rn2k1n1/5p1r/p2b2p1/3pp2p/P1pP2R1/2P5/1K2PP1P/RNB2BN1 w q - 9 20
FEN state: rn2k1n1/5p1r/p2b2p1/3pp2p/P1pP2R1/2P5/1K2PP1P/RNB2BN1 w q - 9 20 ; Best move: g4g5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black knight at g8. Black pawn at f7 and black rook at h7. Black pawn at a6, black bishop at d6 and black pawn at g6. Black pawn at d5, black pawn at e5 and black pawn at h5. White pawn at a4, black pawn at c4, white pawn at d4 and white rook at g4. White pawn at c3. White king at b2, white pawn at e2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white bishop at f1 and white knight at g1. Black queenside is the only castle move available. Half move number is 9. Full move number is 20. White to move.