocking the visible four while ignoring the open three behind it. That is how this page explains what a reference record is for.

  4. 4
    Keep lesson and outside record separate

    Use RenjuNet for real record lookup. This page remains a composed teaching fragment and is not a copied tournament score or named-player record.

Reference layerRules checked separately from the teaching fragment1 rule source link for notation and boundary checks.

Rules checked separately from the teaching fragment

These links support rule vocabulary, notation boundaries, and game-family context. They do not turn this composed study fragment into a tournament score or named-player record.

Record contextExternal records stay separate from this lessonRenjuNet: context only, not copied-score proof.

External records stay separate from this lesson

Renju and Gomoku-style tournament record context, especially for readers comparing threat notation with formal game records.

Linked only as external context. RenjuNet game contents are not copied into this site, and composed lessons are not labeled as RenjuNet records.

RenjuNet Game Record ContextRenjuNet
Wikimedia Commons five-in-a-row paper grid
GomokuWhy this image is here

Public reference: For open-gallery context, the page adds Wikimedia Commons five-in-a-row paper grid, which gives readers a simple five-in-a-row grid reference for rule-card and beginner threat pages; used as game-material context before the reader checks the article-specific study diagram. The fit is contextual rather than exact: readers use it to recognize the game materials, then read the actual position from the study diagram. Source: Wikimedia Commons five-in-a-row paper grid. License: Wikimedia Commons freely licensed file. Source page. Source file