Answers.Body: <p>I have found another solution, 25 plies.</p>
  <pre><code>[FEN &quot;&quot;]
  [startply &quot;25&quot;]
  
  1. a3 b6 2.Nc3 Nh6 3. Nd5 d6 4. Nxb6 axb6 5. c3 f6 6. e3 Kf7 7. g4 Nxg4 8. Bd3 Nxh2 9. Bxh7 Bg4 10. Bg6+ Kxg6 11. Qxg4+ Kh6 12. Qg3 Ra7 13. Rxh2#
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-02-08T16:42:26.153Z
Answers.Text: For the record, here is mine, also 25, but rather different: 1.a4 Nf6 2.Na3 b5 3.axb5 d6 4.b6 axb6 5.g4 Nxg4 6.Bh3 Nxh2 7.c3 Bxh3 8.Qc2 Ra7 9.Qxh7 f6 10.Qxh3 Kf7 11.e3 Kg6 12.Qxg3 Kh6 13.Rxh2#
Answers.UserDisplayName: Hauke Reddmann
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-02-03T23:19:23.003Z
Answers.LastActivityDate: 2022-02-04T17:30:03.897Z
Answers.LastEditDate: 2022-02-04T17:30:03.897Z
Answers.UserDisplayName: anion
Answers.Body: <p>Here is a proposition in 29 plies.</p>
  <pre><code>[FEN &quot;&quot;]
  [startply &quot;29&quot;]
  
  1. Nc3 b6 2. e3 Bb7 3. Ne4 h5 4. g3 Bxe4 5. Bd3 h4 6. Bxe4 hxg3 7. Bxa8 gxh2 8. a3 Nf6 9. c3 Nd5 10. Bxd5 f6 11. Bf7+ Kxf7 12. Qf3 d6 13. Qf4 Kg6 14. Qg3+ Kh6 15. Rxh2#
  </code></pre>
  <p>We can probably save 2, 4, or 6 plies on the way.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-02-03T08:23:06.790Z
Answers.Text: For starters, my game saved one move pair (same final) and I still think it isn't optimal...
Answers.UserDisplayName: Hauke Reddmann
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-02-03T07:29:11.190Z
Answers.LastActivityDate: 2022-02-04T17:31:13.163Z
Answers.LastEditDate: 2022-02-04T17:31:13.163Z
Answers.UserDisplayName: Evargalo
Answers.Body: <p>Arriving at 28. Na1#</p>
  <ul>
  <li>a1=N, 5 moves incl. the mating move Na1#;</li>
  <li>a3=R, 2 moves incl. pushing a-pawn;</li>
  <li>b2=Q, 3 moves incl. pushing c-pawn;</li>
  <li>c3=R, 6 moves incl. 0-0, excl. Q-clearance, see above;</li>
  <li>c1=B, 2 moves (clearance for Rfc1);</li>
  <li>d2=p, -</li>
  <li>e1=N, 1 move, excl. 0-0, see above</li>
  <li>e3=p, 1 move</li>
  <li>g3=p, 0 moves (accounted for in c3=R).</li>
  </ul>
  <p>Got another 8 moves for pushing b-pawn, recaptures on the queenside and g2 as well as preparing Na1# discovered mate tempowise. Rather confident though that this can be done more efficiently.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2022-02-03T03:00:33.320Z
Answers.LastActivityDate: 2022-02-03T03:00:33.320Z
Answers.UserDisplayName: starrin
Body: <p>Yes, it <em>is</em> silly.</p>
  <p>So you begin at the normal starting position and help-play
  until Black is mated (White shall have the last move since Black begins in checkers) and the mating position looks like the starting position of checkers, with any remaining piece acting as a checkers piece. <a href="https://i.sstatic.net/3rONo.png" rel="noreferrer"><img src="https://i.sstatic.net/3rONo.png" alt="See here" /></a></p>
  <p>I <em>do</em> have a solution but of course the shortest one wins.</p>
  
