Betting · 10 min read
Win · Win · Win
All guides
Every practical guide and editorial explainer, ordered by the latest update.
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Betting · 7 min read
Parlay payout, price and probability: a practical check
Two worked examples for Accumulator / Parlay Calculator: inputs, calculations, rounding and the limits of the model.
Betting · 7 min read
Arbitrage arithmetic: allocation, cents and settlement risk
Two worked examples for Arbitrage / Surebet Calculator: inputs, calculations, rounding and the limits of the model.
Crypto · 7 min read
Cost-basis arithmetic: FIFO and an average-cost illustration
Two worked examples for Cost-Basis / Gain Calculator: inputs, calculations, rounding and the limits of the model.
Payments · 5 min read
UK bank impersonation and safe account scams
How to spot a fake bank call, why caller ID is unreliable, and what to do if you are asked to move money to a 'safe account'.
Casino · 5 min read
Casino Complaints: Evidence and ADR Route (GB)
Learn how to build a clear evidence file and navigate the UK Gambling Commission complaint process for licensed operators.
Casino · 5 min read
Casino Disconnection: Verify Round Status Before Replaying
Learn how to verify if a casino round was accepted or settled after a disconnection. Check records and follow GB RTS10 guidance.
Crypto · 7 min read
Slippage: quoted output, executed output and separate fees
Two worked examples for Slippage Calculator: inputs, calculations, rounding and the limits of the model.
Payments · 6 min read
What to record if an ATM takes your money but pays no (or only some) cash
Practical UK checklist to collect the evidence your bank and the Financial Ombudsman will expect when an ATM debits your account but dispenses no or only part of the cash. Includes a worked example and safe next steps.
Crypto · 7 min read
Network fees: units and a confirmation-time scenario
Two worked examples for Network Fee & Confirmation Time Estimator: inputs, calculations, rounding and the limits of the model.
Payments · 7 min read
Withdrawal and dispute timelines: reading an entered range
Two worked examples for Withdrawal / Chargeback Timeline Estimator: inputs, calculations, rounding and the limits of the model.
Dmitry Yakushev · Analysis
→Casino · 10 min read
Online Gambling Growth: What the Numbers Really Mean
Casino revenue, betting turnover and accounts measure different things. Read British market figures without confusing growth with player returns.
Betting · 6 min read
Bookmaker Margin vs Expected Value: The Math
Distinguish market overround from expected value. Learn to calculate both using hypothetical scenarios and clear formulas for betting analysis.
Payments · 7 min read
Transfer estimates: fees, cut-off and business days
Two worked examples for SEPA / SWIFT Fee & Timing Estimator: inputs, calculations, rounding and the limits of the model.
Crypto · 6 min read
Crypto Transaction Fees: Calculate the Full Cost
Learn to calculate Ethereum gas costs using EIP-1559. See worked examples for transfers and token interactions, plus service charge distinctions.
Payments · 7 min read
FX costs: the quoted rate and the visible fee
Two worked examples for FX Conversion & Hidden Markup Calculator: inputs, calculations, rounding and the limits of the model.
Casino · 6 min read
Casino Wagering Requirements: Worked Examples
Understand how wagering bases and game contributions affect bonus turnover. See clear hypothetical examples and verify your specific contract terms.
Casino · 7 min read
Slot volatility: equal RTP, different illustrative spread
Two worked examples for Slot Volatility Illustrator: inputs, calculations, rounding and the limits of the model.
Crypto · 6 min read
Disconnecting a dApp is not revoking ERC‑20 allowances: how to check and revoke
A clear, practical guide for self‑custody Ethereum ERC‑20 users explaining why disconnecting a wallet doesn’t remove on‑chain token approvals and how to check and revoke allowances safely.
Casino · 7 min read
RTP arithmetic: turnover is not a session forecast
Two worked examples for RTP / House Edge Loss Estimator: inputs, calculations, rounding and the limits of the model.
Casino · 7 min read
Wagering requirements: the base, contribution and remaining volume
Two worked examples for Wagering Requirement Calculator: inputs, calculations, rounding and the limits of the model.
Payments · 8 min read
Cancelling a subscription vs stopping recurring card payments (UK)
Clear explanation of the difference between ending a subscription contract and cancelling a card-based recurring payment (CPA), why replacing a card may not stop charges, and a practical checklist for consumers in the UK.
