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HARD / EXPERT: patterns & practice

A HARD / EXPERT guide for turning dense patterns, hand constraints, trills and crossovers into readable shapes and repeatable steps. See the foundations page for note controls.

Updated: 15 Nov 2026

What to decide before HARD / EXPERT

Even at a manageable speed, a passage can fail when a hold occupies the hand needed next. Before playing, assign left, right, centre and hold roles; if it feels awkward, change one place next run.

Read the grouping and exit of dense passages

Plan the hand that moves after a pair

● Left hand L● Right hand R
1. Hit the pair together
LR
2. Take the centre with the right
LR
A successful pair can still lead into a missed single. Assign the centre note before playing and practise the pair and exit together. (Touch-control illustration.)

Alternating run

Use the first notes to decide whether it alternates or leans to one hand. Do not chase only the latter half.

Simultaneous-hit mix

If a pair leads into a central single, assign that single before playing. Keep the assigned hand close instead of moving both hands away together.

Late recognition

Before making a large speed change, view the same passage several times and name its shape. Compare speed only after the shape is readable.

Hand constraints and roles during holds

Keep the left hold; tap with the right

● Left hand L● Right hand R
LRHold
Avoid lifting the left finger with the right tap. Check a broken hold separately from a missed tap. (Touch-control illustration.)

Start the next hold before releasing the previous one

● Left hand L● Right hand R
1. Start next: both fingers stay down
LRPrior endNext hold
2. Release after the prior end passes
LRReleaseKeep holding
Overlapping holds require a period with both fingers down. Check the new start separately from sustaining the previous hold to its end. (Touch-control illustration.)

Keep contact while following the hold path and use the other hand for single notes. If the hold breaks, distinguish lifting with the other hand’s tap from falling behind a bend in the path.

[1]

Return trills and crossovers to a sequence

Plan the entrance and exit of an alternating run

● Left hand L● Right hand R
12345LRFirst
This example starts and ends on the left hand. Keep the last hit compact so the next input is reachable. It is an alternating pattern, not a rule for every repeated-note run. (Touch-control illustration.)

Swap the held paths at the crossing

● Left hand L● Right hand R
1. Bring fingers toward the overlap
LR
2. Keep contact and swap paths
LR
3. Left stays left; right stays right
LR
This method exchanges the held paths where they overlap, keeping the left hand on the left and the right hand on the right. Maintain contact rather than lifting both fingers to tap again. Based on a touch-player report. (Touch-control illustration.)
  1. Choose the starting hand
    Decide whether left or right takes the first hit. Starting undecided breaks alternation.
  2. Use small movement
    Use minimal movement near the judgment line. Bigger motion makes returning to the next shape harder.
  3. Compare crossover with another assignment
    On touch controls, you can exchange the held paths where they overlap. Keep the left hand on the left and the right hand on the right, maintaining contact through the transfer.

A 7 November player discussion describes this uncrossed method for crossing holds in Iofi and Risu EXPERT charts. Check any required action after the overlap, including end flicks.

[2]

Improve accuracy by changing one result at a time

Choose what to adjust from the pattern of errors

FAST / SLOW bias across the song↓ Check audio output and timing

Errors only in one difficult passage↓ Check fingering and where you look

Compare with a familiar song; do not change settings and technique together. (Illustration.)
ResultNext trial
FAST / SLOW leans one wayUse a familiar chart, keep the audio route unchanged, and compare timing adjustment.
Only the hard passage breaksChange one of the sequence, hand assignment, or visual focus before global settings.
Accuracy drops lateAvoid rushing early; reduce movement and recheck on the same chart.

[3]

Separate device and input-method differences

Do not transfer touchscreen fingering directly to keyboard, or vice versa. Screen size, simultaneous touch recognition, audio routing and input method change the feel. Compare under one stable setup, then recheck settings after an environment change.

A six-step practice-to-check loop

  1. Choose one chart and goal
    For example: finish, keep holds, or read one dense passage.
  2. Log run one
    Record only the failure type and approximate location.
  3. Make one hypothesis
    Do not blame speed, timing and technique all at once.
  4. Change one thing for run two
    Keep the chart and other settings fixed so the change is visible.
  5. Confirm on run three
    Keep it if it helps; otherwise revert and test a different hypothesis.
  6. Raise difficulty after stability
    Raise difficulty after several consistent attempts, not one lucky clear.

Use the separate page for chart-specific notes

Chart-specific passages and player observations live in the chart guide. This page avoids treating any one technique as universal across all songs.

Limits of this advanced guide

The advice on dense patterns, hand constraints, trills and crossovers is a practice framework informed by public official guidance and player articles. This site has not playtested every chart, device or input method, and does not guarantee a numeric setting or specific fingering.

[4] / [1] / [5] / [3]

References & image credits

Open reference list (6)
  1. Official X: hold-end guidance ↗Hand constraints and roles during holds / Limits of this advanced guide
  2. Player discussion of crossing holds (7 Nov 2026, posts 411–413) ↗Return trills and crossovers to a sequence
  3. nanagi: player notes on settings and timing ↗Improve accuracy by changing one result at a time / Limits of this advanced guide
  4. Official X: consecutive flick guidance ↗Limits of this advanced guide
  5. Hamu: chart terms and practice examples (player article) ↗Limits of this advanced guide
  6. Official Ver.1.2.0 update, 29 September 2026 ↗

English explanations are editorial translations. © COVER / © QualiArts, Inc.