Bird's Opening
1. f4
Main Transpositions
1. f4 d5 2. e3 Nf6 3. d4 to 1. d4 d5 2. e3 Nf6 3. f4
1. f4 Nf6 2. Nf3 g6 3. g3 d5 to 1. .. d5 2. Nf3 Nf6 3. g3 g6
Most Popular
1. f4 d5 2. Nf3 Nf6 3. e3 (728/M). More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nf6 (1083/M). More: dbcn ccoe c365
1. f4 d5 2. Nf3 g6 (599/M). More: dbcn ccoe c365
1. f4 d5 2. Nf3 (2297/M). More: dbcn ccoe c365
1. f4 d5 (3030/M). More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 (752/M). More: dbcn ccoe c365
1. f4 Nf6 (923/M). More: dbcn ccoe c365
1. f4 e5 (600/M). More: dbcn ccoe c365
1. f4 c5 (535/M). More: dbcn ccoe c365
1. f4 (6147/M). More: dbcn ccoe c365
TCEC Games
1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Be2 c5 7. O-O Nc6 8. Ne5 (4cp, 87/M, TCEC +0=4-0). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. Be2 e6 5. O-O Nc6 (5cp, 4/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. h3 Bxf3 5. Qxf3 (0cp, 35/M, TCEC +1=4-1). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nf6 3. e3 e6 4. b3 Be7 5. Bb2 O-O 6. g3 c5 (-1cp, 2/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nf6 (-1cp, 1083/M, TCEC +0=3-1). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 g6 3. e3 Bg7 4. Be2 Nf6 5. O-O O-O 6. d3 c5 7. Qe1 Nc6 8. Nc3 d4 (-61cp, 9/M, TCEC +0=1-1). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nf6 5. O-O O-O 6. d3 c5 7. c3 Nc6 8. Qe1 d4 (-21cp, 29/M, TCEC +1=1-2). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nf6 5. O-O O-O 6. d3 c5 (-1cp, 243/M, TCEC +0=4-0). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 g6 3. g3 Bg7 4. Bg2 Nf6 (-1cp, 331/M, TCEC +0=1-1). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 g6 (-1cp, 599/M, TCEC +4=1-3). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 c5 3. e3 Nc6 4. b3 Bg4 5. Bb2 e6 (-16cp, 5/M, TCEC +1=6-1). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 c5 (-1cp, 410/M, TCEC +1=3-5). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nc6 (1cp, 173/M, TCEC +1=0-3). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 c6 (0cp, 40/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. f4 d5 2. Nf3 Bf5 3. d4 (33cp, 13/M, TCEC +0=1-1). Games. More: dbcn ccoe c365
1. f4 d5 2. e3 Nf6 (-1cp, 164/M, TCEC +3=2-4). Games. More: dbcn ccoe c365
1. f4 d5 2. b3 Nf6 (-9cp, 155/M, TCEC +1=3-2). Games. More: dbcn ccoe c365
1. f4 d5 2. g3 Nf6 (-2cp, 59/M, TCEC +3=1-2). Games. More: dbcn ccoe c365
1. f4 d5 2. g3 (30cp, 133/M, TCEC +0=1-2). Games. More: dbcn ccoe c365
1. f4 d5 2. c4 (59cp, 21/M, TCEC +0=6-3). Games. More: dbcn ccoe c365
1. f4 d5 (-1cp, 3030/M, TCEC +1=5-3). Games. More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 O-O 5. e3 d6 6. Be2 c5 7. O-O Nc6 (-9cp, 43/M, TCEC +3=7-0). Games. More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 d6 5. e4 O-O 6. d3 (90cp, 12/M, TCEC +0=1-3). Games. More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 d6 5. e4 O-O 6. Qe2 (85cp, 1/M, TCEC +0=2-2). Games. More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 g6 (-1cp, 376/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 c5 (-1cp, 127/M, TCEC +1=1-2). Games. More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 e6 (-1cp, 52/M, TCEC +1=1-4). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 g4 6. Nh4 (-5cp, 97/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 (-5cp, 123/M, TCEC +2=6-0). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 (28cp, 188/M, TCEC +4=6-0). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Nf6 5. d4 Ng4 (11cp, 14/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 (-23cp, 323/M, TCEC +0=6-0). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 Nc6 3. Nf3 g5 (94cp, 18/M, TCEC +1=1-0). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 Nc6 (24cp, 31/M, TCEC +1=2-1). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 Qh4+ (138cp, 1/M, TCEC +2=0-0). Games. More: dbcn ccoe c365
