diff --git a/examples/harbor-house/coldstart-500000-s2.log b/examples/harbor-house/coldstart-500000-s2.log
new file mode 100644
index 0000000..42b3d4f
--- /dev/null
+++ b/examples/harbor-house/coldstart-500000-s2.log
@@ -0,0 +1,53 @@
+WARNING: 418 m2 per storey needs ~86 m of daylit wall; the plot's non-private perimeter gives 53 m. Roughly 49 m2 of courtyard closes the gap. (DESIGN.md §38.3)
+seed         : /home/bruno/src/homemaker-layout/examples/harbor-house/init.dom
+programme    : harbor-house
+budget       : 500000
+pop          : 16
+child_budget : 80
+workers      : 1
+rng seed     : 2
+leaf sharing : True (factor=3)
+superpose    : False
+multi_use    : False
+conn grade   : False
+use tiers    : False
+bridge circulation : False
+ruin recreate      : False
+collapse in-search : True
+shapecurve warmstart : False
+shapecurve prune     : False
+output       : /home/bruno/src/homemaker-layout/examples/harbor-house/coldstart-500000-s2.dom
+[    80 evals] best 1.05967e-31 (fails 96) via construct/0
+[   240 evals] best 2.81838e-21 (fails 58) via construct/2
+[  1840 evals] best 1.08828e-20 (fails 56) via swap 0/rrl
+[  2000 evals] best 2.18589e-20 (fails 55) via swap 0/lrll
+[  7680 evals] best 2.22979e-20 (fails 55) via core_undivide noop
+[  8320 evals] best 2.27491e-20 (fails 55) via level_fix noop
+[  8560 evals] best 5.4761e-20 (fails 54) via swap 0/rrr
+[  9440 evals] best 5.58534e-20 (fails 54) via core_undivide noop
+[ 10720 evals] best 2.15034e-19 (fails 52) via crossover rlr<->rrl
+[ 14400 evals] best 4.08743e-19 (fails 52) via core_divide noop
+[ 15120 evals] best 4.18415e-19 (fails 52) via core_divide noop
+[ 15680 evals] best 4.27242e-19 (fails 52) via core_undivide noop
+[ 15760 evals] best 4.34498e-19 (fails 52) via crossover rlrr<->rlrlr
+[ 15920 evals] best 3.34447e-19 (fails 51) via core_divide noop
+[ 17920 evals] best 3.46301e-19 (fails 51) via core_divide noop
+[ 19840 evals] best 6.00603e-18 (fails 48) via crossover rlr<->lrlll
+[ 21840 evals] best 6.12702e-18 (fails 48) via crossover rlr<->lrlll
+[ 22640 evals] best 6.20329e-18 (fails 48) via core_divide noop
+[ 23200 evals] best 6.28822e-18 (fails 48) via core_divide noop
+[ 23440 evals] best 6.36832e-18 (fails 48) via level_fix noop
+[ 24640 evals] best 6.36835e-18 (fails 48) via level_retype 1/llll<->0/llll
+[ 28400 evals] best 6.82917e-18 (fails 48) via swap 0/lrll
+[ 28560 evals] best 1.141e-17 (fails 47) via divide 0/rrrr
+[ 28880 evals] best 1.15021e-17 (fails 47) via level_fix noop
+[ 29680 evals] best 1.15671e-17 (fails 47) via core_divide noop
+[ 31520 evals] best 1.15684e-17 (fails 47) via core_divide noop
+[ 31680 evals] best 1.16014e-17 (fails 47) via crossover lrllr<->rrlr
+[ 76800 evals] best 4.93845e-17 (fails 45) via rotate 0/l
+[ 77920 evals] best 4.97739e-17 (fails 45) via core_divide noop
+[ 83440 evals] best 5.24758e-17 (fails 45) via level_fix noop
+[ 84000 evals] best 1.02117e-16 (fails 44) via crossover rllr<->lllr
+[ 85520 evals] best 1.02502e-16 (fails 44) via core_divide noop
