Test Browser

Start game without authentication returns 401

Unauthenticated request rejected

Start game with invalid mode returns 400

Invalid mode ID rejected

Submit move for wrong puzzle returns 400

Move submission validates puzzle ID

Submit move with invalid format returns 400

Move validation for UCI format

Request hint when hints disabled returns 403

Hint rejected in Puzzle Rocket

Request second hint returns 400

Only one hint per puzzle

End session for non-existent game returns 404

Invalid game ID rejected

End another user's game returns 403

Cannot end someone else's session

Submit move for ended game returns 400

Cannot interact with completed session

Start game when active session exists returns 409

Prevent duplicate sessions in same mode

Get puzzles with invalid rating range returns 400

Rating range validation

Rate limiting prevents abuse

Too many requests throttled

SQL injection attempt is blocked

Malicious input sanitized

XSS attempt in puzzle data is escaped

Script tags in data don't execute

Large payload rejected

Request size limits enforced

Expired JWT token returns 401

Token expiration enforced

Concurrent move submissions handled

Race condition prevention

Network timeout handled gracefully

Client-side timeout recovery

Server error returns 500 with safe message

Internal errors don't leak details

Invalid theme ID in filter returns empty results

Non-existent theme handled gracefully

Calculation Mode is unrated

User rating unchanged in all submodes

Default mode is Deep Think

Deep Think selected by default

Deep Think has no timer

No time pressure in Deep Think

Deep Think uses long sequences

Puzzles have 3+ moves

Commitment Mode first move is untimed

No time limit on move 1

Commitment Mode 3s timer after first move

Subsequent moves have 3 second limit

Commitment Mode timer expiry fails puzzle

Failing to move in 3s = puzzle failure

Checkmate Climb starts at mate-in-1

Session starts with easiest checkmates

Checkmate Climb progresses to mate-in-2

Success advances to harder checkmates

Checkmate Climb resets to mate-in-1 on fail

Failure resets progression

Checkmate Climb max level

Verify highest mate-in-N available

Hints allowed in Calculation Mode

Hint works with no rating impact

Rating range slider clamps correctly

Min cannot exceed max

Deep Think score decay to zero at 300s

Score reaches 0 at max time

Score can go negative after zero-point time

Exceeding max time gives negative score

Wrong attempt uses decayed score

Failed attempt records current decayed score

Retry attempt yields zero score

Retrying a puzzle gives 0 score

Commitment mode zero-point at 100s

Score reaches 0 at 100 seconds

Coming Soon when mode not available

Fallback for unavailable mode

Commitment Mode timer is HIDDEN

3-second timer not visually shown to user

Puzzle rating range selection works

Puzzles served from selected rating range

Session-end shows session stats

Comprehensive stats on session end

Puzzle-end shows depth (moves played)

Completion screen shows move count

Commitment Mode tests pre-calculation

User must calculate full line before first move

Mode selection changes start behavior

Different submodes have different mechanics

Puzzle Climb is rated (Glicko)

User Glicko rating changes during session

No time pressure (no clock)

No timer displayed or enforced

Difficulty increases after consecutive solves

Puzzles get harder after wins

Difficulty decreases after consecutive failures

Puzzles get easier after losses

Mixed performance difficulty adjustment

Difficulty responds to win/loss pattern

Wrong move fails puzzle immediately

First incorrect move = puzzle failure

Rating gain on solve

Successful solve increases user rating

Next puzzle loads after solve

Session continues after successful solve

Rating loss on fail

Failed puzzle decreases user rating

Next puzzle loads after fail (no game-over)

Session continues after failure

Hint reduces rating gain by 50%

Hint penalty applies to Glicko calculation

Puzzle-end completion screen shown

Modal after each puzzle

Start without rating prompts initialization

New user without rating sees init flow

Start without theme selection works

No theme selection = all themes

Level up after required solves (if level-based)

Progress to next level after consecutive solves

Level down after consecutive fails (if level-based)

Drop level after failures

Level does not drop below 1 (if level-based)

Minimum level is 1

Highest level persists after dropping

Peak level recorded even after dropping

Start game failure shows error

API error handling

Coming Soon when mode not available

Fallback for unavailable mode

First puzzle starts near user's rating

Difficulty targeting begins at user's current rating

Theme filtering works with single theme

Puzzles match single selected theme

Theme filtering works with multiple themes

Puzzles match any of selected themes (OR logic)

