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Author Topic: Time travelling pieces
Alex Levit
Visitor
Posts: 4
 Time travelling pieceson: October 23, 2012, 23:27

Time travel is popular subject in sci-fi and movie . Why don't we try it in fairy chess?
Time travelling pieces moves like a normal pieces but after making a move they can travel in time to any moment between start and end of solution. No time paradoxes are allowed!
Another good name for such pieces is terminator (this is my wife's idea) like a hero of well known films.
Simple example:

H#2 2 solutions
Terminator-pawn c7

It's look like black is stalemated but
1.Ng5[+wTBh3]! Terminator-Bh3 is promoted pawn c7 from the future.
1...c8=TB
2.Nxh3 TBxh3[-wTBh3]# Now Bh3 goes to the past and black checkmated. White can't play for example 2...Rxh3#?? because this is time paradox. And second solution:
1.Rg3[+wTRc3] c8=TR 2.Rxc3 TRxc3[-wTRc3]#

Not deep but fun I hope!

Seetharama-
n
Visitor
Posts: 7
 Re: Time travelling pieceson: October 24, 2012, 07:54

Nh7 is a normal piece, how come it travelled in time and moved another piece (Pc7) ?

Seetharaman

Alex Levit
Visitor
Posts: 4
 Re: Time travelling pieceson: October 24, 2012, 12:12

Yes Nh7 is a normal piece. 1.Ng5[+wTBh3]! means that in the future play white terminator-bishop will go to h3 and then travel to the past. And if we test the solution we can see that this really happens! So no time paradoxes exist. I think more clear way to write down the solution is:
1.Ng5[+wTBh3 from W2]! c8=TB 2.Nxh3 TBxh3[wTBh3 to B1]#

Seetharama-
n
Visitor
Posts: 7
 Re: Time travelling pieceson: October 24, 2012, 12:48

I thought that the words "after making a move" in the definition referred to a move by the Terminator pawn !

Seetharaman

Alex Levit
Visitor
Posts: 4
 Re: Time travelling pieceson: October 24, 2012, 14:12

Yes it's true. Let's see solution from pawn c7 point of view. On W1 pawn promotes without time travelling. On W2 promoted terminator-bishop take knight and travel to the past in B1. So two things happen: in the final position TBh3 disappear and after B1 TBh3 appear.
That's why we have 1.Ng5[+wTBh3 from W2]!

Diyan-
Visitor
Posts: 1
 Re: Time travelling pieceson: October 26, 2012, 13:12

Alex, It’s look interesting. I like very much your example (it’s very clear). Many interesting ideas can be realised with “Terminator”, but the main problem for possible popularisation of this fairy invention is that in my view for the programmers will be impossible to include it into the chess solving programs, because it looks complicated. Without possible computer check will be difficult for composers to use it and the interest will be not so high. But I repeat that I like your idea and wish you good luck!

Alex Levit
Visitor
Posts: 4
 Re: Time travelling pieceson: October 27, 2012, 00:23

Thanks, Diyan! To be honest, I invented terminator more for fun than for serious composing. I don't think that computer prove is impossible here but this is really non-trivial task. To make things simpler we can consider terminators that can travel in future only. I think that the problem with such pieces much more easier to make and computer test. But the paradox would be lost.

Julia
Posts: 13
 Re: Time travelling pieceson: October 29, 2012, 11:05

Alex, I think you can ask programmers about how much complicated it would be for them to program such piece. But do you have more examples for it? Using in other genres? Like in direct mate? Or with fairy pieces? I believe that anyway more examples are needed to understand if it is an interesting idea. But if it is.. - then you could try to finish it!!

Dominique-
Forlot
Visitor
Posts: 8
 Re: Time travelling pieceson: July 10, 2014, 22:54

i like this fairy piece ! really !
not easy for programmers but realy fairy ! and it's the purpose of this site 🙂
let 's the programmer try... they like the challenge!

I think i find an other solution for this first problem:

1.Nf6![+wTBh6]! Terminator-Bh6 is promoted pawn f7 from the future.
1...f8=TB
2.Rg8+! ( only move whitch open the way for the move Bf8-h6 in the time! now 1.Nf6![+wTBh6] is legal, no? )
2...Ba1xf6[-wTBh6]# Now Bh6 goes to the past and black checkmated.

this idea of "Time travelling pieces" seems magic to me!

Edit: in my solution i suppose that the bishop travel form h6 to f8 on the last move!
i.e 2...Ba1xf6[-wTBh6->Tbf8]
the bishop getting back to his square of promotion (the final Time travelling because the way is clear ) But... may it do that? why the bishop would disappeared from the chessboard?

Dominique-
Forlot
Visitor
Posts: 8
 Re: Time travelling pieceson: July 10, 2014, 23:39

so sorry! f7 is not a fairy piece! 😮

Furthermore ... Even in the case than f7 is a terminator my solution does not seem to respect the definition. 🙁 The bishop misses a movement for is second "time travel"

But the following one seems correct i f7 is a terminator :
1.Nf6[+wTBh6]! f8=TB 2.Rg8+! Bh6-f8#

Unfortunately there is many demolitions with f7 as terminator
1.Rg6 [+wTRf6]! f8=TR 2.Rg8! TRf8#
1.Rg5 or 1.Rg4 or 1.Rg3 ... idem

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