MESON Chess Problem Database
Problem Display
PID: 2506 (1B3n2/7n/P1k5/R1PN1Q2/7q/8/1pR3P1/1K1B4 w - - 0 1)
Loyd, Sam
Source?, 1868
#2
10 + 5
| 1679 | American Chess Nuts | 1868 |
| 5206 | Sam Loyd and His Chess Problems | 1913 |
| 14907 | Good Companion Chess Problem Club | 1918 |
| 3360 | Simple Two-move Themes | 1924 |
| 887 | Mate in Two Moves | 1931 |
| 133 | The Problemist Supplement | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Sb4#
- 2.Se7#
- 1...Qg3
- 2.Sb4#
- 2.Se7#
- 1...Qg5
- 2.Sb4#
- 1...Qf6
- 2.Sb4#
- 1...Qe7
- 2.Sb4#
- 2.Sxe7#
- 1...Qd8
- 2.Sb4#
- 1...Qh1
- 2.Sb4#
- 2.Se7#
- 1...Qh2
- 2.Sb4#
- 2.Se7#
- 1...Qh3
- 2.Sb4#
- 2.Se7#
- 1...Qa4
- 2.Se7#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Qc4
- 2.Se7#
- 1...Qd4
- 2.Se7#
- 1...Qf4
- 2.Se7#
- 1...Qg4
- 2.Se7#
- 1...Qh5
- 2.Sb4#
- 2.Se7#
- 1...Qh6
- 2.Sb4#
- 2.Se7#
- 1...Sg5
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Se6
- 2.Qxe6#
- 1...Sg6
- 2.Qe6#
- 1...Sd7
- 2.Qe6#
- 1...Qf2
- Tries
- 1.Sc3?
- threat
- 2.Qc8#
- 2.Qd5#
- 1...Se6
- 2.Qxe6#
- 2.Qd5#
- 1...Qg3
- 2.Qd5#
- 1...Qg5
- 2.Bf3#
- 2.Qc8#
- 1...Qe7
- 2.Qd5#
- 1...Qh2
- 2.Bf3#
- 2.Qd5#
- 1...Qh3
- 2.Qd5#
- 1...Qc4
- 2.Qc8#
- 1...Qd4
- 2.Qc8#
- 1...Qe4
- 2.Qc8#
- 1...Qf4
- 2.Qd5#
- 1...Qg4
- 2.Qd5#
- 1...Qh5
- 2.Qc8#
- 1...Sf6
- 2.Qc8#
- 1...Sd7
- 2.Qe6#
- 2.Qd5#
- 1...Qd8!
- threat
- 1.Se3?
- threat
- 2.Qc8#
- 2.Qd5#
- 1...Se6
- 2.Qxe6#
- 2.Qd5#
- 1...Qg3
- 2.Qd5#
- 1...Qg5
- 2.Bf3#
- 2.Qc8#
- 1...Qe7
- 2.Qd5#
- 1...Qh2
- 2.Bf3#
- 2.Qd5#
- 1...Qh3
- 2.Qd5#
- 1...Qc4
- 2.Qc8#
- 1...Qd4
- 2.Qc8#
- 1...Qe4
- 2.Qc8#
- 1...Qf4
- 2.Qd5#
- 1...Qg4
- 2.Qd5#
- 1...Qh5
- 2.Qc8#
- 1...Sf6
- 2.Qc8#
- 1...Sd7
- 2.Qe6#
- 2.Qd5#
- 1...Qd8!
- threat
- 1.Sb6?
- threat
- 2.Qc8#
- 2.Qd5#
- 1...Qg3
- 2.Qe4#
- 2.Qd5#
- 1...Qg5
- 2.Bf3#
- 2.Qc8#
- 1...Qe7
- 2.Qd5#
- 1...Qh2
- 2.Bf3#
- 2.Qe4#
- 2.Qf3#
- 2.Qd5#
- 1...Qh3
- 2.Qe4#
- 2.Qd5#
- 1...Qc4
- 2.Qc8#
- 1...Qd4
- 2.Qc8#
- 1...Qe4
- 2.Qxe4#
- 2.Qc8#
- 1...Qf4
- 2.Qd5#
- 1...Qg4
- 2.Qd5#
- 1...Qh5
- 2.Qc8#
- 1...Sf6
- 2.Qc8#
- 1...Se6
- 2.Qxe6#
- 2.Qd5#
- 1...Sd7
- 2.Qe6#
- 2.Qxd7#
- 2.Qd5#
- 1...Qd8!
