Chess Problem Database Server

12 problem(s) found in 7307 milliseconds (displaying 12 problem(s)). [COMMENTDATE>=20200919 AND NOT G='Retro' AND A='Gross, Otto'] [download as LaTeX]

1 - P1380995
Otto Gross
7 Aufbau (New York) 11/06/1943

(13+3) C+
#2

1. Dh5! (Zugzwang)
1. ... Ka4 2. Sc3#
1. ... Kc4 2. Sd6#
1. ... Kc6 2. Sd4#
1. ... Ka6 2. Sc7#
play all

more ...
comment

Keywords: X flights
Genre: 2#
Computer test: popeye 4.85
FEN: K6Q/5P2/4Pp2/1kPN1N2/1P2p1P1/P3P3/2P5/2B5
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-16 more...

2 - P1380997
Otto Gross
9 Aufbau (New York) 25/06/1943

(5+5) C+
#2

1. De7! (Zugzwang)
1. ... Sd3,Sb3,Sa2 2. Txe2#
1. ... Kxf2 2. Dh4#
1. ... Kxd2 2. Db4#
play all

more ...
comment

Genre: 2#
Computer test: popeye 4.85
FEN: 8/8/3QR3/8/8/8/2pNpN1p/2n1k2K
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-16 more...

3 - P1380998
Otto Gross
10 Aufbau (New York) 02/07/1943

(5+5) C+
#2

1. Tg5! droht 2. Dc7#
1. ... Tc3 2. Dxc3#
1. ... Txg5 2. Dxg5#
1. ... Tf5 2. Txf5#
1. ... Te5 2. Txe5#
1. ... Td5 2. Txd5#
1. ... Tc5 2. Dxc5#
1. ... Txa2 2. Dc3#
play all

überm Diagramm falsch Problemnummer 9, richtige Nummer 10 bei den Lösungen
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comment

Keywords: Grab
Genre: 2#
Computer test: popeye 4.85
FEN: 8/8/p7/krR5/p7/r7/N4B2/2Q2K2
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-16 more...

4 - P1380999
Otto Gross
11 Aufbau (New York) 09/07/1943

(5+3) C+
#4

1. g3! (Zugzwang)
1. ... c4 2. Lg1 c3 3. Kf2 Kd4 4. Kf3#
play all

more ...
comment

Keywords: Indian (L-K)
Genre: n#
Computer test: popeye 4.85
FEN: 8/8/4B3/2p1p3/4k3/4B3/2P1K1P1/8
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-16 more...

5 - P1381001
Otto Gross
13 Aufbau (New York) 23/07/1943

(5+1) C+
#2

1. Le8! (Zugzwang)
1. ... Kc5 2. Dd4#
1. ... Ke7 2. Dd7#
1. ... Kd5 2. Dc6#
1. ... Ke6 2. Dd7#
play all

more ...
comment

Keywords: Rex solus (s)
Genre: 2#
Computer test: popeye 4.85
FEN: 8/6K1/1P1k4/7B/Q7/5N2/8/8
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-16 more...

6 - P1381002
Otto Gross
14 Aufbau (New York) 30/07/1943

(10+6) C+
#2

1. Dc3! droht 2. Dxc7#,Dg3#
1. ... dxc3 2. Td5#
1. ... Lxh2,Le3,Lf2 2. Dxc7#
1. ... Kf4 2. Dg3#
1. ... Kd6 2. Dxc7#
1. ... c6,c5 2. Dg3#
1. ... Sf7 2. Dg3#
1. ... Sg6 2. Dxc7#
play all

im Dia sBg1, Kontrollnotation aber richtig
Henrik Juel: C+ Popeye 4.61 (the double threat never materializes) (2020-10-16)
comment

Genre: 2#
Computer test: Popeye 4.61
FEN: 1K5n/2p5/1p6/1P2kPP1/1Q1pP3/8/3R3P/1BB3b1
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-17 more...

7 - P1381003
Otto Gross
15 Aufbau (New York) 06/08/1943

(5+2) C+
#2

1. Sd6! droht 2. Dd8#
1. ... Kxd6 2. Db8#
1. ... Kb6 2. Sd5#
play all

more ...
comment

Genre: 2#
Computer test: Popeye 4.61
FEN: Q3K3/1Nk1N3/8/2p2P2/8/8/8/8
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-17 more...