Casino · 6 min read
House Edge vs RTP: Mathematical Link and Examples
Clarify the inverse relationship between house edge and RTP. See how small percentage shifts alter expected losses on fixed wager totals.
Betting · 7 min read
Closing line value: a price comparison in two directions
Two worked examples for Closing Line Value (CLV) Calculator: inputs, calculations, rounding and the limits of the model.
Betting · 7 min read
Kelly and expected value: what a probability assumption changes
Two worked examples for Kelly Criterion / Staking Calculator: inputs, calculations, rounding and the limits of the model.Casino · 6 min read
RTP Explained: Calculate Expected Return
Learn to calculate theoretical RTP using hypothetical scenarios. Understand the difference between expected gross payouts and actual net results.
Betting · 7 min read
Odds conversion: two prices, four formats
Two worked examples for Odds Converter: inputs, calculations, rounding and the limits of the model.Payments · 8 min read
Recognize account takeover signs and secure payment-related accounts
How to spot suspicious access to email and payment accounts and the immediate steps to contain and recover them using official provider guidance.
Payments · 20 min read
How to prepare transaction records, correspondence and a timeline for a payment dispute
Step-by-step guidance on organising the transaction evidence, correspondence and a dated timeline to support a complaint or dispute with a bank, payment provider, merchant or ombudsman.
Dmitry Yakushev · Analysis
→Crypto · 7 min read
Bitcoin: Money Without a Central Authority
How Bitcoin changes payment verification, control over funds and responsibility for mistakes—and what to check before a transfer.
Payments · 6 min read
Nigeria: keep the records that help explain a failed electronic transfer and make a focused complaint
What to save and how to escalate when an NIP/instant transfer fails: exact evidence to gather, industry timing expectations, how to use NIBSS *565* and how to lodge a complaint with your bank and with the CBN if needed.
Payments · 8 min read
Prepare records and a clear timeline for an EFT complaint in the Philippines
A practical, regulator‑aligned guide on what evidence to gather and how to present a concise timeline when disputing an electronic fund transfer with your provider, BSP CAM, NPC or the police.
Dmitry Yakushev · Analysis
→Crypto · 7 min read
Memecoins: End or New Era? A Reader's Evidence Test
A practical test for separating memecoin narratives from disclosures, safeguards and verifiable facts before a crypto transfer.
Payments · 8 min read
How to report an unauthorised bank transfer in Malaysia — act immediately
Step-by-step guidance to notify your bank, police and the National Scam Response Centre (NSRC) to maximise chances of freezing or tracing funds after an unauthorised transfer.
Payments · 6 min read
Kenya: Keep clear records and follow a careful escalation path for mobile‑money payment complaints
What to record immediately after a mistaken or fraudulent mobile‑money payment in Kenya, how to lodge complaints with your provider, and when to escalate to the Communications Authority of Kenya or the police.
Dmitry Yakushev · Analysis
→Betting · 8 min read
Kenya Betting Winnings Tax: Check the Ticket
Use a ticket-first check for Kenya betting winnings tax: separate stake, payout and tax base before asking a payer to explain a deduction.
Dmitry Yakushev · Analysis
→Casino · 10 min read
RTP Is Not Verification: Check the Exact Slot Version
A practical way to identify the game build behind an RTP label, separate a disclosed figure from a verified record, and avoid treating a percentage as a promise.
Betting · 6 min read
Why betting markets are suspended and how postponements, abandonments and rule changes affect settlement
Clear, evidence-backed explanation of why bookmakers and exchanges suspend markets, how operators decide to void or settle bets after postponements/abandonments, and what role governing-body rulings and published settlement rules play.
Casino · 9 min read
How Casino RNG Testing Works: UKGC Standards and Limits
What UKGC-approved test houses examine in RNG and game testing, what a dated report can and cannot establish, and how to read its scope and limits.
Payments · 8 min read
What a Verification of Payee Result Means Before a SEPA Transfer
If your bank shows a Verification of Payee result before you confirm a SEPA transfer, it is comparing the name you entered with the IBAN held by the recipi
Crypto · 6 min read
Destination tags, memos and payment IDs: what they are and what happens if you omit them
Clear, practical explanation of destination tags/memos/payment IDs, why custodial services use them, how networks behave when they’re missing, and what to do if your deposit goes uncredited.
