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1.e8=N+ Kc6 2.NxQ
e8N
e8 (N) followed by the capture of the queen and the ending is won because the bishop is of the right color
e8N+ – Kb6, Nxd6 – Kc5, Ne4 – Kxb5, Nc3+ – Kc4, Kc2! – Bb3+, Kb2 and Zugzwang.
1. e8N+
2. K moves Nxd6
…an the pawn a3 wins
1.e8N+ Kb6 2.Nxd6 Kc5 3.Ne4+ Kxb5 4.Nc3+ Kc4 5.Kc2 Bb3+ 6.Kb2 Bd1 7.Nxd1.
we can create a very strong knight on the next move:
1. e8N+ Kb6
2. Nxd6 Kc5
3. Ne4+ Kxb5
4. Nc3+ Ka5
5. Nxa2 Ka4
6. Kb2 with a won endgame.
greets, jan
It seems clear to me that white is up with piece and pawn after:
1. e8=N+ Kb6
2. Nxd6 Kc5
3. Ne4+! Kxb5
4. Nc3+
Fork wins because black has not Ka4.
First move played it self, but
3. Ne4+ must be the decisive move here.
(1) e8(N)+ K moves
(2) Nxd6 wins
e8=N+
1. e8Q Qxa3+ is completly drawish.
So we try:
1. e8N+ Kb6
2. Nxd6 Kc5
3. Ne4 Kxb5
4. Nc3+ Kc4
5. Kc2! Bb3+
6. Kb2
Now the bishop is trapped and the a-pawn keeps protected. I tried to puzzle it out without computer and board. The trickiest moment then is to find Kc2. All other moves are very much forced I guess.
Hope all that makes sense.
Dannyboy from Germany
1.e8N+
1. e4N wins the Queen.
Then, after 1…Kb6 2.Nxd6 Kc5 (forking knight and bishop), White has 3.Ne4+, and after 3…Kxb5, 4.Nc3+ wins the Black Bishop. After 4…Ka4, 5.Kb2 saves the pawn and White wins.
e8N Kb6 Nd6 Kc5 Ne4 Kb5 Nc3 Kc4 Kc2 Bb3 Kb2
1.e8=N+ Kb6, 2.Nxd6 Kc5, 3.Ne4+ Kxb5, 4.Nc3+ Kc4, 5.Kb2 winning the B and keeping N and P.
e8(n)+
The king can’t defend the queen and after the knight captures the queen the bishop is protected. Then Kb2 and getting the pieces down to advance the last pawn and/or capture the bishop.
Most of the commenter has this right if black captures at b5 on move 3. However, what if he doesn’t? How do you win that?
e8N+
Quorthon
As a couple of commenters have pointed out the following line loses for black rather directly:
1. e8(N) Kb6
2. Nd6 Kc5
3. Ne4 Kb5
4. Nc3 Kc4
5. Kc2!
A number of you make the mistake of playing Kb2 here, but after Bb3, this is a draw because white is the player in zugzwang, and after white moves the knight, the bishop escapes through a4 (the other legal moves for white either lose the pawn when played to a4, or lose the knight when the king plays to a1 or c1. 5.Kc2 leaves black in zugzwang.
Now, I wondered whether or not the win was easier or harder for white if black declined to take the bishop at b5 which is what allows white to win the bishop and reach the won ending with the rook’s pawn and knight. However, on second thought, since white has the correct bishop, it doesn’t matter whether or not black takes at b5 or not, as long as white keeps the king on the dark squares, he can use the knight drive the black king off the black squares as necessary, take ground and just be careful when moving the pawn onto white squares, using the or the bishop to block attacks as necessary. The point about the bishop is that white never need worry too much about black exchanging off white’s knight or bishop-makes this ending much easier than most.