Class 2 - Class 1 Some problems which span Class 1 & Class 2 share a common lightness of touch. Much machinery to enforce the stalemate is not needed, because if the stalemate is broken, why there isn't enough left to manage a checkmate at all. kB6/2K5/8/2N5/8/8/8/8 w - - id #004 (3+1) WM?; (Diag 3 from the tutorial.) The following position is very similar: k7/P7/1K1N4/8/8/8/8/8 w - - id #004a (3+1) WM?; k7/P7/B1K5/8/8/8/8/8 w - - id #009 (3+1) WTM.LM?; (Diag 7 from the tutorial.) k1B5/P7/B2K4/8/8/8/8/8 w - - id #028 (4+1) WM?; Here the bishops are on the same colour square. Now here are some heavier problems of this cross-breed: k1B5/3K4/3B4/8/8/8/5B1B/6B1 w - - id #076 (6+1) Stalemate?; 8/8/3B1B2/2B1b1B1/1B1b1b1B/2b1b1b1/1B1b1B1b/2B1bK1k w - - id #077 (10+10) White to move. Last move? Dedicated to Matthieu Lemeschelle.; k7/B7/KBpB4/B1B5/1B1B4/B1B5/8/5B2 w - - id #078 (11+2) White to move. Last move?; 8/8/5B1N/4NpBp/3B1B1B/4B1BK/3B4/7k w - - id #079 (11/12+3) White to move. Is there a White pawn on g2?;