easy
Can you force instant resignation?
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Very Nice, Thanx.
Nice. It's so cool when queen sacs actually work out. Usually when I do it, I fail miserably and lose the game.
Those rooks sure do love that 7th rank! 
nice, by the way though, I wouldn't class that as a sacrifice of the queen. It's hardly a sacrifice when if the opponent accepts your offer you have forced mate in two or three. I would just see that as a combination.
yep it was clearly a win-win sitaution for white,black should have considered g4 to sacrifice queens and try to push some kind of a drawn later in the game
Nice puzzle, thanks for sharing it with us.
swestland wrote:
nice, by the way though, I wouldn't class that as a sacrifice of the queen. It's hardly a sacrifice when if the opponent accepts your offer you have forced mate in two or three. I would just see that as a combination.
You do realize that White still has a forced mate if Black declines, right? [See Torkii's post]
While I can see why you wouldn't call that a sacrifice, it still is considered one. At least imo, it's "only" a combination if White gets the material back, and it's a sacrifice if White gets a forced mate or "immaterial" compensation.
Thank you everyone for your comments, especially dmeng!
Yes, it's definitely a sacrifice. I think the difference swestland means is the one between this sac which directly ends the game and the more intuitive or positional one, where you get some compensation like a heavy attack for instance, but the game still goes on. Still both types are genuine sacrifices.
About declining the sac with 1...Rf7 (or 1...Qg2+ and 2...Rf7): I think White's quickest win in this case is (1...Rf7) 2.Rxf7 gxh5 3.Rc8 f4 4.Ra8+ Qc8 5.Rac8# Of course, instead of the Qc8 maneuvre, Black can give some pointless check instead, the number of moves remains the same...
nice one...thanks.
a worthy sacrifice
good puzzle ,thanks
nice
that was 222 easy! nice puzzle
Really nice one Torkil.....one might see this sacrifice in a long game...but to see it in a blitz, now that is impressive...keep up the good work
Gotta love the queen sac. I saw it instantly, but the question is whether or not I could set it up in an actual game. Well played.
dmeng wrote:
swestland wrote:
nice, by the way though, I wouldn't class that as a sacrifice of the queen. It's hardly a sacrifice when if the opponent accepts your offer you have forced mate in two or three. I would just see that as a combination.
You do realize that White still has a forced mate if Black declines, right? [See Torkii's post]
While I can see why you wouldn't call that a sacrifice, it still is considered one. At least imo, it's "only" a combination if White gets the material back, and it's a sacrifice if White gets a forced mate or "immaterial" compensation.
That there is a mate even if black declines the offer of the queen strengthens my argument that it is not a sacrifice. I am using Silman's definitions by the way (from his 1993 edition of How to reassess your chess). Silman defines a sacrifice as:
"The voluntary exchange of material for the purpose of obtaining a more favourable advantage than the material investment. Unlike a combination, a sacrifice is not a cut and dried affair, and there is usually an element of uncertainty associated with it." (Silman, 1993)
There is no uncertainty here. If black accepts the "sacrifice" he is mated; even if he declines he is mated!!
It's still a great spot though - especially in a blitz game.
nice and easy
I admit that White will win this game with almost every move, but the given position contains a tacical blow which resulted in Black's immediate resignation. I am happy to have found it in a 3 min blitz game; which move was it?