studio n°17

1.Dg3-b3 Rd1-d2 2.Db3-b2 Rd2-d1 3.Rg4-f3 Rd1-d2 4.Rf3-f2 Rd2-d1 5.Db2-d4+ Rd1-c1 6.Dd4-b4 Rc1-d1 7.Db4-e1# 1-0

studio n°18

1.Da7-f2 Rd2-d1 2.Df2-d4+ Rd1-c2 3.Dd4-e3 Rc2-d1 4.De3-d3+ Rd1-e1 5.Rg7-f6 Re1-f2 6.Dd3-d2 Rf2-f1 7.Dd2-f4+ Rf1-g2 8.Df4-e3 Rg2-f1 9.De3-f3+ Rf1-e1 10.Rf6-e5 Re1-d2 11.Df3-f2 Rd2-d1 12.Df2-d4+ Rd1-c2 13.Dd4-e3 Rc2-d1 14.De3-d3+ Rd1-e1 15.Re5-e4 Re1-f2 16.Dd3-f3+ Rf2-e1 17.Re4-d3 Re1-d1 18.Df3xe2+ Rd1-c1 19.De2-c2# 1-0

studio n°19

1.Rf4-e4 Rc3-b3 2.Re4-d4 Rb3-b2 3.Dd5-b7+ Rb2-c2 4.Db7-b5 Rc2-d1 5.Db5-b3+ Rd1-e2 6.Db3-g3 Re2-f1 7.Rd4-e4 Ce5-f7 8.Re4-d5 Cf7-e5 9.Rd5-d4 Rf1-e2 10.Dg3-g2+ Re2-d1 11.Dg2-f2 Rd1-c1 12.Rd4-c3 Rc1-b1 13.Df2-c2+ Rb1-a1 14.Dc2-b3 1-0

studio n°20

1.Rg4-f5 Af6-c3 2.Dd7-c7 Ac3-a1 3.Dc7-g3+ Rg7-h8 4.Dg3-h2+ Rh8-g8 5.Dh2-b8+ Rg8-g7 6.Db8-a7 Aa1-c3 7.Da7-g1+ Rg7-h8 8.Dg1-h2+ Rh8-g8 9.Dh2-b8+ Rg8-h7 [ 9...Rg8-g7 10.Db8-g3+] 10.Db8-c7 1-0

studio n°21

1.Dd8-d4+ Ra7-a8 2.Dd4-h8+ Ra8-a7 3.Dh8-e8 Ra7-a6 4.De8-a8+ Tb7-a7 5.Da8-b8 1-0

studio n°22

1.Df3-c3 Aa7-d4 2.Ce4-d6+ Rc8-d8 3.Ag3-h4+ f7-f6 4.Ah4xf6+ 1-0

studio n°23

1.Td2xd4 e5xd4 2.Ce4-f6+ g7xf6 3.Te1-e8+ Rg8-g7 4.Ac5-f8+ Rg7-g8 5.Af8-h6# 1-0

studio n°24

1...Rb1-b2 2.Dd1-c2+ Rb2-a3 3.Dc2-c5+ Ra3-a2 4.Dc5-c4+ Ra2-a3 5.Dc4-a6+ Ra3-b2 6.Da6-b5+ Rb2-c1 7.Db5-c5+ Rc1-b2 8.Dc5-b4+ [ 8.Dc5-b4+ Rb2-a2 9.Rd3-c2; 8.Dc5-b4+ Rb2-c1 9.Db4-d2+ Rc1-b1 10.Dd2-c2#] 1-0