Simple. Effective. I bought them in quantity to give to my students and to use.
Best Chess Scorebook For Tournaments?

Any spiral scorebook is good, but slightly prone to breaking and damage; still I would suggest any basic one, like the one shown previously, they're only about $3.00 and some tourneys will sell them for $2.00 (~$3.00 usd)
The notebook-style books are bulkier, but more sturdy, my biggest issue is that they will refuse to stay open during a game, and you will either have to keep a bookmark, flip to the game every move, or awkwardly position your arm or pen inside the book (as a chronic fidgeter, not being able to use my pen is a massive no-no) (~$12.00 usd)
There's also paperback books, but I've never seen or used one so idk (~$6.00 usd)
You could also use carbon-copy sheets (~$9.00 usd / 100 sheets)
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All-in-all I would suggest the spiral scorebook, they're cheap, they work, they're easy to use, and if you need to give another player a sheet for any reason you can tear one out without it looking terrible.

Another point about those scorebooks that refuse to stay open: it is a rule that your scoresheet must be visible to your opponent.

Any spiral scorebook is good, but slightly prone to breaking and damage; still I would suggest any basic one, like the one shown previously, they're only about $3.00 and some tourneys will sell them for $2.00 (~$3.00 usd)
The notebook-style books are bulkier, but more sturdy, my biggest issue is that they will refuse to stay open during a game, and you will either have to keep a bookmark, flip to the game every move, or awkwardly position your arm or pen inside the book (as a chronic fidgeter, not being able to use my pen is a massive no-no) (~$12.00 usd)
There's also paperback books, but I've never seen or used one so idk (~$6.00 usd)
You could also use carbon-copy sheets (~$9.00 usd / 100 sheets)
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All-in-all I would suggest the spiral scorebook, they're cheap, they work, they're easy to use, and if you need to give another player a sheet for any reason you can tear one out without it looking terrible.
And you must use a pen, not a pencil, right?

You can use both pencil and pen, most players actually use pencil in the case that they accidentally forgot to write down a move so then they can erase their move and look at the opponents scoresheet (after asking for permission) so they can fix their mistake (you can only ask during your turn.

Simple. Effective. I bought them in quantity to give to my students and to use.
I got this before but now my games go like 80-100 moves

I prefer the tournament provided scoresheets. No one wants to think about an opponent who might see a previous game score.

I use tournament prvided scoresheets as well. I like to reduce distraction and seeing an old score sheet would make my mind wander back to that game rather than focus on the game at hand.
I use tournament prvided scoresheets as well. I like to reduce distraction and seeing an old score sheet would make my mind wander back to that game rather than focus on the game at hand.
Actually, wouldn't it be illegal if you looked at a prior game's score?

I prefer the tournament provided scoresheets. No one wants to think about an opponent who might see a previous game score.
With most scorebooks, the only visible page is the one you are writing on.

Yeah plus it does not really matter if your opponent sees a previous game score because they can just see it in the tournament results of that round
Yeah plus it does not really matter if your opponent sees a previous game score because they can just see it in the tournament results of that round
By "score" mean the game moves. Not the result. And could see prior tournaments, too.

Oh i see but like the other guy said scorebooks can just fold into one page and you have to leave it displayed on the table at all times so they are perfectly fine.
Oh i see but like the other guy said scorebooks can just fold into one page and you have to leave it displayed on the table at all times so they are perfectly fine.
Yes, correct. I should use one but mostly just use score sheets provided by the director as many times they want a copy.
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What chess scorebooks do you all use in tournaments?
Thanks,
Pere