FEN shows no en passant square. Game already terminated with last capture by black king or move of black pawn by one square..
If its's a valid problem you need to be able to prove en passant without reference to the FEN anyway.
Queen v Rook Position
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May 17, 2022
0
#63
Another draw. There is is bishop on board, but will disappear very soon, as r and b are pinned.
this wuzza draw ?...if black cant checkmate here then theyre dum.
May 18, 2022
0
#67
I was able to solve it. Starting with 1.Be1 it is a draw since if the queen takes the rook, 2.Bf2 pins the queen. If the bishop is taken, then it is stalemate.
May 18, 2022
0
#69
I think it is still a draw. I would force black to take my bishop on g3, and keep checking the black king with the rook. If black would not take on g3, then it is time to move the rook to safety and then with the rook and bishop vs queen, it is a draw.
1. Be1 Qe3
2. Bg3 Qg3
3. Rook keeps checking on a square free from queen capture.
1. Be1 Qe3
2. Bg3 Qg3
3. Rook keeps checking on a square free from queen capture.
May 18, 2022
0
#70
The position is drawn - I looked it up on Syzygy when I posted #66. I was just pointing out your solution was incomplete. (Still is in fact because the queen doesn't need to bite, e,g, 2...Qh6+.)
May 18, 2022
0
#71
Okay, thanks for looking it up. I do not have access to any tablebase.
Qf4 Kc8 should be met with Kc5. My issue against the engine is I get a position where my king and my oponents king is on a different central file.
Like for example his king on d8 and mine on e5.
I also often get to force is back so much that if I play the queen to the philidor position my king would like one more move to play kc6 for example. But if I play Kc6 immediately then the queen isn't on the right square
ChessEnthusiast48 wrote:
I was able to solve it. Starting with 1.Be1 it is a draw since if the queen takes the rook, 2.Bf2 pins the queen. If the bishop is taken, then it is stalemate.
yes. ur right. and Rat finally got one right for once. tho they needed a program to do it. they could never figure it out on their own. not indy enuf.
looks like a Rook+p fortress. but the bishop is a grown up pawn.
like this:
is basically this:
May 19, 2022
0
#76
Yes, thank you for pointing that out. It is a draw if the rook is protected by either a pawn or in this case a bishop. Because as long as the rook is there, the black king can’t assist the queen to deliver checkmate.
May 19, 2022
0
#77
interestingly, there are many QvRP positions that can be broken down into a win for the queen... i believe 'derek grimmell' on youtube has a few videos laying out the technique.
May 21, 2022
0
#78
There might be some queen vs rook and bishop situations that result in win for the side with the queen, but in the position above, it is a draw. White has to find 1. Be1, 2. Bg3, and 3. Rc7 to draw.
As noted above,
1. Be1 Qxc5
2. Bf2 draws
If 1. Be1 Qe3
2. Bg3 Qxg3 is a draw since white keeps checking the black king starting with Ra5+ and so on the a file
If 1. Be1 Qe3
2. Bg3 Qh6+
3. Kg2 draws
If 1.Be1 Qe3
2. Bg3 Ka6
3. Rc7 draws
As noted above,
1. Be1 Qxc5
2. Bf2 draws
If 1. Be1 Qe3
2. Bg3 Qxg3 is a draw since white keeps checking the black king starting with Ra5+ and so on the a file
If 1. Be1 Qe3
2. Bg3 Qh6+
3. Kg2 draws
If 1.Be1 Qe3
2. Bg3 Ka6
3. Rc7 draws
May 22, 2022
0
#79
According to Syzygy again (or Nalimov) - if White has the queen about
42% White wins in at most 70 moves (with the queen)
37% draws
21% Black wins in at most 21 moves (with rook and bishop)
All wins possible within the 50 move rule.
(As usual under FIDE competition rules the figures relate to positions with ply count 0.)
thinka en passant