MICOS Sub Groups Overview Table

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Main & Sub GroupsChess NotationOpenings in MICOS CAP

Flank Openings
Irregular Openings (A00.IO)
1. Anderssen’s Opening1.a3 A00.001.IO
2. Ware Opening1.a4 A00.007.IO
3. Polish Opening1.b4A00.016.IO
4. Saragossa Opening1.c3A00.049.IO
5. Mieses Opening1.d3A00.053.IO
6. Van't Kruijs Opening1.e3A00.059.IO
7. Barnes Opening1.f3A00.067.IO
8. Hungarian Opening1.g3A00.073.IO
9. Grob Opening1.g4 A00.095.IO
10. Clemenz Opening1.h3 A00.118.IO
11. Kadas Opening1.h4A00.121.IO
12. Sodium Attack1.Na3A00.131.IO
13. Van Geet Opening1.Nc3A00.135.IO
14. Amar Opening1.Nh3A00.175.IO
English Opening (A02.EN)
15. Symmetrical Defence1.c4 c5A02.004.EN
16. Anglo-Slav Defence (Minor Sub Group)1.c4 d5A02.041.EN
17. King's English1.c4 e5A02.046.EN
18. Agincourt Defence1.c4 e6A02.103.EN
19. Anglo-Dutch Defence1.c4 e6A02.128.EN
20. Anglo-Indian Defence1.c4 Nf6A02.142.EN
Bird's Opening (A03.BI)
21. Dutch Defence1.f4 d5A03.003.BI
22. From's Gambit1.f4 e5A03.016.BI
Reti Opening (A04.RE)
23. Anglo-Slav Defence1.Nf3 d5 2.c4 c6 3.b3 A04.023.RE
24. King's Indian Attack1.Nf3 d5 2.g3A04.042.RE

King's Defences
Irregular King's Defences (B00.IK)
25. St. George Defence1.e4 a6B00.004.IK
26. Owen's Defence1.e4 b6B00.010.IK
Sicilian Defence (B01.SI)
27. Wing Gambit1.e4 c5 2.b4B01.008.SI
28. Alapin Attack1.e4 c5 2.c3B01.018.SI
29. Smith-Morra Gambit1.e4 c5 2.d4B01.033.SI
30. Closed Sicilian1.e4 c5 2.Nc3 e6B01.077.SI
31. Closed Fianchetto1.e4 c5 2.Nc3 Nc6 3.g3B01.084.SI
32. O'Kelly Defence1.e4 c5 2.Nf3 a6B01.099.SI
33. Canal Attack1.e4 c5 2.Nf3 d6 3.Bb5+B01.124.SI
34. Najdorf Defence1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6B01.145.SI
35. Scheveningen Defence1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6B01.174.SI
36. Sicilian Dragon1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 B01.201.SI
37. Classical Attack1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 B01.243.SI
38. Richter-Rauzer Attack1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5B01.248.SI
39. Caro-Kann Defence1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6B01.287.SI
40. Paulsen Defence1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6B01.302.SI
41. Hyperaccelerated Pterodactyl Defence1.e4 c5 2.Nf3 g6 3.d4 Bg7B01.331.SI
42. Nyezhmetdinov-Rossolimo Attack1.e4 c5 2.Nf3 Nc6 3.Bb5B01.343.SI
43. Open Sicilian1.e4 c5 2.Nf3 Nc6 3.d4 B01.351.SI
44. Nimzowitsch Defence1.e4 c5 2.Nf3 Nf6 B01.383.SI
Caro-Kann Defence (B02.CK)
45. Accelerated Panov Attack 1.e4 c6 2.c4B02.008.CK
46. Advance Attack1.e4 c6 2.d4 d5 3.e5B02.022.CK
47. Panov Attack1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4B02.035.CK
48. Classical Defence1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5B02.058.CK
49. Karpov Defence1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7B02.068.CK
50. Two Knights Attack1.e4 c6 2.Nc3 d5 3.Nf3B02.097.CK
Scandinavian Defence (B03.SC)
51. Portuguese Gambit1.e4 d5 2.exd5 Nf6 3.d4 Bg4B03.012.SC
52. Anderssen Counter-Attack1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5B03.033.SC
53. Mieses Defence1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 Nf6B03.037.SC
Pirc Defence (B04.PI)
54. Austrian Attack1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 B04.019.PI
55. Classical Quiet System1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 B04.028.PI
French Defence (B05.FR)
56. St. George Defence (Minor Sub Group)1.e4 e6 2.d4 a6 B05.013.FR
57. Advance Opening1.e4 e6 2.d4 d5 3.e5 B05.025.FR
58. Exchange Attack1.e4 e6 2.d4 d5 3.exd5 B05.045.FR
59. Steinitz Defence (Minor Sub Group)1.e4 e6 2.d4 d5 3.Nc3 a6 4.Nf3 Nf6 5.e5 Nfd7 B05.052.FR
60. Winawer Defence1.e4 e6 2.d4 d5 3.Nc3 Bb4 B05.056.FR
61. Rubinstein Defence1.e4 e6 2.d4 d5 3.Nc3 dxe4B05.095.FR
62. MacCutcheon Defence1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4B05.108.FR
63. Classical Defence1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7B05.121.FR
64. Tarrasch Attack1.e4 e6 2.d4 d5 3.Nd2B05.151.FR
Robatsch Defence (B06.RO)
65. Central Benoni1.e4 g6 2.d4 Bg7 3.c4 c5B06.008.RO
66. Semi-Averbakh Defence1.e4 g6 2.d4 Bg7 3.c4 c5 4.Nf3B06.012.RO
Pterodactyl Defence (B07.PT)
67. Sicilian Defence (Minor Sub Group)1.e4 g6 2.d4 Bg7 3.Nc3 c5 4.Nf3 Qa5B07.010.PT
Nimzowitsch Defence (B08.ND)
68. Scandinavian Advance Attack1.e4 Nc6 2.d4 d5 3.e5B08.009.ND
69. Kennedy Defence1.e4 Nc6 2.d4 e5B08.022.ND
70. El Columpio Defence (Minor Sub Group)1.e4 Nc6 2.Nf3 Nf6 3.e5 Ng4B08.043.ND
Alekhine Defence (B09.AL)
71. Hunt Attack1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.c5 Nd5B09.012.AL
72. Four Pawns Attack1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4B09.027.AL
73. Modern Defence1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3B09.036.AL

