Well done.

V-3

1. Kg6 Ne5+
2. Kf6 Nxf7
3. Ke7 Ra8
4. Bb3 Nc6
5. Bd5+ Nc6
6. Kd6 Rd8+
7. Kc5 Rc8
8. Kb5 Kc7
9. Bxc6

Yancey, Here is the solution for your variant.

V-1

1. Kg6 Ne5+
2. Kf6 Nxf7
3. Ke7 Ra8
4. Bb3 Nc6
5. Bd5+ Nc6
6. Kd6 Kb6
7. Bxc6

V-2

1. Kg6 Ne5+
2. Kf6 Nxf7
3. Ke7 Ra8
4. Bb3 Nc6
5. Bd5+ Nc6
6. Kd6 Rd8+
7. Kc5 Kc7
8. Bxc6

In the second puzzle, what if black defends by maneuvering the knight to block the skewer from d5 at c6 by playing 4. ....Ne5 5.Bd5 Nc6?

Yancey, Here is the solution for the second puzzle.

1. Kg6 Ne5+
2. Kf6 Nxf7
3. Ke7 Ra8
4. Bb3 Ra6
5. Bxf7 Rh6
6. Bd5+ Kb6

The first puzzle is more difficult.
Here is the solution.

1. Qe4 Nf8
2. Qf5 g5
3. Qf6+ Kh7
4. Nh5 Qd3
5. Qf7+ Kh8
6. Qf6+ Kh7
7. Qf7+ Kh8
8. Qf6+ Kh7
   It's a draw.

Also, a second puzzle today for Alena- white to play and draw 5r2/1k3P2/8/7K/B7/5n2/8/8 w - - 0 1

Puzzle for Alena- White to move. Is this a win, loss, or draw for White?
6rk/p5pn/6Q1/3p4/5NP1/7P/P4PK1/3q4 w – – 0 1

Well done. You don't see a lot of underpromotions to bishop in chess problems.

Yes Yancey you are right. I didn't see a stalemate. Here is the solution.

1. Nf7+ Kh4
2. h8=B! Qb8+
3. Be5 Qc7
4. Nd6 Kg5
5. Ne4+ Kh4
6. Bg3+ Qxg3+
7. Nxg3 Kg5
8. Kg2 Kf4
9. Nxh5+ Ke4
10. Ng3+ Ke5
11. Kf3 Kd4
12. Nf5+ Ke5
13. Nxe3 Ke6
    It's a winning position for white.

I will just state it up front- 1.Nf7 Kh4 2.h8=Q is a draw with best play.

No, Alena, black's best defense is 1.Nf7 Kh4!. This is not an easy puzzle.

Yancey, Here is the solution for your puzzle. It's a very easy puzzle. It took me a couple of minutes to solve it. The idea is the transition to a pawn ending.

1. Nf7+ Kf6
2. h8=Q+ Qxh8
3. Nxh8 Kg7
4. Kg3 Kxh8
5. Kh4 Kg7
6. Kxh5 Kf6
7. Kg4 Ke5
8. Kf3 Kd4
9. h4 Ke5
10. Kxe3 Kf5
11. Kd4 Kg4
12. e4 Kxh4
13. Kd5 Kg5
14. Kd6 Kf4
15. e5 Kf5
16. e6 Kg6
17. Kd7 Kf6
18. e7 Ke5
19. e8=Q+

24.e8=Q and mate in 6 follows

23.e7 Kf4

22.e6 Ke3

21.e5 Kf2

20.e4 Kg1

19.Qxh1+ Kxh1

18.Qh6+ Kg1

17.Qxe3+ Kh2

16.Qe4 h1=Q

15.... Kg1

(15. Qxh2 is wrong, but still it wins)

15.*Qb7+

Sacrificing the queen

15.Qxh2

14.b8=Q h2

13.b7 h3

12.b6 h4

11.Kc5 Kg2

*10

1. Kxb6 Kxh3

*9.Kxb7 Kh4

8.Kxb7 Kh4

8.Kc7 Kg5

7.Kd6 Kg6

*6.Ke5 Kf7

6.Kxe3

5.Kf4 Kg7

4.Kg3 Kxh8

3.Nxh8 Kg7

2.h8=Q+ Qxh8

1.Nf7+ Kf6

Answer:

Puzzle for Alena- white to move and win q6N/1p5P/1p6/1P4kp/8/4p2P/4P2K/8 w – – 0 1

The ability to make a waiting move with the backward f-pawn is winning for white.

1. Ke3 Ke7
2. Kd3 Kd7
3. Kd4 Kd6
4. f3 Ke6
5. Kc5 Ke7
6. Kd5 Kf6
7. Kd6 Kg7
8. Ke6 Kg6
9. Ke5 Kf7
10. Kxf5 Ke7
11. Kg6 Kd6

It's a winning position for white.