Session-end shows game session stats

Comprehensive stats on session end

User can exit session anytime

Exit button ends session and saves progress

Empty solution string is handled safely

System handles puzzle with empty or whitespace-only solution

Solution parsing ignores extra whitespace

Puzzle solution with extra spaces/newlines is parsed correctly

Malformed UCI token is rejected

Invalid UCI move format is handled gracefully

Invalid FEN is handled safely

Puzzle with invalid or incomplete FEN doesn't crash

Promotion piece mismatch is marked wrong

Promoting to wrong piece fails the puzzle

Underpromotion required is accepted

Correct underpromotion move is accepted

User cannot move during opponent turn

Board input disabled while waiting for opponent auto-response

Move history controls stop at boundaries

Previous/next controls disabled at start/end of history

Progress percent handles zero moves gracefully

No divide-by-zero when puzzle has zero moves

Puzzle solution cache expires correctly

Cached solution is refreshed after TTL

Game backup restores state within 1 hour

Browser refresh within 1 hour restores session

Game backup expires after 1 hour

Old backup is discarded

Failed completion retried within 24 hours

Offline completion is synced when connection restored

Failed completion expires after 24 hours

Stale failed completion data is discarded

Multi-tab backup conflict uses latest save

Latest backup wins in multi-tab scenario

Negative or NaN time does not break scoring

Invalid time values handled gracefully

Very short maxTimeSeconds does not break time bonus

Edge case scoring with maxTimeSeconds <= 5

Castling move validated correctly

Castling notation accepted when correct

En passant capture validated correctly

En passant notation accepted when correct

Alternate correct line is accepted

Puzzle accepts defined alternate winning moves

Puzzle Tempo puzzle-end shows rating earned

Modal displays rating change amount

Puzzle Tempo puzzle-end shows rating loss

Modal displays negative rating change

Puzzle Climb puzzle-end shows rating format

Same format as Tempo

Calculation Mode puzzle-end shows depth

Shows puzzle rating, moves played, time spent

Session-end shows game session stats

Comprehensive stats on session completion

Practice mode shows Practice badge instead of rating

No rating change display in practice

Hint usage shown on completion

Indicates if hint was used

Puzzle Rocket session-end shows all stats

Complete stats display for Rocket

GM Move session-end shows accuracy

Accuracy summary display

Continue button advances to next puzzle

Modal dismiss loads next puzzle

View Solution button shows correct moves

Solution replay available after failure

Play Again starts fresh session

Restart from session-end screen

Back to Menu returns to mode selection

Navigate away from session-end

Puzzle rating shown on completion

Difficulty indicator displayed

Time spent shown on completion

Solve time displayed

Default rating range applied

Default range is 1200-1800

Rating range clamps when min exceeds max

Slider enforces valid range

Start without theme selection works

No theme = all themes

Theme selection toggle and Select All

Theme UI controls work

Rating slider steps by 100

Slider increments correctly

Start game failure shows error

API error handling

Coming Soon when mode not available

Fallback for unavailable mode

Rating range persists while toggling themes

Range not affected by theme changes

Puzzle rating updates on solve (not just user)

Glicko updates BOTH user AND puzzle rating

Puzzle rating updates on fail

Puzzle gains rating when user fails

Empty puzzle database for filter

No puzzles match filter criteria

Very long session memory handling

100+ puzzles in single session

User at minimum rating (100) cannot go lower

Rating floor enforced

User at maximum rating (3500) cannot go higher

Rating ceiling enforced

Network disconnect during puzzle

Connection lost mid-solve

Session timeout after inactivity

Long idle time handling

Rapid consecutive moves

Fast clicking doesn't break state

Back button during puzzle

Browser back navigation handling

Same puzzle served twice in session

Avoid repeating puzzles

Puzzle with very long solution (10+ moves)

Extended multi-move handling

Timer at exactly 0 (boundary)

Precise timer boundary handling

Move submitted at exact timer expiry

Race between move and timeout

Hint on final move of puzzle

Hint on last remaining move

User has identical rating to puzzle

Equal ratings edge case

Extremely low RD (high confidence)

Established player small changes

Extremely high RD (new player)

