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White to Play and Win (again)

White to Play and Win (again)

Posers and Puzzles

B
Standard memberBowmann
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RHP IQ

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T
Standard memberThudanBlunder

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FWIW, Grumpy has just finished downloading the necessary 7.61Gb and 1.34Gb tablebases and wants everyone to know it's mate in 16.

BigDogg
Standard memberBigDogg
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Originally posted by Bowmann
[fen]8/8/1q6/2Q5/8/8/p7/k3B1K1 w - - 0 1[/fen]
1.Bc3+ Qb2 2.Bf6! Kb1
2...Qxf6? 3.Qc1#
3.Qf5+ Kc1
3...Qc2 4.Qb5+ Kc1 5.Bg5+ Qd2 (5...Kd1 6.Qf1#) 6.Bxd2+ Kxd2 7.Qb2+ wins
4.Qf1+ Kc2 5.Qf2+ wins the Q and the game.

B
Standard memberBowmann
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Originally posted by ThudanBlunder
FWIW, Grumpy has just finished downloading the necessary 7.61Gb and 1.34Gb tablebases and wants everyone to know it's mate in 16.
That's 895MB and 168MB. Rather small, really.

T
Standard memberThudanBlunder

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Originally posted by Bowmann
That's 895MB and 168MB.
Not according to http://kd.lab.nig.ac.jp/chess/tablebases-online/

B
Standard memberBowmann
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Originally posted by ThudanBlunder
Not according to http://kd.lab.nig.ac.jp/chess/tablebases-online/
B = 8b.

T
Standard memberThudanBlunder

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Originally posted by Bowmann
B = 8b.
Brevity is the soul of wit. 😀

olddog
Subscriberolddog

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Queeny c1+, only one move left, defend with qb1, reply Bc3 - Ohh La La

B
Standard memberBowmann
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Originally posted by olddog
Queeny c1+, only one move left, defend with qb1, reply Bc3 - Ohh La La
Illegal moves are...

...well, illegal.

h
Standard memberhypothetical

Indiana

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Originally posted by Bowmann
Illegal moves are...

...well, illegal.
What's illegal about his moves. Unless the board is flipped. which would make the "legal" moves 1. Qf8+ Qg8 2. Bf6#

Right?

BigDogg
Standard memberBigDogg
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Originally posted by hypothetical
What's illegal about his moves. Unless the board is flipped. which would make the "legal" moves 1. Qf8+ Qg8 2. Bf6#

Right?
Wrong.

h
Standard memberhypothetical

Indiana

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Originally posted by BigDoggProblem
Wrong.
then correct my mistake(s). What am i not seeing?

BigDogg
Standard memberBigDogg
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Originally posted by hypothetical
then correct my mistake(s). What am i not seeing?
Look at the whole board.

h
Standard memberhypothetical

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Originally posted by BigDoggProblem
Look at the whole board.
oops i see it now. sorry about that. 😳 i wasnt paying attention i guess.

S
Standard memberShowdownDan

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Originally posted by Bowmann
[fen]8/8/1q6/2Q5/8/8/p7/k3B1K1[/fen]
Mate in 3

1. Qxb6 a3 or a4
2. Bc3+ Ka2
3. Qb2#

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