Casino · 6 min read
Deposit limits, timeouts, cooling‑offs and self‑exclusion — how they differ and how to use them
Clear, practical guide to four safer‑gambling tools: deposit limits, short timeouts, cooling‑off delays and self‑exclusion. What each does, how operators normally implement them, and when to combine tools.
Betting · 8 min read
Closing‑line value (CLV): what it measures and why it’s not a profit guarantee
Clear, evidence-led explanation of closing‑line value, how to measure it, why market moves into the close contain information, and why beating the close is a process metric — not an automatic path to profit.
Crypto · 5 min read
Spot and stop address‑poisoning, clipboard‑replacement and wallet phishing before you send crypto
How address‑poisoning, clipboard clippers and approval/phishing scams work, why they succeed, and simple, evidence‑backed checks to use before sending funds.
Casino · 6 min read
How Blackjack Rule Variations Change Probability and House Edge
Evidence-led guide explaining how common blackjack rule changes affect long-run expected return and variance. Includes a worked example, red-flag rules, and practical checklist.
Payments · 6 min read
Why a card refund can be pending — and when it will post
Clear, evidence‑based explanation of where delays happen when a merchant refunds a card payment, what “pending” means, and practical steps to get a missing credit posted.
Betting · 6 min read
How to calculate the win and place parts of an each‑way bet (including place fractions & dead‑heats)
Step‑by‑step explanation and worked examples showing how an each‑way stake splits into win and place bets, how place fractions are applied, and how dead‑heat deductions are handled under standard UK operator rules.
Crypto · 6 min read
Separate exchange withdrawal fees from blockchain network fees and estimate total transfer cost
How to tell exchange service (withdrawal) fees apart from blockchain network fees, and a step‑by‑step method to estimate the total cost before you send funds.
Dmitry Yakushev · Analysis
→Payments · 11 min read
3-D Secure 2 Gateway Errors: What They Mean
A practical way to separate 3DS authentication from authorization, identify the hand-off, and collect useful payment-support records.
Casino · 6 min read
Understand maximum-win caps, maximum-bet clauses and withdrawal limits in bonus terms
What max-win, max-bet and withdrawal limits mean for your bonus, how they interact with wagering and game limits, and a short checklist to check before you claim an offer.
Payments · 6 min read
How to identify unfamiliar merchant descriptors on your card statement before disputing
Practical, evidence-based steps to decode truncated or odd-looking merchant names on card statements, use issuer tools, and preserve your dispute rights under FTC/FCBA timelines.
Betting · 8 min read
Understanding the Kelly criterion, fractional Kelly and estimation risk
A concise, evidence-led guide to the Kelly criterion, why practitioners use fractional Kelly, and how estimation errors increase bankroll risk — with worked examples and practical safeguards.
Crypto · 8 min read
How stablecoin pegs work — de‑peg risks, liquidity and redemption limits
Clear, evidence‑based guide to how stablecoins maintain a $1 peg, why de‑pegs happen, and how reserve liquidity, redemption rules and operational limits change risk.
Dmitry Yakushev · Analysis
→Casino · 14 min read
Aviator, Chicken Road and Crash Games: What Actually Changes — and What Does Not
A practical guide to verifying crash-game rules, RTP, result methods and operator claims — and why a game title or predictor is not evidence.
Casino · 6 min read
How progressive jackpots grow, trigger and change game RTP and volatility
A clear, evidence‑led explanation of how progressive jackpots are funded, the common trigger models, and how they alter base‑game return and variance — with a worked numeric example you can reproduce.
Dmitry Yakushev · Analysis
→Payments · 15 min read
Payment Company Jurisdiction: Which Country Governs Your Account?
Learn how to identify the legal entity, regulator, cross-border permission, safeguarding arrangement and complaint route behind a payment account.
Payments · 6 min read
How e‑wallet fees, FX and processing stages stack up
Clear breakdown of the fee layers, currency conversion models and processing steps that affect cost and timing when you pay with an e‑wallet.
Betting · 8 min read
Dead heats, pushes and void bets: how settlements change returns
Clear, operator-based explanations of dead-heat, push and void settlements — with worked examples showing how they affect single bets and accumulators, and practical steps to avoid surprises.
