<notyetagm: <Anastasia> has -nothing- to do with -how- you actually open the h-file to get at the enemy king.> I understand your POV, but I adopt the opposite view: the way you open h is the most important part of the pattern, because that's the key move you must see OTB to incorporate the pattern into your attack plan (and your opponent must overlook it, so the "harder" patterns are more likely to sneak under his radar).

I think we're here not just to solve a puzzle, or gawk at the solution, but to learn how to win games (and maybe even win with elegance :) Brilliant sacs are fun to watch, but they're the pay-off after a build-up -- I study the build-up (hence why my puzzle kibitzes often comment on the opening and middlegame). You classify the mates based on the final (static) position -- I prefer to classify them based on the (dynamic) sequence/plan/key move that achieves them. I find the latter view tends to be more useful as a predictor of future plans. (Which, incidentally, is pretty good at solving any similar puzzles :)

From another perspective, we give names to mate patterns just to chunk them into study elements, because we're very good at memorizing visual patterns, so it's the proper granularity for a newbie-teaching device. I think it's more useful to extract (generalize) out of these mate patterns the key factors and moves. To me, the fact that "my Greco" requires opponent's cooperation, whereas "my Anastasia" does not, is a big difference -- it means even in a position where I have no piece to offer as deflection-bait, there's still another pattern I can plan for. (To a newbie, the fact that Anastasia costs a Q-sac, while Greco costs "only a Knight", is also a big difference :)

Dear newton296, please use proper English. Some of us are not native speakers of instant message dialects. I guessed the above was supposed to mean <You forgot the Q can go to a1 or b2 and still defend g7! Re6 is not as easy a win as you represent it to be!>.

Whether or not this was the meaning of your posting, here's a more detailed computer-aided analysis of the best black responses after 41. Re6. I did not run a full depth-search, so some of them may be unnecessarily long. The win indeed is not as easy, but white gains convincing advantage very quickly and black would resign long before getting mated.

After 41. ... Qb2, forced mate in 13, close to what <realbrob> proposed: 41. Re6 Qb2 42. Nxg6+ Kg8 43. Qh4 Qxf2+ 44. Qxf2 Rxe6 45. Ne5 Rf8 46. Qd4 Rxf5 47. gxf5 Rh6+ 48. Kg3 Rf6 49. Qd8+ Rf8 50. Qg5+ Kh8 51. f6 Rxf6 52. Qxf6+ Kg8 53. Qf7+ Kh8 54. Qf8#

After 41 ... Qf7, forced mate in 17: 41. Re6 Qf7 42. Nxg6+ Kg8 43. Nge7+ Rxe7 44. Rxe7 Qxe7 45. Nxe7+ Kf7 46. Nf5 Rd3 47. Qxh7+ Ke6 48. Ng7+ Kd6 49. Qxd3+ Kc5 50. Nf5 b4 51. Qd6+ Kc4 52. Ne3+ Kc3 53. Qc5+ Kb2 54. Qc2+ Ka1 55. Nd5 a3 56. f3 b3 57. axb3 a2 58. Qc1#

Everything else loses much quicker. For example, in addition to the lines already shown by <al wazir> and <siu02jm>, the other responses that attempt to keep the queen on the a1-h8 diagonal also lose.

After 41. ... Qa1, forced mate in 7: 42. Nxg6+ Kg8 43. Ne5 Qh1+ 44. Kxh1 Rd1+ 45. Kh2 Rh1+ 46. Kxh1 Re7 47. Nxe7+ Kh8 48. Qf6#