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♟ Chess Tools
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Must-know theoretical wins, draws, and classic fortresses
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🎲 Procedural Tablebase Drills (Random Scenarios)
Infinite sharp positions drawn from 7-piece Syzygy tablebases
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♟️ Endgame Drill
⭐Win with White: Keep the win
Your turn (White)Syzygy Active
🎯Make your move
Play the sharpest line to maintain the theoretical evaluation.
📖 Theory & Key Concepts▼
Loading instructional theory...
Move History
No moves made yet.
Stockfish: evaluating...
Line: ...
🛠️ Custom Material Drill Builder
Pick custom pieces for White and Black (maximum 7 pieces total for Syzygy tablebase support):
⚪ White Pieces
♙ Pawns:
♘ Knights:
♗ Bishops:
♖ Rooks:
♕ Queens:
⚫ Black Pieces
♟ Pawns:
♞ Knights:
♝ Bishops:
♜ Rooks:
♛ Queens:
Total Pieces: 4 / 7 (Valid)
🧱 Pawn Structures & Positional Motifs Academy
🧱 Pawn Structures & Positional Motifs
Master the underlying skeleton of chess strategy: Learn thematic pawn breaks, outposts, and plans across 29 classic structures.
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Structures Studied
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0
Quizzes Solved
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0
Mastery Streak
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🧱 Structure Study
Carlsbad Structure
1.d4 Classical
💡 Interactive Sandbox: Drag & drop pieces freely on the board to experiment with moves. Use the tabs on the right to learn the GM plans, step through model games, or take the strategic quiz!
⚡ Thematic Pawn Breaks & Outposts:
🎯 Grandmaster Plans for White
Loading White's strategic blueprint...
🛡️ Grandmaster Defense & Counterplay for Black
Loading Black's strategic blueprint...
Model Game
Step through the key moves to see this structure in master play.
🧩 Test Your Strategic Judgment
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🧒 Kid's TrainingEntry Level
Piece Hunt ArenaKid's Training
Capture as many pieces as possible in 60 seconds with a single champion and 3 lives.
🎮
0
Games Played
🎯
0
Total Captures
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0 pts
High Score
⚡
1x
Best Combo
Choose your champion
⏱️ 60s Clock : Eat as fast as you can
❤️ 3 Lives : Avoid red enemy danger squares
🔥 Combos : Capture within 3s for up to 4x points
Piece Hunt Arena
Knight — capture without getting caught.
L-Shape Leaper
60 s
Time
0
Score
0
Captures
—
Combo
Lives♥♥♥
Click a reachable square or drag your champion. A piece highlighted in red can capture you!
Piece Hunt Arena
Round finished.
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Score
0
Captures
0
Record
Great hunting! Chain quick captures to build up the combo multiplier.
Best scores — Knight
No scores recorded yet.
⚡ Woodpecker JuniorTactical Mastery
Build instant subconscious pattern recognition through repeated speed cycles!
🐣 Stage 1: Warm-Up (20)
Cycle 1 : Baseline
Ready for Workout
Solve all 20 puzzles at your own pace. In Cycle 2, your target will be to solve them 20% faster!
Target TimeEstablish Baseline
Puzzles Completed0 / 20
Accuracy--
Speed Boost--
Reflex Skill Badges
⚡
Lightning Reflex
< 3.0s (Instant Intuition)
0
🦅
Eagle Eye
3.0s – 8.0s (Sharp Vision)
0
🦉
Thinker
8.0s – 20.0s (Calculating)
0
🐢
Needs Repetition
> 20.0s or Retried
0
📜 Cycle Progression History
Cycle
Date
Total Time
Target Time
Accuracy
Speed Gain
Status
No completed cycles yet. Complete Cycle 1 to see your speedup curve!
🎯 Stage 1: Mate in 1#1 / 150
Cycle:00:00
0.0s
🔥 3 Streak
⚠️ Try 2
⚪ White to Move
Find the 1-move checkmate!
⚡
Lightning solve! (1.8s)
🎯 Move AttemptsTry 1
💡 Hint:Look for a rook checking on the back rank!
👁️ Solution:1. Ra8#
ℹ️Puzzle Info
Stage 1▼
Theme🎯 Mate in 1
Rating⭐ 450 Elo
Source📖 Laszlo Polgar 5334
GoalFind checkmate in 1 move
FEN String
8/8/8/8/8/8/8/8 w - - 0 1
🏆
Cycle 1 Complete!
