No. 253, February 2011
15120 -
Die Schwalbe, No. 253, 02/2012
![[k7/PpP3p1/PKpp3P/pp6/P7/6P1/2PPp3/8]](15120.gif)
9+8. Last 20 single moves?
[k7/PpP3p1/PKpp3P/pp6/P7/6P1/2PPp3/8]
This is probably a retro-length record for republican problems (only Ps and Ks).
The solution not available yet. Please contribute!
15121 -
Die Schwalbe, No. 253, 02/2012
![[1kr5/4pp1p/5rpn/p2p1bbn/6q1/4P3/1PP2PPP/RN1QK1NR]](15121.gif)
12+14. Shortest Proof game in 17.0 moves
[1kr5/4pp1p/5rpn/p2p1bbn/6q1/4P3/1PP2PPP/RN1QK1NR]
The solution not available yet. Please contribute!
15122 -
Die Schwalbe, No. 253, 02/2012
![[rnbqkb1r/2ppp3/8/1N1R1p2/7P/PPNB1P2/1RPPP2Q/3n1KB1]](15122.gif)
15+12. Proof game in 21.5 moves
[rnbqkb1r/2ppp3/8/1N1R1p2/7P/PPNB1P2/1RPPP2Q/3n1KB1]
1.Sf3 b5 2.Sd4 b4 3.f3 b3 4.axb3 h5 5.Ta5 h4 6.Td5 h3 7.Sb5 hxg2 8.h4 g1=S 9.Lh3 a5 10.Lf5 a4 11.Ld3 a3 12.bxa3 g5 13.Lb2 g4 14.Ld4 g3 15.S1c3 g2 16.Kf2 Sh6 17.D:g1 Sf5 18.Dh2 Se3 19.Tb1 g1=S 20.Tb2 Sd1+ 21.Kf1 f5 22.L:g1
15123 -
Die Schwalbe, No. 253, 02/2012
![[2kr1n2/1p3rbp/3ppP1P/8/2PP1B2/1P2K2P/P2P4/6NR]](15123.gif)
12+9. Retract 4 moves, then #1 (Proca-Retractor, Anticirce)
[2kr1n2/1p3rBP/3ppP1P/8/2PP1B2/1P2K2P/P2P4/6NR]
The solution not available yet. Please contribute!
15124 -
Die Schwalbe, No. 253, 02/2012
![[8/5k2/8/8/8/8/8/4K3]](15124.gif)
1+1. Retract 12 moves, then #1 (Proca-Retractor, Anticirce)
[8/5k2/8/8/8/8/8/4K3]
The solution not available yet. Please contribute!
15125 -
Die Schwalbe, No. 253, 02/2012
![[rnb1qbnr/p2ppppp/1Q6/8/2p4P/4PN2/1PPP1PP1/RNB1K3]](15125.gif)
13+14. Shortest proof game in 6.5 moves (Antisupercirce, Madrasi, Losing Chess)
[rnb1qbnr/p2ppppp/1Q6/8/2p4P/4PN2/1PPP1PP1/RNB1K3]
The solution not available yet. Please contribute!
15126 -
Die Schwalbe, No. 253, 02/2012
![[rnb1kbn1/p1ppp2p/1p3p2/8/8/1P6/P1PPP2P/RNBQKBN1]](15126.gif)
13+13. Shortest proof game in 10.5 moves (Losing Chess)
[rnb1kbn1/p1ppp2p/1p3p2/8/8/1P6/P1PPP2P/RNBQKBN1]
The solution not available yet. Please contribute!
15127 -
Die Schwalbe, No. 253, 02/2012
![[2b1k2r/1pp3pp/1n4p1/p2Q2q1/4n3/BP2P3/P1Pr2PP/RN2KBNR]](15127.gif)
14+13. Shortest proof game in 11.0 moves (SAT)
[2b1k2r/1pp3pp/1n4p1/p2Q2q1/4n3/BP2P3/P1Pr2PP/RN2KBNR]
The solution not available yet. Please contribute!
15128 -
Die Schwalbe, No. 253, 02/2012
![[8/8/8/8/5B2/3p4/6k1/4K3]](15128.gif)
2+2. Add a piece for a mate. How many solutions?
[8/8/8/8/5B2/3p4/6k1/4K3]
The solution not available yet. Please contribute!
15129 -
Die Schwalbe, No. 253, 02/2012
![[8/8/8/8/8/8/8/8]](15129.gif)
0+0. Construct a position as economical as possible (with the wK near his home square) so that there is only one possibility to add a ) white b) black piece for a mate.
(Konstruiere eine möglichst ökonomische Stellung (mit dem wK nahe seinem Ursprungsfeld), so dass es nur EINE Möglichkeit gibt, einen a) wei?#376;en, b) schwarzen Stein zu einer Mattstellung zu ergänzen.)
[8/8/8/8/8/8/8/8]
The solution not available yet. Please contribute!
15131 -
Die Schwalbe, No. 253, 02/2012
![[rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR]](15131.gif)
16+16. Find the unique game in kamikaze chess ending with 5.Qd5xPf7#
[rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR]