CAISSA RESEARCH
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Themes · brianhliou

Generated 2026-05-01 05:28 UTC · 2624 losses (928 analysed) · 923 first-deviations classified · 12 themes
Each section groups your first-deviation losses by type of mistake rather than position. Themes ranked by avg drop × √(n): punishes both severity and frequency. A pattern with n=10 average-Δ1.50 mistakes ranks higher than one n=1 game-ending blunder.
Drops to mate n=7 · avg drop Δ20.00 · max Δ20.00 · severity 5292
Walked into a forced mating sequence.
late_middlegame ×4early_middlegame ×1middlegame ×2 avg time 6.9s quick (<2s) ×2 long-think (≥15s) ×1
ply 40 · white · late_middlegame blunder mate -1 
r . . . r . k .
p . . . . . p p
. . . . . p b .
p . . p . . . .
. . . N . . . .
. . P . . . . .
. P . R . P P P
R . . . . . K .
you: Rxa5 → eng: f3
drop Δ20.00 · 1.3s · Sicilian Defense: Alapin Variation
TYQ8THKv
ply 42 · white · late_middlegame mate -4 
r . . . . . r .
. . . . . p . k
. . n p . . . p
p p p . p . . .
. . . . P . K .
. P P P . . P .
. P . N . P . .
R . . . . . . R
you: Kf5 → eng: Kf3
drop Δ20.00 · 6.8s · Pirc Defense
ozKgPw7U
ply 52 · white · late_middlegame mate -5 
r . . . k r . .
. p . . . . p Q
. q . . p P . .
. . . p . . P .
. . . . . . . .
p P . . . . . R
P . . N . P . P
. . . . R . K .
you: fxg7 → eng: Qxg7
drop Δ20.00 · 11.5s · Queen's Pawn Game
5g5yWpvu
ply 19 · black · early_middlegame blunder mate 4 
r . b q r . k .
p p . n . p p .
. . p b p n . p
. . . p . . N .
. . P . . . P P
. P N . P . . .
P B Q P . P . .
R . . . K B . R
you: Nxg4 → eng: Nf8
drop Δ20.00 · 21.8s · Réti Opening: Anglo-Slav Variation, Gurevich System
y79WkwOp
ply 24 · white · middlegame mate -2 
. . k r . . . r
p p p . . p . .
. . n b . q . p
. . . . . . p .
. . . . . . . .
. . P . . N P .
b P Q N P P B P
. . K R . . . R
you: b3 → eng: Ne4
drop Δ20.00 · 1.1s · Englund Gambit
0FfxUs9G
Middlegame calculation n=152 · avg drop Δ3.17 · max Δ9.51 · severity 3913
Middlegame drop ≥ 200cp without an obvious motif — suggests a calculation miss.
late_middlegame ×77middlegame ×52early_middlegame ×23 avg time 8.5s quick (<2s) ×24 long-think (≥15s) ×26
ply 63 · black · late_middlegame 
. . r . . . . k
. . . . q . p .
p r . . p . . p
. p . . . . . Q
. . . . B . . .
. . . . . . . .
P P . . . P P P
. . . . R . K .
you: e5 → eng: Qb4
drop Δ9.51 · 5.6s · Caro-Kann Defense: Accelerated Panov Attack, Modern Variation
3P6vy9Tj
ply 46 · white · late_middlegame blunder 
. . . r . . k .
Q . . . . . p .
. . . . p . . q
. . . . . r . .
. . p . . P . .
. . P . . . P .
P P . . . P . .
R . . . R . K .
you: Re2 → eng: Qe7
drop Δ8.51 · 9.4s · Indian Defense: London System
oeaskCf7
ply 22 · white · middlegame 
r . b . . r k .
p p . n . . p p
. . p . p . . .
. . . p N p . .
. . . P n P . q
. . P B . P . .
P P . N Q . P P
R . . . K . . R
you: Kf1 → eng: g3
drop Δ7.51 · 3.0s · Queen's Pawn Game: Accelerated London System
0IOsRTPB
ply 42 · white · late_middlegame blunder 
. . k . r . . .
p p q . . p p .
. . . . . . . p
P . . p . . r n
. . . . . . . .
. Q P B . P P .
. P . . . P K .
R . . . . R . .
you: Rfd1 → eng: Qa4
drop Δ7.14 · 22.2s · Indian Defense: Accelerated London System
Jm1XURVf
ply 57 · black · late_middlegame blunder 
. . . . . . k .