Open Games
Bishop's Opening (C01.BS)
74. McDonnell Gambit (Minor Sub Group)1.e4 e5 2.Bc4 Bc5 3.b4 C01.005.BS
75. Berlin Defence1.e4 e5 2.Bc4 Nf6 C01.025.BS
Center Game (C02.CG)
76. Danish Gambit1.e4 e5 2.d4 exd4 3.c3C02.004.CG
King's Gambit Declined (C03.KD)
77. Classical Defence1.e4 e5 2.f4 Bc5C03.002.KD
78. Falkbeer Counter-Gambit1.e4 e5 2.f4 d5 C03.015.KD
79. Panteldakis Counter-Gambit1.e4 e5 2.f4 f5 C03.038.KD
King's Gambit Accepted (C04.KA)
80. Bishop's Gambit1.e4 e5 2.f4 exf4 3.Bc4C04.004.KA
81. Cunningham Defence1.e4 e5 2.f4 exf4 3.Nf3 Be7C04.046.KA
82. Muzio Gambit1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.0-0C04.068.KA
83. Kieseritzky Gambit1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 C04.101.KA
84. Allgaier Gambit1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5C04.125.KA
Vienna Game (C05.VI)
85. Vienna Gambit with 2…Nc61.e4 e5 2.Nc3 Nc6 3.f4C05.012.VI
86. Vienna Gambit with 2…Nf61.e4 e5 2.Nc3 Nf6 3.f4C05.048.VI
King's Knight Opening (C06.KN)
87. Elephant Gambit1.e4 e5 2.Nf3 d5C06.006.KN
88. Latvian Gambit1.e4 e5 2.Nf3 f5C06.010.KN
89. Taylor Opening1.e4 e5 2.Nf3 Nc6 3.Be2C06.043.KN
Philidor Defence (C07.PH)
90. Philidor Counter-Gambit1.e4 e5 2.Nf3 d6 3.d4 f5C07.019.PH
91. Hanham Defence1.e4 e5 2.Nf3 d6 3.d4 Nd7C07.023.PH
92. Nimzowitsch Defence1.e4 e5 2.Nf3 d6 3.d4 Nf6C07.035.PH
Ruy Lopez Opening (C08.RL)
93. Morphy's Defence1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 C08.003.RL
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 ...5.d5, ...5.d6, ...5.g6C08.108.RL
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 with various move 5.C08.148.RL
94. Closed Defence1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7C08.036.RL
95. Open Ruy Lopez1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Nxe4C08.114.RL
96. Exchange Attack1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6C08.158.RL
97. Classical Defence1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5C08.172.RL
98. Schliemann Defence1.e4 e5 2.Nf3 Nc6 3.Bb5 f5C08.191.RL
99. Berlin Defence1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6C08.210.RL
Giuoco Piano Game (C10.GI)
100. Giuoco Pianissimo Attack: 5.d31.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3C10.012.GI
101. Greco Gambit1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4C10.025.GI
102. Giuoco Pianissimo Attack: 4.d31.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3C10.047.GI
Two Knights Game (C12.TW)
103. Scotch Gambit1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.0-0C12.011.TW
Scotch Game (C14.SG)
104. Scotch Gambit1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 C14.004.SG
105. Goering Gambit1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 C14.018.SG
Four Knights Game (C16.FO)
106. Spanish Symmetrical Defence1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 Bb4 5.0-0 0-0 6.d3 d6C16.013.FO
107. Scotch Attack1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4C16.036.FO
Russian Game (C17.RU)
108. Modern Attack1.e4 e5 2.Nf3 Nf6 3.d4C17.005.RU
109. Petrov's Defence1.e4 e5 2.Nf3 Nf6 3.Nxe5C17.017.RU
110. Classical Attack1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4C17.026.RU

