This is nice one. First, you have to think how to checkmate black. I thought it could be via bishop on b2 or queen on c1 supporting by white king on d2. So i found a working line.
1. Bf5!! (prevents f5) f6
2. Ba3 fxe5
3. Be4! fxd4
4. Bc3 dxc3
5. bxc3 b2 check
6. Bxb2#
Almost but not quite a mate in 6 is the line:
1. Bf5 f6 2. Bg7 fe5 3. Be4 ed4 4. Bd3 dc3 5. Bc2 cxb2 6. Bxb2#
but black can extend things in this line with 5. … bxc2 6. Kxc2 cxb2 7. Bxb2#
I’m surprised the brainstorming is so indecisive this time. It seems to me there
is no mate in 6 after 1. Bf5. But after 1. Be6 it is quite forced and clean in 6:
You missed important line: 1. Be6 f6. And whites plans to mate in 6 collapses. Also there are more alternative sublines after 1. Be6 f6 and complicates white’s task a lot. Why my line is not working? only mistake is that instead of 4. Bc3 should be 4. Bd3.
This is nice one. First, you have to think how to checkmate black. I thought it could be via bishop on b2 or queen on c1 supporting by white king on d2. So i found a working line.
1. Bf5!! (prevents f5) f6
2. Ba3 fxe5
3. Be4! fxd4
4. Bc3 dxc3
5. bxc3 b2 check
6. Bxb2#
Almost but not quite a mate in 6 is the line:
1. Bf5 f6 2. Bg7 fe5 3. Be4 ed4 4. Bd3 dc3 5. Bc2 cxb2 6. Bxb2#
but black can extend things in this line with 5. … bxc2 6. Kxc2 cxb2 7. Bxb2#
At first glance it seems 5. Bh7 might do it. Too late in the night to check it out.
5. Bh7 c2 6. Bxc2 bxc2 7. b3#
5. Bh7 c2
6. Bxb2#
Or
5. Bh7 cxb2
6. Bxb2#
What am I missing ?
5. Bh7 c2 6. Bxb2# – b2 is a white pawn!
How stupid of me to forget that. 🙁
Better is Ba3 forcing f5 then e4 Kc2 ensures white queens and traps black king
I’m surprised the brainstorming is so indecisive this time. It seems to me there
is no mate in 6 after 1. Bf5. But after 1. Be6 it is quite forced and clean in 6:
1. Be6 fxe6 2. d5 exd5 3. c4 dxc4 4. Ba3 c3 5. bxc3 b2+ 6. Bxb2#
the only sideline is
1. Be6 f5 2. Bxb3 f4 3. Ba3 f3 4. Bd1 f2 5. b3 f1QRNB 6. Bb2#
All moves seem forced. Right?
You missed important line: 1. Be6 f6. And whites plans to mate in 6 collapses. Also there are more alternative sublines after 1. Be6 f6 and complicates white’s task a lot. Why my line is not working? only mistake is that instead of 4. Bc3 should be 4. Bd3.
Yes, the typo is the only error. This puzzle has been posted here before at least a couple of times.