White to move.  No computer analysis please. This is another good one 🙂
6k1/7p/7b/p4Nq1/1B6/4R3/2P3P1/5K2 w – – 0 1
Troitzky 1898
Daily Chess Improvement: Classic Tactic!
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White to move.  No computer analysis please. This is another good one 🙂
6k1/7p/7b/p4Nq1/1B6/4R3/2P3P1/5K2 w – – 0 1
Troitzky 1898
Re8 Nd7 Bc3 Rg8 Ba5
You will have to try again.
I won’t give the solution. I have solved it recently when Yancey gave it to me.
Puzzles for Alena or any who wish to solve them:
1K6/p2p4/kpR1R3/8/rP6/8/1P6/8 w Tarasyuk 1990 White to move and win.
rqr1n1k1/1b1n1pbp/2pp2p1/N7/NP2P3/6P1/2Q2PBP/1RBR2K1 w – – 0 1 What should white play here?
3B1rk1/8/4P3/3K4/4n3/8/8/8 w Kasparian 1936 White to move and draw. Of course, the first move is easy, but after that not so easy.
Finally, N5b1/2p5/3k2B1/8/5K2/7N/8/8 w Liburkin 1931 White to move and win.
Here is the solution for the first puzzle.
V-1
1. Re5 dxc6
2. b5+ Ka5
3. bxc6+ b5
4. c7 Rc4
5. c8=Q Rxc8+
6. Kxc8 Kb4
7. Kb7 a5
8. Kb6 Kc4
9. Rxb5 a4
10. Ka5 Kd3
11. Kxa4
It was an easy variation.
V-2
1. Re5 Rxb4
2. Rc7 b5
3. Rxa7+ Kb6
4. Rxd7 Rxb2
5. Rd6+ Ka5
6. Ka7 Rh2
7. Ra6+ Kb4
8. Rb6 Rh7+
9. Ka6 Kc4
10. Rbxb5
I know It’s a winning position but it remains very tough to win. I don’t know the exact method of winning. I understand that I need to exchange rooks. I will study the position with the help of Nalimov tablebases.
It really isn’t hard to win from 10.Rbb5, but I would have chosen 10.Re4+ Kd3 11.Rg4 b4 12.Rbb4. The way to force the exchange of a rook pair here is to drive the king to the edge (in this case the 1st rank) and threaten mate- eventually the black rook will have to be used to interpose and can then be exchanged off.
Reference for the first time this puzzle appeared here: Link
It seems to me that there are two strongest moves (Bf4 and Bh3) for the second puzzle, but in my opinion the best move is Bh3.
For example
1. Bh3 Nef6
2. Nxb7 Qxb7
3. Rxd6 Rd8
4. Bg5 h6
5. Bxd7 hxg5
6. Bxc6 Qe7
7. Rxd8+ Rxd8
8. Qe2 Rb8
9. b5 Nd7
10. b6 Ne5
11. Bd5 g4
12. Kg2
White is two pawns up. I’m not sure how to win it.
Reference for when this puzzle first appeared here: Link
Here is the solution for the third puzzle.
V-1
1. e7 Nf6+
2. Ke6 Rf7
3. Bb6 Ne8
4. Kd7 Ng7
5. Bd4 Nf5
6. Bf6 Nxe7
7. Bxe7 Rf1
V-2
1. e7 Nf6+
2. Ke6 Rf7
3. Bb6 Kg7
4. Bd4 Kg6
5. Bxf6 Rxf6+
6. Ke5 Rf5+
7. Ke4 Kf7
8. Kxf5
V-3
1. e7 Nf6+
2. Ke6 Rf7
3. Bb6 Rg7
4. Kxf6
Reference to a previous appearance of this puzzle on Susan’s site: Link. However, with it being a 6 man problem, you can check it with the online Nalimov Tablebase these days.
Here is the solution for the fourth puzzle.
1. Ng5 Bc4
2. Ke3 Bb3
3. Kd4 c5+
4. Kc3 Bg8
5. Nb6 Kc6
6. Na4 Bd5
7. Ne4 c4
8. Nb2 Bg8
9. Nd2 Bd5
10. Ndxc4 Kc7
It’s a winning position but I wouldn’t win it.
The first move is wrong:
1. Ng5? Kc6!!
And the knight at a8 can no longer be saved since 2.Be4 is now met with Bd5 and white can’t exchange bishop for bishop without ending up in the drawn 2N+K vs K ending. The move Kc6 is the critical move you have to find a way to overcome, especially its combination with black playing Bd5 either before or after the check from e4.
It is enough to reduce this to a position where white frees the knight from the corner successfully.
Yesterday I thought about Ng5 and Nf2.
1. Nf2 Bd5
2. Ne4+ Kc6
3. Nf6 Bc4
4. Be4+ Kc5
5. Nxc7
Here is the first time it appeared here on Polgar’s site: Link.
You might want to think about all the other alternatives black had at moves 2 and 3, but you have the key idea solved.
1Rg3 qxr 2 N h6 ch. Kh8.3 Bd6 any move.4Be5 ch and Knight ch forks the queen. UNIQE. Troitzky.