$100 account or $5,000 prop challenge (spec sa_spec.md). Run 2026-10-16T18:41:06.645Z. Challenge: $5,000, +8% then +5%, 10% static, 5% daily, 4 days a phase, $35 an attempt, payouts every 10 trading days at 80%, at most 12 attempts a year.

=== Part 1: traders by edge, 100000 simulated years each (250 days, 3 trades a day; $100 account: 1% risk, at least $1 (A1) or $10 (A2); challenge: $25 risk) ===

NEG (negative edge, -0.05 R a trade)
  A1 $100, min $1 : median $62.10, mean $61.93, 5th-95th pct $4.92 to $114.42; ahead 11.2%; down by half or more 36.7%; stopped 4.6%
  A2 $100, min $10: median $5.00, mean $18.02, 5th-95th pct $0.00 to $50.00; ahead 4.5%; down by half or more 95.1%; stopped 94.8%
  B  one challenge: attempts 1.00, fees $35.00; passed 10.1% (median 84 days: 46 + 24); funded breach 8.5%; paid 5.9% (first after 105 days); paid mean $15.01, median $0.00, 95th $50.00, mean if paid $255.06; net mean -$19.99, median -$35.00, 5th-95th -$35.00 to $15.00; ahead 5.9% (5.9% counting unpaid profit)
      states: failed phase 1 73.1%, failed phase 2 14.5%, funded account breached 8.5%, funded at the end 1.7%, in phase 1 at the end 1.3%, in phase 2 at the end 0.8%
  B-R buying again: attempts 3.49, fees $122.01; passed 24.2% (median 137 days: 40 + 23); funded breach 16.0%; paid 13.3% (first after 151 days); paid mean $31.47, median $0.00, 95th $250.00, mean if paid $236.57; net mean -$90.54, median -$105.00, 5th-95th -$210.00 to $145.00; ahead 9.3% (9.6% counting unpaid profit)
      states: in phase 1 at the end 75.8%, in phase 2 at the end 13.9%, funded at the end 8.9%, failed phase 1 0.7%, passed phase 1 on the last day 0.3%, failed phase 2 0.2%, funded account breached 0.1%

ZERO (no edge, 0 R)
  A1 $100, min $1 : median $97.49, mean $100.25, 5th-95th pct $44.90 to $164.99; ahead 46.7%; down by half or more 7.1%; stopped 0.3%
  A2 $100, min $10: median $5.00, mean $101.08, 5th-95th pct $0.00 to $600.00; ahead 21.8%; down by half or more 77.4%; stopped 77.0%
  B  one challenge: attempts 1.00, fees $35.00; passed 33.5% (median 90 days: 49 + 27); funded breach 21.9%; paid 25.1% (first after 112 days); paid mean $98.39, median $0.00, 95th $600.00, mean if paid $392.39; net mean $63.39, median -$35.00, 5th-95th -$35.00 to $565.00; ahead 25.1% (25.3% counting unpaid profit)
      states: failed phase 1 44.5%, funded account breached 21.9%, failed phase 2 17.4%, funded at the end 11.6%, in phase 2 at the end 2.4%, in phase 1 at the end 2.2%, passed phase 1 on the last day 0.0%
  B-R buying again: attempts 2.49, fees $87.24; passed 56.3% (median 124 days: 46 + 25); funded breach 30.6%; paid 41.4% (first after 142 days); paid mean $150.92, median $0.00, 95th $700.00, mean if paid $364.93; net mean $63.68, median -$70.00, 5th-95th -$140.00 to $665.00; ahead 35.8% (36.6% counting unpaid profit)
      states: in phase 1 at the end 51.3%, funded at the end 29.4%, in phase 2 at the end 18.3%, passed phase 1 on the last day 0.3%, failed phase 1 0.3%, funded account breached 0.2%, failed phase 2 0.1%

