New Features & Improvements
Matching candidate highlight — When you select a number, every cell that has it pencilled in as a candidate lights up too, so you can instantly see where that number can still go.
Expanded keyboard controls with new shortcuts:
1–9 — Enter a number
Shift + 1–9 — Pencil mark (works on both the main row and the numpad)
0 / Del / Space — Erase
Arrow keys / WASD — Move the selected cell
Ctrl + Z — Undo (with sound)
Shortcut guide:
Level 1 and the tutorial show a shortcut list in the bottom-left corner — close it anytime with the ✕ button.
The pause menu (Esc) now has a Shortcuts button to view them during play.
Fixes
Fixed uneven spacing (and a sharp corner) on the selected-cell outline along the board's edges and corners.
Fixed a rare case where an incorrect window resolution left the board off-center.
Numpad number keys now always act as number input and are never mistaken for arrow keys.