From 3568412f8f230774d0d11d7ed1c897424f95d3ef Mon Sep 17 00:00:00 2001
From: Sebastiano Tronto <sebastiano.tronto@gmail.com>
Date: Thu, 11 Nov 2021 21:37:34 +0100
Subject: Rewritten from scratch. Welocme nissy 2.0!

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+.Dd November 2021
+.Dt NISSY 1
+.Os
+.Sh NAME
+.Nm nissy
+.Nd a Rubik's cube solver and FMC assistant
+.
+.Sh SYNOPSIS
+.Nm
+.Nm
+.Ar command
+.Op options...
+.
+When run without any argument an interactive shell is launched, otherwise
+the provided
+.Ar command
+is executed and nissy terminates.
+The commands that can be run in the interactive shell are the same that can
+be run non-interactively and are provided below.
+.
+.Sh DESCRIPTION
+.Nm
+is a Rubik's Cube solver. Its optimal solver function uses Kociemba's one-step
+algorithm (huge optimal solver), and its performance is comparable to that
+of Kociemba's implementation in Cube Explorer.
+nissy can also solve different substeps of the Thistlethwaite's algorithm
+and more.
+.
+.Sh COMMANDS
+The available
+.Ar commands
+are the following:
+.
+.Bl -tag -width Ds
+.
+.It Nm commands
+List all available commands.
+.
+.It Nm help Op Ar command
+Display help. If no
+.Ar command
+is given, a generic help message is printed, otherwise a specific help
+relative to
+.Ar command
+is returned.
+.
+.It Nm print Ar scramble
+Display a text-only description of the cube obtained after applying
+.Ar scramble .
+.
+.It Nm quit
+Quit nissy.
+.
+.It Nm solve Ar step Oo Ar options Oc Ar scramble
+Solve the given
+.Ar step
+on the given
+.Ar scramble.
+By default it finds only one (shortest) solution, without using niss, and it
+displays the number of moves at the end of the line.
+.
+The options for the
+.Ar solve
+command are the following:
+.
+.Bl -tag -width Ds
+.
+.It Fl m Ar min
+Only look for solution that are at least
+.Ar min
+moves long.
+.
+.It Fl M Ar MAX
+Only look for solution that are at most
+.Ar MAX
+moves long.
+.
+.It Fl s Ar n
+Try to find
+.Ar n
+solutions.
+.
+.It Fl a
+Print all solutions: some solutions are filtered out by default for some
+steps, for examples EOs that finish with F\(aq, with this options they are not.
+.
+.It Fl n
+Allow use of NISS.
+.
+.It Fl o
+Only find solutions that require the minimum number of moves.
+.
+.It Fl p
+Plain style: do not print the number of moves.
+.
+.It Fl v
+Verbose mode: print some information during the search and print each solution
+as it is found instead of only printing them all together at the end.
+.
+.
+.El
+.
+.It Nm steps
+List all available
+.Ar steps
+for the
+.Ar solve
+command.
+.
+.It Nm version
+Display version information.
+.
+.El
+.
+.Sh ENVIRONMENT
+Data is stored in the folder pointed to by
+.Nm $NISSYDATA.
+If that variable is unset the folder
+.Nm $XDG_DATA_HOME/nissy
+or
+.Nm $HOME/.nissy
+is used instead.
+.
+.Sh EXAMPLES
+.
+The command:
+.Dl nissy solve -v \(dqR\(aqU\(aqFD2L2FR2U2R2BD2LB2D\(aqB2L\(aqR\(aqBD2BU2LU2R\(aqU\(aqF\(dq
+.
+Returns:
+.Dl Found 0 solutions, searching depth 0...
+.Dl Found 0 solutions, searching depth 1...
+.Dl (some more lines)
+.Dl Found 0 solutions, searching depth 16...
+.Dl D2 F\(aq U2 D2 F\(aq L2 D R2 D F B2 R\(aq L2 F\(aq U\(aq D
+.Dl D2 F\(aq U2 D2 F\(aq L2 D R2 D F B2 R\(aq L2 F\(aq U\(aq D (16)
+.
+The command:
+.Dl nissy solve eofb -m 4 -M 5 -n -s 6 \(dqR\(aqU\(aqFD2L2 FR2 U2R2BD2 L B2 D\(aq B2 L\(aq R\(aq\(dq
+.
+Returns:
+.Dl U B U\(aq B (4)
+.Dl U2 D2 B (B) (4)
+.Dl U2 F R2 F (4)
+.Dl U2 B U2 B (4)
+.Dl U2 B (U B) (4)
+.Dl U\(aq B U B (4)
+.
+.Sh AUTHORS
+.An Sebastiano Tronto Aq Mt sebastiano.tronto@gmail.com
+.
+.Sh SOURCE CODE
+Source code is available at
+.Lk https://github.com/sebastianotronto/nissy
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