SMALL (small edge, +0.05 R)
  A1 $100, min $1 : median $138.51, mean $147.05, 5th-95th pct $80.90 to $239.63; ahead 84.8%; down by half or more 0.5%; stopped 0.0%
  A2 $100, min $10: median $50.00, mean $322.15, 5th-95th pct $0.00 to $999.90; ahead 49.5%; down by half or more 50.1%; stopped 49.9%
  B  one challenge: attempts 1.00, fees $35.00; passed 65.7% (median 84 days: 46 + 25); funded breach 29.1%; paid 57.5% (first after 105 days); paid mean $372.43, median $150.00, 95th $1300.00, mean if paid $647.37; net mean $337.43, median $115.00, 5th-95th -$35.00 to $1265.00; ahead 57.5% (57.9% counting unpaid profit)
      states: funded at the end 36.6%, funded account breached 29.1%, failed phase 1 19.1%, failed phase 2 12.0%, in phase 2 at the end 2.0%, in phase 1 at the end 1.2%, passed phase 1 on the last day 0.0%
  B-R buying again: attempts 1.81, fees $63.45; passed 86.0% (median 100 days: 43 + 24); funded breach 34.2%; paid 76.1% (first after 122 days); paid mean $470.85, median $350.00, 95th $1350.00, mean if paid $618.66; net mean $407.40, median $315.00, 5th-95th -$105.00 to $1315.00; ahead 72.6% (73.7% counting unpaid profit)
      states: funded at the end 61.1%, in phase 1 at the end 25.0%, in phase 2 at the end 13.2%, passed phase 1 on the last day 0.3%, funded account breached 0.3%, failed phase 1 0.1%, failed phase 2 0.0%

GOOD (good edge, +0.15 R)
  A1 $100, min $1 : median $290.63, mean $308.22, 5th-95th pct $167.79 to $504.57; ahead 99.9%; down by half or more 0.0%; stopped 0.0%
  A2 $100, min $10: median $1184.24, mean $1143.10, 5th-95th pct $0.00 to $2115.07; ahead 85.4%; down by half or more 14.6%; stopped 14.6%
  B  one challenge: attempts 1.00, fees $35.00; passed 96.6% (median 52 days: 28 + 17); funded breach 12.3%; paid 95.2% (first after 68 days); paid mean $1596.51, median $1650.00, 95th $2750.00, mean if paid $1676.42; net mean $1561.51, median $1615.00, 5th-95th $15.00 to $2715.00; ahead 95.2% (95.3% counting unpaid profit)
      states: funded at the end 84.3%, funded account breached 12.3%, failed phase 1 1.8%, failed phase 2 1.6%, in phase 2 at the end 0.0%, in phase 1 at the end 0.0%
  B-R buying again: attempts 1.16, fees $40.77; passed 99.9% (median 53 days: 28 + 17); funded breach 12.5%; paid 99.6% (first after 70 days); paid mean $1682.16, median $1650.00, 95th $2750.00, mean if paid $1688.21; net mean $1641.39, median $1615.00, 5th-95th $565.00 to $2715.00; ahead 99.6% (99.6% counting unpaid profit)
      states: funded at the end 95.4%, in phase 1 at the end 2.8%, in phase 2 at the end 1.7%, passed phase 1 on the last day 0.1%, funded account breached 0.1%, failed phase 2 0.0%, failed phase 1 0.0%

(part 1 time 21 s)

=== Part 2: gold scalper, 0.01 lot, 15 trades a day 08:00-17:00 London, exit +$5 or 40 s, no stop; 148 trading days 2026-03-24 to 2026-10-16; 10000 simulated periods each ===
expected result of a trade: random side -$0.23, the side the price moves to $0.87; break-even: skill 20.6% (right 60.3% of the time) with the spread only, 26.9% (right 63.5%) with $0.07 commission

