What are some good tactics?

If you have a tactic that you will share, tell me here please!

mmmmmmmmmmmmmmmmmmmmmmmmmmmmmm no tatics sorry

Overload: when a piece has too many jobs to do, and can't fulfill all of its duties.

Decoying and diverting are almost always found together. Decoying lures a piece to a specific square where it will be ambushed, and diverting deflects a piece away from the protection of a specific square.

Both examples are from my OTB games.

Yo, nice tactics there Emu! I should really try to learn how to use those... cuz any info I don't know about chess, is valuable to me q=)

https://chesstempo.com/tactical-motifs.html

Discovery

Something like this. Sorry, too lazy to put in all the other pieces.

Skewer: an X-Ray attack that attacks one piece THROUGH another one.

clearance sacrifice and interference

Desperado, the Z couplet (sounds like something of particle physics, I don't know, intermediate vector bosons). Aha, Zugzwang and Zwischenzug are the key to the weak nuclear interaction, which is why they are in some quantum superposition of being found regularly in atomic chess and not so. I don't mean to interrupt you, but my half life really doesn't want to be perturbed.

Desperado: when a piece that's going to die anyway decides to sell its life dearly.

Actually, that last example I gave looks cooked (ie: multiple solutions). But it still has some pedagogical value. 

zwschizenzug 

i forgot how to spell it

Undermining, commonly known as removal of the defender, not ostensibly a 'good' tactic but nonetheless of importance. There also happens to be the classic windmill, something that was evident in Bobby Fischer's game of the century. It can additionally be noted that the zwischenzug is known as an intermezzo or intermediate move, corresponding with our wonderful intermediate vector bosons. Triangulation is a tactic involved heavily in Zugzwang, er... a cross-check is employed to inhibit your opponent from a perpetual and is essential in winning specific endgames. 

While we're on the subject of partially defensive tactics such as the cross-check, we have luft, which may lean to some extent towards the positional aspect, but is highly important in invincible openings such as the Bongcloud and general avoidance of back rank checkmates (establishing a flight square). Luft is defensive on the whole. 

Some offensive tactics yet to mentioned are the Alekhine's gun, a battery, under promotion, Greek gift sacrifice and the Plachutta. I feel the need to elucidate the last two tactics; essentially the Greek gift sacrifice involves White playing Bxh7+ or Black playing Bxh2+. Below is an invaluable article on it:

https://www.chess.com/article/view/the-greek-gift-sacrifice-lives-on

As for the Plachutta, it is named after Joseph Plachutta and involves sacrificing a piece to deflect them from crucial defending squares. An example can be seen below:

The crux of the Plachutta example above was playing d5, severing the queen or bishop of from the key square it defends. One of the pieces is obliged to capture, well not necessarily, as they can't really play any move to delay the checkmate.

"X-Ray" Attack (or in my case, defence)

(Not before some dramatic moments where I was telling myself "if I cannot find a good move in another few seconds, I would resign the position"; in hindsight 24. Qxe7 was a bad decision for a human player).

Most important of them all: Sacrifice (at an appropriate time of course)

Example of zwischenzug. I was playing as White and in this situation I was supposed to be on the receiving end of this tactic (but my opponent missed it). To my opponent's credit, he had only 32 seconds in the position with no time increment.

I had previously played 1. Qxd6 capturing a Black knight.

Why is the puzzle in a "White to move" setting?

I presume you meant Black to move after White encloses the d5 square with 1. d5.

Never mind, I concluded too early.