Go back
What color is the h2 pawn?

What color is the h2 pawn?

Only Chess

BigDogg
Secret RHP coder

on the payroll

Joined
26 Nov 04
Moves
155080
Clock
08 Mar 19

Only one of the following 2 positions is legal. Which one is which, and why?



Ponderable
chemist

Linkenheim

Joined
22 Apr 05
Moves
669913
Clock
08 Mar 19
1 edit
Vote Up
Vote Down

@BigDoggProblem

The bishop is giving check to the King but can't have moved there in the last move, so it hato be a discovered check by the King move I fail to see what that has to do with the h-pawn 🙁.

Shallow Blue

Joined
18 Jan 07
Moves
12477
Clock
08 Mar 19
Vote Up
Vote Down

@ponderable said
@BigDoggProblem

[hidden]
The bishop is giving check to the King but can't have moved there in the last move, so it hato be a discovered check by the King move I fail to see what that has to do with the h-pawn 🙁.

[/hidden]
The king is in double check...

Thought 1:
Neither checking piece can have given the other a discovered check, not even if it were a promoted pawn.


Thought 2:
As shown, this position is impossible. I can't make it work by rotating the board, either.

Shallow Blue

Joined
18 Jan 07
Moves
12477
Clock
08 Mar 19
Vote Up
Vote Down

@shallow-blue said
The king is in double check...

Thought 1: [hidden]Neither checking piece can have given the other a discovered check, not even if it were a promoted pawn.[/hidden]

Thought 2: [hidden]As shown, this position is impossible. I can't make it work by rotating the board, either.[/hidden]
Thought 3:
Yes, I can. bxc6 e.p. They're the right way up. But that still doesn't give me the solution.

Ragwort
Senecio Jacobaea

Yorkshire

Joined
04 Jul 09
Moves
189452
Clock
08 Mar 19

@bigdoggproblem said
Only one of the following 2 positions is legal. Which one is which, and why?

[fen]8/4r3/1kP4b/8/8/5Kp1/7P/1R4Bn b - - 0 1[/fen]

[fen]8/4r3/1kP4b/8/8/5Kp1/7p/1R4Bn b - - 0 1[/fen]
I think the h2 pawn is Black because in the sequence:



The white bishop could not access g1 if both f and h pawns were white.

BigDogg
Secret RHP coder

on the payroll

Joined
26 Nov 04
Moves
155080
Clock
08 Mar 19
Vote Up
Vote Down

@ragwort said
I think the h2 pawn is Black because in the sequence:

[pgn]
[FEN "5b2/2p1r3/1k6/1P6/4p3/4K1p1/5P1p/1R4Bn b - - 0 1"]
1. ... Bh6 2. f4 exf3 3. Kxf3 c5 4. bxc6 [/pgn]

The white bishop could not access g1 if both f and h pawns were white.
SOLV'D

Cookies help us deliver our Services. By using our Services or clicking I agree, you agree to our use of cookies. Learn More.