skill 0.0%: 22200000 trades; right side 49.9% (unchanged 0.2%); +$5 exits 1.1%, 40-second exits 98.9%; mean spread $0.22; mean result -$0.23 a trade before commission; worst trade -$81.71, worst point inside a trade -$85.74
 spread only:
  A $100        : median $8.60, mean $8.23, 5th-95th pct $5.77 to $9.46; ahead 0.0%; down by half or more 100.0%; stopped 100.0%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: failed phase 1 53.7%, in phase 1 at the end 46.3%
  B-R buying again: attempts 1.52, fees $53.36; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$53.36, median -$70.00, 5th-95th -$70.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 98.7%, failed phase 1 1.3%
 with $0.07 commission:
  A $100        : median $8.62, mean $8.22, 5th-95th pct $5.62 to $9.47; ahead 0.0%; down by half or more 100.0%; stopped 100.0%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: failed phase 1 98.6%, in phase 1 at the end 1.4%
  B-R buying again: attempts 1.98, fees $69.46; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$69.46, median -$70.00, 5th-95th -$70.00 to -$70.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 99.9%, failed phase 1 0.1%

skill 10.0%: 22200000 trades; right side 54.9% (unchanged 0.2%); +$5 exits 1.2%, 40-second exits 98.8%; mean spread $0.22; mean result -$0.12 a trade before commission; worst trade -$81.71, worst point inside a trade -$85.74
 spread only:
  A $100        : median $8.29, mean $8.22, 5th-95th pct $5.35 to $9.34; ahead 0.1%; down by half or more 99.7%; stopped 99.3%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 99.9%, failed phase 1 0.1%
  B-R buying again: attempts 1.00, fees $35.04; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.04, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 100.0%, failed phase 1 0.0%
 with $0.07 commission:
  A $100        : median $8.52, mean $8.15, 5th-95th pct $5.80 to $9.39; ahead 0.0%; down by half or more 100.0%; stopped 100.0%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 87.1%, failed phase 1 12.9%
  B-R buying again: attempts 1.12, fees $39.34; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$39.34, median -$35.00, 5th-95th -$70.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 99.5%, failed phase 1 0.5%

skill 20.0%: 22200000 trades; right side 59.9% (unchanged 0.2%); +$5 exits 1.3%, 40-second exits 98.7%; mean spread $0.22; mean result -$0.01 a trade before commission; worst trade -$81.71, worst point inside a trade -$85.74
 spread only:
  A $100        : median $79.84, mean $83.28, 5th-95th pct $6.39 to $205.74; ahead 40.6%; down by half or more 38.6%; stopped 32.9%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 100.0%
  B-R buying again: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 100.0%
 with $0.07 commission:
  A $100        : median $8.05, mean $11.87, 5th-95th pct $5.07 to $44.46; ahead 0.9%; down by half or more 95.5%; stopped 91.7%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 100.0%
  B-R buying again: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 100.0%

skill 30.0%: 22200000 trades; right side 64.9% (unchanged 0.2%); +$5 exits 1.4%, 40-second exits 98.6%; mean spread $0.22; mean result $0.10 a trade before commission; worst trade -$81.71, worst point inside a trade -$85.74
 spread only:
  A $100        : median $328.76, mean $328.78, 5th-95th pct $208.99 to $448.74; ahead 99.8%; down by half or more 0.2%; stopped 0.2%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 99.0%, in phase 2 at the end 1.0%, passed phase 1 on the last day 0.0%
  B-R buying again: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 99.0%, in phase 2 at the end 1.0%, passed phase 1 on the last day 0.0%
 with $0.07 commission:
  A $100        : median $173.09, mean $171.12, 5th-95th pct $8.68 to $293.34; ahead 83.5%; down by half or more 7.3%; stopped 6.0%
  B  one challenge: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 100.0%
  B-R buying again: attempts 1.00, fees $35.00; passed 0.0% (median -- days: -- + --); funded breach 0.0%; paid 0.0% (first after -- days); paid mean $0.00, median $0.00, 95th $0.00, mean if paid --; net mean -$35.00, median -$35.00, 5th-95th -$35.00 to -$35.00; ahead 0.0% (0.0% counting unpaid profit)
      states: in phase 1 at the end 100.0%

run time 96 s
engine and independent re-implementation agree on every number of every cell