# Helpmate in 2

• #1

Hi everybody, here is a special chess problem. It is a helpmate in 2 and also a special condition: Andernach chess.

Helpmate means that black plays first, and black and white cooperate to mate black.

Andernach chess means that if you capture a piece, the piece you captured with, will turn the other color. Like this: White plays 1.Rxc5=bR. So the rook on c5 turns black. But if he captures with a check, the color still remains the same.

Here is the puzzle: Helpmate in 2

• #2

White to move or black to move?

• #3

It's not helpmate in one?

1.Rxb4=bR Rxa6=wR#

• #4

It's black to move. It's in the description, but I forgot to set the diagram on black to move... Now it's fixed

• #5

Does checkmate count as check?

• #6

There is nothing in Andernach Chess that says the piece doesn't change color in the event of a check. Moves like Rc6xa6(=wR)?? are illegal self-checks.

Sol: 1.Rxc5(=wR) Rc4 2.Ka4 Ra3#

• #7

Congratulations BigDoggProblem

1.Rxc5=wR Rc4 2.Ka4 Ra3# is the correct answer!!

• #8

White's side, look at the coordinates .

or
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