Provisional player large changes

Unicode in puzzle data

Special characters handled

Stalemate position in puzzle

Puzzle ending in stalemate

Start button disabled until account selected

Must select account before starting

Selecting Chess.com enables Start

Chess.com account selection works

Selecting Lichess enables Start

Lichess account selection works

Switching accounts updates selection

Only one account selected at a time

Start navigates to play route

Game starts after account selection

Selection resets after page reload

No persistent selection

Account cards display logos and labels

Visual design of account cards

Connected state uses correct styling

Visual feedback for selection

Glicko rating system used for rated modes

Verify Glicko-1 algorithm calculates rating changes

Only Puzzle Tempo and Puzzle Climb are rated

All other modes don't affect rating

Both user and puzzle ratings update on solve

Glicko updates both ratings

Both user and puzzle ratings update on fail

Glicko updates both on failure

Rating range selection triggers practice mode

Custom range = no rating changes

Rating clamped at minimum 100

Rating cannot drop below 100

Rating clamped at maximum 3500

Rating cannot exceed 3500

One hint maximum per puzzle

Second hint request rejected

Hint highlights piece to move only

Hint shows which piece, not destination

Hint reduces rating gain by 50%

Hint penalty on solve

Hint does not affect rating loss

No penalty on fail

Hints unavailable in Puzzle Rocket

No hint functionality in Puzzle Rocket

Hint resets between puzzles

Each puzzle gets fresh hint allowance

Hint on multi-move puzzle highlights NEXT move

Hint shows current move's piece, not first move

Single-move puzzle completes after one move

Immediate completion for 1-move puzzles

Multi-move puzzle requires all moves

Must complete full sequence

Wrong move fails puzzle immediately

First incorrect move = failure

Multi-move length does NOT affect rating

Rating same regardless of puzzle length

RD decreases after rated activity

More certainty after each game

Provisional rating indicator shown

High RD shows provisional status

Concurrent session prevention

Cannot have same mode in multiple tabs

Puzzle Rocket shows session-end screen only

No puzzle-end modal

GM Move shows session-end screen only

No per-move modal

Other modes show puzzle-end completion

Modal after each puzzle in Tempo, Climb, Calculation, Opening

GM Move is unrated

User rating unchanged after session

Board shows position from PGN

Correct position displayed at each move

User guesses next move

User can make a guess for GM's move

Correct guess feedback

User sees positive feedback when matching GM

Wrong guess shows actual GM move

User sees what GM actually played

Hints available in GM Move

Hint functionality works (unrated)

Session-end shows accuracy summary

Final screen shows overall accuracy

No per-move completion modal

Game flows continuously without modal

Game selection screen shows available games

User can browse and select GM games

Filter by Grandmaster

User can filter games by specific GM

Filter by Opening

User can filter games by opening

Play button navigates to game

Clicking Play starts selected game

Search input works

User can search for games

Layout is responsive

Works on mobile and desktop

Game starts at midgame position

User guesses from midgame, not move 1

Admin uploads PGN with metadata

Backend parses PGN correctly

Sequence ends after defined moves

Session ends at configured end point

User can exit mid-game

Exit before completing all moves

Opening label displayed if available

Shows opening name from PGN metadata

Accuracy calculation is correct

Correct moves / total moves guessed

Opening Puzzles is unrated

User rating unchanged after session

Opening filter works

Puzzles match selected opening

Rating range filter works

Puzzles match selected rating range

Combined opening AND rating filter

Both filters work together

Wrong move fails puzzle

First incorrect move = failure

Session continues after failure

No game-over on failure

Hints allowed with no impact

Hint works (unrated mode)

Puzzle-end completion screen shown

Modal after each puzzle

Coming Soon when mode not available

Fallback for unavailable mode

Banner renders correctly

Page header displays

Empty filter results handled

Graceful handling when no puzzles match

Multiple opening selection works

Can select one or more openings

Session continues after failure

No game-over on failure

User can exit session anytime

Exit ends session and shows stats

Session-end shows puzzle-end screen

Both completion screens shown

Step Size calculation is correct

Step Size = End Rating / Number of Puzzles

Index generation is correct

Indexes calculated as Start + (n * Step)

