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1. Rc8+ Rxc8
2. Na7 (or Nd4)
if 2. … Rc6 3. Nxc6#.
if black moves the rook anywhere on the 8th rank, then 3. Nc6#.
if black moves the rook anywhere on the c file (except c6), then:
3. Nc6+ Rxc6+
4. Kxc6 Ka7
5. Kc7 Ka6
6. b8(=Q) and the game is won.
Rc8+
1. Rc8+! Rxc8
2. Nd4!! does the trick.
White is threatening Nc6 mate.
Black is forced to keep his rook on the ‘c’ file.
2…….. Rc1
3. Nc6+ Rxc6
4. Kxc6 Ka7
5. Kc7
1 – 0
N-C7,RxR N-R6 Mate
Carl. Do you mean a6 instead of R6?
Carl. Do you mean a6 instead of R6?
Rc8
The key thing to note is that the black king is trapped on a single square giving black many stalemate possibilities. For example, if white moves the rook along the 4th rank, black can check from c6, and if white takes the rook, black is stalemated, and if the white king plays to a5, black can draw by taking the pawn at b7. Also, if white tries to move the knight to a3 or d6, Rxc4 draws immediately due to stalemate, or insufficient material. And, finally, 1.Kc5 just draws as black captures at c4 followed by Kb7. With this in mind, the only moves are rook moves along the the c-file, and only one of those is reasonable on it’s face:
1. Rc8!!
The double exclamation is fully supported as you will see:
1. …..Rc8 (only move)
2. Na7
I think Nd4 is sufficient, too- both threaten Nc6 winning the rook if it stays on the c-file, and mating if the rook plays to c6 or along the 8th rank:
2. …..Rc1 (Rd8/e8/f8.. 3.Nc6#)
3. Nc6 Rc6 (only move)
4. Kc6 Ka7 (no stalemate now)
5. Kc7 and the pawn queens to win the game.
1Rc8 rc8 2Na7
1. c8+ rxr
2. a7 …
3. nc6 rxn
4. kxr a7
5. c7
1. c8+ rxr
2. a7 …
3. c6 rxn
4. kxr a7
5. c7
This is a beauty. 1. Nd4 looks attractive (threatening Nc6#), but 2. Rb3+ leaves white with no winning answer.
The solution is to first sac a rook, then threaten mate. 1. Rc8+ R:c8 2. Nd4!! and black is a goner. A typical line is 2…Rc7 3. Nc6+ R:c6 4. K:c6 and the pawn queens.
1.Rc8+ Rxc8 2.Na7 Rc7 (if Black moves his rook off the c file instead, then 3.Nc6++)
3.Nc6+ Rxc6+ 4.Kxc6 Ka7 5.Kc7 Ka6 6.b8=Q Ka5 7.Qb3 Ka6 8.Qb6++
A knight move is pretty obvious, but it has to be the right knight move, the one giving up rook immediately to prevent stalemate:
1. Na7! Rxc4 (otherwise Nc6#)
2. Nc6+ Rxc6
3. Kxc6 Ka7 winning.
Wrong was:
1. Nc7? Ra3! avoiding to take the rook.
2. Na6+ Rxa6
3. Kxa6 stalemate because of the rook on c4.
Nc7 can be countered by Rb3+, 2. Kc6 or Ka6, Rb6+ and White either loses his pawn or is on stalemate
1.Rc8+ Rxc8 (moving the Black rook away from checks)
2.Na7 Rc2 (or whichever move on the c file)
3.Nc6+ Rxc6+ (forcing the exchange)
4.Kxc6 Ka7
5.Kc7 Ka6
6.b8=Q Ka5
Ra4 with the idea of mating with
Ra8.
After Nc7 or Na7 there’s Rb3+ (-> taking the b7)
White wins with
1.Rc8+ Rc8:
2.Na7 Rcx
3.Nc6+ Rc6:
4.Kc6: Ka7
5.Kc7 etc.
Oops!
I underestimated the task of enforced rook sacking here.
Of course it can’t be a knight move at all (Na7? fails to Rb3+).
And sidestepping rook should immediately fail to Rc6+ that white can’t take.
As usual, start with a check, it has to be:
1. Rc8+! Rxc8 (only)
2. Na7! Rc7 (Rc6+ Nxc6#)
3. Nc6+ Rxc6 (only)
4. Kxc6 Ka7 white wins.
1. Rc8+ Rxc8
2. Na7 …
3. Nc6 Rxc6
4. Kxc6 Ka7
5. Kc7
1Rc8+ Rxc8
2Na7 any R move on c file
3Nc6+ Rxc6
4Kxc6 ka7
Kc7 wins.
If R moves along 8th rank on 2nd move
3Nc6#
1.Rc8+ RxR
2.Na7 R to any c file
3.Nc6+ RxN
4.KxR Ka7 forced move
5.Kc7 1-0
R C7
@Carl
1. Nc7 Rb3+
2. Kc6 Rb6+
and so on…
i like Rc8+, RxR; Na7 Rc1; Nc6+, RxN KxR; simple gain the queen.
Mustafiz
1.Rc8 Rc8
2.Na7 Rc2 (or anywhere on c file)
3.Nc6+ Rc6
4.Kc6 Ka7
5.Kc7 Ka6
6.b8=Q Ka5
7.Qb3 Ka6
8.Qa5 (or Qb6)#