if there is a best response, it would be used exclusively. There is no best response to 1. d4.
Response to 1. d4 as black?

if there is a best response, it would be used exclusively. There is no best response to 1. d4.
Ok, no I do not believe there's a 'best' response but I'll try them out. Thanks

I have had 1. d4 played a lot of times against me when I am black and I am trying to think of which response might be best. I usually respond with d5 but I am thinking if there are any more 'tactical', or better responses. I have looked at a few responses and have come up with the following:
1. d4 Nf6
2. d4 f5
3. d4 e6
4. d4 d6
5. d4 g6
I am unsure which of these I could use against 1. d4. It would be helpful if I just got a few opinions on these responses. Thanks!
britishquaker
Each variation has it's pro's and cons
Nf6, f5 and d5 are probably strongest because they stop e4.
E6, d6 and g6 give the centre to white so black can later counter attack it.
On the (super) GM level, Nf6 is mostly played. This is because Nf6 is the most flexible move to stop e4 (d5 is less flexible because you can never play d6-c5 or d6-e5 pawn chains if u want to later on in the game)
According to Dereque Kelley the nimzo indian (arising from 1.d4 Nf6) is the most sound opening after 1.d4:
https://www.youtube.com/watch?time_continue=467&v=zOtapT2M2dQ
Honestly I think two moves aren't enough to have a good opening defense yet so I would look at the first 5-10 moves of the main line and sideline of the opening defense you want to learn to 1.d4. Queen's Gambit for instance (1.d4 d5 2.c4) has some lines you need to know as black if you want to play it without giving your opponent a better position or material profit.

Play Nf6. It is by far the most flexible move and leads to many solid positions for black e.g. nimzo if you play 2. ...e6. Alternatively, you could go 2...g6 for a sharp KID or a counterattacking Grunfeld. Nf6 is just so flexible, I would recommend that.

Nf6 is flexible but more complicated, needs more preparation and knowledge.
For a 1600, no doubt for me, continue to play Queen's gambit.
Its simpler and instructive.
Kasparov told that to become a champion, u have to master 2 openings (or something meaning the same) : ruy lopez and queen's gambit.

According to statistics in my 2.100.000 games database, the lowest score for whites comes after 1...g6 (53,4%) and the second lowest after 1...d6 (53,5%), with 19.645 games with 1...g6 and 23.102 games with 1...d6.
Those two moves are elastic, and uncertain...
Myself I use to move 1...d5 (57% and 201.240 games) and later I try f5 for the Dutch, Stonewall Variation.
1. d4 Nf6 - Controls e4, it also prevents the Black D Gambit.
2. d4 f5 - Draughty king. Don't be suprised if white sacks a pawn on the g-file to get at you.
3. d4 e6 - Are you hoping for a French? They play 2) c4 then what?
4. d4 d6 - They follow it up with 2) e4, it gets awkward.
5. d4 g6 - Don't show your cards so soon.
I have had 1. d4 played a lot of times against me when I am black and I am trying to think of which response might be best. I usually respond with d5 but I am thinking if there are any more 'tactical', or better responses. I have looked at a few responses and have come up with the following:
1. d4 Nf6
2. d4 f5
3. d4 e6
4. d4 d6
5. d4 g6
I am unsure which of these I could use against 1. d4. It would be helpful if I just got a few opinions on these responses. Thanks!
britishquaker