Current settings buttons doesn't fit screen width:

Changes:

• using Wrap instead of rows for settings
• changed way of displaying setting ElevatedButton content
• added New Round button
• changed Undo button
  

Same for Landscape orientation:

But here still some issue with scaling:

Something going wrong when board inside Expanded:

Expanded(
  child:  Chessboard(.
    size: screenWidth, // ??
  ..),
),
Expanded(
...
),

Checked flutter_chess_board library and looks it performs correctly:

but maybe it is issue to resolve on another PR