[Retros] Probleemblad February 2004

[Joost de Heer]

R225 - Tom Volet
3BKsqr/p1Ppp1ps/P1p1p1Pb/k5p1/8/4P3/4P1PP/5B2 (10+13)
+---+---+---+---+---+---+---+---+

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

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

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

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

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

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

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

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

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

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

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

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

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

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

| . |   | . |   | . | B | . |   |

+---+---+---+---+---+---+---+---+
Release the position

R226 - Gerd Wilts
1rbqkb1r/ppppp1pp/s4p2/8/2BQs3/8/PPPSS1PP/R1B1K2R (13+16)
+---+---+---+---+---+---+---+---+

|   |*R |*B |*Q |*K |*B |   |*R |

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

|*P |*P |*P |*P |*P |   |*P |*P |

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

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

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

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

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

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

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

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

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

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

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

| R |   | B |   | K |   | . | R |

+---+---+---+---+---+---+---+---+
(a) SPG 7.5 (C+)
(b) PG 12.0

R227 - Joost de Heer
4qbb1/3kp2s/1pp2p1s/2pp3r/7p/3P3r/PPP1PP2/RSB1KBSR (13+15)
+---+---+---+---+---+---+---+---+

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

+---+---+---+---+---+---+---+---+
SPG 18.0 (C+)

R228 - Rustam Ubaidullaev
K3Q3/3s2rr/pppppppp/q2Sk3/1bb3s1/1PP5/P2PPPPP/B2R1BSR (16+16)
+---+---+---+---+---+---+---+---+

| K | . |   | . | Q | . |   | . |

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

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

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

|*P |*P |*P |*P |*P |*P |*P |*P |

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

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

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

|   |*B |*B | . |   | . |*S | . |

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

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

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

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

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

| B |   | . | R | . | B | S | R |

+---+---+---+---+---+---+---+---+
SPG 21.5

R229 - Reto Aschwanden
r1bk1bRr/pp1pp2Q/2p3B1/4B3/P4P1R/2PP1P2/7P/3S2SK (14+10)
+---+---+---+---+---+---+---+---+

|*R | . |*B |*K |   |*B | R |*R |

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

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

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

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

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

| . |   | . |   | B |   | . |   |

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

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

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

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

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

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

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

| . |   | . | S | . |   | S | K |

+---+---+---+---+---+---+---+---+
SPG 21.5

R230 - Roberto Osorio, Jorge Lois, Oscar Cuasnicú
rsbR1sk1/1Qpp1ppp/p1p1p3/8/7b/P5P1/P1PPPP1P/RSBqS1K1 (15+15)
+---+---+---+---+---+---+---+---+

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

+---+---+---+---+---+---+---+---+
SPG 21.5

R231 - Jorge Lois
rsbqkbsr/pppppp1p/7p/8/3P4/5P2/PPP2PPP/RS1QKBSR (15+16)
+---+---+---+---+---+---+---+---+

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

+---+---+---+---+---+---+---+---+
SPG 5.0 (Circe)

R232 - Wolfgang Dittmann
8/5P2/8/1s3P2/8/k6b/3p2P1/b1S2K2 (5+5)
+---+---+---+---+---+---+---+---+

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

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

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

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

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

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

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

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

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

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

|*K |   | . |   | . |   | . |*B |

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

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

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

|*B |   | S |   | . | K | . |   |

+---+---+---+---+---+---+---+---+
Retract 13 halfmoves for a #1, Anticirce, Proca-retractor without forward
defense

R233 - Klaus Wenda
2S2S2/b3s3/8/8/5k2/3P4/4P3/4Kbr1 (5+5)
+---+---+---+---+---+---+---+---+

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

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

|*B |   | . |   |*S |   | . |   |

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

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

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

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

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

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

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

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

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

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

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

| . |   | . |   | K |*B |*R |   |

+---+---+---+---+---+---+---+---+
Retract 9 halfmoves for a #1, Anticirce, Proca-retractor

In a normal Proca retractor, black can defend by taking back a move which
results in a position in which black can reach the aim. This forward defense
isn't allowed in R232.
-- 
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