stockfish

Description:	Free UCI chess engine, claimed to be the strongest in the world
License:	GPL-3
Homepage:	https://stockfishchess.org/
Location:	Portage

Legend:

		alpha	amd64	arm	hppa	ia64	m68k	mips	ppc	ppc64	s390	sh	sparc	x86
16	diff	-	~	-	-	-	-	-	-	-	-	-	-	~
15.1	diff	-	~	-	-	-	-	-	-	-	-	-	-	~
15-r1	diff	-	+	-	-	-	-	-	-	-	-	-	-	+
14.1	diff	-	~	-	-	-	-	-	-	-	-	-	-	~
14	diff	-	~	-	-	-	-	-	-	-	-	-	-	~
13	diff	-	+	-	-	-	-	-	-	-	-	-	-	+
10		-	+	-	-	-	-	-	-	-	-	-	-	+

cpu_flags_arm_v7 - Use instructions added in ARMv7
cpu_flags_x86_avx2 - Adds support for Advanced Vector Extensions 2 instructions
cpu_flags_x86_popcnt - Enable popcnt instruction support ([abm] or [popcnt] in cpuinfo)
cpu_flags_x86_sse - Use the SSE instruction set
debug - Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
general-32 - Generic unoptimized 32-bits build
general-64 - Generic unoptimized 64-bits build
optimize - Enable upstream -O3 optimizations (default enabled)

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