The six basic tactics

Here's eight of them!

The different types of tactic are:

jumps (discovery)
mates
forks
pins/skewers
nets &
ties (undermining and overloading)

Here's one of each:

[Event "2.1 Forks"]
[Site "Italy?, "]
[Date "1801.??.??"]
[Round "?"]
[White "Greco, G."]
[Black "NN"]
[Result "1-0"]
[ECO "C41"]
[Annotator "An ancient Queen fork"]
[PlyCount "11"]

1. e4 e5 2. Nf3 d6 3. h3 Nf6 4. c3 4... Nxe4 {
# After the Knight, the piece that is best for forks is the Queen} 5. Qa4+ c6
6. Qxe4 1-0

[Event "2.2 Pins"]
[Site "corr, "]
[Date "1986.??.??"]
[Round "?"]
[White "Nudling, H."]
[Black "Gagsch, H."]
[Result "1-0"]
[ECO "C40"]
[Annotator "Another terrible pin"]
[PlyCount "13"]

1. e4 e5 2. Nf3 f5 3. Nxe5 Qf6 4. d4 d6 5. Nc4 fxe4 6. Be2 6... Qg6 {
# Same idea, other side} 7. Bh5 1-0

[Event "2.3 Skewers"]
[Site "Porz (5), "]
[Date "1991.??.??"]
[Round "?"]
[White "Richter"]
[Black "Bigott, M."]
[Result "1-0"]
[ECO "C45"]
[Annotator "A modest skewer"]
[PlyCount "17"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nxd4 5. Qxd4 b6 6. Bc4 Bb7 7. O-O Qf6 8.
Be3 8... Qc6 {# White's skewer is a small move to win a small piece, but it's
enough to win the game} 9. Bd5 1-0

[Event "2.4 Nets "]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "W"]
[Black "B"]
[Result "0-1"]
[ECO "C60"]
[Annotator "The Noah's Ark Trap"]
[PlyCount "22"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. d4 b5 6. Bb3 exd4 7. Nxd4 Nxd4 8.
Qxd4 c5 9. Qd5 Be6 10. Qc6+ Bd7 11. Qd5 {
# A net of a Bishop... This happens a lot: remember it!} 11... c4 0-1

[Event "3.1 Jumps"]
[Site "Palo Alto, "]
[Date "1989.??.??"]
[Round "?"]
[White "Wall"]
[Black "Ortiz, V."]
[Result "1-0"]
[ECO "C42"]
[Annotator "Pick your spot"]
[PlyCount "11"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nxe4 4. Qe2 d5 5. d3 5... Ng5 {
# White can move the Knight anywhere, but which square is best?} 6. Nc6+ 1-0

[Event "3.3 Overloading"]
[Site "ProMoPro Open Prague CZE (4),"]
[Date "2004.??.??"]
[Round "?"]
[White "Cebis, P."]
[Black "Nemec, V."]
[Result "1-0"]
[ECO "C44"]
[Annotator "Overloaded"]
[PlyCount "19"]

1. e4 e5 2. d4 exd4 3. c3 dxc3 4. Nxc3 Nc6 5. Nf3 d6 6. Bb5 Bd7 7. O-O a6 8.
Bc4 b5 9. Bb3 9... Be7 {# Black's Bishop on d7 can block the attack on f7, but
it is already doing the job of defending c6} 10. Qd5 1-0

[Event "7 Checkmates"]
[Site "Australia ch girls (5), "]
[Date "1995.??.??"]
[Round "?"]
[White "O'Brien, G."]
[Black "LauerSmith, J."]
[Result "0-1"]
[ECO "C57"]
[Annotator "Queen and Knight "]
[PlyCount "12"]

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 Nxe4 5. Nxf7 Qf6 6. Nxh8 {
# White liked the look of Black's Rook, but not Black's reply} 6... Qxf2# {
This is like Scholar's Mate, but the job of the Bishop is done by the Black
Knight} 0-1

[Event "3.2 Undermining"]
[Site "Ruy Lopez"]
[Date "????.??.??"]
[Round "?"]
[White "W"]
[Black "B"]
[Result "1-0"]
[ECO "C65"]
[Annotator "Removing the guard"]
[PlyCount "11"]

1. e4 e5 2. Nf3 (2. d4 exd4 3. c3 d5 4. exd5 Qxd5 5. cxd4 Nc6 6. Nf3 Bg4 7. Be2
7... Bxf3 {Black undermines the defence of d4.} 8. Bxf3 Qxd4 9. Bxc6+ {
White undermines the defence of d4 - with check!}) 2... Nc6 3. Bb5 Nf6 4. d3
4... a6 {# White doesn't usually get to carry out this idea in the Ruy Lopez:}
5. Bxc6 dxc6 6. Nxe5 1-0

Chess Quotes

"When in doubt
— play chess."