MESON Chess Problem Database
Problem Display
PID: 55528 (5N2/2n1n3/2p5/4p3/1N1k4/1KR2B2/1Pp5/2r1B1b1 w - - 0 1)
Loyd, Sam
Chess Strategy, 1881
#2
7 + 8
| 15 | British Chess Magazine | 1900 |
| 5206 | Sam Loyd and His Chess Problems | 1913 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Rxe1
- 2.Sxc2#
- 1...Bf2
- 2.Bxf2#
- 1...Bh2
- 2.Bf2#
- 1...Be3
- 2.Rc4#
- 1...Sb5
- 2.Se6#
- 1...Scd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Sed5
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Sg6
- 2.Sxc6#
- 1...Sc8
- 2.Sxc6#
- 1...Sg8
- 2.Sxc6#
- 1...c5
- 2.Rd3#
- 1...Ra1
- Tries
- 1.Sd7?
- threat
- 2.Rd3#
- 1...Rd1
- 2.Sxc2#
- 1...e4!
- threat
- 1.Bg3?
- 1...Sb5
- 2.Se6#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Bf2
- 2.Bxf2#
- 1...Bh2
- 2.Bf2#
- 1...Be3
- 2.Rc4#
- 1...Scd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Sed5
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Sg6
- 2.Sxc6#
- 1...Sc8
- 2.Sxc6#
- 1...Sg8
- 2.Sxc6#
- 1...c5
- 2.Rd3#
- 1...e4!
- 1...Sb5
- 1.Bh1?
- 1...Rxe1
- 2.Sxc2#
- 1...Sb5
- 2.Se6#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Bf2
- 2.Bxf2#
- 1...Bh2
- 2.Bf2#
- 1...Be3
- 2.Rc4#
- 1...Scd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Sed5
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Sg6
- 2.Sxc6#
- 1...Sc8
- 2.Sxc6#
- 1...Sg8
- 2.Sxc6#
- 1...c5
- 2.Rd3#
- 1...e4!
- 1...Rxe1
- 1.Bg2?
- 1...Rxe1
- 2.Sxc2#
- 1...Sb5
- 2.Se6#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Bf2
- 2.Bxf2#
- 1...Bh2
- 2.Bf2#
- 1...Be3
- 2.Rc4#
- 1...Scd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Sed5
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Sg6
- 2.Sxc6#
- 1...Sc8
- 2.Sxc6#
- 1...Sg8
- 2.Sxc6#
- 1...c5
- 2.Rd3#
- 1...e4!
- 1...Rxe1
- 1.Sd7?
- Keys
- 1.Bh4!
- 1...e4
- 2.Bf6#
- 1...Sb5
- 2.Se6#
- 1...Ra1
- 2.Sxc2#
- 1...Rb1
- 2.Sxc2#
- 1...Rd1
- 2.Sxc2#
- 1...Re1
- 2.Sxc2#
- 1...Rf1
- 2.Sxc2#
- 1...Bf2
- 2.Bxf2#
- 1...Bh2
- 2.Bf2#
- 1...Be3
- 2.Rc4#
- 1...Scd5
- 2.Se6#
- 1...Sa6
- 2.Se6#
- 1...Se6
- 2.Sxe6#
- 1...Sa8
- 2.Se6#
- 1...Se8
- 2.Se6#
- 1...Sed5
- 2.Sxc6#
- 1...Sf5
- 2.Sxc6#
- 1...Sg6
- 2.Sxc6#
- 1...Sc8
- 2.Sxc6#
- 1...Sg8
- 2.Sxc6#
- 1...c5
- 2.Rd3#
- 1...e4
- 1.Bh4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(F),XP(c)
- R(a);N_GUARD,P_PINP(B)::S(F),XP(c)
- R(a);N_GUARD,XB(A)::S(F),XP(c)
- B(b);N_GUARD::B(A),XB(b)
- B(b);N_GUARD::B(A)
- B(b);SBLOCK::R1(D)
- S(g);N_GUARD::S(G)
- S(g);N_GUARD::S(G),XS(g)
- S(h);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::R1(D)
- Tries
- Try
- S(G);
- Threat
- R1(D)
- Vars
- R(a);N_GUARD::S(F),XP(c)
- Refutation
- P(e);
- Try
- B(A);
- Vars
- S(g);N_GUARD::S(G)
- R(a);N_GUARD::S(F),XP(c)
- R(a);N_GUARD,P_PINP(B)::S(F),XP(c)
- B(b);N_GUARD::B(A),XB(b)
- B(b);N_GUARD::B(A)
- B(b);SBLOCK::R1(D)
- S(g);N_GUARD::S(G),XS(g)
- S(h);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::R1(D)
- Refutation
- P(e);
- Try
- B(E);
- Vars
- R(a);N_GUARD,XB(A)::S(F),XP(c)
- S(g);N_GUARD::S(G)
- R(a);N_GUARD::S(F),XP(c)
- R(a);N_GUARD,P_PINP(B)::S(F),XP(c)
- B(b);N_GUARD::B(A),XB(b)
- B(b);N_GUARD::B(A)
- B(b);SBLOCK::R1(D)
- S(g);N_GUARD::S(G),XS(g)
- S(h);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::R1(D)
- Refutation
- P(e);
- Try
- B(E);
- Vars
- R(a);N_GUARD,XB(A)::S(F),XP(c)
- S(g);N_GUARD::S(G)
- R(a);N_GUARD::S(F),XP(c)
- R(a);N_GUARD,P_PINP(B)::S(F),XP(c)
- B(b);N_GUARD::B(A),XB(b)
- B(b);N_GUARD::B(A)
- B(b);SBLOCK::R1(D)
- S(g);N_GUARD::S(G),XS(g)
- S(h);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::R1(D)
- Refutation
- P(e);
- Try
- Actual
- B(A);
- Vars
- P(e);OGATEB::B(A)
- S(g);N_GUARD::S(G)
- R(a);N_GUARD::S(F),XP(c)
- R(a);N_GUARD,P_PINP(B)::S(F),XP(c)
- B(b);N_GUARD::B(A),XB(b)
- B(b);N_GUARD::B(A)
- B(b);SBLOCK::R1(D)
- S(g);N_GUARD::S(G),XS(g)
- S(h);N_GUARD::S(F),XP(f)
- P(f);SBLOCK::R1(D)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).