CBG Pro

about

description

CBG Pro is the complete GNU Backgammon engine on Android -- and 1.0 is a major update that turns a strong backgammon app into the most capable analysis and training tool on the platform. It is not "based on" GNU Backgammon: it IS GNU Backgammon 1.08.003, vendored verbatim, with neural-net weights byte-identical to the desktop release. Every number on screen is the engine's own. Entirely offline -- the app does not even request the network permission. Free software, GPL-3.0, with reproducible builds verified by F-Droid's own pipeline against the developer's published binary. New in the 1.0 major update: * Regulation rollouts on your phone: 1296-trial, cubeful, variance-reduced, quasi-random -- the discipline desktop analysts use -- seed-reproducible, with the desktop-comparison harness published in the source repository. * The Coach: every move judged against the engine -- best, fine-but-not-best (with what beat it), or flagged with the equity it cost. Tap any better alternative and watch it play out on the board against your own move. Cube actions judged too. * Position set-up editor: build any position by hand, or paste a GNU BG ID, Match ID, or XGID from a forum or a book. Chequer rankings with dice on; double/take/drop equities with dice off. * Your Personal Stats: match statistics computed by gnubg's own analysis -- error rates, luck, cube handling -- with every number labeled by what it is. No invented metrics. * Your career, signed: finished matches enter a tamper-evident, cryptographically chained record. Your results, provable, in plain files you own. * A tournament match clock (delay clock), offered upstream to the GNU Backgammon project itself. The foundation, as always: * Full matches at any length, seven strength levels from Beginner to Grandmaster. * Complete cube play, Crawford, Jacoby, beavers, automatic doubles, and the canonical match-equity tables: Kazaross-XG2, Woolsey, Jacobs & Trice, Snowie, and the rest of gnubg's set. * Save and review matches as standard SGF -- step through what you played, what the engine preferred, and what it cost. Files open unchanged in desktop GNU Backgammon and Backgammon Studio. * Your matches and your career live in a folder you choose -- plain files, readable by anything, in twenty years too. Nothing is ever sent anywhere; there is no "anywhere" in this app. Requires Android 12 or newer and a 64-bit ARM device.

publisher

78ce6faa72264387284e647ba6938995735ec8c7d5c5a65737e55130f026307d

first seen

2026-09-22T16:40:58.140181+00:00

last event

2026-10-08 09:22 UTC

install

zapstore.dev or any Zapstore-compatible client

topics

#board game

source & build

repository

not published

arch flags

android-arm64-v8a

manifest

missing

releases (kind 30063)

2 releases indexed; latest 1.0.3.

version	channel	released	event
1.0.3	main	2026-10-08 09:22 UTC	c3f12ab2…
1.0.2	main	2026-09-14 08:53 UTC	7877ee37…

assets & verification

Every app, release and asset event is schnorr-verified (NIP-01 id + signature) before it enters the catalog, and assets are content-addressed by sha256. We subscribe read-only to the catalog relay — never write to it.

1.0.3 — com.clavierhaus.gnubg_103.apk

sha256

8b643e5681a798c816e7852cb405895aa8c3da0833b905a1cfcb466b22a91178

size

37.4 MB

archs

android-arm64-v8a

version code

103

apk cert sha256

367c17e5719674d6c50511b6e41de8026cf762a63d065ed003775285333ab5e3

download

com.clavierhaus.gnubg_103.apk

1.0.2 — com.clavierhaus.gnubg_102.apk

sha256

a951da343ca91f10512d888802123cb040c4be72dc3d3eb58ce8ddfab80d78ff

size

37.4 MB

archs

android-arm64-v8a

version code

102

apk cert sha256

367c17e5719674d6c50511b6e41de8026cf762a63d065ed003775285333ab5e3

download

com.clavierhaus.gnubg_102.apk

Showing the newest 2 asset descriptors; the full set is in /api/apps/78ce6faa…