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1. Qa8+ Kc7
2. Rc1+ Kxb6
3. Rb1+ Kc6!
4. Bg2+ d5
and black seems safe.
White can thwart the immediate mating threat with Bh3!? But I am not sure of the continuations.
1. Bh3 Rc8 2. Qa8+ Kc7 3. Nd5+ Kc6 4. Qa5 b6 5. Qxb6+ Kxd5 6. Qb3+ Rc4 7. Qxc4#
1. Qh8+ Kf7
2. Rc8+ KXN
3. Rg1+ Kf6 (Not Kf5 or Kf7)
if Kf6 then
4. Bb2+ if Kf5 then Qh7+ wins
if Kd7 then Qxg7+ wins
1. Qh8+ Kf7
2. Rc8+ KXN
3. Rg1+ Kf6 (Not Kf5 or Kf7)
if Kf6 then
4. Bb2+ if Kf5 then Qh7+ wins
if Kd7 then Qxg7+ wins
Bh3
The key move is given by Costin Beju any way.It tries to deflect black Q from guarding b7.
1Bh3 Qxh3
2Qa8+ Kc7
3a5+ Kb4
4Qxb7+ Kxa5
5Ra1#
If black makes any neutral move 2Rc1 seals the fate.
1… Bd3 2Qa8+ Kc7 3Qa7 and all is over.
1 Bh3,Qxh3 2.Qa8+,Kc7 3. Rf7+ Kxb6 4.Qxb7+ mate.
Hi Susan Polgar,
Well,interesting puzzle.
White wins the game [ Variations exist ]
Example One
===========
1.Qa8+ Kc7
2.Nd5+ Kc6
3.Nb4+ Kc5
4.Qa5++ Mate
Example Two
===========
1.Qa8+ Kc7
2.Nd5+ Kd7
3.Q*b7+ Ke8
4.Nf6+ B*Nf6
5.R*Be2+ Be5
6.Qc6+ Kf8
7.Rf2+ Bf4
8.Be2 d5
9.Bf3 g4
10.B*d5 Kg7
11.Qb7+ Kf8
12.Qb4+ Kg7
13.Q*d4+ Kf8
14.Q*Bf4+ Kg7
15.Qf7+ Kh6
16.Rh2+ Kg5
17.Qf4++ Mate
White wins the game [ Variations exist ]
By
Venky [ India – Chennai ]
1.Bh3
if the Q takes the B then
1 Bh3 Qxe3
2 Qa8+ Kc7
3 Rf7+ Rd7
4 Rxd7+ Kxb6 or Kc6
5 Qxb7+ Kc5
6 Rc1++
if no 3… Rd7 then same finish
if black doesn’t take the bishop then white can take the bishop on e2 with forced checkmate on black to follow due to being able to bring the extra rook into the attack
e.g
1 Bh3 g4
2 RxB
and threat of
3 Qa8+ Kc7
4 Rc1+ KxN
5 Rb2++
is too strong
e.g 2…. Kc7 3 Rc1+ Kb8 4 Qa8++
or 3…. KxN 4 Rb2++
or 2…. d5 3 RxB pxB 4 Qa8+ Kc7
5 Rc8+ Kd6 6 Rxd5+ leading to Black losing Q or rook
if Black tries to move the bishop to help defend instead then
1 Bh3 Bf3
2 Qa8+ Kc7
3 Rc1+ Bc6
4 RxB
if .. b7xR 5 Qa7++
if .. KxR
then 5 Bg2+ Kc7 6 Qxb7++
or 5 Bg2+ d5 6 Bxd5+ Kc7 7 Qxb7++
or 5 Bg2+ d5 6 Bxd5+ KxN 7 Rb2+ Kc7 8 QxB7++ or if 7… Kc5 8 qa5++