The Winning Move

A game from mine. Your winning, finish him off!

1 b4 also works....

it doesn't cus he moves his other rook.

I dont understand, what does b4 allow that b3 prevents?

 axb4?

 If axb4 then the same mate is possible as in the puzzle...

its not forced mate, but b3 ATTACKS THE ROOK. it either wins the rook for like a pawn or its mate, or something like that.

Yeah, but the question is, why doesn't b4 work?

ohright, im sure you know. were you just answering it for other people?

b4 doesn't work because you just move the other rook, the rook on f5 to b5 (its quite forced!).

nice

Actually, thers is no mate in 3.

b3 fails to Rg5, Rb4, Rc4, and Raf4

There are 4 solutions for mate in 4, here they are in full:

Solution: 1. Bd4! [2. Rg7+
    2. ... Rg5 3. Rxg5#]
 1. ... Rd5 2. Rf7 [3. Rf4, f3#]
    2. ... Rf5 3. Rg7+
 1. ... Rc5 2. Rf7 [3. Rf4, f3#]
    2. ... Rf5 3. Rg7+
 1. ... Rb5 2. Rf7 [3. Rf4, f3#]
    2. ... Rf5 3. Rg7+
 1. ... Rf6 2. Re5 [3. Rg5#]
 1. ... Rf8 2. Re5 [3. Rg5#]
 1. ... Rg5 2. Rf7 [3. Rf4, f3#]
    2. ... Rf5 3. Rg7+
 1. ... Rf4 2. Re5 [3. Rg5#]
 1. ... Rf3 2. Re5 [3. Rg5#]
    2. ... Rxg3+ 3. fxg3 ad lib 4. Rg5#
 
Solution: 1. Bc3! [2. Rg7+
    2. ... Rg5 3. Rxg5#]
 1. ... Rc5 2. Rf7 [3. f3#]
    2. ... Rf5 3. Rg7+
    2. ... Rxc3 3. bxc3 [4. f3#]
 1. ... Rb5 2. Rf7 [3. f3#]
    2. ... Rf5 3. Rg7+
 1. ... Rf6 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rf8 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rg5 2. Rf7 [3. f3#]
    2. ... Rf5 3. Rg7+
 1. ... Rff4 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rf3 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxg3+ 3. fxg3 ad lib 4. Rg5#
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 
Solution: 1. Bh8! [2. Rg7+
    2. ... Rg5 3. Rxg5#]
 1. ... Rb5 2. Rd6 [3. Rg6+
       3. ... Rg5, Kf5 4. R(x)g5#
                    3. f3+
       3. ... Kf5 4. Rf7, Rf6#]
    2. ... Rg5 3. f3+
    2. ... Rb3 3. Rg6+
    2. ... Rxb2 3. Rg6+
    2. ... Rf4 3. Rg6+
    2. ... Kf5 3. Rf7+
    2. ... Kf5 3. Rf6+
 1. ... Rf6 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rf8 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rg5 2. Rf7 [3. f3#]
    2. ... Rf5 3. Rg7+
 1. ... Rff4 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rf3 2. Re5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxg3+ 3. fxg3 ad lib 4. Rg5#
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 
Solution: 1. Rde2! [2. R7e6 [3. Rg6+
       3. ... Rg5 4. Rxg5#]
    2. ... Rf6 3. Rxf6 [4. f3#]
       3. ... Rf4 4. Rxf4#
    2. ... Rf7 3. Rg6+
       3. ... Kf5 4. Rg5#
    2. ... Rf8 3. Rg6+
       3. ... Kf5 4. Rg5#
    2. ... Rg5 3. f3+
       3. ... Kf5 4. Rf6, R2e5#
    2. ... Rff4 3. Rg6+
       3. ... Kf5 4. Rg5#
    2. ... Rf3 3. Rg6+
       3. ... Kf5 4. Rg5#
    2. ... Rxf2+ 3. Rxf2 [4. Rg6#]
       3. ... Rf4 4. Rxf4#
    2. ... Rb4 3. Rg6+
       3. ... Rg5 4. Rxg5#
    2. ... Rc4 3. Rg6+
       3. ... Rf5~ 4. Rxg5#
    2. ... Rd4 3. Rg6+
       3. ... Rf5~ 4. Rxg5#
    2. ... Raf4 3. Rg6+
       3. ... Rf5~ 4. Rxg5#
                       2. R2e4+
    2. ... Rf4 3. R7e5 ad lib 4. Rg5, f3#
    2. ... Rxe4 3. Rxe4+
       3. ... Rf4 4. Rxf4#]
 1. ... Rf6 2. R7e5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rf8 2. R7e5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rff4 2. R7e5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rf3 2. R7e5 [3. Rg5#]
    2. ... Rf5 3. f3+
    2. ... Rxg3+ 3. fxg3 ad lib 4. Rg5#
    2. ... Rxf2+ 3. Rxf2 ad lib 4. Rg5#
 1. ... Rxf2+ 2. Rxf2 [3. Re6 [4. Rg6#]
       3. ... Rf4 4. Rxf4#
                       3. Re5 ad lib 4. Rg5#
                       3. Bh6 [4. Rg7#]
       3. ... Rf4 4. Rxf4#
                       3. Bf6 [4. Rg7#]
       3. ... Rf4 4. Rxf4#
                       3. Be5 [4. Rg7#]
       3. ... Rf4 4. Rxf4#
                       3. Bd4 ad lib 4. Rg7, Re4, Rf4#
                       3. Bc3 [4. Rg7#]
       3. ... Rf4 4. Rxf4#
                       3. Bf8 [4. Rg7#]
       3. ... Rf4 4. Rxf4#
                       3. Bh8 [4. Rg7#]
       3. ... Rf4 4. Rxf4#]
 1. ... Raf4 2. R2e4 [3. f3#]
    2. ... Rf6 3. R7e5 ad lib 4. Rg5, f3#
    2. ... Rf8 3. R7e5 ad lib 4. Rg5, f3#
    2. ... Rxe4 3. Rxe4+

woah yes your right! but i didn't see that! =) ingenious. Bd4 allowing 2 possible checkmate squares =).

on the other hand, its just a normal game, i didn't really EVER think there would be a puzzle in my game lol. i was just looking at a simple winning move =) thanks alot for the mate in 4s though.

i don't really understand all that chunk though, and what happens after "Rd5" if you play Rde2?

can you please put it into a diagram, instead of putting it into one of those mating programs =P

aaah very nice =)