# Another "add pieces and mate in 1"

SwissGambit
Posers and Puzzles 28 Jan '09 23:45
1. SwissGambit
Caninus Interruptus
28 Jan '09 23:45

Add white pieces, then mate in 1.
2. 29 Jan '09 11:53
Originally posted by SwissGambit
[fen]8/pPpppp2/1p6/5P2/2NP4/8/b1K1kPP1/q3BR2 w[/fen]
Add white pieces, then mate in 1.
I suppose I may not add one (only one) Black piece? ðŸ™‚
3. 29 Jan '09 11:57
Is it mate in one for White or for Black?
4. SwissGambit
Caninus Interruptus
29 Jan '09 17:42
Originally posted by heinzkat
Is it mate in one for White or for Black?
white
5. SwissGambit
Caninus Interruptus
29 Jan '09 17:43
Originally posted by heinzkat
I suppose I may not add one (only one) Black piece? ðŸ™‚
Would that really help?
6. 29 Jan '09 18:51
Originally posted by SwissGambit
[fen]8/pPpppp2/1p6/5P2/2NP4/8/b1K1kPP1/q3BR2 w[/fen]
Add white pieces, then mate in 1.
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Black has no last move, and will not have one even after the addition of the white pieces. So we must add pieces in such a way that after every 1st black move white will have mate in 1. At least I think soðŸ™‚
7. 29 Jan '09 19:20
Originally posted by SwissGambit
Would that really help?
Yes - if you add a bNh8, Black has a last move to retract in Ng6-h8. Now it appears Black has no move but:

Add wBe4 - Black's last move was ...b2xa1=Q - the pawn has captured its way from g7 to a1, 6 pieces, so White has room only for ten units. Seeing there are only 9 White units now, White is allowed to add one unit. So +wBe4 and 1. Bd3#
8. SwissGambit
Caninus Interruptus
30 Jan '09 06:443 edits
Originally posted by heinzkat
Yes - if you add a bNh8, Black has a last move to retract in Ng6-h8. Now it appears Black has no move but:

Add wBe4 - Black's last move was ...b2xa1=Q - the pawn has captured its way from g7 to a1, 6 pieces, so White has room only for ten units. Seeing there are only 9 White units now, White is allowed to add one unit. So +wBe4 and 1. Bd3#
SOLV'D [allowing bNh8 spoils the problem]
9. SwissGambit
Caninus Interruptus
30 Jan '09 18:43
Originally posted by SwissGambit
SOLV'D [allowing bNh8 spoils the problem]
Exercise for the class:
Why doesn't +wNh1 and 1.Ng3# work? Or +wQh3 and 1.Qd3#?
10. 30 Jan '09 23:35
Originally posted by SwissGambit
Exercise for the class:
Why doesn't +wNh1 and 1.Ng3# work? Or +wQh3 and 1.Qd3#?
Master, master, these pieces must have been captured on the pawn's way from g7 to a1.
11. SwissGambit
Caninus Interruptus
01 Feb '09 00:27
Originally posted by heinzkat
Master, master, these pieces must have been captured on the pawn's way from g7 to a1.
Specifically, they are all captured on dark squares, so the only piece that can remain is the one that can never travel on a dark square.
12. 05 Feb '09 00:28
queen on d3
13. SwissGambit
Caninus Interruptus
05 Feb '09 03:43
Originally posted by worrell
queen on d3
Nope.
14. 05 Feb '09 16:16
Originally posted by SwissGambit
Nope.
But that is mate!ðŸ˜ž
15. SwissGambit
Caninus Interruptus
05 Feb '09 17:18
Originally posted by heinzkat
But that is mate!ðŸ˜ž
*resets for the next kid who comes in late to class*