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September 2017 - Solution
We present here Tom Harley's solution:
There are 92 solutions.
48 valid Chess960 initial white back rank positions are given below. Another 44 reverse the order of all 8 pieces. The last 4 cannot be reversed because queen-side castling has left-right asymmetry.
1) RQKBNRBN 1. d3 c6 2. e4 Qf4# 2) RBKRNQBN 1. b3 e6 2. h3 Qa3# 3) RBKRBQNN 4) QBRKBNRN 1. e3 b6 2. g3 Qf3# 5) RNBKRNQB 1. c3 f6 2. a3 Qb3# 6) RNBKRBQN 7) NRQKBNRB 1. e3 d6 2. f4 Qg4# 8) RNQKBNRB 9) RBQKBNRN 10) RNBKQNRB 1. c3 d6 2. b4 Qa4# 11) RNBKQBNR 12) RNBKQRNB 13) RNBKQBRN 14) RKRNNQBB 1. b4 e6 2. Kb2 Qxb4# 15) RKRNBQNB 16) RKRBNQBN 17) RKRBBQNN 18) RKBNNQRB 19) RKBNRQNB 20) RKBRNQNB 21) RKBBNQNR 22) RKBBNQRN 23) RKBBRQNN 24) NRKRBNQB 1. c4 f6 2. Kc2 Qxc4# 25) NRKRBBQN 26) BRKRNNQB 27) BRKRNBQN 28) NRKBBNQR 29) NRKBBRQN 30) BRKBNNQR 31) BRKBNRQN 32) BRKBRNQN 33) RBKRBNQN 34) NNRKRBBQ 1. d4 g6 2. Kd2 Qxd4# 35) NBRKRNBQ 36) BNRKRBNQ 37) BBRKRNNQ 38) NNRKBBRQ 39) NBRKBNRQ 40) NBRKBRNQ 41) RBBKRNNQ 42) RNBKRBNQ 43) NRBKRBNQ 44) RKRBQNBN 1. b4 d6 2. b5 Qxb5# 45) NBRKBQNR 1. b3 e6 2. 0-0-0 Qa3# 46) NBRKBQRN 47) NBRKNQBR 48) NBRKRQBN