Pairstrike Garden

Original19×19 pair-capture strategy with the basic center opening: Mint starts at J10. Alternate an empty intersection; five or more connected own stones in any straight direction wins. Bracket exactly two opposing stones against an existing own stone to capture a pair in any of eight directions. Remove all simultaneous pairs; five captured pairs also wins. Captured cells can be reused; no self-capture or capture cascades. Full board without winner draws. Basic rules without the optional tournament opening restriction.

One human against a same-rule line/capture/defense bot, exact local and online two humans. Line and capture preview, separate48pxPlace/cursor/zoom below native board, bounded mint/amber stones and original garden artwork/audio. Solo Undo restores decision, captures and reply; English/PT Help and rematch.

Public online histories replay-validated;60-second turn expiry forfeits and terminal outcome acknowledged. Casual host-managed results unverified. Departure/background/deadline aborts without result; no reconnect/migration. Portrait preferred; landscape supported.

• Initial WASD/arrows select; Initial Space/Enter/Numpad Enter places at the first press; F is an alias
• Mouse/touch: completed click/tap on a legal point places directly; invalid/forbidden points only preview
• Local Mint: WASD/Space/F/H; Amber: arrows/Enter/Numpad Enter/Right Shift
• H plans a hint without placing; U undoes solo; Z zooms; native Place remains available
• Escape closes Help first; Escape/P pauses/resumes solo/local; M mutes; F1 opens Help; online Help stays live
• Native focus, IME, modifiers and held keys preserve ordinary behavior; canceled contacts/lifecycle changes never place
• Portrait preferred; landscape supported; controls remain outside the board