P . . . p p . p
. . . . . b p .
. . Q . . . . .
q . . . . . . .
. . P . . P . .
. r . . . P B .
. . . . R K . .
you: Kg7 → eng: Ra2
drop Δ6.25 · 5.7s · Sicilian Defense: Hyperaccelerated Dragon
50zbnc3J
Middlegame positional drift n=352 · avg drop Δ1.34 · max Δ1.98 · severity 2505
Middlegame drop under 200cp — small inaccuracies that compound into losses.
late_middlegame ×125middlegame ×134early_middlegame ×93 avg time 8.2s quick (<2s) ×74 long-think (≥15s) ×51
ply 33 · black · late_middlegame blunder 
. . r q . r k .
. . . b . p . p
p . . . p . p .
. p . p P . . .
. . . . . P n .
P . N Q P . . .
. P . . . . P P
. B R . . R K .
you: Qh4 → eng: b4
drop Δ1.98 · 9.2s · Slav Defense
KfVyCQWq
ply 19 · black · early_middlegame blunder 
r n . . . r k .
p p . . b p p p
. P p . p n . .
. . P p . b . .
. . . P . . . .
. . N . . N . .
. P . . P P P P
R . B . K B . R
you: a6 → eng: Na6
drop Δ1.98 · 1.1s · Slav Defense: Modern Line
XCQUYKXz
ply 30 · white · middlegame 
. k . r . r . .
p p . . q . . p
. . n p b n . .
P . . p . . . .
. . . . . . p N
. . P . P . B .
. P . . B P P P
R . . Q K . . R
you: Qb3 → eng: a6
drop Δ1.98 · 1.8s · Queen's Pawn Game: Accelerated London System
5264zubx
ply 46 · white · late_middlegame 
. . r . r . k .
. b q n p p b .
p p . p . . . p
. . n P . . p .
P . P N . . P .
. P N . . . . P
. . . . . P B B
. Q . R R . K .
you: Qc2 → eng: b4
drop Δ1.98 · 26.4s · London System
3XiJB7cN
ply 57 · black · late_middlegame 
n . . . r . . .
Q p p . r p k .
. . . p . q . .
. P . P . . p .
. . . . P . . .
. . . . . . P .
. . . . . P B .
. . R . R . K .
you: b6 → eng: Qe5
drop Δ1.97 · 3.1s · King's Indian Defense: Fianchetto Variation
4ietOGhY
Hangs a piece n=81 · avg drop Δ2.23 · max Δ9.75 · severity 2006
Moved a piece to a square where it can be captured for less than its value.
late_middlegame ×25middlegame ×33opening ×13early_middlegame ×9endgame ×1 avg time 7.5s quick (<2s) ×13 long-think (≥15s) ×11
ply 76 · white · late_middlegame 
. . . . . . . .
. . . . . k . .
R . p . . b p .
. . q p p . . p
. . . . . . . P
. . P . . . P .
. P . . Q P K .
. . . . . . . .
you: Ra7+ → eng: b4
drop Δ9.75 · 1.2s · French Defense: Knight Variation
200diC1C
ply 60 · white · late_middlegame blunder 
r . . . . . k .
. p . P r . p p
. . . . . p . .
p P . n N . . .
. . . . . P . .
P q . . B Q . .
. . . . . R K .
. . . . R . . .
you: Nd3 → eng: Rd2
drop Δ8.92 · 11.9s · Sicilian Defense: Alapin Variation
XAZvCb7z
ply 28 · white · middlegame 
r . . . . r k .
p p . n p p b p
. . . . . . p .
q . p . . b . .
. . B P . B . .
. P R . P N . P
P . . Q . P P .
. . . . R . K .
you: dxc5 → eng: g4
drop Δ6.31 · 5.4s · Grünfeld Defense: Three Knights Variation, Hungarian Variation
33sB93hg
ply 2 · white · opening 
r n b q k b n r
p p p p . p p p
. . . . . . . .
. . . . p . . .
. . . P . . . .
. . . . . . . .
P P P . P P P P
R N B Q K B N R
you: Bf4 → eng: dxe5
drop Δ6.07 · 0.6s · Englund Gambit
4mFgMb08
ply 54 · white · late_middlegame 
. . . r . . k .
p . . . . . p p
. p R r p . . .
