[Retros] The Problemist september 2009

[Joost de Heer]

R414 - Mark Thornton
70th Birthday present for CCL
1s1qkr2/2ppppp1/6p1/8/4P3/5S2/PPPP1PP1/RSBQKB2 (14+10)
+---+---+---+---+---+---+---+---+

|   |*S |   |*Q |*K |*R |   | . |

+---+---+---+---+---+---+---+---+

| . |   |*P |*P |*P |*P |*P |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |*P | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . | P | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . | S | . |   |

+---+---+---+---+---+---+---+---+

| P | P | P | P |   | P | P | . |

+---+---+---+---+---+---+---+---+

| R | S | B | Q | K | B | . |   |

+---+---+---+---+---+---+---+---+
SPG 11.0

R415 - Bernd Gräfrath
Dedicated to Mario Richter
r2qk1sr/pppsBppp/3p4/1Q1bp3/2PPPR1R/2P2S2/P4P1P/4K3 (13+15)
+---+---+---+---+---+---+---+---+

|*R | . |   |*Q |*K | . |*S |*R |

+---+---+---+---+---+---+---+---+

|*P |*P |*P |*S | B |*P |*P |*P |

+---+---+---+---+---+---+---+---+

|   | . |   |*P |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . | Q | . |*B |*P |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . | P | P | P | R |   | R |

+---+---+---+---+---+---+---+---+

| . |   | P |   | . | S | . |   |

+---+---+---+---+---+---+---+---+

| P | . |   | . |   | P |   | P |

+---+---+---+---+---+---+---+---+

| . |   | . |   | K |   | . |   |

+---+---+---+---+---+---+---+---+
SPG 16.0

F2755 - Charles Frankiss
rsbq1bsr/Pp1pp1pp/P7/P7/P7/pk6/p3P1PP/RSBPKBSR (15+15)
+---+---+---+---+---+---+---+---+

|*R |*S |*B |*Q |   |*B |*S |*R |

+---+---+---+---+---+---+---+---+

| P |*P | . |*P |*P |   |*P |*P |

+---+---+---+---+---+---+---+---+

| P | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| P |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

| P | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

|*P |*K | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|*P | . |   | . | P | . | P | P |

+---+---+---+---+---+---+---+---+

| R | S | B | P | K | B | S | R |

+---+---+---+---+---+---+---+---+
SPG 6.0 Annan chess

F2728c - Paul Raican
rs2k1s1/ppp3p1/3r1p2/3p4/3q1b2/8/PP2PPPP/RSBQKBSR (14+13)
+---+---+---+---+---+---+---+---+

|*R |*S |   | . |*K | . |*S | . |

+---+---+---+---+---+---+---+---+

|*P |*P |*P |   | . |   |*P |   |

+---+---+---+---+---+---+---+---+

|   | . |   |*R |   |*P |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |*P | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   |*Q |   |*B |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

| P | P |   | . | P | P | P | P |

+---+---+---+---+---+---+---+---+

| R | S | B | Q | K | B | S | R |

+---+---+---+---+---+---+---+---+
SPG 8.0 Annan chess

Annan chess: Units move normally, unless they stand one square directly 
in front of another unit of their own side, when they take the powers of 
movement of that piece. An example game: 1. h2-h5 (moves like a rook) 
f7-e6 (moves like a bishop) 2. d2*d7+ (moves like a queen, gives check 
because after the move it regains its pawn-powers) Ke8-f7 3. c2-g6# 
(moves like a bishop, gives check because it regains its pawn powers. 
The black king moves like a bishop, so it can't escape, and h7 moves 
like a rook so it can't capture the pawn on g6. So this is mate).

SOLUTIONS MARCH
R407 - Shankar Ram
-1. Be6-g8 [Black can't add a piece because he'd be retrostalemate] 
Kg8-h8 [White adds a wS on h8] -2. Sf7-h8
- If black decides that something was uncaptured on h8, then 1. Sh6#
- If black decides that nothing was uncaptured on h8, then 1. Se5 Kh8 2. 
Sg6#

R408 - Lytton, Stockford
One of the blacksquared bishops is promoted. If white can still castle, 
then the g-pawn must've captured g3xh2xg1, and all missing white units 
are accounted for. wPe6 fell on e6, wPf promoted on g8 after capturing 
the queen, and wPd promoted on d8, after passing d7, so black can't 
castle. If black castling is allowed, then the g-pawn promoted after 
capturing both pawns, and the wPd captured the queen and was captured on e6.
a) 1.OOO! [2. Rd8#] Sd~/Sd6 2. Qf7/Qe7#
b) 1.Rad1! [2. Rd8#] Sd~/Sd6/OO 2. Qf7/Qe7/Sh6#

F2712 - Turnbull
-1. Kc7-c8[+wPc7]?? retro-stalemate
-1. Kd8-c8 Kb8xSa8 -2. Sc7-a8[wPc7] Ka8-b8 -3. Se8-c7 Kb8-a8 -4. e7-e8=S 
Ka8-b8 -5. Ke7-d8[+wPe7]