Rating ranges use offset correctly

Range = Index +/- Offset

Puzzle selected randomly from range

One random puzzle per range

Handles Number of Puzzles = 0 gracefully

No division by zero

Retry when no puzzle in range

System retries to find puzzle

Max retries limit enforced

No infinite loop on empty range

Negative Start Rating handled

Edge case: negative input

Start Rating > End Rating handled

Inverted range edge case

Very large Number of Puzzles handled

Performance with many puzzles

Puzzle Rocket is unrated

User rating unchanged after any Puzzle Rocket session

1-minute duration ends at exactly 60 seconds

Timer accuracy for 1-minute mode

2-minute duration ends at exactly 120 seconds

Timer accuracy for 2-minute mode

3-minute duration ends at exactly 180 seconds

Timer accuracy for 3-minute mode

Survival mode has no time limit

Survival continues indefinitely until 3 failures

Wrong move fails puzzle immediately

First incorrect move = puzzle failure

First failure shows 1/3

Failure counter tracks correctly

Third failure ends game immediately

Session ends immediately on 3rd failure, even with time remaining

Hints are NOT available in Puzzle Rocket

No hint functionality in this mode

Timer expiry ends session

Timer reaching zero ends timed session

Ramp-Up Formula applied to puzzle selection

Difficulty increases progressively per Ramp-Up Formula

Failure counter resets between sessions

New session starts fresh

No puzzle-end modal in Puzzle Rocket

Puzzles transition immediately without completion dialog

Session-end screen shows correct statistics

Summary screen displays accurate stats

Personal bests tracked (Today, Week, All Time)

Best scores are recorded and displayed

Duration options empty shows unavailable state

Graceful handling when API returns no options

Simultaneous 3rd failure and timer expiry

Edge case: both end conditions trigger at once

Browser refresh during timed session

Behavior when user refreshes during active timer

Duration selection UI shows all options

All duration options visible and selectable

Survival mode displays fire icon

Visual distinction for survival option

Game ends on timeout even with strikes remaining

Timer takes precedence over strike count

Start game API error surfaces to user

Error handling for failed game start

Give Up button ends game immediately

User can quit mid-session using Give Up

Play Again restarts with same settings

Play Again preserves duration selection

New Game returns to settings

New Game allows changing settings

Puzzles drawn from all themes

No theme filtering - uses entire database

Longest streak tracked correctly

Consecutive solves counted accurately

Average time per puzzle calculated

Mean solve time shown on session-end

Puzzle Tempo is rated (Glicko)

User Glicko rating changes after solving/failing

Tactical theme filtering works

Puzzles match selected tactical themes

Multiple theme filtering (OR logic)

Puzzles match ANY of selected themes

No theme selection defaults to all themes

Starting without theme selection works (all themes)

Wrong move fails puzzle immediately

First incorrect move = puzzle failure

Fast solve gets maximum SCORE (time bonus)

Quick solve maximizes game score via time bonus

Slow solve gets reduced SCORE (time decay)

Slow solve gives less game score

Glicko rating gain is NOT affected by solve time

Glicko calculation ignores time spent

Hint reduces Glicko rating gain by 50%

Hint penalty applies to Glicko calculation

Streak multiplier increases game score

Consecutive solves multiply game score

Incorrect attempt resets streak and scores 0

Failure breaks streak and earns no score

User exit ends session

Exit button ends session anytime

Session continues indefinitely until exit

No automatic session end

Puzzle-end completion screen shown

Modal after each puzzle with rating change

Rating range selection triggers practice mode

Custom range = no Glicko changes

Start without rating prompts initialization

New user without rating sees init flow

Theme selection toggle and Select All

Theme UI controls work correctly

Ramp-Up Formula applied

Difficulty increases per formula

Rating check failure shows error

API error handling for rating check

Start game failure shows error

API error handling for game start

Board orientation can be flipped

User can play from black's perspective

Legal move highlights shown

Valid squares highlighted when piece selected

Last move highlighted on board

Previous move squares marked

Correct move shows green feedback

Positive visual feedback

Wrong move shows red feedback

Negative visual feedback

Keyboard shortcuts work

Navigate with keyboard

Sound effects can be toggled

User can mute/unmute sounds

Board piece set can be changed

Different piece styles available

Board theme can be changed

Different board colors available

Move history displayed

Shows moves made in puzzle

Rating display updates in real-time

Rating shown in sidebar updates after each puzzle

Timer display accurate (Puzzle Rocket)

Countdown timer shows correct time

Failure counter visible (Puzzle Rocket)

