The Grob is objectively busted man. idk why this guy keeps bringing it up. Basman got away with playing it because he was a a creative genius who took it seriously and his opponents didnt and he was most active when engines werent guiding our opening theory so he became the authority in his own opening. In the current age where even a class player with a modicum of effort can dish out 15 moves of depth 50 cloud engine comp analysis, this kind of stuff can only exist in the realm of surprise value.
the litmus test of how viable an opening is, is how terrible your opening ends up agaisnt 20-25 moves of near perfect play. If the end position is halfway reasonable, you are a probably ok, but if you are begging for a limping draw where you are worse the whole game or are -2 in an otherwise messy position, its just busted and its bad.
If white opening gives you equality and a rich position, its fine, if a black opening equalizes by move 20 or so, its fine. Anything deviating from these and you get differing degrees of bad.
#42
We should look at grandmaster games to judge openings. At lower levels the opening does not matter at all as some blunder decides the game regardless of opening.
Chess is not about traps. Traps give free effortless wins against weaker players you should beat anyway, but backfire against stronger players against whom you need most help.
1 b4 is not worse than 1 b3. GM Miles conceived 1 e4 a6 2 d4 b5 as an improvement over 1 e4 b6. Grob 1 g4 d5 2 Bg2? is bad. 1 g4 d5 2 h3! is playable at master level, as IM Basman showed.
i dont think Miles went so far as to say its an improvement as he played a mean b6 himself and played it quite often, whereas the only memorable a6 game was the stunning Karpov victory . But the wasted tempi is partially compensated by the space advantage of the pawn on b5 by threatening the c4 square and b4-b5 push vs a c3 knight.