. . . . . p . .
. . . . . q . .
. P . . . P . .
P . . . Q P . P
. . R . . . K .
you: Rxd6 → eng: Rc8
drop Δ5.37 · 3.6s · Indian Defense: Accelerated London System
37bctSk3
Misses a capture n=86 · avg drop Δ1.89 · max Δ5.12 · severity 1755
Engine recommended a capture; you played a quiet move instead.
early_middlegame ×14late_middlegame ×28opening ×13middlegame ×29endgame ×2 avg time 9.7s quick (<2s) ×16 long-think (≥15s) ×14
ply 43 · black · late_middlegame 
r . . . k . . r
. p . . . . . .
. . n . . p N .
. p . p b P . p
b . p B . . . .
P . P . . . . .
. P . . B . P P
. . R . . R K .
you: Rg8 → eng: Nxd4
drop Δ5.12 · 7.8s · Caro-Kann Defense: Advance Variation, Short Variation
0CJe1WDB
ply 34 · white · late_middlegame blunder 
r . . . . r k .
p b . . q . . p
. . . b N p p .
. . p . n . . .
. . . . . . . Q
. . P B . . B .
P P . . . P P P
. . . R K . . R
you: O-O → eng: Bxe5
drop Δ4.67 · 36.6s · Indian Defense: London System
AaEcVLVM
ply 28 · white · middlegame 
r . . q r n k .
p b p . . p b .
. p . p . . p p
. . P . . . . .
. P . P n . . .
. . N . . N . P
P . . . B P P B
. R . Q . R K .
you: Qc2 → eng: Nxe4
drop Δ4.61 · 16.1s · London System, with Be2
0sEngidB
ply 24 · white · middlegame blunder 
r . . q k . . r
p p . . . p p p
. . P . p . . .
. . . . . b . .
. . B . . . . .
. . . . . N . .
P b . . . P P P
R . . Q . R K .
you: Qa4 → eng: cxb7
drop Δ4.47 · 14.4s · Queen's Gambit Declined: Marshall Defense
CTkhKGl9
ply 21 · black · middlegame blunder 
r n . . k . . r
p p p . . p p p
. . . q . n . .
. . . B . . . .
. . . . P . b .
. . N P . N b .
P P P . K . . .
R . B . . . Q R
you: Na6 → eng: Nxd5
drop Δ4.29 · 18.2s · King's Gambit Accepted: Cunningham Defense, Bertin Gambit
xjNrKwuW
Misses a discovered attack n=67 · avg drop Δ1.89 · max Δ5.27 · severity 1550
Engine had a move that opened a sliding-piece line onto a previously-unattacked enemy piece (discovered attack).
late_middlegame ×26middlegame ×27opening ×7early_middlegame ×7 avg time 8.2s quick (<2s) ×18 long-think (≥15s) ×10
ply 56 · white · late_middlegame blunder 
r . . . q . k .
p . . r . . p p
R p . . . p . .
. . . . p . . .
. . . . Q . . .
. . P . . . . P
. P . . . P P .
R . . . . . K .
you: Qc6 → eng: Rxb6
drop Δ5.27 · 3.6s · Indian Defense: London System
c63sdvAB
ply 46 · white · late_middlegame 
. . . . . r k .
. p p . . r p .
p . . p . q . p
. . . . p N . n
P P . . P . Q .
. . P . . . R P
. . . . . P P .
. . . . R . K .
you: Rf3 → eng: Qxh5
drop Δ4.91 · 5.4s · Italian Game: Classical Variation, Giuoco Pianissimo, with h6
znEoOfol
ply 31 · black · middlegame 
r . . q r b k .
p p . n . p p .
. . p . . n . p
. . . . . . . .
. . B P p . . .
. . P . . . Q P
P P . B N P P .
. . . R . R K .
you: Nh5 → eng: Nb6
drop Δ4.37 · 3.8s · Caro-Kann Defense: Main Line
1ervxS9K
ply 40 · white · late_middlegame blunder 
r . . . . . k .
. b . n . . p p
p q . . . r . .
. p . p p . . .
. . . N . . . .
. . P B . . P .
P P . . Q P . P
. R . . R . K .
you: Nc2 → eng: Bf5
drop Δ3.74 · 7.4s · Horwitz Defense
2lJxb9M3
ply 25 · black · middlegame 
r . . r . . k .
p p . . b p p p
n . . q b . . .
