It’s late and I’m tired, but I’m pretty sure it’s 1. Bc6+, leading to 2. Rd4+ and 3. Re4+, when the Bishop is covering the e4 square and White picks up both pawns.
1. Bc6+ If 1….Kc8 then 2. Rf8++ If 1. …Kd8 2. Rf8+ Ke7 3. Re8+ winning (taking both black pawns) If 1… Ke7/e6 2. Re4+ winning If 1… Kd6 2. Rd4+ Ke5/6/7/ 3. Re4+ winning
Bf5+, and black tries to avoid the pawn file as long as he can, with Kd6 or d8, but Rd4+ drives black to the e file and Re4+ gains the e3 pawn for the bishop and the e2 pawn gets gobbled immediately after promotion.
My solution here was 1. Bc6+ with exactly the same idea and same lines that Anand Gautam gives, plus the line 1. … Kc8 2. Rf8# White should kill the pawns and be up with R+B.
The A.G. alternative is: 1. Bf5+ Kd6 2. Rd4+ Ke5 3. Re4+ Kxf5 4. Rxe3 This drops the bishop, but I wasn’t able to find it directly erroneous.
Thanks to several people for pointing out the stalemate trap. The correct solution is Bf5+, although I must admit I had not seen all the lines and stalemates. It was more of an instinctive choice.
It’s late and I’m tired, but I’m pretty sure it’s 1. Bc6+, leading to 2. Rd4+ and 3. Re4+, when the Bishop is covering the e4 square and White picks up both pawns.
1. Bc6+
If 1….Kc8 then
2. Rf8++
If 1. …Kd8
2. Rf8+ Ke7
3. Re8+ winning (taking both black pawns)
If 1… Ke7/e6
2. Re4+ winning
If 1… Kd6
2. Rd4+ Ke5/6/7/
3. Re4+ winning
The key is to get the Black king on the e-file so that White rook can give a check and capture the 6th rank pawn, and cover the 7th rank pawn as well!
1. Bf5+ Kd6/Kd8 (to avoid e file)
2. Rd4+ Ke5/Ke7/Ke8 (forced to come to e file now)
3. Re4+ 1-0
Bf5+, and black tries to avoid the pawn file as long as he can, with Kd6 or d8, but Rd4+ drives black to the e file and Re4+ gains the e3 pawn for the bishop and the e2 pawn gets gobbled immediately after promotion.
1. Bc6+ Kd6 (1. …Kd8? 2. Re4 e1Q 3. Re8#; 1. … Ke7/e6 2. Re4+ Kf6 3. Rxe3 etc.) 2. Rd4 Ke7/e6/e5 3. Re4+ Kf6/f5 4. Rxe3 1-0
1Bc6 wins
@Anand Gautam:
1.Bf5+
On the other hand, 1.♗c6+ leads to stalemate:
1. ♗c6+ ♚d6
2. ♖d4+ ♚e6
3. ♖e4+ ♚d6
4. ♖xe3 e1=♛
5. ♖xe1 stalemate.
what if 3. ….. kd8 if you take the pawn with rook it is stalemate
Oh neat.. key Bd7 🙂
Reti produced some classics!
White must avoid stalemate traps. If 1. Bc6+? Kd6 2. Rd4+ Ke6 3. Re4+ Kd6 4. Rxe3 e1=Q 5. Rxe1, black is stalemeted. Therefore:
1. Bf5+! Kd8 2. Rd4+ Ke7 3. Re4+ Kd8.
If now 4. Rxe3? e1=Q 5. Rxe1, black is once again stalemated. But…
4. Bd7!! e1=Q (or 4…Kxd7 5. Rxe3 +-) 5. Bb5! and the threat 6. Re8# is decisive (1-0)
My solution here was
1. Bc6+
with exactly the same idea and same lines that Anand Gautam gives, plus the line
1. … Kc8
2. Rf8#
White should kill the pawns and be up with R+B.
The A.G. alternative is:
1. Bf5+ Kd6
2. Rd4+ Ke5
3. Re4+ Kxf5
4. Rxe3
This drops the bishop, but I wasn’t able to find it directly erroneous.
1. Bc6 should win it. The aim is getting rook on e file with a check getting 2 pawns!! If not there is always a mating threat in last few ranks!!
Thanks to several people for pointing out the stalemate trap.
The correct solution is Bf5+, although I must admit I had not seen all the lines and stalemates. It was more of an instinctive choice.