Closed Games
Queen's Pawn Game (D00.QP)
111. Richter-Veresov Attack1.d4 d5 2.Nc3 D00.016.QP
112. Torre Attack1.d4 d5 2.Nf3 Nf6 3.Bg5 D00.052.QP
113. Colle System1.d4 d5 2.Nf3 Nf6 3.e3 D00.058.QP
Queen's Gambit Declined (D01.QD)
114. Baltic Defence1.d4 d5 2.c4 Bf5 D01.003.QP
115. Austrian Defence1.d4 d5 2.c4 c5 D01.010.QD
116. Albin Counter-Gambit1.d4 d5 2.c4 e5 D01.014.QD
117. Orthodox Defence1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 0-0D01.055.QD
118. Modern Knight Defence1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7D01.107.QD
119. Exchange Attack1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5D01.124.QD
120. Harrwitz Attack1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Be7 5.Bf4 D01.134.QD
121. Semi-Tarrasch Defence1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5D01.142.QD
122. Chigorin Defence1.d4 d5 2.c4 Nc6D01.167.QD
Queen's Gambit Accepted (D02.QA)
123. Alekhine Defence1.d4 d5 2.c4 dxc4 3.Nf3 a6 D02.018.QA
124. Classical Defence1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 D02.032.QA
Slav Defence (D03.SL)
125. Czech Defence1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 D03.037.SL
Blackmar-Diemer Gambit (D04.BL)
126. Lemberger Counter-Gambit (Minor Sub Group)1.d4 d5 2.e4 dxe4 3.Nc3 e5 D04.013.BL
127. Teichmann Defence1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 Bg4 D04.043.BL
128. Bogoljubow Defence1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 exf3 5.Nxf3 g6 D04.051.BL
Tarrasch Defence (D05.TA)
129. Classical Defence1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.0-0 0-0 D05.014.TA
Semi-Slav Defence (D06.SE)
130. Botvinnik System1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4D06.003.SE
131. Meran Defence1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5D06.020.SE

Queen's Defences
Irregular Queen's Defences (E00.IQ)
132. Mikenas Defence1.d4 Nc6 E00.021.IQ
Dutch Defence (E03.DU)
133. Classical Defence1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 E03.013.DU
134. Staunton Gambit1.d4 f5 2.e4 E03.041.DU
135. Manhattan Gambit1.d4 f5 2.Qd3 E03.071.DU
Indian Game (E05.IN)
136. Trompowsky Attack1.d4 Nf6 2.Bg5E05.003.IN
137. Blumenfeld Counter-Gambit1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 E05.024.IN
138. Bronstein Gambit1.d4 Nf6 2.g4 E05.046.IN
139. Torre Attack: Classical Defence1.d4 Nf6 2.Nf3 e6 3.Bg5 E05.070.IN
Modern Benoni (E08.MB)
140. Classical Attack1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 E08.009.MB
141. Fianchetto1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 E08.024.MB
Old Indian Defence (E09.OI)
142. Janowski Defence1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 E09.003.OI
Budapest Defence (E10.BU)
143. Alekhine Attack1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 E10.008.BU
Catalan Opening (E11.CA)
144. Closed Defence1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 E11.008.CA
145. Open Catalan1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 E11.028.CA
Nimzo-Indian Defence (E12.NI)
146. Samisch Attack1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3E12.002.NI
147. Normal Defence1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3E12.017.NI
148. Normal Defence: 5.Nf3 System1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 0-0 5.Nf3E12.027.NI
149. St. Petersburg Defence1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6E12.045.NI
150. Huebner Defence1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5E12.057.NI
151. Spielmann Attack1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3E12.082.NI
152. Classical Attack1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2E12.088.NI
Queen's Indian Defence (E14.QI)
153. Fianchetto1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3E14.010.QI
154. Kasparov Attack1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3E14.038.QI
King's Indian Defence (E15.KI)
155. Averbakh Attack1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 0-0 6.Bg5E15.025.KI
156. Samisch Attack1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3E15.037.KI
157. Four Pawns Attack1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4E15.057.KI
158. Orthodox Opening1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 0-0 6.Be2 e5 7.0-0E15.072.KI
159. Semi-Classical Attack1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 0-0 5.e3 d6 6.Be2E15.102.KI
160. Fianchetto1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.g3 E15.109.KI
Grunfeld Defence (E16.GR)
161. Neo Grunfeld Defence1.d4 Nf6 2.c4 g6 3.g3 d5 E16.001.GR
162. Brinckmann Attack1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 E16.015.GR
163. Exchange Defence1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 E16.023.GR
164. Modern Exchange Attack1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 E16.038.GR
165. Three Knights Attack1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3E16.058.GR
166. Russian Game1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 E16.069.GR
The 166 MICOS Sub Groups are one of the cornerstones of mastering chess openings, offering a structured approach to learning.

Sub Groups are included in MICOS and are defined by MICOS code ranges. They are not a separate system.

MICOS – MasterInChess Openings System – Overview

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