Strike indicator shown

Hint button shows remaining hints

Hint availability indicated

Loading state shown while fetching puzzle

User feedback during load

Responsive layout on different screen sizes

Works on mobile, tablet, desktop

Dark mode support

Puzzle UI adapts to dark mode

Promotion dialog appears

User can choose promotion piece

Check indicator shown

King in check highlighted

Captured pieces shown

Material count displayed

User navigates puzzle with keyboard only

Screen reader / keyboard-only user experience

User uses screen reader with puzzle

Screen reader announces puzzle state and moves

User with color blindness plays puzzle

Visual indicators don't rely solely on color

User increases text size

User with vision impairment zooms text

User with motor impairment uses large click targets

Buttons and controls have adequate size

User with cognitive disability uses clear interface

Interface is simple and consistent

User pauses timed puzzle (if feature exists)

User needs to pause during Puzzle Rocket

User disables animations

User with vestibular disorder reduces motion

User in high contrast mode

User using Windows high contrast mode

User uses voice control

User controls puzzle via voice commands

User plays daily puzzle

User solves the puzzle of the day

User sees daily puzzle streak

User tracks consecutive days of daily puzzle completion

User loses daily streak

User misses a day and streak resets

User compares daily puzzle time with friends

Social comparison for daily puzzle

User plays weekly puzzle challenge

Weekly themed puzzle challenge

User participates in puzzle tournament

Time-limited puzzle solving competition

User receives puzzle reminder notification

User gets reminded to play daily puzzle

User views past daily puzzles

User can replay or review previous daily puzzles

User completes monthly puzzle challenge

Long-term challenge for dedicated players

User plays themed event puzzles

Special event with themed puzzles

New user plays first puzzle ever

Complete first-time user experience from registration to first puzzle completion

User plays complete Puzzle Rocket session (1 minute)

Full user flow through timed Puzzle Rocket mode

User plays Puzzle Rocket Survival until game over

User plays survival mode until 3 failures end the game

User plays rated Puzzle Tempo session with themes

User selects tactical themes and plays rated Puzzle Tempo

User plays Puzzle Tempo in practice mode (rating range selected)

User selects rating range which triggers practice mode

User plays Puzzle Climb and sees difficulty adapt

User experiences dynamic difficulty adjustment in Puzzle Climb

User uses hint in rated mode

User requests hint and sees 50% rating penalty applied

User plays Calculation Mode - Deep Think

User plays long calculation puzzles without time pressure

User plays Calculation Mode - Commitment

User plays with 3-second move timer after first move

User plays Calculation Mode - Checkmate Climb

User progresses through mate-in-1, mate-in-2, etc.

User plays Opening Puzzles filtered by specific opening

User practices tactics from their favorite opening

User plays Guess the Grandmaster Move

User tries to predict grandmaster moves in a real game

User fails a puzzle and sees correct solution

User makes wrong move and views the solution

User completes multi-move puzzle with opponent responses

User plays through a complex puzzle with auto opponent moves

User quits session mid-puzzle

User exits session before completing current puzzle

User views their puzzle statistics

User checks their puzzle history and performance

User returns to continue previous session (if applicable)

