This is a Web Sudoku game helper tool powered by react.

Try it.

https://hyperwood.gitee.io/sudoku-tool/

or

https://sudoku-tool-50e2d.web.app/

shortcuts

Keys	action
N	start new game
shift_enter	start game with inputed puzzle
n	toggle noting mode
ctrl_n	auto note
a	toggle Almost Lock Set Chain
ctrl_a	toggle show available area
digit 1,2...9	select digit or set digit for selected cell
s	solve
r	reset puzzle
e	erase cell
b	select board center
d or esc	deselect
t	find or handle tip
x	cancel current tip
when tip is trial-error
y	jump to trial-start history point
when tip is chain
y	jump chain one step back
u	jump chain one step forward
end when
p	auto place/pointing/claiming
when board is selected
h	left move position in board
l	right move position in board
j	down move position in board
k	up move position in board
when digit is selected
h	left change selected digit
l	right change selected digit
j	left change selected digit
k	right change selected digit
when in deselected mode
h	jump to first history point
l	jump to latest history point
j	jump to previous history point
k	jump to next history point
end when