White to move and win. No computer analysis please.
4R2N/4P3/3N3k/8/8/5p2/6q1/4K3 w – – 0 1
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Special overnight chess tactic
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White to move and win. No computer analysis please.
4R2N/4P3/3N3k/8/8/5p2/6q1/4K3 w – – 0 1
1.Rg8 Qxg8 2.e8(Q) Qxe8 3.Nxe8 +-
12:13 Anon — 1. … Qe2# 0-1
There are a lot of lines to look through, but I’m convinced that the first move is to check with the corner knight. It looks like Black will have to either allow white’s pawn to promote or lose the queen to a rook check.
Nhf7+,Kg7
Rg8+, Kxg8
e8=Q+, kg7
Qg8+ and Qxg2
ooops Qh8+ first, then Qg8+ and Qxg2
I don’t know if one Queen + 2 Knights wins against a Queen, if it does then I think…
1.N8f7+ Kh5
2.Rh8+ Kg4
3.Rg8+ Kh3
4.RxQ PxR
5.e8Q
Maybe white wins.
1. Nhf7+ Kg7 (or any square on the g-file…or stay on the h file, Rh8+ and go to the g-file)
2. Rg8+ Kf6 (Kxg8 or Kxf7 leads to e8=Q+ and a quick win for white)
3. e8=N+ King Move
4. Rxg2 xg2
5.Kf2 g1=Q+
6. Kxg1
3 Knights + King vs King is a win.
so lets try:
1.N8f7+
1…Kh5
2.Rh8+ Kg4
3.Rg8+ Kh3
4.Rxg2 fxg2 (4…Kxg2 5.Ne4)
5.Ng5+ Kh2 (5…Kg3 N6e4)
6.Nf3+
1…Kg7
2.Rg8+ Kxg8
3.e8=Q+ Kg7
4.Qh8+ Kg6
5.Qh6++
1…Kg7
2.Rg8+ Kf6
3.e8=N+ Ke7
4.Rxg2
i suppose that 3 knights can give mate, but i’m not sure 🙂
hey guys jochen and co are right, its more of a fun if we discuss and talk variations, so lets talk!
so if you see any mistakes or improvements tell us, i will do the same, its more of a fun
I think i should go back to competition if mistakes occur like here and the previous puzzle (i think the solutions are very simple and forcing). But still i’m disappointed of the new rules of FIDE, and of its obsolete and nasty ranking variations.
Nhf7+ looks right, after which:
1… Kg7
2. Rg8+ Kxg8
3. e8=Q+ Kg7/h7
4. Qh8+ Kg6
5. Qh6++
1.Nhf7+ wins in short order, e.g. 1…Kg7 2.Rg8+! Kxg8 3.e8(Q)+ Kh7 4.Qh8+ Kg6 5.Qh6#
1.Nhf7+ Kg7
(1..Kh7 2.Rh8+ Kg7 3.Rg8+ Kxg8 4.e8=Q+ Kg7 4.Qh8+ Kg6 5.Qh6#)
(1..Kh5 2.Rh8+ Kg4 3.Rg8+ Kh3 4.Rxg2 fxg2 5.Ng5+ &Nf3 & Kf2 winning moves)
2.Rg8+ Kxg8
3.e8=Q+ Kg7
4.Qh8+ Kg6
5.Qh6+# 1-0
But this r only few variations..At the end white will win is what i feel
Nice one though I am not sure if I am able to win the end position. Never tried it to mate with 3 knights, it is for sure hard is it!?
White’s main winning idea is to get the king to the g file to win the queen by Rg8+. One idea is that after
1. Nhf7+, Kg7 (or Kh7 2. Rh8+, Kg7 doesn’t make a big difference) trying to keep g8 defended 2. Rg8+!! is though possible with 2. -, Kxg8 3. e8Q+, Kg7/Kh7 4. Qh8+, Kg6 5. Qh6#.
So black makes a last try attacking e7 to get an end game KQ vs KQNN.
1. Nhf7+, Kg7 (Kh7/Kh5 2. Rh8+ transposes to the other line; Kg6/Kg5 2. Rg8+, too) 2. Rg8+!, Kf6 (in all cases the best defense) and now
3. Rxg2?!, fxg2 4. e8Q (4. Kf2??, Kxe7 =), g1Q+ is won for white, too, (I have to admit: As I would prefer the other line and thought it was the only winning line I looked this result in the online database for end games with less then 7 pieces) but gives a hard to play end game KQNN vs KQ so better play
3. e8N+! and 4. Kf2 with a little easier end game.
So I think this exercise is not well-defined solvable but with respect to a real end game where I do not want to play QNN vs Q I have a preferable solution.
I likes this one, I hope I have solved it right.
Best wishes from Germany
Jochen
1. Nf7+!
King can’t stay on h-file because of Rh8+ and Rg8+ winning black queen and pawn. +-
If King moves to any square but g7 then Rg8+ check +-
…Kg7
2. Rg8+!
If ..Kxg8 then f8=Q+ followed by Qh8+ and Qh6 mate.
If king moves out, then f8=N+ followed by Rxg2. +-
1. Rf7+
I’ll try
1. Nhf7+ Kh5 (Kg7 Rg8+ Kg8 [Kf6 e8N+ K~ Rg2] e8Q+) 2. Rh8+ Kg4 3. Rg8+ Kh3 (Kf4 Rg2 fg Kf2) 4. Rg2 fg (Kg2 Ne4) 5. Ng5+ Kg3 6. Ne4+ Kh2 7. Nf3+ +- probably that’s not it though
The best I could do was
Nhf7 + Kg7
Rg8+ K g8
e8Q
If instead of 2…Kg8
Black plays 2….Kf6
R*f2 g*f2
e8 N + King move
Kf2.
I don’t know whether 3 knights win.
1.Nhf7+ Kg7 (Kh~ Rh8+)
2.Rg8+! Kf6! (Kxg8? 3.e8Q+)
3.Rxg2 (3.e8Q f2+ 4.K~ f1Q+ +-)
3…. fxg2
4.e8N+! K~
5.Kf2 +-
Nice. Three knights against the black king.
1. Nhf7
if
1. … Kg7
2. Rg8+ Kxg8
3. e8Q+ Kg7 (or Kh7)
4. Qh8+ Kg6
5. Qh6#
if
1. … Kh7
2. Rh8+ Kg7
3. e8N+ Kg6
4. Rh6#
if 1. … Kg6
2. Rg8+ Kf6
3. e8N+ Ke7
4. Rxg2 fxg2
5. Kf2
So this line is the most fun with three Knights, but it’s a win.
There are other possibilities, but at least one of the three patterns will work in any case !
Von Janisch 1855.
The authors of these really should be given, it’s common courtesy.
Since black threatens checkmate, every move has to be forcing. That leaves us the knight checks as our best candidates (technically the King could try to escape, but I doubt that’ll lead to any good). Nhf7 seems most promising, allowing the Rook to check the King along h8 and g8. Upon Rg8+, we either win the black Queen in a skewer or we force the black King onto the eighth rank where we can promote with check. At that point we can just bully him with knight and queen checks till he dies.