User returns and resumes interrupted session

User plays on mobile device

Full puzzle experience on mobile phone

User experiences rating progression over multiple sessions

User plays over days and sees rating change

User explores all puzzle modes from menu

User browses and understands all available modes

User loses internet connection during puzzle

Network drops while user is solving puzzle

User session expires during puzzle

Authentication token expires mid-session

User refreshes page during timed puzzle

User accidentally refreshes in Puzzle Rocket

User navigates back button during session

User clicks browser back during puzzle

User encounters server error

Backend returns 500 error

User double-clicks move too fast

User rapidly clicks causing duplicate submissions

User tries to move during opponent's turn

User clicks during computer response animation

User on very slow connection

User with high latency network

User browser crashes during rated puzzle

Browser force-closes during rated session

User on unsupported browser

User using very old browser version

User encounters puzzle that fails to load

Specific puzzle data corrupted or missing

User on mobile rotates device mid-puzzle

Device orientation changes during gameplay

User has JavaScript disabled

User browsing with JS disabled

User opens puzzle in multiple tabs

Same user plays in two browser tabs

User's clock differs from server

Client system time is wrong

User moves piece by drag and drop

Standard drag-and-drop piece movement on desktop

User moves piece by click-click

Alternative click-to-select, click-to-move method

User attempts illegal move

User tries to make a move that's not legal in position

User moves piece on touch device

Touch interaction on mobile/tablet

User sees opponent's response animated

After user moves, opponent's reply is animated

User flips board orientation

User can view board from black's perspective

User views move history during puzzle

User can see moves made so far in current puzzle

User uses keyboard controls

Keyboard shortcuts for power users

User promotes pawn

Pawn reaches 8th rank and user chooses promotion piece

User makes castling move

User castles kingside or queenside

User makes en passant capture

User performs en passant pawn capture

User sees check and checkmate indicators

Visual indicators when king is in check or checkmate

User sees correct/incorrect move feedback

Visual and audio feedback on move quality

User adjusts audio settings

User controls puzzle audio feedback

User adjusts board theme/colors

User customizes board appearance

User right-clicks to draw arrows/highlight

User can annotate board while thinking

User gives up on puzzle

User surrenders and views solution

User retries failed puzzle (if available)

User replays same puzzle after failure

User shares puzzle with friend

User shares interesting puzzle via link

User reports incorrect puzzle

User flags puzzle with wrong solution or position

New user sees puzzle tutorial on first visit

First-time user gets guided introduction to puzzle interface

User can replay tutorial from help menu

Returning user accesses tutorial again if needed

New user plays guided first puzzle

First puzzle has extra guidance/hints

User sees mode introduction on first selection

Selecting a mode for first time shows explanation

User sets initial skill level

New user can indicate their chess level for better starting puzzles

User links external chess rating

User imports rating from Chess.com or Lichess

Guest user can play puzzles without account

Anonymous user experience for puzzles

User sees tooltips on hover for UI elements

Contextual help via hover tooltips

User accesses help/FAQ during puzzle

User can get help without leaving puzzle

User understands rating confidence/provisional

New user understands why rating has '?' mark

User reviews failed puzzle with solution

User studies correct solution after failing

User analyzes completed puzzle position

User explores variations after solving/failing

User bookmarks puzzle for later review

User saves interesting puzzle to collection

User views puzzle explanation/annotation

User reads expert commentary on puzzle

User sees related puzzles by theme

After solving, user offered similar puzzles

User retries failed puzzle immediately

User attempts same puzzle again after failure

User views puzzle difficulty after completion

User sees how hard puzzle was rated

User sees solve statistics for puzzle

User sees how others performed on this puzzle

User practices specific weakness

User focuses on tactical theme they struggle with

User compares solve to previous attempt

User sees improvement on previously failed puzzle

User reviews entire session performance

Detailed session breakdown after ending

User exports puzzle as PGN/image

User downloads puzzle for external study

User changes board theme

User customizes chessboard colors

User changes piece set

User selects different chess piece style

User enables/disables move sounds

User controls audio feedback

User enables/disables notifications

User controls puzzle-related notifications

User enables dark mode

User switches to dark theme

User enables coordinates on board

User shows/hides rank and file labels

User enables move confirmation

User requires confirmation before move submits

User enables auto-promote to Queen

User skips promotion dialog

User adjusts animation speed

User controls piece movement animation speed

User sets default puzzle mode

User's preferred mode opens by default

User enables legal move highlights

User sees where selected piece can move

User enables last move highlight

User sees what move opponent just played

User resets all settings to default

User can restore factory settings

User settings sync across devices

Settings persist when user switches devices

User views current puzzle rating

User checks their puzzle rating from multiple locations

User sees rating change in real-time

Rating updates immediately after completing puzzle

User views rating history graph

User sees visual chart of rating over time

User sees session summary statistics

End-of-session stats provide complete picture

User views lifetime puzzle statistics

User checks overall puzzle performance

User views performance by tactical theme

User sees which tactics they're good/bad at

User sees personal best records

User tracks their best performances

User views recent puzzle attempts

User reviews individual puzzle history

User earns achievement/badge

User unlocks achievement for puzzle milestone

User sees daily/weekly puzzle streaks

User tracking consecutive days of puzzle play

User compares stats with friends

User sees leaderboard or friend comparison

User exports puzzle statistics

User downloads their puzzle data

User sees improvement suggestions

System recommends what to practice

User sees time-of-day performance

User learns when they perform best

User rating shows provisional indicator

New user's rating marked as provisional