2r1kb1r/6pp/nq4P1/P1pbp1N1/p1Np1p2/2PPP1nP/1R1BQP2/4KBR1 w k - 6 23
FEN state: 2r1kb1r/6pp/nq4P1/P1pbp1N1/p1Np1p2/2PPP1nP/1R1BQP2/4KBR1 w k - 6 23 ; Best move: b2b6
The current state of the chess board is: Black rook at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at g7 and black pawn at h7. Black knight at a6, black queen at b6 and white pawn at g6. White pawn at a5, black pawn at c5, black bishop at d5, black pawn at e5 and white knight at g5. Black pawn at a4, white knight at c4, black pawn at d4 and black pawn at f4. White pawn at c3, white pawn at d3, white pawn at e3, black knight at g3 and white pawn at h3. White rook at b2, white bishop at d2, white queen at e2 and white pawn at f2. White king at e1, white bishop at f1 and white rook at g1. Black kingside is the only castle move available. Half move number is 6. Full move number is 23. White to move.