Here is the satuation Black: King(b7), rook (a8), Bishop (e8,b4), pawn (c7,e6,f7,g7) White: King(c4), rook (g4), Knight (f3), pawn (b2,c2,f2,g3)

It is white to move.

r3b3/1kp2pp1/4p3/8/1bK3R1/5NP1/1PP2P2/8 w - - 0 1

In this case, can the white king (c4) capture the black Bishop (b4)?

  • 4
    See how to add a diagram to your question here: chess.meta.stackexchange.com/questions/179/… Commented Mar 24, 2023 at 23:43
  • 6
    Is the question "is it a legal move?" or "is it a good move?" or ? Commented Mar 26, 2023 at 11:25
  • Regardless, white is pretty well doomed. Black has the bishop pair, white is about to lose material, and is already basically trapped. At this point black will almost certainly win, barring a blunder. Commented Mar 29, 2023 at 2:22

3 Answers 3


A more complete answer:

  • Is it legal? Yes, it's a legal king move and the king is not in check afterwards.
  • Is it good? No, as after Ra4+ followed by Rxg4 White is a whole rook down instead of a light piece.
  • Is it relevant? Hardly, Black simply keeps a large winning advantage (after best move Rxg7) anyway, so you can as well take on b4 and pray to Caissa to strike your opponent with chess blindness :-)
  • 2
    Hope that black sees rook a4 and doesn't like it? Commented Mar 26, 2023 at 13:55
  • @ComicSansSeraphim hope he is not a psychic either
    – cmgchess
    Commented Mar 26, 2023 at 16:20

The problem of course is the Ra4+ and the x-ray attack on the white rook, resulting in its loss, so that would be a bad move.

Depending who you play, you may be able to play white pawn B3. If ignored, then the Ra4+ will either not be played, or will result in the loss the of the black rook as it moves to A4.


The black bishop on b4 is unprotected, so it's free for the taking.

Unfortunately, that's not the best move according to Stockfish.

  • Except its not free...
    – brekker
    Commented Mar 30, 2023 at 15:50
  • 2
    An explanation of why Stockfish doesn't like the move would have been great!
    – David
    Commented Apr 5, 2023 at 9:53

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