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Analysis: erivera90 vs Moby154

Date: 2026.03.30 | Event: Live Chess | Site: Chess.com

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Evaluation

Your moves Opponent moves

Found 5 crucial moments (3 blunders, 2 missed opportunitys).

Moment 1 — Missed Opportunity MINOR ↗

Missed Losing Exchange

FEN: r4rk1/2Rnpp1p/1p3np1/5P2/1p1P4/4B1P1/P4PBP/2R3K1 w - - 1 19

You Played: R1c2
You Could Have Played: Bxa8
Eval Swing: -272 cp
Variation: Bxa8 Rxa8 Bh6 Re8

You could have played: Bxa8 Rxa8 Bh6 Re8

Coach Explanation

You had a chance to play Bxa8, winning a rook! After Bxa8, the best response for black is Rxa8. Then Bh6 puts significant pressure on Black. The continuation Re8 further develops Black's pieces while addressing some of the pressure. This line gives you a clear advantage.

Moment 2 — Missed Opportunity MAJOR ↗

Missed Pin

FEN: 5rk1/2Rnp2p/1p3np1/r7/1p1P4/4B1P1/P1R2PBP/6K1 w - - 0 21

You Played: Rc8
You Could Have Played: Bd2
Eval Swing: -307 cp
Variation: Bd2 b3 axb3 Ra1+

You could have played: Bd2 b3 axb3 Ra1+

Coach Explanation

You had a chance to play Bd2! This would have created a pin on the knight. After Bd2, if Black plays b3, then axb3 opens the a-file for Ra1+, creating a dangerous attack. This was a great opportunity to gain a significant advantage!

Moment 3 — Blunder MAJOR ↗

Positional

FEN: 8/3npk1p/1p4p1/r5B1/1p1P4/2n3P1/P1R2PBP/6K1 w - - 5 25

You Played: Bc6
Engine Best: Bd2
Eval Swing: -369 cp
Variation: Bd2 e6 Bxc3 bxc3

Refutation: Nb8 Bb7 Rxg5 a3

Coach Explanation

Bc6 is a mistake. The correct move is Bd2, preventing Nb8. After Bc6, Black can play Nb8 followed by Bb7 and Rg5, giving them the advantage. After Bd2, Black's best move is e6 followed by Bxc3 bxc3, which is better than the line where you played Bc6.

Moment 4 — Blunder CRITICAL ↗

Hanging Piece

FEN: 8/3Bpk1p/1p4p1/6B1/3P4/1p4P1/n4P1P/6K1 w - - 0 28

You Played: Bc1
Engine Best: Ba4
Eval Swing: -1053 cp
Variation: Ba4 e6 Bxb3 Nc3

CRITICAL: Your move allowed the opponent to immediately capture your White Bishop on c1.

Refutation: Nxc1 Ba4 Ne2+ Kf1

Coach Explanation

BLUNDER: You hung your Bishop. The opponent can simply take it with Nxc1.

Ba4 is superior because it develops with tempo. The best line is Ba4 e6 Bxb3 Nc3.

Moment 5 — Blunder CRITICAL ↗

Positional

FEN: 8/4pk1p/1p4p1/8/3P4/6P1/npB2P1P/6K1 w - - 2 31

You Played: Bb1
Engine Best: Bb3+
Eval Swing: -892 cp
Variation: Bb3+ Kf6 Bxa2 Kf5

Refutation: Nc3 Bc2 Ke6 f4

Coach Explanation

Bb1 is a mistake because it allows the opponent to play Nc3 followed by Bc2. Bb3+ is better because after Bb3+ Kf6 Bxa2, Black is forced to play Kf5, which is a better position than after Bb1.

Recurring Patterns

This game continues the established pattern of tactical errors, primarily involving missed opportunities for positional advantage and pins. The missed Bxa8 and Bd2 opportunities align with the previous high frequencies of missed positional advantages and missed pins. However, this game also introduces a "Hanging Piece" blunder (the Bishop), a type of error that, while always present, has not been as prominent in the 20-game history as positional tactics or pins. This latest game could suggest a potential emerging trend toward overlooking simple material threats.

Annotated PGN

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        [Event "Live Chess"]
[Site "Chess.com"]
[Date "2026.03.30"]
[White "erivera90"]
[Black "Moby154"]
[Result "1-0"]

1. c4 {-0.11} b6 {+0.69} 2. Nc3 {+0.56} Bb7 {+0.69} 3. Nf3 {+0.37} g6 {+0.75} 4.
g3 {+0.22} Bxf3 {+0.85} 5. exf3 {+0.80} Bg7 {+0.95} 6. Bg2 {-0.47} Bxc3 {+1.55}
7. bxc3 {+1.35} d5 {+2.64} 8. cxd5 {+2.21} Qxd5 {+2.54} 9. d4 {+1.53} Nd7
{+2.30} 10. O-O {+2.10} Rd8 {+2.24} 11. f4 {+2.01} Qc4 {+1.98} 12. Be3 {+1.39}
Qxc3 {+2.07} 13. Qa4 {+2.04} a5 {+2.38} 14. Rac1 {+2.19} Qb4 {+2.57} 15. Qxb4
{+2.64} axb4 {+2.67} 16. Rxc7 {+2.85} Ngf6 {+3.24} 17. Rfc1 {+2.17} O-O {+2.11}
18. f5 {+1.89} Ra8 {+5.18} 19. R1c2 $6 {+2.83 Missed Losing Exchange · best:
Bxa8} Ra5 {+2.80} 20. fxg6 {+2.29} fxg6 {+3.39} 21. Rc8 $6 {+0.12 Missed Pin ·
best: Bd2} Rxc8 {+0.11} 22. Rxc8+ {+0.09} Kf7 {+0.05} 23. Rc2 {+0.05} Nd5
{+0.03} 24. Bg5 {+0.00} Nc3 {+0.02} 25. Bc6 $4 {-3.63 Positional · Nb8} Rxa2
{+4.34} 26. Rxa2 {+4.30} Nxa2 {+4.23} 27. Bxd7 {+3.24} b3 {+4.97} 28. Bc1 $4
{-5.46 Hanging Piece · Nxc1} Nxc1 {-5.42} 29. Ba4 {-5.69} b2 {-5.03} 30. Bc2
{-5.16} Na2 {+3.49} 31. Bb1 $4 {-5.40 Positional · Nc3} Nb4 {-5.02} 32. f4
{-5.16} Ke6 {-4.22} 33. Kf2 {-4.94} Kd5 {-4.17} 34. Ke2 {-4.95} Kxd4 {-5.31} 35.
Kd2 {-5.22} b5 {-4.94} 36. h3 {-5.40} Kc4 {-3.94} 37. h4 {-4.94} Kb3 {-4.45} 38.
Kd1 {-5.81} Kc3 {-5.05} 39. g4 {-5.58} Nd3 {-4.69} 40. h5 {-5.94} Nf2+ {-6.06}
41. Ke2 {-6.17} Nxg4 {-6.55} 42. hxg6 {-6.58} hxg6 {-6.41} 43. Kf3 {-6.57} 1-0
    