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Guides, tips and news from the SynerWorlds games — read up, then play to practice.
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Cờ Gánh Endgames: Winning by Blockade, Liberty Races, and the Two Faces of the Fortress
As the board thins, Cờ Gánh becomes arithmetic: winning by leaving the opponent no move, liberty races between mutually surrounded groups, the endgame carry trap, and why a self-surround fortress can become a coffin.
Ô Ăn Quan vs Mak Khom: One Mancala Family, Two Philosophies of Sowing
Vietnam's Ô Ăn Quan and Thailand's Mak Khom (หมากขุม) sow seeds into stores the same way but differ on everything else: free vs fixed sowing direction, forward chain captures vs the sideways kin thaen, a reseed tax vs a game-ending sweep — and which skills transfer.
Ô Ăn Quan Strategy: Count the Seeds, Chain the Captures, Never Let Your Land Burn
Ô Ăn Quan is deterministic arithmetic on a 12-cell ring: count where the last stone lands, build empty-full bridges for capture chains, watch both mandarins ripen past 5 stones, and avoid the 5-stone reseed tax.
Xiangqi Skills That Make You Better at Chess (and Back Again)
X-rays and batteries learned from the Cannon, blocking-square calculation from the hobbled Horse, rook endgames, planning from chess — the skills that genuinely transfer between the two games.
Cờ Gánh Tactics: Double Captures, Group Surrounds, and the Mandatory-Capture Trap
Force a bad mandatory capture, pre-load the axes for double carries at the centre, count breathing points to strangle whole groups — three ideas that decide strong Cờ Gánh games.
Mak Khom (หมากขุม) is live: the Thai sowing game of relay drops and kin thaen captures
Mak Khom (หมากขุม) is live at makkhom.synerworlds.com — the Thai folk sowing game of the Congkak family: relay sowing, store-landing bonus moves, kin thaen opposite captures, a 12-level AI, two-player rooms, interactive lessons and a daily puzzle.
Reversi Launches — Play Free in Your Browser
Reversi (Othello) is live at reversi.synerworlds.com — standard 8×8 outflank-and-flip rules, 12-level AI, two-player rooms, uniquely-verified puzzles, 6 strategy lessons and all 26 locales from day one.
Dark Xiangqi Launches — the 14th Game in the SynerWorlds Family
Dark Xiangqi (Jieqi) is live at cotuongup.synerworlds.com — a full xiangqi board with 15 shuffled face-down pieces, 12-level AI, server-verified game rooms, a daily checkmate puzzle and Puzzle Rush.
How to Play Go — Beginner's Guide
Learn Go from zero: the board, liberties and capturing, how scoring works, and basic beginner tips.
"O An Quan — a beginner's guide"
O An Quan** ("Mandarin Square Capturing") is Vietnam's beloved mancala-style folk game. The board is a **ring of 12 pits** (2-player game): 10 small dân (citizen) pits and 2 large quan (mandarin)...
"Co Ganh — a beginner's guide"
Co Ganh** is a folk game of Vietnam played on a 5×5 board with diagonals at certain intersections (Alquerque-style). Each side has **8 discs** — red on the top two rows, blue on the bottom two...
"Ca Ngua — a beginner's guide"
Cờ Cá Ngựa** ("Vietnamese Horse Racing") is Vietnam's classic pachisi-style race game for **2–4 players**, each with **4 horses** (red, yellow, blue, green). Horses run **one counter-clockwise...
The Complete Feature Guide — Game Rooms, Challenges, Correspondence Chess and More
Discover every feature of Chess Online: play vs the computer across 10 levels, realtime game rooms, friend challenges, correspondence chess, puzzles, leaderboards and push notifications.
How to Play Chess — Beginner's Guide
Learn chess rules, piece movements, and basic strategies. Free bilingual guide (English/Vietnamese).