Crypto · 6 min read
What happens if you send crypto to the wrong address or network — and what can be done
Practical, evidence‑based guide to what occurs when crypto is sent to the wrong address or chain, who can recover it, and safe steps to take now.Casino · 6 min read
How crash games work: multipliers, cash‑outs and assessing risk
A concise, evidence‑led guide to how modern crash games generate multipliers, what cashing out means, why past rounds don't predict the next crash point, and what to check to verify outcomes and assess risk.
Casino · 8 min read
How game contribution percentages change the real cost of wagering requirements
A clear explanation of what game contribution percentages mean, how to calculate the actual amount you must wager, worked examples, and practical checks to protect yourself when accepting casino bonuses.
Payments · 8 min read
How to understand and trace pending, delayed, returned and rejected bank transfers
Clear, practical guidance on what each status means, which identifiers banks need to trace a transfer (ACH trace number, UETR, MT103/pacs.008), and the exact information to give your bank to start an investigation.
Betting · 8 min read
Understand Asian Handicap quarter lines and settlement: full win, half-win, push, half-loss, full loss
A clear, practical guide to how quarter-goal Asian handicap lines are settled. Learn how stakes are split, why quarter lines exist, and see worked examples for +0.25 and −0.75 that show full win, half-win, push, half-loss and full loss outcomes.
Crypto · 6 min read
Hot wallets, cold wallets and custodial accounts: how they differ and what risks remain
Clear, evidence-led comparison of hot wallets, cold (hardware/offline) wallets and custodial accounts, their security trade-offs, and practical allocation guidance. Sources: CISA, Coinbase SEC filing, Ledger.
Casino · 6 min read
Roulette probabilities and house edge: single‑zero vs double‑zero vs triple‑zero
Clear, evidence‑based comparison of probabilities and house edge on single‑zero (European), double‑zero (American) and triple‑zero roulette wheels, with worked dollar examples and practical limits.Payments · 6 min read
Understanding 3‑D Secure (3DS): how authentication works and why payments fail
A concise, evidence‑backed guide to EMV® 3‑D Secure (3DS2), common authentication failures and practical fixes for merchants and engineers.
Betting · 6 min read
How to calculate expected value (EV) in betting — and why EV is not a guaranteed profit
A practical guide to computing expected value (EV) for bets, reading results correctly, and understanding the difference between mathematical expectation and guaranteed profit.
Casino · 6 min read
Understand slot hit frequency — why frequent wins don’t mean higher returns
Clear, evidence-based explanation of hit frequency, RTP and volatility — and a simple numeric example showing why games that pay often can still have the same house edge as games that pay rarely.
Casino · 6 min read
How to verify whether a gambling operator has a valid licence
A practical, regulator-backed guide to checking if an online casino or gambling site is legitimately licensed. Use official regulator registers first, match company details and licence type, and treat unverified claims as suspicious.
Payments · 6 min read
Dynamic Currency Conversion: how card currency choices affect what you pay
Clear, evidence-led explanation of Dynamic Currency Conversion (DCC), who sets rates and markups, how to compare DCC vs on‑network conversion, and practical steps to avoid unnecessary cost.
Payments · 7 min read
Understand pending card payments, authorisation holds and completed charges
A practical guide to what 'pending' means on your card, why authorisation holds appear, how long holds typically last, and what happens when an authorised amount becomes a completed charge.
Payments · 10 min read
Chargeback vs refund: how card payment disputes work
Understand the difference between a merchant refund, a card dispute and a chargeback, including evidence, timelines and practical next steps.
Crypto · 10 min read
Crypto transaction confirmations: pending, confirmed and final
Understand transaction hashes, pending status, confirmations and finality before sending or troubleshooting a crypto transfer.
Casino · 10 min read
Slot volatility explained: variance, hit frequency and session swings
Understand what slot volatility describes, how it differs from RTP and hit frequency, and why short sessions can vary sharply.Payments · 6 min read
Payment fees and processing time: compare the real cost
A checklist for comparing wallets, cards and transfers beyond the headline fee.
Crypto · 9 min read
Crypto exchange fees: trading, spreads and withdrawals
How to compare the full cost of buying, selling and moving crypto.
Betting · 9 min read
Bankroll management: set a gambling budget and limits
A safety-first guide to separating a gambling budget, setting firm limits and recognizing when to stop.
Betting · 8 min read