White to move. What is the absolute best continuation for White?
1q3b1r/k7/p2r4/3Qp1n1/2P1B1p1/1PB5/5P1p/R4K2 w – – 0 1
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1. Qc5+
1. … Rb6
2. Rxa6+ Kxa6
3. Qa5#
1. … Qb6
2. Rxa6+ Kxa6
3. Qa3+Qa5
4. Qxa5#
1.Qc5 Qb6
(1…. Rb6 2.Rxa6 Kxa6 3.Qa5)
2.Rxa6 Kxa6
(2…. Kb8 3.Ra8)
3.Qc8 Ka7
4.Qa8
If the Rd6 were not there, 1. Rxa6+ Kxa6 (1…Kb6 2. Qc5#) 2. Qa5 is mate, so we need to make sure that a6 is recaptured by the King and no other piece.
That leads to 1. Qc5+! Now,
1…Rb6 2. Rxa6+ Kxa6 3. Qa5/Qa3#
1…Qb6 2. Rxa6+ Kxa6 3. Qa3+ Qa5 5. Qxa5#
A problem-like combination with reversal between the try and key.
Qc5+
Ra6
1. Qc5+ Rb6, Rxa6+ Kxc6, Qa5+ 1-0.
2. Qc5+ Qb6, Rxa6+ Kxc6, Qa3+ Qa5, Qxa5+ 1-0.
1. Qc5+ …
if
1. … Rb6
2. Rxa6+ Kxa6
3. Qa5 mate
if
1. … Qb6
2. Rxa6+ Kxa6
3. Qc8+ Ka7
4. Qa8 mate
Qc5+ Qb6/Rb6 (forced)
Rxa6+ Kxa6 (also forced)
Qa3+ Qa5
Qxa5#
1. Qc5+ Qb6
2. Rxa6+ Kxa6
3. qa3+
if
1. Rb6
2. Rxa6+ Kxa6
3. Qa3/a5 #
every body is mentioning Qc5 which looses to Qb6.
the solution is:
Rxa6+ Rxa6
Qd7 and now either (Kb6 Qc5 mate)or Qb7 Qxb7 mate
This comment has been removed by the author.
@Anonymous 12:56
1. Qc5 will not lose to 1…Qb6. 2. Rxa6+ Kxa6 (Q is pinned) 3. Qa3+ checkmates.
After 1. Rxa6+ Rxa6 2. Qd7+ Kb6, WQ cannot move to c5, unfortunately (unless he rides a Knight :)); so, having lost a Rook, his best bet is a perpetual check by 3. Qc6+ Ka7 4. Qd7+
Everybody is mentioning Qc5+ because that is the solution.
1. Rxa6+ Rxa6
2. Qd7+ Kb6
3. Qc6+ Ka7 (Qc5 is not a valid move)
…results in a draw by repetition
And to the one who mentioned Ra3…
1. Ra3 Rxd5
2. Bxd5 Bxa3
…and you’re down a queen
1. Qc5+
1. … Rb6
2. Rxa6+ Kxa6
3. Qa5++
1. Qb6
(1…. Rb6 2.Rxa6 Kxa6 3.Qa5)
2.Rxa6 Kxa6
(2…. Kb8 3.Ra8)
3.Qc8 Ka7
4.Qa8++
TGIF chess tactic