. . . p p . P P
. . . . . . . .
. . . P B P . .
P P P Q . . . .
R . . . K B N R
you: e4 → eng: d4
drop Δ3.56 · 7.0s · Caro-Kann Defense
48nQFgRN
Misses a fork n=30 · avg drop Δ2.39 · max Δ4.91 · severity 1307
Engine had a fork: a move attacking two pieces at once, at least one worth more than the mover.
middlegame ×13late_middlegame ×10opening ×1early_middlegame ×6 avg time 8.3s quick (<2s) ×4 long-think (≥15s) ×6
ply 38 · white · late_middlegame 
r . . r . . k .
b p . q n p p .
. . . N . n . p
. p . . p . . .
. . . . P . . .
B Q P P . N P .
. . . . . P K P
R . . . . R . .
you: Nxb5 → eng: Qxf7+
drop Δ4.91 · 4.8s · Petrov's Defense
OAk5IplF
ply 28 · white · middlegame blunder 
r . . q r n k .
p p . . . . p p
. . p b . p n .
. . . p . . . .
. . . P . . . .
. . P . . N B .
P P . . . P P P
R N . Q R . K .
you: Nbd2 → eng: Rxe8
drop Δ4.60 · 1.4s · French Defense
CKHWDych
ply 37 · black · late_middlegame blunder 
r . . q . r k .
. . . b b p p .
. . . . p . . p
. p . p N . . .
. n n P P . . .
. Q N . . . B .
. P . . . P P P
. B R . R . K .
you: Bf6 → eng: Nd2
drop Δ4.59 · 4.6s · Slav Defense: Chebanenko Variation
sxTYw7BV
ply 26 · white · middlegame blunder 
. . r q r . k .
p b p . p p b p
. p . p . n p .
. . . . . . . .
. . B P . P . .
. . P . . N P .
P P . N Q P . P
R . . . R . K .
you: a3 → eng: Bxf7+
drop Δ4.40 · 1.1s · Queen's Pawn Game
GuCuCtBb
ply 32 · white · middlegame blunder 
r . . . . r k .
p p p . . p b p
. . . q . n p .
. . . . . . . .
. . . p P N . .
. P . P . P P .
. P . . Q . B P
R . . . . R K .
you: Rfc1 → eng: e5
drop Δ3.76 · 2.2s · Pirc Defense
9tYLl81w
Misses removing a defender n=30 · avg drop Δ2.24 · max Δ6.21 · severity 1227
Engine had a capture that removed the defender of another enemy piece, leaving it hangable next move.
early_middlegame ×11late_middlegame ×10endgame ×1middlegame ×8 avg time 8.8s quick (<2s) ×5 long-think (≥15s) ×7
ply 22 · white · middlegame 
. . k r . . . r
p p p . . p p .
. . n q p . . .
. . . p . . . p
. P . P n P b .
. . P . . N P .
P . . N B P . P
R . . Q . R K .
you: Qb3 → eng: Nxe4
drop Δ6.21 · 6.2s · Queen's Pawn Game: London System
1gSzGjNN
ply 19 · black · early_middlegame 
r . . q r . k .
p b p n p p b p
. p . p . n p .
. . . . . . . .
. . . P . . . .
. . P . P B . .
P P . N . P P P
R . B Q N R K .
you: e5 → eng: Bxf3
drop Δ5.46 · 0.3s · East Indian Defense
lLvjPPJT
ply 86 · white · endgame 
. . . . . . N .
. . . k b p . p
. . p . . p . .
. . n . p . . .
. . K . P . . P
p . P . . P P .
. . . . . . . .
. B . . . . . .
you: Ba2 → eng: Nxe7
drop Δ4.79 · 2.8s · Caro-Kann Defense: Breyer Variation
K806NAD0
ply 14 · white · early_middlegame 
r . . q k . n r
p p . . . p p p
. . p b p . . .
. . . p . b . .
Q n P P . B . .
N . . . P N . .
P P . . . P P P
R . . . K B . R
you: c5 → eng: Bxd6
drop Δ4.11 · 1.8s · Queen's Pawn Game: Accelerated London System
4RdRnh5Y
ply 28 · white · middlegame 
. r b q . r k .
. . . . p p b p
. n . p . . p .
p P p P n . . .
N . P . P B P .