1. f4 e5 2. fxe5 (-21cp, 469/M, TCEC +3=6-2). Games. More: dbcn ccoe c365
1. f4 e5 (21cp, 600/M, TCEC +6=19-1). Games. More: dbcn ccoe c365
1. f4 c5 2. Nf3 Nc6 3. g3 g6 4. Bg2 Nf6 (0cp, 8/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. f4 c5 (0cp, 535/M, TCEC +1=3-0). Games. More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 3. e4 c6 (86cp, 18/M, TCEC +2=3-1). Games. More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Nc6 5. O-O e6 6. e4 Nge7 (1cp, 23/M, TCEC +0=1-0). Games. More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 3. g3 c5 4. Bg2 Nc6 5. d3 d6 6. Nc3 Nf6 (0cp, 2/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 (0cp, 283/M, TCEC +3=1-4). Games. More: dbcn ccoe c365
1. f4 g6 (-1cp, 414/M, TCEC +2=2-2). Games. More: dbcn ccoe c365
1. f4 d6 (1cp, 155/M, TCEC +1=2-1). Games. More: dbcn ccoe c365
1. f4 f5 2. e4 fxe4 3. Nc3 Nf6 4. g4 (79cp, 2/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. f4 g5 (99cp, 5/M, TCEC +3=3-0). Games. More: dbcn ccoe c365
1. f4 a5 (4cp, 0/M, TCEC +0=2-0). Games. More: dbcn ccoe c365
1. f4 (1cp, 6147/M, TCEC +3=18-4). Games. More: dbcn ccoe c365
Biased Popular Lines
1. f4 d5 2. Nf3 Nf6 3. e3 g6 4. b3 Bg7 5. Bb2 O-O 6. Be2 c5 7. O-O Nc6 8. d3 (197cp, -195cp; 10/M, 7%). More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb2 e6 6. Bb5 a6 (71cp, -71cp; 7/M, 8%). More: dbcn ccoe c365
1. f4 d5 2. Nf3 Nf6 3. e3 Bg4 4. d4 e6 5. Bd3 c5 6. c3 (80cp, -28cp; 9/M, 116%). More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 g6 3. b3 Bg7 4. Bb2 d6 5. e4 O-O 6. d3 (86cp, -41cp; 12/M, 87%). More: dbcn ccoe c365
1. f4 Nf6 2. Nf3 d6 3. b3 (86cp, -86cp; 17/M, 17%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 g4 6. Nh4 Be7 (84cp, -75cp; 9/M, 10%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 h5 6. d4 g4 (230cp, -35cp; 7/M, 63%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 h5 (195cp, -186cp; 13/M, 11%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. d4 g4 6. Ng5 f5 7. e4 h6 8. e5 Be7 9. Nh3 gxh3 10. Qh5+ Kf8 11. Bc4 (140cp, -68cp; 7/M, 100%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. d4 g4 6. Ng5 f5 7. e4 h6 8. e5 Be7 9. Nh3 (72cp, -72cp; 9/M, 96%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. Nf3 Bg4 (90cp, -71cp; 9/M, 9%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 Nc6 3. Nf3 g5 (117cp, -97cp; 18/M, 63%). More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 3. e4 d6 4. Nc3 Nf6 5. Bc4 c6 6. Bb3 O-O (80cp, -65cp; 8/M, 78%). More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 3. e4 d6 4. Nc3 c6 (89cp, -88cp; 11/M, 9%). More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 3. e4 c6 (88cp, -88cp; 18/M, 12%). More: dbcn ccoe c365
Lines with Disagreement to Human Master Play
1. f4 d5 2. Nf3 Nf6 3. e3 c5 4. b3 Nc6 5. Bb2 Bf5 6. Bb5 a6 (61cp, -54cp; 5/M, 28%). More: dbcn ccoe c365
1. f4 d5 2. e3 Nc6 3. b3 (73cp, -74cp; 5/M, 33%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. g3 g4 6. Nh4 Ne7 7. d4 Ng6 8. Nxg6 hxg6 9. Qd3 Nc6 10. c3 Qe7 11. Bg2 Bd7 (95cp, -92cp; 5/M, 50%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. d4 g4 6. Ng5 f5 7. e4 h6 8. e5 Be7 9. Nh3 gxh3 10. Qh5+ Kf8 11. Bc4 (140cp, -68cp; 7/M, 100%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 g5 5. d4 g4 6. Ng5 f5 7. e4 h6 8. e5 Be7 9. Nh3 (72cp, -72cp; 9/M, 96%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Bg4 5. e3 Nc6 (97cp, -61cp; 5/M, 45%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 d6 3. exd6 Bxd6 4. Nf3 Nc6 5. d4 Bg4 (97cp, -76cp; 7/M, 69%). More: dbcn ccoe c365
1. f4 e5 2. fxe5 Nc6 3. Nf3 g5 (117cp, -97cp; 18/M, 63%). More: dbcn ccoe c365
1. f4 g6 2. Nf3 Bg7 3. e4 d6 4. Nc3 Nf6 5. Bc4 c6 6. Bb3 O-O (80cp, -65cp; 8/M, 78%). More: dbcn ccoe c365
Latest dbcn data: 2025-12-19