White to move. How should White proceed?
2r5/k1P3R1/p1Kp3p/P1nBp1n1/1R2P3/3p4/8/5r2 w – – 0 1
Chess Daily News from Susan Polgar
Overnight chess tactic
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White to move. How should White proceed?
2r5/k1P3R1/p1Kp3p/P1nBp1n1/1R2P3/3p4/8/5r2 w – – 0 1
1. Rb8!
The rook is immune due to
1 ..Rxb8???
2. c8=N+!
1.Rb8 Rxb8 2.c8(N)+ Ka8 3.Ra7#
I have an idea. Rb8 looks like the best try, because of a nice trick: …Rxb8; c7-c8=N+ with double check, forcing Ka8; Nb6+, Rb8xb6; Kxb6+, Nb7; Bxb7+, Kb8; Rg8++. So Black can’t take the rook on b8, and thus black’s rook is lost and white mates in a couple of moves.
rb8 rxr
c8Kn+ ka8
ra7++
i like the idea of
1. Rb8, with the threat of 2. Ra8+ and mate:
2. … Kxa8
3. Kb6+ Nb7
4. Bxb7#
2. … Rxa8
3. c8N+ Nb7
4. Rxb7#
if
1. … Rxb8,
2. c8N+ Ka8
3. Ra7#
Hi Susan Polgar,
Ref:”Overnight chess tactic”[White’s move]
Sub:White wins the game.
Well,the puzzle fairly simple but interesting combination exist.
I will give three examples for White’s win,started from simple to best example.
Example one
============
1.Rb8 R*Rb8
2.c8(Q)+ Ka8
3.Qa6++ Mate
White wins the game : 1- 0
Example two
===========
1.Rb8 d2
2.R*Rc8 d1(Q)
3.Ra8+ K*Ra8
4.c8(Q)++ Mate
White wins the game : 1- 0
Example three
=============
1.Rb8 Rf8
2.K*d6 N*e4+
3.K*e5 Re8+
4.Kd4 Nb3+
5.B*Nb3 d2
6.Bd5 d1(Q)
7.Ra8+ R*Ra8
8.c8(Q)++ Mate
White wins the game: 1- 0
By
Venky[Chennai – India]
From Spain…
1)Rb8,Rb8
2)c8=N+,Ka8
3)Ra7++
1)Rb8,Rff8
2)Ra8+,Ra8
3)c8=Q+,Rf7
4)Rf7+,Nf7
5)Qc7+,Nb7
6)Qb7++
1)Rb8,Rc7+
2)Kc7,Nge6+
3)Kc8+,Ng7
4)Ra8++
Greetings from Spain
Hi!
I have looked this puzzle, and I think it is not so easy, but here is my solution:
1, Kxd6 d2
2, Kxc5 d1=Q
3, Rb7+ Ka8
4, Rb8+ Ka7
5, Ra8+ Rxa8
6, c8=Q+ Rf7
7, Qb7+ Rxb7
8, Rxb7#
White appears to win with
(A)
1.Rb8 (with the threat of Rxc1). For 1….Rf1-f8 see (B). If
1…Rxb1 then
2.c8=N (Double check) Ka8
3.Ra7 mate.
Instead of 1…Rxb1, Black can play
(B)
1…Rf1-f8 then
2.Ra8+ Kxa8 (For 2…Rxa8 see (C)
3.Kb6+ Nb7
4.Bxb7 mate.
(C)
In (B) Black can play
2…Rxa8
3.c8=Queen+ Nf7
4.Qc7+ Nb7
5.Bxb7 mate.
If there is another defence, I’m not seeing it.
1.Rb8 Rf8
2.Ra8+ and mate 2 follow…
1.Rb8 sets many deadly threats including 2.Ra8+! and if 1…Rxb8 2.c8/N++ and mate
1.Rb8! Rff8 (1…Rxb8 2.c8=N ch Ka8 3.Ra7# 1-0) 2.Ra8 ch! Rxa8 (2…Kxa8 3.Kb6 ch Nb7 4.Bxb7# 1-0) 3.c8=Q ch Rf7 4.Rxf7 Nxf7 5.Qc7 ch Nb7 6.Qxb7# 1-0……or 1.Rb8! Rxc7 ch 2.Kxc7 Nge6 ch (2…Rf7 ch 3.Rxf7 Nxf7 4.Ra8# 1-0) 3.Kc8 ch Nxg7 4.Ra8# 1-0
1.Rb8! Rff8 (1…Rxb8 2.c8=N ch Ka8 3.Ra7# 1-0) 2.Ra8 ch! Rxa8 (2…Kxa8 3.Kb6 ch Nb7 4.Bxb7# 1-0) 3.c8=Q ch Rf7 4.Rxf7 Nxf7 5.Qc7 ch Nb7 6.Qxb7# 1-0……or 1.Rb8! Rxc7 ch 2.Kxc7 Nge6 ch (2…Rf7 ch 3.Rxf7 Nxf7 4.Ra8# 1-0) 3.Kc8 ch Nxg7 4.Ra8# 1-0
I think different:
1.Rb8 Rxb8
and now
2.Nc8! checkmate
1.Rb8
if 1. .. RxR then 2.c8=Q+ wins
if 1. .. d2 then 2.RxR 3.Ra8+ 4.c8=Q#
1. .. Rf8 2.Ra8+
if 2. .. KxR then 3.Kb6+ wins
if 2. .. RxR then 3.c8=Q+ wins
I spent a few minutes trying to make Rb7 work, but it just doesn’t:
1. Rb7 Nb7
2. Kd7 Nc5
And now Kc8 is met by Rf8#. There were no other viable second move alternatives for white either. Before moving on to my second idea, I will just point out:
1. Kd6 Nge4
2. Ke5 Nf6
3. Rd4 Ne8
4. Rh7 Re1
5. Kf4 Rc7
6. Rh6 Rg7
Looks hopeless for white.
The other move that immediately caught my eye was
1. Rb8 Rb8 (alternatives below)
And here was the move that took me a few minutes to find (I kept trying to make cb8(Q) or c8(Q) work):
2. c8(N) Ka8 (was double check!)
3. Ra7#
At move 1, none of the alternatives I have looked at hold for black:
1. …..Rc7
2. Kc7 and the threat of Ra8# can only be delayed by moves like Rf8, Rf7, Nb7, or Nce6. Or
1. …..Rc1 (threatens Nce4)
2. Kd6 Nce4 (alternatives below)
3. Ke5 Nf3 (c7 made immune by Ra8)
4. Kf4 and black is out of checks and must start sacrificing material to just delay the coming mate. At move two in this line
2. …..Nge4
3. Ke5 and the sacrificing of material to delay mate starts now. Of course, moves like 2. …Nb7 or Nf7 start the material sacrifices immediately.
Back at move 1:
1. …..Na4
2. Rc8 Rc1
3. Kd6 and the threat of Ra8 wins again.
Underpromotions with check are a move you should always keep in mind- you never know when they might be useful.