1r1qk1nr/1p3p2/2p1b1Bp/3PN1P1/p3P3/P7/1P1P1P2/RNnK3R b k - 0 21
FEN state: 1r1qk1nr/1p3p2/2p1b1Bp/3PN1P1/p3P3/P7/1P1P1P2/RNnK3R b k - 0 21 ; Best move: c6d5
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black knight at g8 and black rook at h8. Black pawn at b7 and black pawn at f7. Black pawn at c6, black bishop at e6, white bishop at g6 and black pawn at h6. White pawn at d5, white knight at e5 and white pawn at g5. Black pawn at a4 and white pawn at e4. White pawn at a3. White pawn at b2, white pawn at d2 and white pawn at f2. White rook at a1, white knight at b1, black knight at c1, white king at d1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 21. Black to move.