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FOUNDATION_30 — THE GAP THAT SURVIVES · THE CLOSING LESSON OF THE CANDLE
FOUNDATIONS · 30 / 30 · SELF-PACED · ~13 MIN READ

TASUKI GAP &
SIDE-BY-SIDE LINES

A GAP THAT REFUSES TO CLOSE

A trend gaps forward. A pullback candle tries to erase that gap — and fails to close it completely. The gap surviving the pullback is read as proof the trend still has conviction behind it.

«What is bent will straighten again.»
— JAPANESE PROVERB · MAGATTA MONO WA MATA NAORU
SCROLL
01 — HISTORY

THE GAP AS
A LOAD-BEARING WALL

TASUKI — THE SASH THAT HOLDS A SLEEVE BACK

The Sakata ledgers named this shape after a tasuki, the cord used to tie back a kimono's sleeves — the third candle ties back into the gap without ever quite closing it.

SAKATA ERA
→ A NAME BORROWED FROM A SASH KNOT
BAR-CHART ERA
→ GAPS SURVIVE THE TRANSLATION
ONE OF THE FEW SHAPES BAR CHARTS SHOW FINE

Unlike doji or engulfing shapes, a price gap doesn't need a candle body to be visible — bar charts show this pattern's core logic clearly.

NISON CATALOGS THE RARER COUSIN TOO

Steve Nison's 1991 catalog carries across both the tasuki gap and its rarer cousin, side-by-side white lines — noting the downside version is seen so rarely it's almost a curiosity.

1991
→ A COUSIN RARER THAN THE TRI-STAR
TODAY
→ THE GAP DOES THE TALKING
A CONTINUATION READ ON GAPS THAT HOLD

Traders today use it as one more vote for continuation when a pullback tests a gap and can't quite fill it.

02 — THREE PILLARS

A GAP,
TESTED AND HELD

PILLAR 01
⌐⌐↴
THE ANATOMY
TWO CANDLES, A GAP, THEN A CANDLE THAT ALMOST CLOSES IT

A long candle, then a second same-direction candle gapping away from the first. A third candle, opposite color, opens inside the second candle's body and closes inside the gap — but not through it.

BEGINNER TRAP — treating any gap-and-pullback as a tasuki gap. The pullback candle must open inside candle two's body and land inside the gap without closing it.
↗ SEE IT LIVE ON CLEAREX
THE GAP CLOSES INSIDE THE GAP — NOT THROUGH IT THE GAP HOLDS UNDER THE TEST
PILLAR 02
▲▼
UPSIDE VS DOWNSIDE
THE GAP DIRECTION NAMES IT

A gap-up in an uptrend that survives a red pullback candle is the upside tasuki gap. A gap-down in a downtrend that survives a green pullback candle is the downside tasuki gap — the identical logic, downward.

BEGINNER TRAP — reading the pullback candle's color as bearish on its own. Its color is expected; whether the gap survives is what matters.
↗ SEE IT LIVE ON CLEAREX
UPSIDE TASUKI GAP ✓ DOWNSIDE TASUKI GAP ⚠ SAME LOGIC · OPPOSITE DIRECTION
PILLAR 03
▮▮
THE RARE COUSIN
SIDE-BY-SIDE WHITE LINES — NO PULLBACK AT ALL

PLAIN: instead of a pullback candle testing the gap, a second white candle of similar size just gaps away and prints right beside the first, roughly the same open. Same continuation idea, no test at all.

Side-by-side white lines skip the pullback candle entirely: a second white candle of similar size gaps away and opens near the first white candle's opentwo candles standing side by side across the gap, both agreeing.

PRO: the downside version of side-by-side white lines is rare enough that some catalogs question whether it should be treated as a reliable signal at all — weight it accordingly, well below the upside tasuki gap.

BEGINNER TRAP — confusing side-by-side white lines with a tasuki gap because both involve a gap and continuation. The middle candle's color and role are the whole difference.
↗ SEE IT LIVE ON CLEAREX
SIDE BY SIDE — SAME OPEN, NO PULLBACK TWO CANDLES AGREEING ACROSS THE GAP
03 — REFERENCE · THE FAMILY

GAP LOGIC,
A FEW WAYS

UPSIDE TASUKI GAP
A gap-up survives a red pullback candle. Bullish continuation.
DOWNSIDE TASUKI GAP
The mirror in a downtrend. Bearish continuation.
UPSIDE SIDE-BY-SIDE WHITE LINES
No pullback — a second white candle of similar size joins the first across the gap.
DOWNSIDE SIDE-BY-SIDE WHITE LINES
Rare enough to be treated mostly as a curiosity — weight it far below the others.
THE FAILED VERSION
The third candle closes all the way through the gap — the pattern fails, the gap is filled.
COUSIN: THREE METHODS
Another continuation family, but reads a contained range rather than a surviving gap (FOUNDATION_29).
04 — THE RECORD · WITH DATES

WHERE THE GAP
REFUSED TO CLOSE

2020–2021
BTC · GAPS THAT HELD THROUGH THE BULL RUN
A PULLBACK TESTS THE GAP AND FAILS TO CLOSE IT

Across the 2020–2021 advance, several up-gaps were tested by a red pullback candle that closed inside the gap rather than through it, before the climb resumed.

