Answers.Body: <p>Ask yourself: what would Black do if he were to move? After 1... Kc7, 2. Bxe5 is mate. His other option is 1... c5, threatening to escape with 2... Kc6.</p>
  
  <p>The solution:</p>
  
  <blockquote class="spoiler">
    <p> 1. Nc5! blocks the c-pawn. Black gets the additional option of 1... Kxc5, but after that, 2. Ne4 is mate.</p>
  </blockquote>
  
  <p><sub>(I can post an interactive version, but that doesn't work with spoilers. And it's a good visualization exercise.)</sub></p>
  
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-26T16:29:33.723Z
Answers.Text: There's a second solution . . .
Answers.UserDisplayName: pokep
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-27T10:31:56.970Z
Answers.Text: @pokep maybe; I didn't look any further than this one. If there is one, you can (should) post it as a second answer.
Answers.UserDisplayName: Glorfindel
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-28T14:52:53.623Z
Answers.Text: >! Looks like 1.Nd4 Kc5 (or c5) 2.Ne4 is checkmate
Answers.UserDisplayName: Rick G
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-28T16:25:04.693Z
Answers.Text: @RickG after 1. Nd4 c5 2. Ne4 the black king can escape (temporarily) to c7.
Answers.UserDisplayName: Glorfindel
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-30T02:09:53.647Z
Answers.Text: @Glorfindel yup, missed that!
Answers.UserDisplayName: Rick G
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-06-15T01:49:28.327Z
Answers.Text: Actually, this does not guarantee a two-move checkmate. Black could make a dumb move Ng4 or Nc4 after white plays Nc5! to check white's king and delay the checkmate operation.
Answers.UserDisplayName: Wais Kamal
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-06-15T05:13:10.627Z
Answers.Text: @WaisKamal the black knight is pinned.
Answers.UserDisplayName: Glorfindel
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-06-15T14:54:26.647Z
Answers.Text: Oh yeah didn't give that mucha attention...thanks :)
Answers.UserDisplayName: Wais Kamal
Answers.ContentLicense: CC BY-SA 3.0
Answers.CreationDate: 2017-05-25T14:03:43.817Z
Answers.LastActivityDate: 2017-05-25T14:03:43.817Z
Answers.UserDisplayName: Glorfindel
Body: <p>I have been trying to solve this for a long time, but can't find a solution. How can white force a checkmate in 2 moves?</p>
  
  <pre><code>1R6/4p3/2pkB3/4n1N1/8/1N2K1B1/8/8 w - - 0 1
  </code></pre>
  
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-25T14:22:13.637Z
Comments.Text: If only there was a way to stop `1... c5` ...
Comments.UserDisplayName: Dag Oskar Madsen
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-25T21:32:46.763Z
Comments.Text: You can solve a mate in two problem by trying every move for White.
Comments.UserDisplayName: bof
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-25T22:22:11.777Z
Comments.Text: @bof For this reason mate in two problems are actually quite good for practicing your calculation skills. I think Laszlo Polgar used to give such problems to his daughters when they were young.
Comments.UserDisplayName: Dag Oskar Madsen
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-25T23:07:52.490Z
Comments.Text: On good problems, it is rare that the first move is check.
Comments.UserDisplayName: Tony Ennis
Comments.ContentLicense: CC BY-SA 3.0
Comments.CreationDate: 2017-05-26T01:21:21.220Z
Comments.Text: I dont think the OP is asking for mate in two moves; hes asking to find, within two moves, a forced mating variation (look at the wording!) Regardless, @Glorfindel has found a mate in two.
Comments.UserDisplayName: Jossie Calderon
Tags: <checkmate><problems>
Title: Chess challenge from a newspaper in 1927 (win in 2 moves)
ThreadText: # Chess challenge from a newspaper in 1927 (win in 2 moves)
  
  (Asked by: username_0 on 2017-05-25)
  
  I have been trying to solve this for a long time, but can't find a solution. How can white force a checkmate in 2 moves?
  
  ```
  1R6/4p3/2pkB3/4n1N1/8/1N2K1B1/8/8 w - - 0 1
  
  ```
  
  **Tags:** checkmate, problems
  
  > **Comments:**
  > **username_1**: If only there was a way to stop `1... c5` ...  
  > **username_2**: You can solve a mate in two problem by trying every move for White.  
  > **username_1**: @username_2 For this reason mate in two problems are actually quite good for practicing your calculation skills. I think Laszlo Polgar used to give such problems to his daughters when they were young.  
  > **username_3**: On good problems, it is rare that the first move is check.  
  > **username_4**: I dont think the OP is asking for mate in two moves; hes asking to find, within two moves, a forced mating variation (look at the wording!) Regardless, @username_5 has found a mate in two.  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_5 on 2017-05-25. Score: 10
  
  Ask yourself: what would Black do if he were to move? After 1... Kc7, 2. Bxe5 is mate. His other option is 1... c5, threatening to escape with 2... Kc6.
  
  The solution:
  
  > 1. Nc5! blocks the c-pawn. Black gets the additional option of 1... Kxc5, but after that, 2. Ne4 is mate.
  
  (I can post an interactive version, but that doesn't work with spoilers. And it's a good visualization exercise.)
  
  > **Comments:**
  > **username_6**: There's a second solution . . .  
  > **username_5**: @username_6 maybe; I didn't look any further than this one. If there is one, you can (should) post it as a second answer.  
  > **username_7**: >! Looks like 1.Nd4 Kc5 (or c5) 2.Ne4 is checkmate  
  > **username_5**: @username_7 after 1. Nd4 c5 2. Ne4 the black king can escape (temporarily) to c7.  
  > **username_7**: @username_5 yup, missed that!  
  > **username_8**: Actually, this does not guarantee a two-move checkmate. Black could make a dumb move Ng4 or Nc4 after white plays Nc5! to check white's king and delay the checkmate operation.  
  > **username_5**: @username_8 the black knight is pinned.  
  > **username_8**: Oh yeah didn't give that mucha attention...thanks :)  
  
  ---
  
  