F

Forge Chess Lab

Play, analyze, and run engine matches

Position Ready

Clocks

Black 10:00

White 10:00

Engine Idle

Depth 9

Fork the Fruit Find the forks. Harvest the points.

Score0 Moves0 / 50 Last fork—

Designing puzzle… Playing and analyzing engine games

Moves

Coach

No line

Start analysis to preview candidate moves.

Analysis Board

Preview 0.00

AI Tournament

Games Depth Opening shuffle

Results 0-0-0

New game

Choose a game

Choose a chess game or play American checkers with forced captures.

Options

Time Controls

Set the starting clock and increment for new local games.

Base minutes Increment seconds

Engine Settings

Control playing strength, thinking time, and local engine assistance.

Engine strength 8 — Strong Engine cutoff (milliseconds) Analyze after every move Think on the player's time Allow engine resignations Allow engine draw offers Respect repetition and 50-move draw rules Use local opening book Use local endgame reference

Graphics

Choose the board palette used throughout local and multiplayer games.

Board theme Soft ivory and traditional green.

Board preview

Chess glyphs Traditional filled chess silhouettes.

♚ ♛ ♜ ♝ ♞ ♟

Import / Export

FEN PGN

Share Trainer Puzzle

Copy this FEN to share the generated starting position.

FEN

New multiplayer

Choose a game

Choose a game. Both players will share the same starting position and rules.

New Multiplayer

Standard

Join link

You start as Time control Handicap

Create a session to get a join link.

Training arcade

Choose a minigame

Pick a challenge. More games will join the arcade over time.

Game request

Your opponent has sent a request.

Engine resigns

You win. The engine considers its position lost.

The result is acknowledged, but the board remains active so you can continue playing out the position.

Engine offers a draw

The engine would like to end the game as a draw.

50 moves complete

Fork the Fruit

Final score 0

Sign your score

Your score is saved only after you lock it in.