rn1k2n1/1p4pr/p1p1Pp1p/2bpp3/4P1PP/8/P1NPKNR1/R1BQ1B2 b - - 4 23
FEN state: rn1k2n1/1p4pr/p1p1Pp1p/2bpp3/4P1PP/8/P1NPKNR1/R1BQ1B2 b - - 4 23 ; Best move: d5d4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8 and black knight at g8. Black pawn at b7, black pawn at g7 and black rook at h7. Black pawn at a6, black pawn at c6, white pawn at e6, black pawn at f6 and black pawn at h6. Black bishop at c5, black pawn at d5 and black pawn at e5. White pawn at e4, white pawn at g4 and white pawn at h4. White pawn at a2, white knight at c2, white pawn at d2, white king at e2, white knight at f2 and white rook at g2. White rook at a1, white bishop at c1, white queen at d1 and white bishop at f1. Both players have exhausted their castles. Half move number is 4. Full move number is 23. Black to move.