Hi,
Given:
[D]K7/8/k2n1n2/8/2q1P3/8/3N1N2/8 b - -[/D]
and:
pawn = 100
queen = 975
knight = 325
The left black queen is attacking the white pawn. What should be the SEE value?
First it is -975 for the attacking queen, then +100 for the pawn, -325 for the black knight, +325 for the white knight, -325 again and +325 again so I think it is -875. Am I right?
see
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Re: see
No, that's not it at all. It's -550. I can break it down if you can't figure it out. But don't start with the material value of the queen, because the pawn is the first thing to go.
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Re: see
Hi!flok wrote:Hi,
and:
pawn = 100
queen = 975
knight = 325
The left black queen is attacking the white pawn. What should be the SEE value?
First it is -975 for the attacking queen, then +100 for the pawn, -325 for the black knight, +325 for the white knight, -325 again and +325 again so I think it is -875. Am I right?
pawn - queen + WKnight - BKnight + WKnight
100 - 975 + 325 - 325 + 325 = 550
Re: see
tomitank wrote:100 - 975 + 325 - 325 + 325 = 550
Please do because I can't figure it out.AlvaroBegue wrote:No, that's not it at all. It's -550. I can break it down if you can't figure it out. But don't start with the material value of the queen, because the pawn is the first thing to go.
First of all: why an odd number of additions? there are 6 pieces?
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Re: see
The last attacker piece is a Black Knight.flok wrote:tomitank wrote:100 - 975 + 325 - 325 + 325 = 550Please do because I can't figure it out.AlvaroBegue wrote:No, that's not it at all. It's -550. I can break it down if you can't figure it out. But don't start with the material value of the queen, because the pawn is the first thing to go.
First of all: why an odd number of additions? there are 6 pieces?
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Re: see
But there are only 5 captures.flok wrote:tomitank wrote:100 - 975 + 325 - 325 + 325 = 550Please do because I can't figure it out.AlvaroBegue wrote:No, that's not it at all. It's -550. I can break it down if you can't figure it out. But don't start with the material value of the queen, because the pawn is the first thing to go.
First of all: why an odd number of additions? there are 6 pieces?
Let's imagine the sequence of moves if everyone captures everything till the end (although they don't have to: Either player could stop and take the "stand pat" score, like in quiescence search).
qxP, Nxq, nxN, Nxn, nxN
Let's write down the sequence of captured piece values, with sign:
+100, -975, +325, -325, +325
Now compute the partial sums (material balance at each step):
+100, -875, -550, -875, -550
Now start at the penultimate place in the list (the second -875) and think of whether the player to move would prefer the material balance at that time (the number we are looking at) or the result of the recapture (the next element in the list).
+100, -875, -550, >>-875<<, -550
In this case it was black's turn, and black would rather see -550 than -875, because in the convention of signs we are using in this post, higher means better for black. So we replace the -875 with -550 and we move back.
+100, -875, >>-550<<, -550, -550
White is indifferent as to whether to pick the -550 from not standing pat or the -550 from recapturing.
+100, >>-875<<, -550, -550, -550
It's black's turn, so black would rather take the -550 from recapturing.
>>+100<<, -550, -550, -550, -550
It's white's turn, so -550 is better than +100.
-550, -550, -550, -550, -550
The result of SEE is the first number, so -550.
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Re: see
I haven't understood if you correctly understood the see.
The see is relative to a move.
In this position queen capturing the pawn has a see of -550.
Left Knight capturing pawn has a see of 100
Right knight capturing pawn had a see of 100.
I have calculated the see by mind.. and they can be wrong. But the important thing is that a move has a see.
A see without the first move doesn't exist
The see is relative to a move.
In this position queen capturing the pawn has a see of -550.
Left Knight capturing pawn has a see of 100
Right knight capturing pawn had a see of 100.
I have calculated the see by mind.. and they can be wrong. But the important thing is that a move has a see.
A see without the first move doesn't exist
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Re: see
Well, he said this: "The left black queen is attacking the white pawn. What should be the SEE value?"elcabesa wrote:I haven't understood if you correctly understood the see.
The see is relative to a move.
In this position queen capturing the pawn has a see of -550.
Left Knight capturing pawn has a see of 100
Right knight capturing pawn had a see of 100.
I have calculated the see by mind.. and they can be wrong. But the important thing is that a move has a see.
A see without the first move doesn't exist
I assume in this whole thread we have been talking about the SEE value of the black queen capturing the white pawn.