Found 6 crucial moments (4 blunders, 2 missed opportunitys).
BLUNDER: You hung your Queen. The opponent can simply take it with Qxc4. Nf3 is superior because it defends your Queen, prevents the pin of the Knight on d2, and prepares d6.
Rae1 allows Ba6, pinning the knight. Nd2 is superior because after Nd2 Ba6 Rfc1 d6, white develops and prepares to break the pin.
Kd3 blunders into a discovered attack. Black can play b4+, followed by Kc2 and bxc3, winning a piece after Bxc3. Kf2 is superior because it avoids the discovered attack and maintains a better position.
Qc2 allows b1=Q followed by Qd2+ Kb5 Qc3, losing the advantage. Qd2+ forces Kb3, then Qd3+ leads to Kb4 and a draw, maintaining some control.
You had a chance to force a quick win with Kd4. This move immediately puts the Black king under pressure. If Black responds with Kb4, then Qxc3+ forces the Black king to Kb5, leading to a decisive advantage.
You had a chance to force a checkmate with Qb5! This move immediately threatens mate and severely restricts the Black king. The engine's suggested line is Qb5 Ka2 Kc3 Ka1, which forces checkmate. This decisive sequence was a missed opportunity to win the game immediately.
Copy this PGN to paste into Lichess, ChessBase, or any analysis tool.
[Event "Live Chess"]
[Site "Chess.com"]
[Date "2026.03.08"]
[White "erivera90"]
[Black "aCasper1"]
[Result "1/2-1/2"]
1. e4 {+0.40} e5 {+0.25} 2. Nf3 {+0.38} Nc6 {+0.43} 3. d4 {+0.19} exd4 {+0.22}
4. Bc4 {-0.13} Bc5 {+0.30} 5. Ng5 {-0.27} Nh6 {-0.10} 6. Nxf7 {-0.02} Nxf7
{+0.04} 7. Bxf7+ {+0.24} Kxf7 {+0.17} 8. Qh5+ {+0.18} g6 {+0.15} 9. Qxc5 {+0.14}
Qh4 {+0.79} 10. O-O {-0.21} Qxe4 {-0.43} 11. Nd2 {-0.37} Qe2 {+0.62} 12. Qc4+ $4
{-1.99 Pin · Qxc4} Qxc4 {-1.98} 13. Nxc4 {-2.09} Re8 {-1.67} 14. Bg5 {-1.94} b6
{-1.89} 15. Rae1 $4 {-4.12 Pin · Ba6} Rxe1 {-2.14} 16. Rxe1 {-2.09} Ba6 {-1.21}
17. Ne5+ {-1.06} Nxe5 {-1.14} 18. Rxe5 {-1.13} Re8 {-1.09} 19. Rxe8 {-1.16} Kxe8
{-1.19} 20. Bd2 {-1.21} c5 {-1.10} 21. c3 {-1.09} dxc3 {-1.09} 22. bxc3 {-1.20}
d5 {-0.94} 23. f4 {-2.56} Ke7 {-2.16} 24. Kf2 {-2.13} Ke6 {-2.05} 25. Ke3
{-2.08} Kf5 {-1.73} 26. g3 {-2.45} b5 {-0.55} 27. a3 {-0.73} Kg4 {-0.44} 28. Kd3
$4 {-4.07 Discovered Attack · b4+} b4+ {-4.47} 29. c4 {-5.64} bxa3 {-5.99} 30.
Bc1 {-6.14} a2 {-6.13} 31. Bb2 {-6.10} dxc4+ {-3.71} 32. Ke4 {-4.64} Bb7+
{-5.14} 33. Ke5 {-5.60} Kf3 {-6.00} 34. f5 {-6.45} Ke2 {+0.00} 35. f6 {+0.00}
Kd2 {+0.00} 36. f7 {+0.00} c3 {+0.00} 37. f8=Q {+0.00} cxb2 {+0.00} 38. Qf2+
{+0.00} Kc3 {+0.00} 39. Qe3+ {+0.00} Kc4 {+0.00} 40. Qe2+ {+0.00} Kb3 {+0.00}
41. Qd3+ {+0.00} Kb4 {+0.00} 42. Qd2+ {+0.00} Kb3 {+0.00} 43. Qd1+ {+0.00} Kb4
{+0.00} 44. Qc2 $4 {-8.53 Positional · b1=Q} Ka3 {+5.78} 45. Qc3+ {+6.01} Ka4
{+5.90} 46. Qxb2 {+5.80} c4 {+6.69} 47. Qxa2+ {+6.57} Kb4 {+6.65} 48. Qxa7
{+6.22} Bh1 {+6.82} 49. Qd4 {+5.94} Kb3 {+6.60} 50. Qe3+ {+6.88} c3 {#9} 51. Qc1
$6 {+4.30 Missed Forced Mate · best: Kd4} c2 {+4.97} 52. Qxh1 {+4.37} Kb2
{+6.90} 53. Qb7+ {+6.85} Kc3 {+8.00} 54. Qc6+ {+6.04} Kd2 {+7.43} 55. Qd5+
{+7.67} Kc3 {+35.89} 56. Qd4+ {#10} Kb3 {+37.15} 57. Qd3+ {+35.92} Kb2 {+6.70}
58. Qd4+ {+35.32} Kb1 {+35.62} 59. Qb4+ {+35.15} Kc1 {+35.33} 60. Qd4 {+35.28}
Kb1 {+35.71} 61. Qg1+ {+35.02} c1=Q {+34.76} 62. Qxc1+ {+34.75} Kxc1 {+35.08}
63. Kf6 {+35.12} Kd2 {+35.20} 64. Kg7 {+35.68} Ke3 {+35.61} 65. Kxh7 {+42.69}
Kf3 {+96.05} 66. Kxg6 {#16} Kg4 {#16} 67. h4 {#14} Kxg3 {#14} 68. h5 {#12} Kg4
{#11} 69. h6 {#10} Kf4 {#10} 70. h7 {#9} Ke4 {#9} 71. h8=Q {#8} Kf4 {#7} 72.
Qf6+ {#7} Ke4 {#7} 73. Qf5+ {#9} Ke3 {#7} 74. Kg5 {#9} Kd4 {#9} 75. Qf4+ {#10}
Kc3 {#9} 76. Kf5 {#6} Kd3 {#6} 77. Qe4+ {#6} Kc3 {#6} 78. Ke5 {#5} Kd2 {#4} 79.
Kd4 {#3} Kc1 {#3} 80. Qd3 {#4} Kb2 {#4} 81. Qc3+ {#3} Ka2 {#3} 82. Qc4+ {#4} Kb2
{#4} 83. Kd3 {#3} Ka3 {#3} 84. Kc3 $4 {+0.00 Missed Mate in ? · best: Qb5}
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