B20 - Sicilian Defence: Unusual / 2.a3

Variation: Sicilian Defence: Unusual / 2.a3

Initial Move: The starting point for the most popular and complex response to 1.e4. It creates immediate asymmetry and offers chances for a win for both sides. Learn this opening step by step

Drużynowe Mistrzostwa Polski - Ekstraliga 2026 - Druzynowe Mistrzostwa Polski - Ekstraliga 2026
2026.06.22
GM Leniart, Arkadiusz (2473)
GM Dehtiarov, Roman (2508)
Результат 1/2-1/2
Opening B20
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Green Diamond Invitational 2026 | Main Event - Green Diamond Invitational 2026
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GM Thorfinnsson, Bragi (2370)
FM Ulfarsson, Magnus Orn (2351)
Результат 0-1
Opening B20
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Majstrovstvá Slovenska 2026 | Open - Majstrovstva SR
2026.06.19
GM Druska, Juraj (2459)
IM Neugebauer, Martin (2469)
Результат 1/2-1/2
Opening B20
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3rd UzChess Cup 2026 | Challengers - Round 8: Deac, Bogdan-Daniel - Aditya Mittal
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GM Deac, Bogdan-Daniel (2644)
GM Aditya Mittal (2610)
Результат 1-0
Opening B20
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360 One Masters Chess Tournament | Masters - 360 ONE MASTERS CHESS TOURNAMENT 2026
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GM Savchenko, Boris (2466)
GM Iniyan, Pa (2591)
Результат 0-1
Opening B20
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GM Abergel, Thal (2402)
GM Hamdouchi, Hicham (2492)
Результат 1/2-1/2
Opening B20
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European Senior Chess Championship 2026 | 65+ - Round 5: Legky, Nikolay A - Lederman, Leon
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GM Legky, Nikolay A (2320)
IM Lederman, Leon (2153)
Результат 1-0
Opening B20
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IV Open Ciudad de Buenos Aires - Round 8: Larino Nieto, David - Valerga, Diego
2026.05.24
GM Larino Nieto, David (2428)
GM Valerga, Diego (2442)
Результат 1/2-1/2
Opening B20
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2026 Chess.com Open | Playoffs | Winners - 2026 Chesscom Open Playoffs
2026.04.21
GM Carlsen, Magnus (2823)
GM Duda, Jan-Krzysztof (2743)
Результат 1/2-1/2
Opening B20
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Italian Team Championship 2026 | Group A - Round 1: Korpa, Bence - Kazakouski, Valery
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GM Korpa, Bence (2513)
GM Kazakouski, Valery (2597)
Результат 0-1
Opening B20
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