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Logic Level 2

It's White turn, what is the minimum number of moves White should make to checkmate

Assume that both players played optimally and that Black moves down (pawn).

Designed by Bastian Ismail.
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Terza Reyhan by Terza Reyhan , 26, Indonesia

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4 solutions

Terza Reyhan
Jun 2, 2015

White Knight :

A. 1.[Nd3-b4 | Kc1-c5] 2.[Bf4-d6+ | Kc5xd6] 3.[Qe2-e7+ #] (or) 2.[Bf4-d6+ | Kc5-b6] 3.[Qe2-a6+ #]

B. 1.[Nd3-b4 | b3-b2] 2.[Qe2-c2 | b2-b1 = Q] 3.[Nb4-c6+ #]

C. 1.[Nd3-b4 | Bc1-c3] 2.[Nb4-a6 | a2-a1 = Q] 3.[Bf4-e5+ #]

8 Helpful 3 Interesting 2 Brilliant 3 Confused

I think that "minimum number of moves White should make to guarantee he/she wins the game" is not a correct way of expressing this quiz! After 1.Be5+ Kc4 2.Bxa1 White is guaranteed to win (both players playing optimally): black cannot promote any pawn and checkmating is a matter of few moves. What you actually meant was "minimum number of moves White should make to checkmate"!

Corrado Gioannini - 4 years, 7 months ago

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Absolutely correct Corrado. Any black would immediately resign after Be5+.

Tony Miller - 4 years, 6 months ago

There are some lines missing from this analysis. In particular, 1... Kc3.

Anthony Ritz - 4 years, 10 months ago

The puzzle is worded incorrectly. After 1. Be5+ and 2. Bxa1, white can be sure that they will win. That's two moves. A checkmate in three may be a faster win, but that's not what the question asks. Just ask how many moves to mate.

(I'd make my own post but it won't let me, so I have to comment here)

Brandon Dahl - 4 years, 2 months ago

tough puzzle

Martin Cohen - 3 years, 4 months ago

On 1 ... Kc3, 2 Bd6 with Black in trouble because he must move. On 2 ... Kd4 or 2 ... b2 or 2 ... Bb2, 3 Qd3 mate. On 2 ... d4, 3 Nd5 mate.

Artie Cruz - 4 years, 10 months ago
Meneghin Mauro
Jan 12, 2018

Hard puzzle, very good.

It took my over an hour to find out these 7 variations:

    1. Nb4 Kc3 2. Bd6 d4 3. Nd5#
    1. Nb4 Kc3 2. Bd6 Kd4(or b2 or Bb2) 3. Qd3#
    1. Nb4 b2 2. Qc2 b1Q 3. Nc6#
    1. Nb4 Bb2 2. Bd6 a1Q (or Kc3 or B move) 3.Qd3#
    1. Nb4 Bc3 2. Na6 (any move) 3. Bd5#
    1. Nb4 Kc5 2. Bd6+ Kxd6 3. Qe7#
    1. Nb4 Kc5 2. Bd6+ Kb6 3. Qa6#
4 Helpful 1 Interesting 1 Brilliant 0 Confused

Amazing puzzle

Bowen Liu - 2 years, 4 months ago
Aaron Stephen
Jul 16, 2018
  1. Nb4 Kc3 2. Bd6 b2 3. Qd3#
0 Helpful 0 Interesting 0 Brilliant 0 Confused
Un Owen
Jan 1, 2018

Nd3-b4 Kd4-c3 Bf4-d6 Kd3-c4 Qe2-d3#

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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