1r2kb1r/1B6/2p2pp1/pp1p2Qp/1P1Nn1P1/B1P5/P1N1KP2/6RR w k - 0 21
FEN state: 1r2kb1r/1B6/2p2pp1/pp1p2Qp/1P1Nn1P1/B1P5/P1N1KP2/6RR w k - 0 21 ; Best move: g5g6
The current state of the chess board is: Black rook at b8, black king at e8, black bishop at f8 and black rook at h8. White bishop at b7. Black pawn at c6, black pawn at f6 and black pawn at g6. Black pawn at a5, black pawn at b5, black pawn at d5, white queen at g5 and black pawn at h5. White pawn at b4, white knight at d4, black knight at e4 and white pawn at g4. White bishop at a3 and white pawn at c3. White pawn at a2, white knight at c2, white king at e2 and white pawn at f2. White rook at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 21. White to move.