White to move. How should White proceed?
2r3k1/5p2/4P1pQ/1p1bR2p/1q6/p3R3/B2p1Pr1/5K2 w – – 0 1
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Rxd5
exf7 followed by Re8 (1-0)
well, it seems to be one of those check as check can puzzles, as black can mate next move. so let´s go ahead:
1. exf7+ Bxf7
2. Bxf7+ Kxf7
3. Qh7+ Kf6
4. Re6+ Kf5
5. Qf7+ Kg5
6. Qxg6+ Kf4
7. Rf6#
6. … Kh4
7. Qf6+ Kg4
8. Rg5+ Kh4
9. Rg3#
7. … Rg5
8. R6e4+ Qxe4
9. Rxe4+ Kh3
10. Qf3+ Kh2
11. Rh4#
10. … Rg3
11. Qh1#
5. … Kg4
6. Rxg6+ Kh4
7. Qf6#
4. … Kg5
5. Qxg6+ Kf4
6. Rf6#
5. … Kh4
6. Qf6+ Kg4
7. Rg5+ Kh4
8. Rxg2#
6. … Rg5
7. R6e4+ Qxe4
8. Rxe4+ Kh3
9. Qf3+ Kh2
10. Rh4#
9. … Rg3
10. Qh1#
3. … Kf8
4. Rf3+ Qf4
5. Rxf4#
1. … Kxf7
2. Bxd5+ Kf6
3. Re6+ Kf5
4. R3e5+ Kg4
5. Qg5+ Kh3
6. Qxg2+ Kh4
7. Qg3#
6. … Kh2
7. Qxg2#
3. … Kf7
4. Rxg6#
wow, that was more work than i thought it would be! Jan
1.Rxd5
1.exf7+ Bxf7 2.Bxf7+ Kxf7 3.Qh7+ Kf6 4.Re6+ Kf5 5.Qf7+ Kg4 .. King is trapped and soon mate will follow or at least material advantage…
Hopefully i am correct.
1. exf7+ Bxf7
2. Re8+ RxR
3. RxR#
If 1…Kxf7
2. Rf3+ BxB#
1.exf7+! Bxf7 2.Re8+! Rxe8 3. Rxe8+! and the bishop is pinned and mate to follow
Very simple i guess …..
1.exf7+ Bxf7
Check+ is the only solution.
1ef+ Bxf7 2 Re8+ Rxe8 3 Rxe8X
Olimat
Two moves suggest themselves immediately- Rd5 and ef7. I prefer the latter since it is a forced mate:
1. ef7 Bf7 (Kf7 see below)
2. Re8 Qf8 (Re8 3.Re8 Qf8 4.Rf8#)
3. Bf7 Kf7
4. Qf8#
As for Rd5:
1. Rd5 Rc1 (what else is there?)
2. Kg2 Qg4
3. Rg3 Qe4
4. Rf3 Qg4 with a draw by perpetual at the very least, and I might well have missed a win for black in this line since I haven’t spent more than a minute or two studying this line (I don’ think I did, but I am not 100% sure of it).
Dxf7 Bxf7
Bxf7 Kxf7
Rd7+
This is yet another “Forced save problem” R:d5 is not good enough.
e#fy with the double check on e8 and the pin on the a2-g8 diagonal solves it easily.
Remember..although r:d5 looks nice…Rc1 # AND qG4 # AFTER THAT WIPES WHITE OUT. White wins with the simple e:f7#
MM
1. e6xf7+
If 1. … Kg8xf7 2. Ba2xd5+ gives White a clear advantage.
If 1. … Bd5xf7 2. Re5-e8+ with the Black bishop pinned on f7
–br
Variation #1a
1. exf7+ Bxf7 2. Re8+ Qf8
3.Qxf8+ Kh7 4. Qh8#
Variation #1b
1. exf7+ Bxf7 2. Re8+ Rxe8 3.Rxe8+ Qf8 4. Rxf8#
Variation #2a
1. exf7+ Kxf7 2. Rf5+ gxf5
3. Bxd5#
Variation #2b
1. exf7+ Kxf7 2. Rf5+ Kg8
3. Bxd5#
The problem with 1.Rxd5 is that there is no clear win after Rxf2+
Pawn takes on f7 with the idea of following it with Re8+. This forces black into losing its queen and then eventually the game.
1.exf7+ then
if 1…Kxf7
2.Rf3+ Kg8
3.Bxc5#
if 1…Bxf7
2.Rd8+
if 2…Rxd8
3.Rxd8+ Qf8
4.Rxf8#
if 2…Qf8
3.Qxf8+ Kh7
4.Qh8#
exf mate in 4
1. exf7+ of course. The rest is easy.
1.e6xf7+,kXf7
2.Bxd5+,Kf6
3.Re6+,Kf7 or Kf5
4.Rf3+,Qf4
5.Rxf4 mate
1.e6xf7+ Kxf7 (Bxf7 leads to quick finish)
2.BxB5+ Kf6
3.Re5-e6+ Kf5
4.Rf3+ Qf4
5.Rf3xf4#
1.exf7+, Kxf7
2.Bxe5+, Kf6
3.Re6+, Kf7 or Kf6
(3…kf7, 4.Rf3+, black can put Qf4 but Rxf4+ still leads to main variation,4..Qg8, 5.either Re8 mate or Rxg6 mate.
3…Kf6,4.Rf3+,Qf4.5.Rxf4 mate
1.exf7+ Bxf7 ( …kxf7 is no better )
2. Re8+ Rxe8
3.Rxe8+ Qf8
4. Qxf8+ Kg2
5.Qh8#
1.exf7+ then the rest is easy.., Kf7
2.Bxd5+, Kf6
3.Re6+. either Kf7 or Kf5( 3…Kf7 4.Rf3+,Qf4 4.Rf4+,Kg8 then 5.Re8 or Rxg6 mate), (3…Kf5 4.Rf3+,Qf4 5.Rxf4 mate)
1. f7+ Bxf7
2. Bxf7+ Kxf7
3. Qh7 + leads to mate
Isidoro
1. ef +
1. exf7+ Bxf7 (forced) 2.Re8+ mates (N.B.: Bf7 can’t capture becasue of Bb3)
The 2 most interesting lines are:
1. exf7+ Bxf7 2. Re8+ Rxe8
3. Rxe8+ Qf8 4. Rxf8#
1. exf7+ Kxf7 2. Rf5+ gxf5
3. Bxd5#
1. exf7+
1..Kxf7 2. Rf3+ Kg8 3. Bxd5#
1..Bxf7 2. Re8+ Rxe8 3. Rxe8+ Qf8 4. Rxf8#
From spain…
1)ef7+,Bf7
2)Re8+,Re8
3)Re8+,Qf8
4)Rf8++
1)ef7+,Kf7
2)Rf3+,Kg8
3)Bd5++
Tours regards
1)e.f7+ K.f7 2) B.d5+ +/-
1)e.f7+ B.f7 2) Rd8+ R.d8 3) Rd8#
i think the best line for white is
1) exf7+, Bxf7
2) Bxf7+, Kxf7
3) Rf3++