Chesshire — Stockfish 19 WebAssembly Suite

0.0

⚡ Engine Evaluation SFNNv18

Threads

Hash

Lines

All

Score

0.0

Win %

50%

Depth

Speed

Nodes

Engine ready. Make a move to start deep calculation...

📚 Syzygy Tablebase 7-Piece

Standby (>7 pcs)

♟️

7-Piece Endgame Explorer Syzygy tablebase activates automatically whenever 7 or fewer pieces remain on the board.

📋 Move History

0 moves

#	White	Black

🤖

Stockfish 19

Grandmaster Level • Lvl 20 (~3190 Elo)

03:00

⚔️ Match Setup

Play As

Time Control ⚡ Blitz 3 | 2

Bot Strength

Lvl 20 (~3190 Elo)

👤

Human Player

You

03:00

🎨 Piece Palette Drag piece to board or select to place

White

Black

⚙️ Game State & Rules

Side to Move

White to move Black to move

Castling Availability

White O-O (K) O-O-O (Q)

Black O-O (k) O-O-O (q)

Tournament Clocks & En Passant

En Passant Target

Halfmove Clock

Fullmove Number

♟️ Position String (FEN)

🔍 Search & Filter Openings 355 Theory Lines

🌳 Opening Theory Tree Interactive

Move & Opening Line

ECO Classification Vars

ECO B00 ⭐ Main Line 0 moves

King's Pawn Opening

Line:

Start

The most popular opening move in chess. White stakes a claim in the center, occupies e4, and frees diagonals for the queen and light-squared bishop.

Branch Continuations in Book 0 branches

Tier	Skill Level	Est. Elo	Characteristics
🟢 Beginner	Level 0 – 2	~1100 – 1320	High blunder rate, depth 1, ideal for casual learning.
🟢 Casual	Level 3 – 5	~1400 – 1550	Basic tactical awareness, occasional tactical oversights.
🔵 Intermediate	Level 6 – 8	~1600 – 1800	Solid opening principles, punished obvious blunders.
🟣 Advanced	Level 9 – 11	~1900 – 2150	Strong club player, deep tactics, punishing calculation.
🟣 Candidate Master	Level 12 – 14	~2200 – 2450	High positional precision, rarely misses tactical shots.
🟡 Master	Level 15 – 17	~2500 – 2800	Master-level endgame and positional mastery.
🔴 Grandmaster	Level 18 – 20	~2900 – 3190+	Full Stockfish 19 strength with SFNNv18 neural evaluation.

Volume	Code Range	Primary Opening Families
Volume A	A00 – A99	Flank Openings (English, Réti, Bird), Dutch Defense, Benoni, King's Indian Attack.
Volume B	B00 – B99	Semi-Open Games (excluding French): Sicilian Defense, Caro-Kann, Pirc, Alekhine.
Volume C	C00 – C99	Open Games (1.e4 e5) & French Defense: Ruy Lopez, Italian, Scotch, Petroff, King's Gambit.
Volume D	D00 – D99	Closed Games (1.d4 d5) & Grünfeld: Queen's Gambit, Slav Defense, London System.
Volume E	E00 – E99	Indian Defenses: King's Indian Defense, Nimzo-Indian, Queen's Indian, Bogo-Indian, Catalan.

Key	Action	Context
← (Left Arrow)	Previous Move — Step one ply backward in history.	Any board mode
→ (Right Arrow)	Next Move — Step one ply forward in history.	Any board mode
↑ (Up Arrow)	First Move — Jump directly to the starting position.	Any board mode
↓ (Down Arrow)	Latest Move — Jump to the most recent position.	Any board mode
F or f	Flip Board — Invert perspective between White and Black.	Any board mode
Space	Toggle Engine — Pause or resume Stockfish 19 calculation.	Analysis mode
? (Shift + /)	Open Documentation — Launch this guide and reference.	Global
Esc	Close Modal — Dismiss any active dialogue or popup.	Global

King's Pawn Opening

Stockfish 19 WASM

SFNNv18 Neural Network

Zero-Copy SAB Buffer

Pthread Multi-threading

Loading Stockfish 19