Flatsonar

Pawns

by Alamahant

Local and p2p chess

Sandboxed Verified creator GPL-3.0-or-later v1.0.1

Support the creators

Flatsonar is just the shop window. The people below made Pawns.

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About

Pawns is a feature-rich chess application that lets you play against Stockfish engine, challenge friends in local or remote p2p play, create custom scenarios, and analyze games.

Game Modes:

  • Human vs Human - Play with a friend on the same computer
  • Human vs Engine - Challenge Stockfish at adjustable difficulty (0-20)
  • Engine vs Engine (E2E) - Watch two chess engines battle it out
  • Remote Play (P2P) - Play against a friend over the network with SSL encryption

Visual Customization:

  • Multiple piece sets (Celtic, Fantasy, Eyes, Skulls, Spatial, and more)
  • Board color themes (Classic, Wood, Green, Blue, Gray, Brown)
  • Customizable background color behind the board
  • Zoom with Ctrl+Mouse Wheel
  • Toggle board markings (rank and file labels)

Time Controls:

  • Customizable time controls (1-60 minutes)
  • Increment options (0-30 seconds)
  • Visual clock display with progress bars
  • Time-out detection (flag falls)
  • Clock synchronization in remote play

Tools:

  • Scenario Builder - Create and save custom board positions
  • Save and Load games in .chess format (full state with clocks and difficulty)
  • PGN export for sharing games
  • Move history with table view in the dock
  • Game replay with media-style controls
  • Console for engine output and UCI commands

Remote Play:

  • SSL-encrypted P2P connection
  • Contact list with IP/port storage
  • In-game chat
  • DTLS encrypted push-to-talk audio
  • LAN peer discovery via UDP broadcast
  • UPnP port forwarding support
  • Resign, draw offer, and stop game functionality

Engine Support:

  • Stockfish engine with Skill Level control (0-20)
  • GNU Chess engine support (XBoard mode)
  • Move validation and position analysis
  • Checkmate, stalemate, and draw detection

Audio Feedback:

  • Move sounds
  • Check notification
  • Checkmate sound
  • Toggle sound on/off

Permissions

Everything this app can reach outside its sandbox. Nothing here weakens it.

  • inter-process communication (needed for X11)
    --share=ipc
  • network
    --share=network
  • X11 display, only when Wayland is unavailable
    --socket=fallback-x11
  • audio
    --socket=pulseaudio
  • Wayland display
    --socket=wayland
  • GPU acceleration
    --device=dri
  • access to xdg-config/kdeglobals
    --filesystem=xdg-config/kdeglobals:ro
  • talks to com.canonical.AppMenu.Registrar
    --talk-name=com.canonical.AppMenu.Registrar
  • talks to org.kde.kconfig.notify
    --talk-name=org.kde.kconfig.notify
  • talks to org.kde.KGlobalSettings
    --talk-name=org.kde.KGlobalSettings

Who publishes this

The creator demonstrably controls this app id: Flathub verification, the hosting account owns the namespace, or a well-known file on their domain.

  • verified on Flathub: the developer proved they control this app id
    publisher:flathub

Maintenance

Recent activity on the upstream repository, or built and reviewed by Flathub.

No staleness signals: recent activity, or built and reviewed by Flathub.