on examples

• bishoppawnpinrelation.cql
• bristol-universal.cql
• bristol1.cql
• bristol2.cql
• castlerelation.cql
• chameleon-echo.cql
• clearance-delayed.cql
• consecutive-checks.cql
• echoflipvertical.cql
• enpassantrelation.cql
• enpassantrelationsymmetry.cql
• excelsior-comment.cql
• excelsior-multiple.cql
• excelsior-simple.cql
• fatamorgana.cql
• gameinfo.cql
• gameinfo2.cql
• idealmate.cql
• immured.cql
• knight-pawn-fork-relation.cql
• long-sacrifice.cql
• modelmate.cql
• modelstalemate-1.cql
• modelstalemate-2.cql
• moved-black-piece-relation.cql
• multiple-discovered-checks.cql
• passers-1.cql
• passers-2.cql
• pins.cql
• platzwechseln1.cql
• platzwechseln2.cql
• puremate-1.cql
• puremate-2.cql
• purestalemate-1.cql
• purestalemate-2.cql
• quadrupled-pawns.cql
• queen-pawn-pin-relation.cql
• rook-corners-1.cql
• rook-corners-2.cql
• silentnext.cql
• staircase-sort.cql
• staircase.cql
• turton.cql
• underpromotion-relation.cql
• virtual-mainline.cql
• wcct7.cql
• white-try.cql
• wurzburg-plachutta.cql
• zugzwang1.cql
• zugzwang2.cql