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KatzChess — Master-Level Chess Tutoring & Daily Practice — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Board Games And Puzzles →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
vitechess.com ↗	70 match 1 shared topics	Vitechess — Learn chess by practice, not by rote	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
8chess.app ↗	69 match 1 shared topics	8Chess — Smart Chess Training. Faster Improvement. - 8Chess	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
enpassant.app ↗	68 match 1 shared topics	Learn Chess Openings \| Practice & Master Opening Theory \| En Passant	en	board-games-and-puzzles	robots llmsaihumans	emailphone	none
3dchess.org ↗	67 match 1 shared topics	3DChess — Next-Gen Chess	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
ankouchess.com ↗	67 match 1 shared topics	AnkouChess — Free Chess Training: Openings, Puzzles & Stockfish Analysis	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
kaspatec.com ↗	67 match 1 shared topics	ChessMo by KaspaChess \| Kaspatec — Chess Training & Business Tools	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
2pchess.com ↗	66 match 1 shared topics	2PChess — Play Chess Instantly	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
0blunders.com ↗	66 match 1 shared topics	Chess Focus - Master Your Game	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
relojajedrez.com ↗	66 match 1 shared topics	Clock Chess - Digital Chess Match Timer	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
onlinechess.com ↗	66 match 1 shared topics	iChess • Play Chess vs Computer	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
247chess.com ↗	66 match 1 shared topics	Chess 247 - Play Free Chess Games Online	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
onlinechesscoaching.com ↗	66 match 1 shared topics	Online Chess Coaching for Kids \| Kids Chess Academy	en	board-games-and-puzzles WordPress WooCommerce	robots llmsaihumans	emailphone	none
3d-chess.org ↗	66 match 1 shared topics	Fae Chess – Multi-Dimensional Chess Games	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
365chessacademy.com ↗	66 match 1 shared topics	Killer Chess Training	en	board-games-and-puzzles WordPress WooCommerce	robotsllmsaihumans	emailphone	none
chessmanager.com ↗	66 match 1 shared topics	ChessManager - Chess Pairing Software	en	board-games-and-puzzles	robotsllmsaihumans	email phone	partial · 8
repertoiretrainer.com ↗	65 match 1 shared topics	Repertoire Trainer - Master your Chess Repertoire	en	board-games-and-puzzles	robotsllmsaihumans	emailphone	none
chesson.ch ↗	65 match 1 shared topics	Chesson – Personal Chess Trainer	Switzerland en	board-games-and-puzzles WordPress	robotsllmsaihumans	emailphone	none
houstonchess.com ↗	65 match 1 shared topics	Houston Chess – Houston Area Chess Activities	United States~ en	board-games-and-puzzles WordPress	robotsllmsaihumans	emailphone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.