Some Tactics

Hey guys,
I wanted to share some tactics which occurred in my local club.
Some were found and some were not.
If you want to solve them yourself, you should deactivate the automatic engine analysis in the lichess settings for the analysis board!
Hopefully you will enjoy them:

1) lichess.org/analysis/standard/2rr2k1/qp3ppp/p1n1p3/2NpP3/5P2/P2QPR2/1PR3PP/6K1_b_-_-_8_21

2) lichess.org/analysis/standard/2r2r2/pbq2pkp/1p1ppnp1/8/2nPP3/2N4P/PPBN1PP1/R1Q1R1K1_b_-_-_5_17

3) lichess.org/analysis/standard/3r2k1/p4p2/2p2n2/q5p1/2P1p3/P2rR1B1/1P3PP1/2Q1R1K1_w_-_-_2_29

4)
lichess.org/analysis/standard/2b5/4k1bp/p5p1/1p3p2/n7/2PN2N1/PP3PPP/3BK3_b_-_-_1_29

5) lichess.org/analysis/standard/6k1/2r2p1p/1qBpp1pb/1P1P4/4P3/r3PR1P/4Q1P1/4R1K1_w_-_-_1_24#46

Unfortunately I don't know how to attach the solution, so the computer will tell ;)
Write in the comments, how many you solved :)
Regards Aculian

1.) 1. Nxe5 fxe5 2. Rxc5

well done :)

2)Nxb2!

4)Nxb2

Good!