. . . B . . . P
. P . . N P . .
R . . Q K . . R
you: Bg3 → eng: Nxb6
drop Δ3.31 · 5.8s · Benoni Defense: Benoni-Indian Defense
24fzBeRl
Misses a pin n=31 · avg drop Δ2.07 · max Δ5.02 · severity 1151
Engine had a move that creates an absolute pin against the opponent's king.
middlegame ×12late_middlegame ×10early_middlegame ×8opening ×1 avg time 7.7s quick (<2s) ×5 long-think (≥15s) ×3
ply 23 · black · middlegame 
r . . . k b . r
p p . n p p . p
. . p q . p B .
. . . . . . . .
. . . . . . P .
. . . . . N . P
P P P . . P . .
R . B Q R . K .
you: hxg6 → eng: Qxd1
drop Δ5.02 · Caro-Kann Defense: Bronstein-Larsen Variation
YTJaLV4o
ply 45 · black · late_middlegame blunder 
. . . . r r k .
. p . n . . . .
. . p . p . p p
p . . q . p . P
. . . P . P P .
. . P N . . . .
P P . . Q . . .
. K . R . . . R
you: Rf6 → eng: Qe4
drop Δ5.00 · 6.1s · Caro-Kann Defense: Two Knights Attack
FWAHnvPW
ply 53 · black · late_middlegame 
. . . . . r . k
p . b . . . . p
. . p . r q . .
. p N n . . p .
. . . P p . . .
P . . . P p P P
. P Q B . P . K
. . . . R R . .
you: Rd6 → eng: Qf5
drop Δ4.83 · 7.5s · Van't Kruijs Opening
2AaVpiuh
ply 32 · white · middlegame blunder 
r . . q r . k .
b p p . . p p .
p . n . . . . p
. . . . p . . .
P P . . . n . .
. Q P P . N . P
. B . N . P P .
. . . R R . K .
you: Nc4 → eng: Ne4
drop Δ3.45 · 4.4s · Italian Game: Giuoco Piano
Gaox0knG
ply 29 · black · middlegame blunder 
r n b . r . . k
p p . . . . . n
. . p b p q . .
. . . . . . . Q
. . B P . . . .
. . . . . N . .
P P P . . P P P
. . . . R R K .
you: Rf8 → eng: Rg8
drop Δ3.38 · 7.4s · Caro-Kann Defense: Alien Gambit
tLUk2Uy1
Opening preparation n=62 · avg drop Δ1.42 · max Δ3.67 · severity 1115
First-15-ply position you've reached in losses without specific tactical motif.
opening ×62 avg time 5.1s quick (<2s) ×24 long-think (≥15s) ×4
ply 10 · white · opening blunder 
r . b . k b . r
p p . p p p p p
n . . . . n . .
. N p . . . . .
. . . P . B . .
. . . . P . . .
P q P . . P P P
R . . Q K B N R
you: Rb1 → eng: a3
drop Δ3.67 · 21.8s · Indian Defense: Accelerated London System
i5FWR2Kn
ply 8 · white · opening blunder 
r . b . k b n r
p p . . p p p p
. q n . . . . .
. . p p . . . .
. . . P . B . .
. . . . P N . .
P P P . . P P P
R N . Q K B . R
you: b3 → eng: Nc3
drop Δ2.66 · 7.6s · Queen's Pawn Game: Accelerated London System, Steinitz Countergambit
5Qjf13Ud
ply 11 · black · opening 
r . b q k . n r
p p p p . p p p
. . . . . . . .
. . . . n . . .
. . . P P . . .
. . N . . . . .
P P P . . K P P
R . B Q . B . R
you: Qh4+ → eng: Ng6
drop Δ2.55 · 1.8s · Three Knights Opening
3o4skwqg
ply 11 · black · opening 
r . b q k b n r
p p . . p p p p
. . n . . . . .
. . . P . . . .
. . . . p . . .
. . N . . . . .
P P . . . P P P
R . B Q K B N R
you: Nf6 → eng: Nb8
drop Δ2.41 · Slav Defense: Exchange Variation
1WwMpHTQ
ply 11 · black · opening 
r . b q k . n r
p p p . . p p .
. . n p . . . p
. . b . p . . .
P . B . P . . .
. . P P . N . .
