|Chessical: A tough fighting game, using a Sicilian set up popular in the 1880's and 1890's. |
Mackenzie's <9. f4> was too impatient as it allows Tarrasch to gain the initiative with <9...Ng4!>. Instead, <9.f3> or <h3> transposing into B56 are better, and Mackenzie did play this way later against Louis Paulsen in Round 8 of this congress.
Mackenzie vs Paulsen, 1887
Tarrasch reciprocates the blunder with <112. cxb5?>. With the benefit of hindsight and computer assistance we can see that he did not have to take the Bishop on <b5>, for instance:
<12... dxe5!> 13. Bc5 cxb5 14. Qd5 Nh6 15. Rad1 Rc8 16. b4 Qc7 and he squeezes out of hips opponent's hold.
<21. Rab1> seems a more pressing concern than moving the King from the Queen's diagonal. Tarrasch's Rook's soom dominate proceedings, and after <24. Ng5?>
click for larger view
<24... Rxg2!> 25. Kxg2 Rg3+ Black wins
Instead the game veers back to dynamically equality before Tarrasch makes a simple blunder with <28. Bd4>.
He probably was pre-occupied by the possible perpetual check: <29. Nxh7> Bxg1 30. Nf6+ Kf8 31. Nh7+ Ke8 32. Nf6+ etc.