+[ 87120 evals] best 1.0251e-16 (fails 44) via level_retype 0/rllr<->1/lrrl
+[112240 evals] best 1.03579e-16 (fails 44) via core_divide noop
diff --git a/examples/health-centre/coldstart-500000-s1.log b/examples/health-centre/coldstart-500000-s1.log
index 14871e6..23ccc42 100644
--- a/examples/health-centre/coldstart-500000-s1.log
+++ b/examples/health-centre/coldstart-500000-s1.log
@@ -136,3 +136,7 @@ output       : /home/bruno/src/homemaker-layout/examples/health-centre/coldstart
 [235280 evals] best 0.000704214 (fails 6) via level_fix noop
 [235360 evals] best 0.00070883 (fails 6) via level_compound_fix noop
 [235600 evals] best 0.000710322 (fails 6) via level_fix noop
+[282720 evals] best 0.000710418 (fails 6) via level_retype noop
+[283200 evals] best 0.000710928 (fails 6) via core_divide noop
+[288800 evals] best 0.000783033 (fails 6) via swap 0/llllr
+[299600 evals] best 0.000806961 (fails 6) via undivide 0/lrlr
diff --git a/examples/maple-court/coldstart-500000-s0.dom b/examples/maple-court/coldstart-500000-s0.dom
index 35e09aa..51ffefc 100644
--- a/examples/maple-court/coldstart-500000-s0.dom
+++ b/examples/maple-court/coldstart-500000-s0.dom
@@ -14,611 +14,383 @@ perimeter:
   d: null
 rotation: 0
 division:
-- 0.46414157099487474
-- 0.46414157099487474
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+- 0.5464598645587564
 height: 3.0
 elevation: 0.0
 wall_inner: 0.08
 wall_outer: 0.25
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diff --git a/examples/maple-court/coldstart-500000-s1.log b/examples/maple-court/coldstart-500000-s1.log
index 23efc1d..13eae2b 100644
--- a/examples/maple-court/coldstart-500000-s1.log
+++ b/examples/maple-court/coldstart-500000-s1.log
@@ -139,3 +139,9 @@ output       : /home/bruno/src/homemaker-layout/examples/maple-court/coldstart-5
 [272480 evals] best 6.21597e-20 (fails 55) via swap 0/lrr
 [275920 evals] best 6.23221e-20 (fails 55) via core_undivide noop
 [279920 evals] best 6.23222e-20 (fails 55) via core_undivide noop
+[290320 evals] best 2.47209e-19 (fails 53) via undivide 0/lrr
+[290640 evals] best 2.47209e-19 (fails 53) via level_retype 2/rrrrl<->0/llrlr
+[338880 evals] best 2.54027e-19 (fails 53) via undivide 0/llrll
+[344000 evals] best 2.54987e-19 (fails 53) via core_undivide noop
+[345120 evals] best 2.54991e-19 (fails 53) via core_undivide noop
+[365760 evals] best 2.54992e-19 (fails 53) via rotate 0/rrll
diff --git a/experiments/results/coldstart_baseline.tsv b/experiments/results/coldstart_baseline.tsv
index dac8f6e..563960d 100644
--- a/experiments/results/coldstart_baseline.tsv
+++ b/experiments/results/coldstart_baseline.tsv
@@ -4,3 +4,4 @@ health-centre	0	500000	4	2	2	0.0011747	130593.0	coldstart-500000-s0.dom
 harbor-house	0	500000	33	8	25	1.68969e-11	160951.3	coldstart-500000-s0.dom
 harbor-house	1	500000	43	7	36	1.44523e-15	166958.6	coldstart-500000-s1.dom
 programme-house	1	500000	1	1	0	0.0053408	17970.5	coldstart-500000-s1.dom
+maple-court	0	500000	54	18	36	5.52881e-18	224214.4	coldstart-500000-s0.dom