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Puzzle 1749

The last move is completely irrelevant, it doesn't really matter where you put your queen you still solved the puzzle, could you please fix this for future people who try the puzzle because it is annoying when you work out a puzzle, get it right, but then don't get the points from it because you put your queen somewhere that wasn't quite as good as the "correct" place, even though by this point you are a whole queen ahead of the other player. It doesn't even get a good move but you could do better, moving the queen somewhere else fails the puzzle.
I'm curious. Where exactly did you place your queen? Besides not moving (thereby losing it), there are 11 squares to put it in: 4 would get it eaten for free, 3 might get it pinned by the rook (one move later), and 1 would get it exchanged for the knight. Of the 3 left (the only safe choices), the puzzle's preference can help promote the passed pawn to win a rook from the opponent in exchange. It also forces the opponent's king into a somewhat compromising position.

I suppose we don't get promptings for those two because they're merely "okay" moves at best, not "good moves".
Sometimes it isn't just about winning material. It's about not allowing your opponent to equalize or blundering afterward. Sometimes winning material only makes the position winning if you make a precise move after. Winning material is not always the goal of the tactic. You have to recognize what the goal of taking that material is. If the end goal is to remove a defender for a greater tactic (such as promotion, a forced mate, etc.) then the puzzle WILL go on even if you think you've "solved" it.

I've seen such puzzles where the last move is to position the attacker to a safe square. Why not? If you win a piece only to leave your attacker threatened and remove it from the game, it's not winning anymore, you're just up an exchange maybe. Might not be enough! These extra final moves in some of these puzzles is what makes the lichess training absolutely innovative, imho! So I disagree, don't "fix" these!
I put the queen on d6. The reason I posted this topic, is because having one a full queen I don't think that putting my queen in a slightly inferior position should mean I failed the puzzle. The computer still thinks Qd6 is clearly winning for black and I played my queen to d6 because I thought doing so would be more practical as to me it looked slightly out of play on e2. If you look at the puzzle I would be pretty confident in saying that winning a full queen was the purpose of the puzzle, and a much more significant advantage was gained through winning the queen than the slight positional advantage gained from putting the queen somewhere the computer thinks is slightly better. Also I think that most players would be able to win a chess game when they are a full queen up. I recognise that the "correct" move is better, but I don't think that not playing it should mean you "fail" the puzzle when you are still winning. Idk it's just my opinion.
The solution Qf2+ is the best and simplest continuation. It protects the passed pawn and pushes the king into the corner. Now after something like e2 White has nothing and after Qf1 Black is threatening to win another rook. The attack is quite clear from here, even if White checks with the rook, it's just delays the inevitable while giving Black an even better position, so the exchange is a better concession and it's quite easy to see how this is totally won.

Qd6 is obviously still a winning evaluation, but it is anywhere from 2 to 3 pawns lower in evaluation, which would constitute an inaccuracy. It's also nowhere near as clear what Black's plan is from here. Obviously, in terms of material, Black is up a queen with a passed pawn and should easily win. But White has counterplay now and that means it isn't entirely clear how Black is going to win. It's definitely going to be a lot longer and that means more chances for Black to make errors.

That being said, I think maybe something should be fine tuned into the puzzles to not give a failure on a puzzle provided you don't drop from above 10+ to below 10. It's rather silly to fail a puzzle by choosing one completely won line over another. But, Qf2+ is objectively a much better continuation than any of the other winning lines.

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