8 - P1381010
Otto Gross
17 Aufbau (New York) 20/08/1943

(6+2) C+
#2

1. Sd4! (Zugzwang)
1. ... c4 2. Sd5#
1. ... cxd4 2. Sd5#
1. ... Kb6 2. Sd5#
1. ... Kd6 2. Db8#
play all

more ...
comment

Genre: 2#
Computer test: Popeye 4.61
FEN: Q4K2/2k5/4PN2/2p5/8/BN6/8/8
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-17 more...

9 - P1381013
Otto Gross
19 Aufbau (New York) 27/08/1943

(7+1) C+
#2

1. a4! (Zugzwang)
1. ... Ke4 2. Db7#
1. ... Ke6 2. Dd6#
1. ... Kc6 2. Dd6#
play all

more ...
comment

Keywords: Rex solus (s)
Genre: 2#
Computer test: Popeye 4.61
FEN: 8/8/P5K1/3k4/1QN5/4P3/P1P5/8
Input: Mario Richter, 2020-10-16
Last update: Alfred Pfeiffer, 2020-10-17 more...

10 - P1381014
Otto Gross
20 Aufbau (New York) 10/09/1943

(7+11)
#3

1. Th8! droht 2. Th8-b8#
1. ... Lxh8,Lf8 2. Lxe2 dxe2 3. Dh7#
2. ... c4 3. Dxd1#
1. ... Lxe5 2. Tb8+ Lb2 3. Sc3#
1. ... e1=D+,e1=L+ 2. Dxe1 Lxe5 3. Dxd1#
2. ... Lxh8,Lf8 3. Dxd1#
1. ... e1=S,e1=T 2. Dxe1 Lxe5 3. Dxd1#
2. ... Lxh8,Lf8 3. Dxd1#
Co-Dual 2. Tb8+ Sb2 3. Sc3#,Dxe1#
play all

zunächst mit Forderung #2 abgedruckt, Korrektur 17.09.1943
Henrik Juel: C+ Popeye 4.61, I guess, as 1... e1=ST do not prevent the threat (2020-10-16)
Henrik Juel: On further thought, not quite C+ because of the mate dual (2020-10-17)
Mario Richter: Henrik, it seems we have different opinions here: 1. Th8! threatens 2. Tb8#
1. ... e1=S,e1=T does prevent this threat by unpinning black Sd1, so now 2. Tb8+ can be parried by 2. ... Sb2! (2020-10-17)
comment

Genre: 3#
FEN: 8/6b1/3P3R/2ppP1pB/N7/p2p4/p2Kp3/rk1n3Q
Input: Mario Richter, 2020-10-16
Last update: Mario Richter, 2020-10-16 more...

11 - P1381021
Otto Gross
22 Aufbau (New York) 24/09/1943

(8+5)
#3

1. b8=L! droht 2. Le5+ Sb2 3. Dxa5#,Lxb2#
2. ... Sc3 3. Dxa5#
1. ... Ta7+ 2. Lxa7 Sc5 3. Lxc5#
2. ... Sb6 3. Lxb6#
1. ... Sc3 2. Dxa5+ Sa2 3. Le5#,Dxa2#
2. ... Sa4 3. Le5#
play all

Henrik Juel: Damaged by mate duals (2020-10-17)
comment

Keywords: under-promotion key (L), Stalemate avoidance
Genre: 3#
FEN: Q5R1/1P5K/8/rp6/np6/1P1N4/3N4/kB6
Input: Mario Richter, 2020-10-17
Last update: Alfred Pfeiffer, 2020-10-17 more...

12 - P1381025
Otto Gross
26 Aufbau (New York) 29/10/1943

(8+2) C+
#3

1. c8=T! (Zugzwang)
1. ... Sxc2 2. Txc2 ... 3. Sc3#
1. ... Sxb3 2. Sc4 ... 3. Sc3#
1. ... Kb1 2. Sc4 ... 3. Sc3#
play all

more ...
comment

Keywords: under-promotion key (T)
Genre: 3#
Computer test: popeye 4.85
FEN: 8/2P5/3K2B1/N7/8/1P6/kBP5/n2N4
Input: Mario Richter, 2020-10-17
Last update: Alfred Pfeiffer, 2020-10-17 more...

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The problems of this query have been registered by the following contributors:

Mario Richter (12)