Originally posted by Data FlyThank you.
Black seems to have a pretty simple win after Qg3.
e.g.
[pgn][FEN "7K/7R/5k2/8/8/6q1/8/8 w - - 0 1"]
[SetUp "1"]
{--------------
. . . . . . . K
. . . . . . . R
. . . . . k . .
. . . . . . . .
. . . . . . . .
. . . . . . q .
. . . . . . . .
. . . . . . . .
white to play
--------------}
1. Rb7 Qh3+ 2. Kg8 Qc8+
[/pgn]
I'm fed up waiting for a new puzzle in this thread, so here's a really tricky one.
Identify the pieces in this diagram:
http://i19.photobucket.com/albums/b177/gallicrow/chess/identify_the_pieces.jpg
The capital letters are white pieces, the lower case letters are black pieces.
This was created by Étienne Dupuis in 2001 and it was published in Phénix 95.
Originally posted by Data FlyI am assuming lowercase = black. (common in this type of problem)
I'm fed up waiting for a new puzzle in this thread, so here's a really tricky one.
Identify the pieces in this diagram:
http://i19.photobucket.com/albums/b177/gallicrow/chess/identify_the_pieces.jpg
The capital letters are white pieces, the lower case letters are black pieces.
This was created by Étienne Dupuis in 2001 and it was published in Phénix 95.
D = King (exactly 2 of them, and they are not adjacent).
An A, B, and F are all on a diagonal with wK. Only one of them can be a diagonally moving piece.
B = not P (last rank), not B/Q (both D's in check). Remaining possibilities: N/R
A = not P (last rank)
C = not R/Q (impossible check on d) B? (needs a dis. check given by Rg2 (F = R); by elimination, E=P, A=Q *bzzt* impossible check to Df3 by Qa8 and Bh5) So, not B. Remaining possibilities: P/N
F = not B/Q (both D's in check). Remaining possibilities: P/N/R
Bishop = A or E.
Queen = A or E.
Kf3 is in check from Aa8.
There are three possibilities for the remaining pieces.
1. F = R forces B = N and C = P.
2. F = P forces C = N and B = R.
3. F = N forces C = P and B = R.
Analyzing them each in turn, and from experience placing the Q on the back rank (because B's tend to get stuck in impossible positions there):
In case all that backwards stuff got you dizzy, here is a forward viewer.
A = Q
B = R
C = P
D = K
E = B
F = R
- Joined
- 08 Apr 09
- Moves
- 20250
Originally posted by SwissGambitOr maybe the forum could cooperate on this one.
Show the solution?
Spoiler alert!
Some ideas:
- White's pawns are on the back rank: they haven't moved
- All white's pieces are captured: Knights, rooks and queen could have moved, but bishops are captured on their home squares
- The f1 bishop and h1 rook can only be captured if the king has left the back rank via the a-file. Unless they were captured by one of black's knights!
- One white pawn is missing: was it captured or promoted-and-then-captured?
- Two black pawns are missing: were they captured or promoted? The h-pawn was captured, but the a-pawn could have promoted.
Counting the obvious(?) Black moves which have been played "at some stage":
1-2 Ra8-a6-h6
3 Bc8-d7
4-5 Bf8-c5-d4
6 d7-d5
7 e7-e6
8-13 Qd8-a8xa2xa1xb1xc1xd1 (not sure about this)
14-18 a7-a5-a4-a3-a2-a1=q (or this!)
Leaving three moves for a black knight to hop over to capture a bishop on f1 and a rook on h1 and then return home...
Maybe we can save one of the six queen moves by moving white's b1 knight and allow it to be captured elsewhere.
W can't castle because of the stuck bishops
A Black Queen (could be more than one if promotion of a-file pawn) has to go into the back rank more than once to nibble out the pieces.
It has to take the Bishop on C1, then...
If it retreats, then the White Queen and King have to exit so that a Black Queen can go in and take at least the Bishop and Rook on F1 H1
If the black queen is taken (either on C1 or D1) there are then 5 black pawn moves to make another Black Queen
Does any of this help - who has some other suggestions?