Stalemate In 1
These problems are characterized by a simple approach that allows for a stalemate after White's move. Black is therefore in forward and retro stalemate, which as far as the pieces are concerned is similar. Greater care must be exercised for the Black pawns, if any.
N2K4/8/3k1PP1/5PP1/PP1PB3/2B3P1/8/7Q w - - id #008 AGBvNDE (13+1) WTM.LM?;
#023 is reserved
k7/Pp6/pP6/P7/6K1/7p/7P/8 w - - id #025 (5+4) WM? The first example Sep 9 2000; This was the first DR position designed, and is interesting primarily from a historical point of view. A process of simplification then ensued. Firstly k7/PpK5/1P6/p7/P7/8/8/8 w - - id #025a (4+3) AGB WM?; then k7/Pp1K4/1P6/8/8/8/8/8 w - - id #025b (3+2) AGBvNDE WM?;. Only after this was an intermediate Class 1/2 position discovered, then pure Class 1 positions, getting progressively simpler until #046 and #001.
4K2k/6pP/6P1/8/8/PPP5/1p1P4/bN6 w - - id #031 (8+4) WTM.LM?;
2K2k2/4pPp1/4P1P1/6P1/3P3p/7P/4P3/8 w - - id #033 (8+4) WTM.LM?;
brnk1N1B/qnb1pBR1/rbKpP3/p1pP2NQ/P1P2p2/1p3P1p/1P5P/5R2 w - - id #049 (15+16) White to move. Last move? Remove at least one piece: last move now?;
k1N5/1pP5/1P1KP3/8/8/8/8/8 w - - id #055 (5+2) White to move. Last move?; This exhibits the Ceriani-Frolkin theme.
8/8/8/Pp6/pp6/kp6/1p6/1K6 w - - id #074 (2+6) Andrew Buchanan version Noam Elkies. En passant OK?;
kb6/b1p5/1pP5/1P6/6QP/1B4P1/p1P2PRR/N3K1RR w - - id #081 (14+6) White to move. Last move? Castling rights?;
BK1k1b2/RP1Ppbp1/QP2P1P1/RP4P1/P7/8/8/8 w - - id #084 (13+5) White to move. Last move?; |