Hello,
I thought it was better to move these reports out of the V3 topic since they aren't really directly client related. Let me know if you prefer otherwise.

Here is another game where the Playroom doesn't recognise a Checkmate:

1. Pe2-e4. Pd7-d5
2. Pe4xd5. Pe7-e5
3. Pd5xe6. Qd8-f6
4. Pe6xf7+. Ke8xf7
5. Pd2-d4. Nb8-c6
6. Bf1-c4+. Kf7-e8
7. Nb1-c3. Qf6xd4
8. Qd1-h5+. Ke8-d8
9. Bc1-g5+. Nc6-e7
10. Ra1-d1. Qd4-d6
11. Bc4xg8. Rh8xg8
12. Rd1xd6+. Pc7xd6
13. Qh5-f7. Kd8-c7
14. Nc3-d5+. Kc7-b8
15. Nd5xe7. Rg8-h8
16. Ne7-d5. Pa7-a6
17. Qf7-c7+. Kb8-a7
18. Bg5-e3+.

Thanks.

Hello,

It's better like this when it's reported outside of v3, because except when related to bots, it has in fact nothing to do with v3 directly (the problem would also occurr with v2).

I understand why it isn't recognized. It doesn't realise that the pawn in B7 can't be moved in B6 because it would then open a line for the queen in C7. I'll try to take this kind of situation into account for the next update. Thank you.

Hello,

I think I have solved it now.

Hello,
first of all, thanks for the fix, this position now works correctly.

However, I would like to report 2 more things.
First, there is now a position that is opposite, i.e it is incorrectly detected as a Checkmate even though it isn't.
Before I paste the position however, I want to warn that for some reason, this one isn't at all correctly imported in the shift plus H dialog.
When trying to import it, the move number 8 which is supposed to be white short castle for some reason gets converted into Nf3-e5, which is supposed to be later on, move number 10. In other words, moves number 8 and 9 get completely ignored in the import, thus messing up the position.

Anyway, the position is this:

1. Pe2-e4. Pd7-d5
2. Pe4xd5. Pe7-e6
3. Pd5xe6. Pf7xe6
4. Ng1-f3. Qd8-d5
5. Nb1-c3. Qd5-f5
6. Pd2-d4. Bf8-b4
7. Bf1-d3. Qf5-a5
8. O-O. Bb4xc3
9. Pb2xc3. Bc8-d7
10. Nf3-e5. Nb8-c6
11. Qd1-h5+. Pg7-g6
12. Bd3xg6+. Ph7xg6
13. Qh5xg6+. Ke8-d8
14. Qg6-g7. Nc6-e7
15. Bc1-g5. Rh8-h7
16. Qg7xg8+.

Here, if you get the position to import correctly or just play the game as indicated, even though the Playroom thinks it's a Checkmate, the black has a playable move, Bd7-e8.

When imported correctly, here is a FEN notation of the board:

r2k2Q1/pppbn2r/4p3/q3N1B1/3P4/2P5/P1P2PPP/R4RK b - - 0 15

Thanks.

Edit: Not sure why the moves history is now rendered as a table on the forum :)
seems like something new. Hope it's possible to follow, otherwise I can remove the tabs.

Hello,

It seems like we are now going to balance between false positives and false negatives. I'll try to fix this new one without breaking old ones.