#### Posers and Puzzles

David113
Posers and Puzzles 25 Dec '06 15:10
1. 25 Dec '06 15:10

What was the first move of the missing white rook?
What was the last move of that rook?
2. Mathurine
sorozatgyilkos
25 Dec '06 23:02
Originally posted by David113
[fen]4bBnQ/3pNrbr/2p1pp1p/8/8/kPP3P1/qppPPPP1/n3K2R[/fen]

What was the first move of the missing white rook?
What was the last move of that rook?
Maybe he never moved at all. You haven't! πππ
3. BigDoggProblem
Just...the Dogg
26 Dec '06 01:54
Originally posted by David113
[fen]4bBnQ/3pNrbr/2p1pp1p/8/8/kPP3P1/qppPPPP1/n3K2R[/fen]

What was the first move of the missing white rook?
What was the last move of that rook?
White captured Black's only missing unit on g3. Black made at least 3 captures (Pb2 and c2 plus Bf1 at home).

Black's stuck for legal retractions, so White has to hurry:

-1.Rh5-h1 c7-c6 -2.h2xPg3
Locking his own Rook out, but forced.
-2...g4-g3 -3.Rc5-h5 g5-g4 -4.Nf5-e7 Re7-f7 -5.Kf1-e1
Makes room on the first rank.
-5...Bg6-e8 -6.Ng3-f5 Re8-e7 -7.Kg1-f1 Bf5-g6 -8.Nf1-g3 Qb1-a2 -9.Bd6-f8 Ka2-a3 -10.Rb5-c5 Qe1-b1 -11.Bc5-d6 a3xRb2
The Rook must appear on b2. White's only other missing piece is a Knight, and it alone has the power to escape c2 once Bc1 and Pb2 come back.
-12.Rb1-b2
To get bK out, Pb2 must come back, which means Bc1 must be at home, which means an R must be in the SE corner. Rb1 is therefore the King Rook, and it's first move was 0-0, swapping places with wK.
4. 26 Dec '06 09:54
Correct
5. 26 Dec '06 13:20
1. In the following position, White wins in a spectacular fashion. Can you fint it out?

Normal winning can be achieved by anyone, but to win in style, here comes the moves: 1.Rh3+! gxh3+ 2.Kf3 g4+ 3.Kf4 g3 4.hxg3#.

kesavan7777
Real Name: R.Kesavan.
6. 26 Dec '06 13:411 edit
In the following position the great Cuban Master Jose Raul Capablanca as white outwitted his opponent Laskar, who held the title of a world champion for a record 27 years, in a spectacular and sterling moves!

Solution:1.NxN NxN 2.R-a8+! NxR 3.K-c8 Black resigns.

In commemoration of this victory, Cuba released a stamp featuring this chess position to honour the Greatest player ever lived on this earth. For anyone interested to see the stamp, here is the link:

http://www.geocities.com/kesavan7777/chess3.jpg

kesavan7777
Real Name: R.Kesavan.
7. 26 Dec '06 14:15
In the following chess problem White has to draw against the battery of black pawns assisted by their bishop. How to accomplish the task?

White hopes to trade his rook for Black's connected central pawns and reach a theoretical draw against the h-pawn and "wrong" bishop. First, 1 Re5? e3 2 Kg4 e2 3 Kxf4 e1/Q? 4 Rxe1+ Kxe1 5 Kf3! Kf1 6 Kg3 h5 (else 7 Kg2 or 7 Kh2 and draws) 7 Kh4 would draw as planned, except for 3 ... Bh2+! winning. Note that the position after 6 Kg3 is a mutual zugzwang: were it White's turn he would lose quickly after 7 Kf3 Bf2(h2) or 7 Kh3 Kf2 8 Kg4 Kg2 and 9 ... Be3. This explains Black's play against the second thematic try:1 Rc4! e3 And now 2 Rxf4!? e2 3 Re4 e1/Q+! 4 Rxe1+ Kxe1, and this too is a mutual zugzwang, White losing as before with 5 Kg3 Kf1, 5 Kh3 Kf2, or 5 Kg4 Ke2! 6 Kg3 Kf1. But had Black played here 2 ... Kd2 3 Rxe2+ Kxe2 then White would instead prevail by zugzwang with 4 Kg4! and now 4 ... Kf1(Ke3) 5 Kg3! and 4 ... Ke1 5 Kf3! draw as in the first thematic try, while 4 ... Kf2 blocks the Bg1 and thus abandons the remaining pawn to 5 Kh5. Hence the solution: after 1 Rc4 e3 White interpolates 2 Rd4+! Kc2 Or 2 ... Kc1; blocking the e-pawn with 2 ... Ke1(e2)? only helps White. Only now does White play 3 Rxf4 e2 4 Re4 Kd2 Note the threat 5 ... Be3! winning outright-- if 5 Re8 Be3 6 Rd8+ the Black king runs to h5 or h7 and then the e-pawn promotes. 5 Rxe2+ Kxe2 6 Kg4! And White draws by the progressive zugzwang analysis above. Remarkable depth with only four men in play!

kesavan7777
Real Name: R.Kesavan.
8. BigDoggProblem
Just...the Dogg
26 Dec '06 18:14
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