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NIC-Key,
a system of classification for chess openings, variations and subvariations by NICBase, New In Chess. Instead of the abstract ECO codes like 'A' to 'E', the openings are given lettercombinations that follow directly from the descriptive opening names, like 'SI" for the Sicilian Defence and 'KI' for the King's Indian Defence. Variations and subvariations are given numbercombinations that enable it to give every sub(sub)variation a unique code. The NIC-Key has been used internationally since 1984 and according to the NIC-site, is still evolving [1] .

Main Keys

[2]
NIC
Opening
Moves
ECO
AL
Alekhine's Defence
1.e4 Nf6
B02–B05
BI
Benoni Defense
1.d4 Nf6 2.c4 c5 3.d5
A56–A79
CA
Catalan Opening
1.d4 Nf6 2.c4 e6 3.g3
E00–E09
CK
Caro-Kann Defence
1.e4 c6
B10–B19
EO
English Opening
1.c4
A10-A39
FR
French Defence
1.e4 e6
C00–C19
GI
Grunfeld-Indian
1.d4 Nf6 2.c4 g6 3.Nc3 d5
D70–D99
HD
Dutch Defence
1.d4 f5
A80–A99
IG
Italian Game
1.e4 e5 2.Nf3 Nc6 3.Bc4
C50–C59
Bishop's Opening
1.e4 e5 2.Bc4
C23–C24
KF
King's Fianchetto
1.e4 g6
B06
KG
King's Gambit
1.e4 e5 2.f4
C30–C39
KI
King's Indian
1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6
E70–E99
KP
King's Pawn Openings
1.e4 e5
C20–C22
NI
Nimzo-Indian
1.d4 Nf6 2.c4 e6 3.Nc3 Bb4
E20–E59
OI
Old Indian
1.d4 Nf6 2.c4 d6
A53–A55
PU
Pirc Defence
1.e4 d6
B07–B09
QG
Queen's Gambit Accepted
1.d4 d5 2.c4 dxc4
D20–D29
QI
Queen's Indian
1.d4 Nf6 2.c4 e6 3.Nf3 b6
E12–E19
QO
Queen's Gambit
1.d4 d5 2.c4 e6
D30–D69
QP
Queen's Pawn Openings
1.d4 Nf6
A45–A52
1.d4 d5
D00–D09
1.d4
A40–A44
RE
Reti Opening
1.Nf3 (d5 2.c4)
A09
RG
Russian Game-Petroff
1.e4 e5 2.Nf3 Nf6
C42–C43
RL
Ruy Lopez-Spanish
1.e4 e5 2.Nf3 Nc6 3.Bb5
C60–C99
SD
Scandinavian Defence
1.e4 d5
B01
SI
Sicilian Defence
1.e4 c5
B20–B99
SL
Slav Defence
1.d4 d5 2.c4 c6
D10–D19
Semi-Slav Defense
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6
D43–D49
SO
Scotch Opening
1.e4 e5 2.Nf3 Nc6 3.d4
C44–C45
TD
Tarrasch Defence
1.d4 d5 2.c4 e6 (3.Nc3 c5)
D32–D35
VG
Vienna Game
1.e4 e5 2.Nc3
C25–C29
VO
Various Openings
1.e4
B00

A00–A08

See also


External Links


References

  1. ^ New In Chess - Support | NICBase Online Help - What is the NIC-Key?
  2. ^ NIC-Schlüssel - Wikipedia.de (German)

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