KEG: Having played the Max Lange attack while competing for my high school chess team decades ago, this game brought back fond memories as I watched Tchigorin dismantle Teichmann. The main issue in this game is exactly where Teichmann went wrong.
I respectfully disagree with parmetd's claim that 11...Bb6 was a mistake. While I too prefer 11...0-0-0, 11...bb6 is fine also, and indeed the Tournament Book calls it "best." This was certainly not the source of Teichmann's troubles.
The Tournament Book suggests that Teichmann's 16...e5 was bad and claims that 16...Kd7 was better. According to Fritz, and so far as I can see, both moves are more than adequate for Black to maintain the balance.
The crisis truly began with Tchigorin's 18. h4. Fritz says this loses, and indeed it does appear risky (as compared with what Fritz recommends [18. Re4]). In any case, and contrary to the commentary by Tartakower and Du Mont on this game, Teichmann's 19...Ke6 was bad. It was critical for Teichmann to get his King out of the line of fire and to bring his QR into the game ASAP. I suspect that a great defender and counterattacker like Korchnoi would have worked his way through this maze and prevailed on the Black side of this game. With this in mind, 19...Kg8 (the move ridiculed by Tartakower and Du Mont) is in fact best and--if Fritz is to be believed--leads to a won game for Black.
Even after allowing his King to be driven into the center of the board, Teichmann could have made a fight of it with 21...Rag8 instead of his awful 21...Rgg8. Though it seems silly not to move the g7 Rook to safety, fast development of the a8 Rook was essential here.
The most wonderful move of the game was Tchigorin's fabulous 23. b3 !!! What a subtle and beautiful way to continue the attack! After this brilliant pawn advance, Teichmann was dead. He might have held on a tad longer had he played 26...RxB instead of 26...hxB, but by this stage Tchigorin was not to be denied.
Even if Fritz' criticism of Tchigorin's 18. h4 is correct, this game serves as yet another reminder of the attacking genius of this great 19-century Russian champion.