CAISSA RESEARCH
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Pattern synthesis · Hangs a piece

Generated 2026-05-01 05:28 UTC · brianhliou · 30 of 81 sampled · model heuristic-v1 · 0 in / 0 out tokens
Top diagnosis: 81 leaving pieces hanging positions across 4 openings
1. leaving pieces hanging in the Indian Defense: Accelerated London System (3 positions)
3 of your leaving pieces hanging mistakes happen in this opening, averaging 264cp lost. Most-played: dxe5 ×1, dxe6 ×1, Rxd6 ×1. Engine prefers: Nh5 ×1, g4 ×1, Rc8 ×1.
Drill: Step through these 3 positions; name what makes the engine's move stronger before revealing it.
#21 · ply 54 · white
. . . r . . k .
p . . . . . p p
. p R r p . . .
. . . . . p . .
. . . . . q . .
. P . . . P . .
P . . . Q P . P
. . R . . . K .
Rxd6Rc8
drop Δ5.37 · Indian Defense: Accelerated London System
#2 · ply 9 · black
r n b q k . . r
p p p . p p b p
. . . p . n p .
. . . . P . . .
. . . P . B . .
. . N . . . . .
P P P . . P P P
R . . Q K B N R
dxe5Nh5
drop Δ1.27 · Indian Defense: Accelerated London System
#8 · ply 30 · white
. . r q . r k .
. . n . . p b p
. . . p p . p .
p . p P . . . n
P p P . P . . .
. . . . B N . .
. P Q N . P P P
. . R . . R K .
dxe6g4
drop Δ1.27 · Indian Defense: Accelerated London System
2. leaving pieces hanging in the Caro-Kann Defense (2 positions)
2 of your leaving pieces hanging mistakes happen in this opening, averaging 416cp lost. Most-played: Nh4 ×1, Nc5 ×1. Engine prefers: g3 ×1, Ne5 ×1.
Drill: Step through these 2 positions; name what makes the engine's move stronger before revealing it.
#18 · ply 19 · black
r . b . . r k .
p p . n p p b p
. . p . . n p .
. . . . . . . .
. . . . P . . .
. . P . B P . .
P P K N . . P P
. . . R . B N R
Nc5Ne5
drop Δ4.36 · Caro-Kann Defense
#5 · ply 14 · white
r . . q k b n r
p p . . . p p .
. . n . p . . .
. . p p P b . p
. . . . . . . .
. . . P . N . P
P P P N Q P P .
R . B . K B . R
Nh4g3
drop Δ3.95 · Caro-Kann Defense
3. leaving pieces hanging in the Sicilian Defense: Alapin Variation (2 positions)
2 of your leaving pieces hanging mistakes happen in this opening, averaging 524cp lost. Most-played: Nd3 ×1, Bxd4 ×1. Engine prefers: Rd2 ×1, Rxd4 ×1.
Drill: Step through these 2 positions; name what makes the engine's move stronger before revealing it.
#9 · ply 60 · white
r . . . . . k .
. p . P r . p p
. . . . . p . .
p P . n N . . .
. . . . . P . .
P q . . B Q . .
. . . . . R K .
. . . . R . . .
Nd3Rd2
drop Δ8.92 · Sicilian Defense: Alapin Variation
#29 · ply 52 · white
r . . q . . . k
. p . . b . p p
p . n . . r . .
. . . . . p . .
. . B n . p . .
. . N . B . . .
. P . R . . P P
. . . Q . R K .
Bxd4Rxd4
drop Δ1.57 · Sicilian Defense: Alapin Variation
4. leaving pieces hanging in the Italian Game: Classical Variation, Giuoco Pianissimo (2 positions)
2 of your leaving pieces hanging mistakes happen in this opening, averaging 142cp lost. Most-played: Bd6 ×1, Nxg3 ×1. Engine prefers: Bg4 ×1, fxe6 ×1.
Drill: Step through these 2 positions; name what makes the engine's move stronger before revealing it.
#13 · ply 25 · black
r . b q r . k .
p p p . b p . .
. n n . . . . p
. . . . p . p .
. . . . N . . .
. B P P . N B .
P P . . . P P P
R . . Q . R K .
Bd6Bg4
drop Δ1.83 · Italian Game: Classical Variation, Giuoco Pianissimo
#27 · ply 25 · black
r . . q . r k .
b p p . . p . .
p . n p B . . p
. . . . p . p n
P P . . P . . .
. . P P . N B P
. . . N . P P .
R . . Q K . . R
Nxg3fxe6
drop Δ1.02 · Italian Game: Classical Variation, Giuoco Pianissimo