THE GAP HELD, THE CLIMB RESUMED BTCUSD · 2020–2021
2022
S&P 500 · DOWN-GAPS THAT HELD DURING THE DECLINE
A BOUNCE TESTS THE GAP AND FAILS TO CLOSE IT

During the 2022 bear market, several down-gaps were tested by a green bounce candle that closed inside the gap rather than through it, before the decline continued.

THE GAP HELD, THE DECLINE RESUMED SPX · 2022
EVERY CYCLE
WHY SIDE-BY-SIDE WHITE LINES STAY SCHEMATIC
THE HONEST POSITION ON THE RARER COUSIN

The downside version in particular is uncommon enough across real charts that this lesson teaches it schematically rather than forcing a specific chart to fit it — consistent with how this course treats every genuinely rare shape.

THE TEXTBOOK SHAPE, NOT A FORCED FIT SCHEMATIC BY DESIGN
05 — THE PRACTICE LAB · THREE QUESTIONS

THE THREE-STEP
SYSTEM

A REAL TREND AND A REAL GAP?
Confirm a genuine trend and a genuine price gap between candle one and candle two.
DID THE THIRD CANDLE TEST THE GAP?
Check that it opens inside candle two's body and closes inside the gap.
DID THE GAP SURVIVE?
If the third candle closes all the way through the gap, the pattern fails — the gap is filled.
→ A GAP THAT SURVIVES A TEST IS A GAP WITH CONVICTION
06 — READING DRILLS

READ THE
GAP TEST

SCORE: 0 / 3
DRILL 01
⌐⌐↴

In an uptrend, a green candle gaps up from the prior one. A red candle then opens inside that second candle's body and closes inside the gap, without filling it. What is this?

? GAP, THEN A TEST → ?
DRILL 02

The same setup begins, but the red pullback candle closes all the way through the gap, back into the first candle's body. Is this still a valid tasuki gap?

? A FILLED GAP FAILS THE TEST
DRILL 03
▮▮

A green candle gaps up from the prior green candle, and instead of a pullback, a second green candle of similar size prints right beside it, opening near the same level. What is this?

? NO TEST OF THE GAP AT ALL
07 — LIVE READ · THE GAP, TICK BY TICK

INSIDE THE
GAP TEST

A gap, and the candle that tests it, watched tick by tick on the left — and the mark it leaves in the ledger on the right. Held upward, held downward — and the test that failed.

FORMATION:
01 — THE FIRST CANDLE
A real uptrend produces a long green candle.
02 — THE GAP
A second green candle gaps up and away from the first.
03 — THE TEST
A red candle opens inside candle two and closes inside the gap — without filling it.
04 — THE RECORD
The gap held: upside tasuki gap, continuation confirmed.
INSIDE THE GAP — HELD THE RECORD THE GAP SURVIVED THE TEST UPSIDE TASUKI GAP SCHEMATIC — THE GAP TEST, TICK BY TICK · AUTO-LOOP
07 — ACTIVE DRILL · DID THE GAP SURVIVE?

THE GAP TEST

A gap, and a candle testing it. Judge exactly where the third candle's close lands — then call it: continuation (gap held), pass, or reversal (gap filled).

CALLED 0 · WRONG 0
Gap, then a test. Held, or filled?
Measure the close against the gap's exact edge — nothing else decides this one.
08 — DISCIPLINE · MEASURE THE EDGE EXACTLY

THE GAP'S EDGE
IS THE WHOLE RULE

PLAIN: find the exact price where the gap starts, and check whether the pullback candle's close stays on the near side of it. That's the whole test.

The classic error is eyeballing "close enough" instead of checking the exact price. The discipline is mechanical: mark the precise edge of the gap, and judge the pullback candle's close against that exact line, not a rough impression.

PRO: journal how close the pullback candle's close comes to the gap's edge, not just pass/fail — a close that barely survives is a weaker signal than one that closes well clear of the gap.

A REAL TREND AND GAP?
THIRD CANDLE OPENED INSIDE CANDLE TWO?
CLOSED INSIDE THE GAP, NOT THROUGH IT?
→ THE EDGE IS EXACT — MEASURE IT, DON'T GUESS IT
THE GAP'S EXACT EDGE CLOSED ON THE NEAR SIDE — HELD
09 — LEGACY

THE CANDLE'S
WHOLE VOCABULARY

From a single doji to a gap that survives its own test, thirty foundations now cover the candlestick's complete working vocabulary — single candles, pairs, trios, reversals, continuations, and the honest limits of each. The chart's shapes are now yours to read. Next: the larger shapes those candles draw together.

«What is bent will straighten again.»
— JAPANESE PROVERB · MAGATTA MONO WA MATA NAORU
UPSIDE TASUKI GAP · DOWNSIDE TASUKI GAP · SIDE-BY-SIDE WHITE LINES · MAGATTA MONO WA MATA NAORU · BTCUSD · SPX · FOUNDATION_30 / 30 · UPSIDE TASUKI GAP · DOWNSIDE TASUKI GAP · SIDE-BY-SIDE WHITE LINES · MAGATTA MONO WA MATA NAORU · BTCUSD · SPX · FOUNDATION_30 / 30 ·