r1q1kr2/p2n3p/b1pppP2/1P4b1/2R1P1P1/PP4n1/3PN1KP/1NB1QB1R w q - 3 20
FEN state: r1q1kr2/p2n3p/b1pppP2/1P4b1/2R1P1P1/PP4n1/3PN1KP/1NB1QB1R w q - 3 20 ; Best move: e2g3
The current state of the chess board is: Black rook at a8, black queen at c8, black king at e8 and black rook at f8. Black pawn at a7, black knight at d7 and black pawn at h7. Black bishop at a6, black pawn at c6, black pawn at d6, black pawn at e6 and white pawn at f6. White pawn at b5 and black bishop at g5. White rook at c4, white pawn at e4 and white pawn at g4. White pawn at a3, white pawn at b3 and black knight at g3. White pawn at d2, white knight at e2, white king at g2 and white pawn at h2. White knight at b1, white bishop at c1, white queen at e1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 3. Full move number is 20. White to move.