2
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A mirrored game is a game where black makes the same moves as white. Doing this, find the fastest possible checkmates for:

  • A Regular Rook

  • A Promoted Rook

  • A Regular Bishop

  • A Promoted Bishop

  • A Regular Knight

  • A Promoted Knight

  • A Promoted Queen

  • A Pawn

May you have fun finding out the answers!

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    $\begingroup$ This seems way too chess and less puzzle to me. $\endgroup$ – North Apr 8 at 19:43
  • $\begingroup$ It's no different from any of the other copycat chess questions. Besides, it would probably get shelled over on CSE. $\endgroup$ – Rewan Demontay Apr 8 at 19:45
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    $\begingroup$ What do you mean copy0cat questions? Also, just because it'll get shelled in CSE doesn't mean it belongs here either. $\endgroup$ – North Apr 8 at 19:46
  • $\begingroup$ Search up the term "copycat chess' in the search bar in. And this is pretty much the only place where chess puzzles can live and breath on Stack Exchange. $\endgroup$ – Rewan Demontay Apr 8 at 19:48
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    $\begingroup$ @North What does that even mean? Being chessy doesn't make something not a puzzle ... $\endgroup$ – Rand al'Thor Apr 8 at 20:28
4
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There was this question on a competitive programming contest. It asked how to checkmate by any pieces (including King!) but not all for promoted one. You may see the full solution here:

Problem L - IPSC 2018

And here they are:

Queen

1. d4 d5 2. Qd3 Qd6 3. Qh3 Qh6 4. Qxc8#
Link (online viewer)

Knight

1. Nc3 Nc6 2. Ne4 Ne5 3. e3 e6 4. Ne2 Ne7 5. c3 c6 6. Nd6#
Link (online viewer)

Rook

1. Nf3 Nf6 2. Ng5 Ng4 3. Nxh7 Nxh2 4. Nxf8 Nxf1 5. Ne6 Ne3 6. Rxh8#
Link (online viewer)

Promoted Rook (and Promoted Queen)

1. c4 c5 2. d4 d5 3. dxc5 dxc4 4. c6 c3 5. c7 c2 6. cxd8=R#
Link (online viewer)

Pawn

1. f4 f5 2. g4 g5 3. gxf5 gxf4 4. Nf3 Nf6 5. Ng5 Ng4 6. f6 f3 7. f7#
Link (online viewer)

Bishop

1. e4 e5 2. f4 f5 3. exf5 exf4 4. f6 f3 5. fxg7 fxg2 6. Be2 Be7 7. Bh5#
Link (online viewer)

King

1. f3 f6 2. Kf2 Kf7 3. Kg3 Kg6 4. Kh3 Kh6 5. e3 e6 6. Bd3 Bd6 7. Bg6 Bg3 8. hxg3 hxg6 9. Kg4#
Link (online viewer)

Promoted Bishop (my own answer -- may not be optimal)

1. g4 g5 2. h4 h5 3. hxg5 hxg4 4. g6 g3 5. g7 g2 6. Nh3 Nh6 7. Ng5 Ng4 8. g8=B g1=B 9. Bxf7#
Link (online viewer)

Promoted Knight (my own answer -- may not be optimal)

1. c4 c5 2. b4 b5 3. cxb5 cxb4 4. b6 b3 5. b7 b2 6. bxc8=N bxc1=N 7. e3 e6 8. Ne2 Ne7 9. Nd6#
Link (online viewer)

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  • $\begingroup$ Wow. The only one that I found myself was the pawn one. And the queen one was found by Samual Lloyd, I believe. $\endgroup$ – Rewan Demontay Apr 9 at 1:48
  • $\begingroup$ If you add in ones for promoted pieces, I’ll glady checkmark this for you! :D $\endgroup$ – Rewan Demontay Apr 9 at 1:50
  • $\begingroup$ @RewanDemontay I've just updated for promoted rook/queen, but not yet for the others >< $\endgroup$ – athin Apr 9 at 1:51
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    $\begingroup$ @RewanDemontay added the rests, you may check them ^^ $\endgroup$ – athin Apr 9 at 2:40
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    $\begingroup$ Also, just for fun, maybe you could find them fastest way using s promoted king, just cause why not? It sounds really interesting to me. $\endgroup$ – Rewan Demontay Apr 9 at 3:01
1
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Partial Answer

A Regular Rook

1. h4, h5
2. g3, g6
3. Bh3, Bh6
4. Bg4, Bg5
5. hxg5, hxg4
6. Nf3, Nf6
7. Nd4, Nd5
8. Rxh8#

Optimal, clarified by OP.

A Promoted Rook/Promoted Queen

1. h4, h5
2. g4, g5
3. hxg5, hxg4
4. g6, g3
5. Bh3, Bh6
6. Be6, Be3
7. Nf3, Nf6
8. Nd4, Nd5
9. g7, g2
10. gxh8R# for the Rook case.

or

10. gxh8Q# for the Queen case

Not optimal.

A Regular Bishop

1. g3, g6
2. Nf3, Nf6
3. Ng5, Ng4
4. Nc3, Nc6
5. Nd5, Nd4
6. Nf4, Nf5
7. Nxg6, Nxg3
8. Bg2, Bg7
9. Bd5, Bd4
10. Bxf7#

Not optimal.

A Regular Knight

1. e3, e6
2. Ne2, Ne7
3. g3, g6
4. Nbc3, Nbc6
5. Ne4, Ne5
6. Nf6#

Optimal, clarified by OP.

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  • $\begingroup$ That is not optimal. You are very close, however. $\endgroup$ – Rewan Demontay Apr 8 at 22:40
  • $\begingroup$ That was for the bishop just to clarify. $\endgroup$ – Rewan Demontay Apr 8 at 23:18
  • $\begingroup$ Regular Rook optimal, promoted/queen isn’t. And that knight game does not end in a checkmate. See here (I followed your exact game. Please correct me if I’m wrong): apronus.com/chess/pgnviewer/…*&s=White&n=11&f= $\endgroup$ – Rewan Demontay Apr 8 at 23:43
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    $\begingroup$ Here: apronus.com/chess/pgnviewer/… $\endgroup$ – hexomino Apr 9 at 0:13
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    $\begingroup$ Move 4 should be Nbc3, not Nec3, I'll edit to clarify. $\endgroup$ – hexomino Apr 9 at 0:14

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