. P . . . P P P
R N B Q K . . R
you: Nf6 → eng: a5
drop Δ2.23 · 2.3s · Italian Game: Classical Variation
5e97GuQQ
Endgame technique n=13 · avg drop Δ2.00 · max Δ3.30 · severity 723
Position was an endgame (low material). Likely a conversion or technique miss.
endgame ×13 avg time 4.6s quick (<2s) ×6
ply 61 · black · endgame blunder 
. . . . . . . .
p p . . . . p .
. . p . p p k .
. . . . . . . .
. . . P . P K .
. P P . . . . P
P . . . . . . .
. . . . . . . .
you: Kh6 → eng: b6
drop Δ3.30 · 14.1s · Caro-Kann Defense: Tartakower Variation
D0wp61Oi
ply 104 · white · endgame 
. . . . . . . .
. . . . b . . .
R . . . p k . .
. . P p N p . .
. . . P . P p .
. . . . P . K .
. . . . . . P .
. . . . . . . r
you: Nd7+ → eng: Ra8
drop Δ3.24 · 0.2s · Queen's Pawn Game: Accelerated London System
3BKabyzB
ply 64 · white · endgame blunder 
. . . . . . . r
p . p . k . . .
. . p . P p . .
. . P p . P . .
. r . P . R . p
. P . R . . p P
P . . . . . K .
. . . . . . . .
you: Kf3 → eng: Rg4
drop Δ3.24 · 1.7s · Queen's Pawn Game: Accelerated London System
VI1vjhrE
ply 57 · black · endgame blunder 
. . . . . . . .
p . . . . p k .
. p p . n . p p
. . . . p . . .
. P B . P . . .
. . P . . . P P
P . . . . P . .
. . . . . . K .
you: Nf8 → eng: Ng5
drop Δ2.44 · 1.7s · Caro-Kann Defense: Breyer Variation
rPEyn0Nq
ply 51 · black · endgame 
. . . r . . k .
p . . . . p . p
. . . . . . p .
. . . . b . . .
N . . p . n K .
. P . . . P . .
P B . . . P . P
. . . R . . . .
you: h6 → eng: Rc8
drop Δ2.09 · 5.8s · English Opening: Great Snake Variation
2Efjp4mL
Misses a check n=12 · avg drop Δ1.73 · max Δ3.84 · severity 598
Engine had a checking move available; you played something else.
early_middlegame ×3opening ×2middlegame ×4late_middlegame ×3 avg time 5.1s quick (<2s) ×3
ply 28 · white · middlegame blunder 
. . r . k b . r
p p . . . p p p
. . . . p . . .
. . . p P . q .
. . . . . . . .
. . P Q . . P .
P P . N . P P .
R . . . . R K .
you: f4 → eng: Qb5+
drop Δ3.84 · 2.3s · Queen's Pawn Game: Accelerated London System
ZW9VgU93
ply 44 · white · late_middlegame blunder 
. . r . . r . .
. . . . Q p k p
. . . . . . q .
p p . p . . . .
. . p P . . . .
P . P . . . . P
. P . . . P P .
R . . . R . K .
you: Re3 → eng: Qe5+
drop Δ2.65 · 2.2s · Queen's Pawn Game: Accelerated London System
oUX6mbIU
ply 42 · white · late_middlegame 
r . . . . r k .
p p p . n . b .
. . . p . . . p
. . . P . . p .
. . P N . p n .
. . N B . P . q
P P Q . . . . B
. . . R . R K .
you: Ne6 → eng: Bh7+
drop Δ2.12 · 8.6s · Mikenas Defense
0igWVMgc
ply 14 · white · early_middlegame blunder 
r n b q k . . r
p p . . . p b p
. . . p . n p .
. . p P . . . .
. . . . . . . .
. . . B . N . .
P P P . . P P P
R N B Q . R K .
you: Nc3 → eng: Re1+
drop Δ2.00 · 1.2s · Benoni Defense: French Benoni
iIULViBJ
ply 7 · black · opening mistake 
r . b q k b n r
p p p p . p p p
. . n . . . . .
. . . . . . . .
. . . P P p . .
. . N . . . . .
P P P . . . P P
R . B Q K B N R
you: g5 → eng: Qh4+
drop Δ1.52 · 7.0s · Vienna Gambit, with Max Lange Defense: Steinitz Gambit
EwVmDKTE
Caissa Research · M5 pattern classifier · heuristic rules over (board, user_move, engine_move, eval delta)