Show HN: Light Flip – A cell inversion puzzle game

[mcphage]

Why is this one different from the hundreds of similar clones?

[rmal30]

Lights Out flips the neighbouring cells, this game flips all cells in the same row or column

[bbcbasic]

On even board to flip a square, hit square and hit all other squares in the same row and all other squares in the same column.

To flip 4 squares in a 2 x 2 arrangement, hit all of those 4 squares.

What makes the bigger grids hard is the size of my little finger.

[vsviridov]

This reminds me of a puzzle in an old point-and-click adventure with a Fridge with a lock like this...

http://questgame.ru/images/pilots/2.jpg

[nickcw]

I had fun playing this game for a while. Eventually I discovered some fairly reliable algorithms which enabled me to collect all the achievements. I'd like some bigger boards to have a go with now!

[rmal30]

Glad to hear that you're enjoying the game! I've added the 8x8 board. In the average case, it can be solved in around 32 moves using the most optimal algorithm.

[smcmurtry]

I haven't downloaded the app, so maybe this makes sense somehow, but the following text from the app description confused me:

Difficulty ratings:

- 2x2 board - Easy

- 3x3 board - Easy

- 4x4 board - Hard

- 5x5 board - Medium

- 6x6 board - Impossible

- 7x7 board - Hard

Shouldn't the difficulty rating increase with increasing board size?

[rjp0008]

Solving an even square might be inherently harder than an odd square. I haven't played the game though.

[fluffyllemon]

Strategy that seems to be pretty effective: click all the squares that are originally yellow

[vgddvh]

Why would anyone play this game when he could just diagonalize (nxm)x(nxm) matrix in F2 and get a basis? (in case of non-singular, otherwise impossible) upd: misunderstood the game, it's about solving Ax=b in F2, so Gauss elimination.

[nhebb]

Yeah, that's what the rest of us were thinking as well.