r1b5/3ppk2/1p4p1/p1pn1p2/P1P2B1r/Rn3N1P/1PN1P1P1/2Q1KB1R b - - 5 23
FEN state: r1b5/3ppk2/1p4p1/p1pn1p2/P1P2B1r/Rn3N1P/1PN1P1P1/2Q1KB1R b - - 5 23 ; Best move: b3c1
The current state of the chess board is: Black rook at a8 and black bishop at c8. Black pawn at d7, black pawn at e7 and black king at f7. Black pawn at b6 and black pawn at g6. Black pawn at a5, black pawn at c5, black knight at d5 and black pawn at f5. White pawn at a4, white pawn at c4, white bishop at f4 and black rook at h4. White rook at a3, black knight at b3, white knight at f3 and white pawn at h3. White pawn at b2, white knight at c2, white pawn at e2 and white pawn at g2. White queen at c1, white king at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 5. Full move number is 23. Black to move.