Daily Rome Shot 746

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White to play and mate in 2.  Tough.

NB: I’ll hold comments with solutions ’till the next day so there won’t be “spoilers” for others.

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9 Comments

  1. palestrinadei says:

    1. Qb4+ (Q or B)d4
    The black king has no escape squares and Black can only interpose. The black queen, in theory, would be able to recapture if White does not manage to find the second move, while the bishop would not, so I would play Qd4 with Black here.
    2. Nf2#
    The checking knight cannot be captured by the interposing black piece pinned by the white queen, while it also keeps the white queen from being recaptured, and the black king still lacks an escape square.

  2. A.S. Haley says:

    Maybe I’m blind to the subtleties of this problem, but I fail to see why 1. d2-d3++ is not mate by White in one. As noted by the previous comment, the Black King has no escape squares, and no way to keep White’s pawn on d2 from moving up one square to apply check (and mate).

    The problem with checking with the Queen at b4 is that Black can block the check with his pawn (d5-d4), thereby opening up an escape square (d5) for his King.

  3. A.S. Haley says:

    Never comment too late at night! 1. d2-d3+ is answered by Ke3 — duh.

    In the clear light of day, I believe this is the solution:

    1. Nf2+ QxN (forced)

    2. Qxh7 mate

  4. A.S. Haley says:

    I realized my previous solution in two moves is really a mate in 3, because after the Black Queen captures the Knight on f2, Black can stall mate by one more move: 2. … Qf5, after which QxQ is mate.

    However, after more thought, I think I may finally have a two-move mate:

    1. N(3)f4! threatens mate by (the White Queen) capturing Black’s pawn on d5. And if Black takes with its pawn … e5xf4, 2. Qxp(5) is still mate, because the Rook then defends the Queen.
    If instead Black moves his Queen to d4 (or a5) to protect his pawn on d5, 2. Qxp(7) is mate.
    Black cannot move his King or any of his pawns, and there is no move by either his Queen or his Bishop which will single-handedly block both mates by capturing either on d5 or or h7 (or, should Black move his Bishop to any square, by 2. Qb1 mate. So Black is doomed after just one move!

    As our host warned, that was indeed a tough, but very satisfying, problem.

  5. Try this.

    White doesn’t have a forcing check that black’s King cannot escape. 1. Rg4+ Kf4 1. Nc5+ Qxc5 etc. An Zwischenzug is helpful as it blocks the king’s escape square.

    1. Nd4 Qxb7
    2. Rg4#

  6. Imrahil says:

    Reverend Father, but black doesn’t need to capture on b7. What about 1. … QxN? Now white could play 2. Nf2+, but that is 2. … QxN again, or 2. Rg4+ but that is 2. … Kf5 and the black king runs away.

  7. Imrahil says:

    Dear A. S. Healay,

    but what about 1. N3f4 QxQ 2. Nf2 Kd4 and the white king runs away, getting the white queen for nothing? The knight blocking d4 is no longer there, after all…

  8. A.S. Haley says:

    Thank you for that correction, Imrahil. I had assumed that is why Father Z. stepped in to give the actual solution.

    Which is still the solution, by the way. If Black plays QxN instead of QxQ, then 2. Qxh7 is mate.

  9. Imrahil says:

    Dear A. S. Haley,

    ah, I see! Thank you!

Comments are closed.