Chess match test · Jev Broadcast Lab

Black —

White —

—

no ply

Pick a match type and start.

Stockfish review Operator only

Waiting for analysis

Starting position —

Evaluation history appears as positions are reviewed.

White above center. Black below. Click a ply in the list.

Moves

Match

You play

WHITE

Agent—

Last—

MaterialEven

Confidence—

Jev mass

Running reviewStockfish

Accuracy (estimated)—

Average CP loss—

Inaccuracies / mistakes / blunders0 / 0 / 0

Moves reviewed0

BLACK

Agent—

Last—

MaterialEven

Confidence—

Jev mass

Running reviewStockfish

Accuracy (estimated)—

Average CP loss—

Inaccuracies / mistakes / blunders0 / 0 / 0

Moves reviewed0

JEV SCORE

Elo from Jev’s ACPL vs a deep-engine review curve. Depth 10 is scaled up. Stockfish itself does not go below 1320.

Est. Elo—

Stockfish skill—

Jev W-D-L0-0-0

White / Black wins0 / 0

Draws0

Games0

Career accuracy—

Career ACPL—

Rack

Operator review

Stockfish evaluates for the operator. Jev uses its own move choices.

Pace after ply (ms)

Candidate cap

Payload

Analyst fan-out (plan / quality / sharp)

White instructions

Black instructions

The instruction box barely moves Jev. It only picks among the LAN list chess.js already filtered: mates only if any, then no stalemate, repetition, fifty-move, or futile checks. Tags are 1-ply facts, not a search.

Timeout (ms)

Start FEN (optional)

Sent / legal—

Tokens—

Stockfish review Operator only

Moves

Promote

Game over