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 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 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#
  
  
  ---
  
  