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Ridge Five
4 plays Published Oct 4, 2026 Version 1
Build exactly five stones on an open 15×15 grid, block threats and use crossing lines to win.
Original exact-five open-grid strategy,15×15 and Blue first. Alternate a stone on an empty cell. Exactly five continuous stones in any straight direction wins; overlines are legal but do not win. Full board without five draws. Declared casual free opening, no Swap2/Renju bans or tournament equivalence.
One human versus a same-rule threat-aware bot; exact local/online two humans. Legal selection preview and separate placement, cursor/zoom, native responsive board, bounded artwork, original sound, English/Portuguese help, solo Undo and rematch.
Online public histories replay-validated,60-second turn forfeit and acknowledged terminal result. Casual host-managed outcomes unverified; departure/background/deadline safely aborts. No reconnect/host migration. Portrait preferred; landscape supported.
How to play
- Select with arrows/WASD; release F/Enter to place; H suggests without placing
- Touch/mouse: tap a cell to preview, then separate Place below the board
- Large cursor arrows and zoom help dense boards; Undo solo only
- M mute; Escape pause solo/local; online Help stays live
- Portrait recommended; landscape supported
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