No. 38, Apr-Jun 2007
R0132 - R. Aliovsadzade, M. Caillaud, E. Fomichev
StrateGems 38, Apr-Jun 2007
Dedicated to Guy Sobrecases
21+0. Color the pieces to create a stalemate
[4BKR1/3N2PR/4P1RP/3NPPPK/4PPPN/5P1Q/6P1/8]
Solution
R0133 - Ryan McCracken
Add a whit Kink and 5 white Pawns for an IC (Demotion chess)
[8/8/8/8/8/1k6/8/8]
R0134 - Klaus Wenda
9+9. Retract 5 moves, then mate in 1 move (Proca retractor, no forward defense, Anti-Circe)
[8/8/8/3p4/P1R2KP1/kbp1p1P1/NpppP2q/R6R]
P0205 - Kevin Begley
For Addison
16+15. Proof game in 13.5 moves (Duellist chess)
[r1bqkbnr/pp3ppp/4p3/3pP3/2pK4/P7/P1PP1PPP/RNBQ1BNR]
P0206 - Michael Grushko
13+16. Proof game in 15.5 moves (Duellist chess)
[rnbq1bnr/pk1p2pp/1p2p3/1P3p2/K1p2P2/8/P1PPP1PP/R4BNR]
P0207 - Henryk Grudzinski
StrateGems 38, Apr-Jun
13+15. Proof game in 17.0 moves (Circe Parrain)
[1Bb1k1nR/1r4r1/8/4N1q1/3n4/pppppppp/2PP1PPP/3QKBNR]
Demotion chess: Any piece (not pawn) that sets foot on the 8th rank is immediately reborn as a pawn on the 2nd rank of the same file; promoting pawns are excempted during the promotion move.
Duellist chess: Once a unit has moved, it must continue moving turn after turn, as long as it has legal moves.
ParrainCirce: When captured, a piece is reborn on the square that has the same distance and direction from the capture square as the distance and direction between the departure and arrival square of the next move. E.g. 1. d4 e5 2. dxe5 Qe7[+bPf4]