Answers.Body: <p>On a similar note, here is a <a href="https://www.yacpdb.org/#327955" rel="nofollow noreferrer">pretty problem</a> forces Black to take all eight pieces and two pawns in order to give checkmate with the last pawn!</p>
  <pre><code>[Title &quot;Julio César Infantozzi, Mate In 16 Moves&quot;]
  [FEN &quot;R1n2N2/4pk1B/2Q1r2B/2K2b2/Rr1n2P1/1q1P1PP1/4N2b/8 w - - 0 1&quot;]
  
  1. Qe8+ Kxe8 2. Rxc8+ Kf7 3. Bg8+ Kxg8 4. Ng6+ Kh7 5. Rh8+ Kxg6 6. Nf4+ Kf6 7. Rf8+ Ke5 8. Bg7+ Rf6 9. Bxf6+ exf6 10. Re8+ Ne6+ 11. Rxe6+ Qxe6 12. Ng6+ Bxg6  13. f4+ Rxf4 14. gxf4+ Bxf4 15. Re4+ Bxe4 16. d4
  </code></pre>
  <p>Additionally, I found another problem in a Dutch <a href="https://timkr.home.xs4all.nl/admag/woest.htm" rel="nofollow noreferrer">article by Tim Krabbe</a> where White gives away four queens, two rooks, and two knights to also give mate with the last pawn. The most heaviest bag of material sacrificed in a chess problem ever!</p>
  <pre><code>[Title &quot;Mate in 13 Moves, Gerhad Josten, Tim Krabbe “ONSTERFELIJKE WOESTHEID”, 2000&quot;]
  [FEN &quot;1q4r1/1bp2pQ1/3Q4/1Kp1pr2/1n1pkp1p/RQ1RN3/nbnP4/QN6 w - - 0 1&quot;]
  
  1. Kc4 cxd6 2. Nc3+ Nxc3 3. Qh1+ f3 4. Qxh4+ Rf4 5. Qhh7+ f5 6. Qxb7+ Qxb7 7.  Qxb7+ d5+ 8. Qxd5+ Ncxd5 9. Nxd5 Nxd5 10. Re3+ Ncxe3+ 11. Qxe3+ Nxe3+ 12. Rxe3+  dxe3 13. d3#
  </code></pre>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-11-14T03:51:00.677Z
Answers.LastActivityDate: 2020-09-02T22:12:30.843Z
Answers.LastEditDate: 2020-09-02T22:12:30.843Z
Answers.UserDisplayName: Rewan Demontay
Answers.Body: <p>White to play and mate in 4, while forcing the black king to capture on each move:</p>
  
  <pre><code>[fen "1r2qrnk/3R1bRp/pp2nBpp/p3P3/4B3/5PPQ/PPP3N1/1K6 w - - 0 1"]
  </code></pre>
  
  <p>Solution:</p>
  
  <blockquote class="spoiler">
    <p> 1.Rxh7 Kxh7  <br> 2.Bxg6 Kxg6  <br> 3.Qf5 Kxf5  <br> 4.Nh4#  </p>
  </blockquote>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2014-09-27T03:56:55.393Z
Answers.LastActivityDate: 2019-09-27T12:42:34.837Z
Answers.LastEditDate: 2019-09-27T12:42:34.837Z
Answers.UserDisplayName: ETD
Body: <p>Could a player sacrifice 3 of his pieces , the opponent's King being forced to take each piece in a sequence of moves where the opponent's King lands on a space where it is promptly checkmated? A kind of 3-move forced checkmate. Could this be done with 4 moves?</p>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2014-09-28T04:58:25.183Z
Comments.Text: Could a similar 3-move forcing of the opponents King be done to force a stalemate position?
Comments.UserDisplayName: user128932
Comments.ContentLicense: CC BY-SA 4.0
Comments.CreationDate: 2019-09-30T00:39:17.237Z
Comments.Text: Are you allowing a pawn to count as a "piece" here?  If yes then one can surely go well beyond 4.
Comments.UserDisplayName: Noam D. Elkies
Tags: <checkmate><problems><forced-move>
Title: About forcing a checkmate
ThreadText: # About forcing a checkmate
  
  (Asked by: username_0 on 2014-09-27)
  
  Could a player sacrifice 3 of his pieces , the opponent's King being forced to take each piece in a sequence of moves where the opponent's King lands on a space where it is promptly checkmated? A kind of 3-move forced checkmate. Could this be done with 4 moves?
  
  **Tags:** checkmate, problems, forced-move
  
  > **Comments:**
  > **username_0**: Could a similar 3-move forcing of the opponents King be done to force a stalemate position?  
  > **username_1**: Are you allowing a pawn to count as a "piece" here?  If yes then one can surely go well beyond 4.  
  
  ---
  
  ## 2 answers
  
  ### Answer by username_3 on 2014-09-27. Score: 10 | Accepted answer
  
  White to play and mate in 4, while forcing the black king to capture on each move:
  
  ```
  [fen "1r2qrnk/3R1bRp/pp2nBpp/p3P3/4B3/5PPQ/PPP3N1/1K6 w - - 0 1"]
  
  ```
  
  Solution:
  
  > 1.Rxh7 Kxh7   
  >  2.Bxg6 Kxg6   
  >  3.Qf5 Kxf5   
  >  4.Nh4#
  
  
  ---
  
  ### Answer by username_2 on 2019-11-14. Score: 0
  
  On a similar note, here is a [pretty problem](https://www.yacpdb.org/#327955) forces Black to take all eight pieces and two pawns in order to give checkmate with the last pawn!
  
  ```
  [Title "Julio César Infantozzi, Mate In 16 Moves"]
  [FEN "R1n2N2/4pk1B/2Q1r2B/2K2b2/Rr1n2P1/1q1P1PP1/4N2b/8 w - - 0 1"]
  
  1. Qe8+ Kxe8 2. Rxc8+ Kf7 3. Bg8+ Kxg8 4. Ng6+ Kh7 5. Rh8+ Kxg6 6. Nf4+ Kf6 7. Rf8+ Ke5 8. Bg7+ Rf6 9. Bxf6+ exf6 10. Re8+ Ne6+ 11. Rxe6+ Qxe6 12. Ng6+ Bxg6  13. f4+ Rxf4 14. gxf4+ Bxf4 15. Re4+ Bxe4 16. d4
  
  ```
  
  Additionally, I found another problem in a Dutch [article by Tim Krabbe](https://timkr.home.xs4all.nl/admag/woest.htm) where White gives away four queens, two rooks, and two knights to also give mate with the last pawn. The most heaviest bag of material sacrificed in a chess problem ever!
  
  ```
  [Title "Mate in 13 Moves, Gerhad Josten, Tim Krabbe “ONSTERFELIJKE WOESTHEID”, 2000"]
  [FEN "1q4r1/1bp2pQ1/3Q4/1Kp1pr2/1n1pkp1p/RQ1RN3/nbnP4/QN6 w - - 0 1"]
  
  1. Kc4 cxd6 2. Nc3+ Nxc3 3. Qh1+ f3 4. Qxh4+ Rf4 5. Qhh7+ f5 6. Qxb7+ Qxb7 7.  Qxb7+ d5+ 8. Qxd5+ Ncxd5 9. Nxd5 Nxd5 10. Re3+ Ncxe3+ 11. Qxe3+ Nxe3+ 12. Rxe3+  dxe3 13. d3#
  
  ```
  
  
  ---
  
  