2 problem(s) found in 2558 milliseconds (displaying 2 problem(s)). [COMMENTDATE>=20200919 AND NOT K='Hilfsrückzüger' AND S='Aufbau (New York)' AND K='Unterverwandlung im Schlüsselzug'] [download as LaTeX]

1 - 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#

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...

2 - 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#

SCHRECKE: C+, popeye 4.85 (2020-10-17, hidden) 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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