Outstanding work! You finished all 150 puzzles!
Total Time
18m 24s
Target Time
--
Accuracy
94.2%
Speedup Boost
+42.5%
🎉
STAGE UNLOCKED!
Stage 2: Explorer
Phenomenal! You achieved 100% accuracy and unlocked the next Woodpecker stage!
🎯 Next Target for Cycle 2
Your new time goal is 9m 12s (half of Cycle 1). Replaying the exact same 150 puzzles builds lightning reflexes!
🌳 Opening LabRepertoire Tree
🛡️
Best Scoring Weapon
—
Highest conversion variation (≥ 55% W)
⚠️
Worst Repertoire Leak
—
Branch needing repair (< 45% score)
📖
Avg Theory Depth
0.0 moves
Moves played before exiting repertoire
📊
Games Analyzed
0 games
Online, Arena & Bot sparring games
rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -
CURRENT LINE
Start Position
REPERTOIRE CONTINUATIONS0 moves
Click any move to explore down the tree
Move
Games
Results (W / D / L)
Score
Status
No games recorded in this position yet.
⚠️ LEAK DIAGNOSTIC
Underperforming Variation Detected
You have a low conversion rate in this line. Common tactical causes include premature king attacks or loose center pawns.
🥋 SPAR WITH MAIA
Play your move on the board. The engine will respond with the opponent's most punishing move.
You have no active mistakes pending review! Any puzzle you fail in regular Puzzle Training will automatically be tracked here for iterative 5-solve retention.
📖 My Repertoires
Personal Opening Repertoires
Build, extend, and master your opening trees with transposition-aware analysis and spaced training.
Loading your opening repertoires...
New Study Setup
Create Opening Repertoire
Choose your color, name your study, and play the first 2 moves on the board to anchor your opening tree.
♔
White Repertoire
You play 1st (Move 1 is yours)
✓
♚
Black Repertoire
You respond (Move 2 is yours)
✓
A personal label to identify this specific repertoire study.
Play Move 1 for White
Pick Opening From Won Games0 wins
Loading your won games from Library...
Recorded Root Sequence
Move 1: —Move 2: —
A00—
White to movePly: 2
0.0
LINE:
⚪ WhiteECO: B1012 Moves in Tree
Study Name
Official Opening Name
Moves From This Position
Continuations stored in your repertoire.
0 options
💡Play any move on the board to create a new branch or extend your repertoire!
Repertoire Explorer
Hierarchical view of all branches.
Import & Append PGN to Repertoire
Upload a single game, chapter, or database. Matching games (—) will be merged: new variations are added, lines extended, and notes safely appended without overwrites.
📁
Drag & Drop .PGN File Here
or click to browse from your device
Or paste raw PGN text directly▾
Processing games...
✅PGN Merge Complete
0Processed
0Matched
0Skipped
0New Positions
0Reinforced Lines
📜Merged Sources History
0 sources
Position Annotation
Personal ideas, tactical motifs, or plans for this position.
Saved!
⚪ WhiteECO: B10
Study: Study Name
Explore and master your opening repertoire
+0.00Engine
Your turnMove 1+0.00
0.0
LINE:
⚔️
Opponent Continuations
Click any continuation below to play it on the board.
0 options
📖
Dual Move Commentary
Paired coaching ideas and annotations from your repertoire.
⚪White's Move: —
No annotation recorded for this move.
⚫Black's Reply: —
No annotation recorded for this move.
⚡ Move-by-Move Drill⚫ Playing as BlackECO: Custom
Repertoire Drill
Master your opening horizontal depth layer-by-layer.
STAGE PROGRESSION
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Adventure Stages
Complete all variations in each stage with 100% accuracy to unlock the next move depth.
Failed Variations
Review your wrong movements and see the correct repertoire replies.
Drill Session History
Track your progress and accuracy across completed move stages.
Stage 1: Move 2Position 1 / 14
Attempts:
⚫ Black to move
Play your repertoire response for Black.
🏆
Stage Mastered!
You successfully answered every opponent reply!
First-Try Accuracy
100%
Next Stage
Unlocked 🔓
Position⚫ Black to move
⚠️
Duplicate Source Detected
This file or content has already been merged
You already imported
on
().
Re-importing will reinforce move frequencies and scan for any newly added variations. Existing unique notes will not be overwritten.