The organizers thank a lot the participants, those who downloaded the data (>170) , and those who took time and find courage for sending the answers (9 participants, 12 solution submissions, including 7 solutions during the last days) !

	Sample 1 CaC4H4O6.4H2O	Sample 2 La18W10O57
P001	PDF, DOC, CIF FOX
P002		PDF, CIF SUPERFLIP
P003	PDF, DOC, CIF TOPAS	PDF, DOC, CIF SUPERFLIP
P004	PDF, CIF SHELX
P005	PDF, DOC, CIF FOX	PDF, DOC, CIF FOX
P006	PDF, DOC FOX	PDF, DOC FOX
P007	PDF, CIF EXPO
P008	PDF, DOC ESPOIR
P009	PDF, DOC PSSP

Three months for solving at least one of 2 structures by SDPD methodology would have been quite enough if SDPD was a routine job (a rainy week-end would have been sufficient).

Twelve final answers for samples 1 and 2 from 9 participants using 7 different structure solution programs (ESPOIR, EXPO, FOX, PSSP, SHELX, SUPERFLIP, TOPAS), either SDPD experts are too busy or SDPD is still not really routine (requiring more than a week-end, so that the participants may need to take too much on their job time). This will be the main 2008 SDPDRR-3 conclusion, though some experts (especially the software developers) appear to be able to find a solution in a few hours.

The SDPDRR-3 establishes the triumph of direct space molecules/polyhedra/atoms location methods (ESPOIR, EXPO, FOX, PSSP, TOPAS), or of the Direct Methods especially adapted to powder data (EXPO, also able to apply direct space methods) and of the new charge flipping approach (SUPERFLIP, used in 50% of the successful attempts to solve the inorganic structure, FOX being the winner for the remaining 50%), though the old classical "single crystal" approach may still work (Patterson with SHELX from extracted intensities). Owing to the number of data downloads, the return is close to 5%, not very much more than during the SDPDRR-1 in 1998 (the winners were using DASH or the Patterson method) and the SDPDRR-2 in 2002 (the winners were yet also FOX and TOPAS). Considering that close to 200 SDPDs are published now per year, it was clearly an utopy to expect that 1% of them could be solved in 3 months by people extremely busy at solving their own difficult  problems, requiring maybe one week of continuous hard work, if not more. It will not be possible to say if, among the 95% of downloaders who did not sent any solution, some tried other known computer programs like DASH, EAGER, ENDEAVOUR, GEST, OCTOPUS, ORGANA, POWDERSOLVE, SAFE, XLENS (...), but the fact is that nothing was received from participants possibly using them. Finally, it is remarkable that the inorganic compound was claimed to be impossible to solve by many participants.

A paper giving deepest and finest details is planned to be published.

A poster will be presented during the IUCr meeting XXI, Osaka.