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-02-03T06:38:30.560Z
Comments.Text: When you play checkers with chessmen, what happens when you make a king?
Comments.UserDisplayName: bof
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-02-03T08:24:55.590Z
Comments.Text: @bof: In German checkers, the king is a queen...oh wait, doesn't actually solve the main problem :-)
Comments.UserDisplayName: Hauke Reddmann
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2022-02-03T13:18:11.563Z
Comments.Text: At our local chess club, we invented a bughouse variation where one board played (international) draughts and the other one chess. Captured pieces could be used on the other board but kept their intrinsic movement rules.
Comments.UserDisplayName: Glorfindel
Tags: <problems>
Title: Play a chess game so that at the end you can start a game of checkers
ThreadText: # Play a chess game so that at the end you can start a game of checkers
  
  (Asked by: username_0 on 2022-02-02)
  
  Yes, it *is* silly.
  
  So you begin at the normal starting position and help-play
  until Black is mated (White shall have the last move since Black begins in checkers) and the mating position looks like the starting position of checkers, with any remaining piece acting as a checkers piece. [![See here](https://i.sstatic.net/3rONo.png)](https://i.sstatic.net/3rONo.png)
  
  I *do* have a solution but of course the shortest one wins.
  
  **Tags:** problems
  
  > **Comments:**
  > **username_1**: When you play checkers with chessmen, what happens when you make a king?  
  > **username_0**: @username_1: In German checkers, the king is a queen...oh wait, doesn't actually solve the main problem :-)  
  > **username_2**: At our local chess club, we invented a bughouse variation where one board played (international) draughts and the other one chess. Captured pieces could be used on the other board but kept their intrinsic movement rules.  
  
  ---
  
  ## 3 answers
  
  ### Answer by username_3 on 2022-02-03. Score: 6 | Accepted answer
  
  I have found another solution, 25 plies.
  
  ```
  [FEN ""]
  [startply "25"]
  
  1. a3 b6 2.Nc3 Nh6 3. Nd5 d6 4. Nxb6 axb6 5. c3 f6 6. e3 Kf7 7. g4 Nxg4 8. Bd3 Nxh2 9. Bxh7 Bg4 10. Bg6+ Kxg6 11. Qxg4+ Kh6 12. Qg3 Ra7 13. Rxh2#
  
  ```
  
  > **Comments:**
  > **username_0**: For the record, here is mine, also 25, but rather different: 1.a4 Nf6 2.Na3 b5 3.axb5 d6 4.b6 axb6 5.g4 Nxg4 6.Bh3 Nxh2 7.c3 Bxh3 8.Qc2 Ra7 9.Qxh7 f6 10.Qxh3 Kf7 11.e3 Kg6 12.Qxg3 Kh6 13.Rxh2#  
  
  ---
  
  ### Answer by username_4 on 2022-02-03. Score: 8
  
  Here is a proposition in 29 plies.
  
  ```
  [FEN ""]
  [startply "29"]
  
  1. Nc3 b6 2. e3 Bb7 3. Ne4 h5 4. g3 Bxe4 5. Bd3 h4 6. Bxe4 hxg3 7. Bxa8 gxh2 8. a3 Nf6 9. c3 Nd5 10. Bxd5 f6 11. Bf7+ Kxf7 12. Qf3 d6 13. Qf4 Kg6 14. Qg3+ Kh6 15. Rxh2#
  
  ```
  
  We can probably save 2, 4, or 6 plies on the way.
  
  > **Comments:**
  > **username_0**: For starters, my game saved one move pair (same final) and I still think it isn't optimal...  
  
  ---
  
  ### Answer by username_5 on 2022-02-03. Score: 2
  
  Arriving at 28. Na1#
  
  * a1=N, 5 moves incl. the mating move Na1#;
  * a3=R, 2 moves incl. pushing a-pawn;
  * b2=Q, 3 moves incl. pushing c-pawn;
  * c3=R, 6 moves incl. 0-0, excl. Q-clearance, see above;
  * c1=B, 2 moves (clearance for Rfc1);
  * d2=p, -
  * e1=N, 1 move, excl. 0-0, see above
  * e3=p, 1 move
  * g3=p, 0 moves (accounted for in c3=R).
  
  Got another 8 moves for pushing b-pawn, recaptures on the queenside and g2 as well as preparing Na1# discovered mate tempowise. Rather confident though that this can be done more efficiently.
  
  
  ---
  
  