- threat
- 1.Sf6?
- threat
- 2.Qc8#
- 2.Qd5#
- 1...Qxf6
- 2.Bf3#
- 1...Qg3
- 2.Qe4#
- 2.Qd5#
- 1...Qg5
- 2.Bf3#
- 2.Qc8#
- 1...Qh2
- 2.Bf3#
- 2.Qe4#
- 2.Qf3#
- 2.Qd5#
- 1...Qh3
- 2.Qe4#
- 2.Qd5#
- 1...Qc4
- 2.Qc8#
- 1...Qd4
- 2.Qc8#
- 1...Qe4
- 2.Qxe4#
- 2.Qc8#
- 1...Qf4
- 2.Qd5#
- 1...Qg4
- 2.Qd5#
- 1...Qh5
- 2.Qc8#
- 1...Se6
- 2.Qxe6#
- 2.Qd5#
- 1...Sd7
- 2.Qe6#
- 2.Qxd7#
- 2.Qd5#
- 1...Sxf6!
- threat
- 1.Rxb2?
- threat
- 2.Rb6#
- 1...Se6
- 2.Qxe6#
- 1...Qd8
- 2.Sb4#
- 2.Ba4#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Sd7
- 2.Qe6#
- 1...Qe4+!
- threat
- 1.Rd2?
- threat
- 2.Qc8#
- 1...Se6
- 2.Qxe6#
- 1...Qd8
- 2.Sb4#
- 2.Ba4#
- 1...Qg3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qe7
- 2.Sb4#
- 2.Sxe7#
- 2.Ba4#
- 1...Qh2
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qh3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qd4
- 2.Se7#
- 1...Qf4
- 2.Se7#
- 1...Qg4
- 2.Se7#
- 1...Sd7
- 2.Qe6#
- 1...Qe4+!
- threat
- 1.Re2?
- 1...Se6
- 2.Qxe6#
- 1...Qd8
- 2.Sb4#
- 2.Ba4#
- 1...Qe1
- 2.Se7#
- 1...Qf2
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qg3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qg5
- 2.Sb4#
- 2.Ba4#
- 1...Qf6
- 2.Sb4#
- 2.Ba4#
- 1...Qe7
- 2.Sb4#
- 2.Sxe7#
- 2.Ba4#
- 1...Qh1
- 2.Sb4#
- 2.Se7#
- 1...Qh2
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qh3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qa4
- 2.Se7#
- 2.Bxa4#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Qc4
- 2.Se7#
- 1...Qd4
- 2.Se7#
- 1...Qf4
- 2.Se7#
- 1...Qg4
- 2.Se7#
- 1...Qh5
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qh6
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Sg5
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Sg6
- 2.Qe6#
- 1...Sd7
- 2.Re6#
- 2.Qe6#
- 1...Qe4+!
- 1...Se6
- 1.Rf2?
- 1...Qxf2
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Se6
- 2.Qxe6#
- 1...Qd8
- 2.Sb4#
- 2.Ba4#
- 1...Qg3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qg5
- 2.Sb4#
- 2.Ba4#
- 1...Qf6
- 2.Sb4#
- 2.Ba4#
- 1...Qe7
- 2.Sb4#
- 2.Sxe7#
- 2.Ba4#
- 1...Qh1
- 2.Sb4#
- 2.Se7#
- 1...Qh2
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qh3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qa4
- 2.Se7#
- 2.Bxa4#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Qc4
- 2.Se7#
- 1...Qd4
- 2.Se7#
- 1...Qf4
- 2.Se7#
- 1...Qg4
- 2.Se7#
- 1...Qh5
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qh6
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Sg5
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Sg6
- 2.Qe6#
- 1...Sd7
- 2.Qe6#
- 1...Qe4+!
- 1...Qxf2
- 1.Rc3?
- 1...Se6
- 2.Qxe6#
- 1...Qd8
- 2.Sb4#
- 2.Ba4#
- 1...Qe1
- 2.Sb4#
- 1...Qf2
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qg3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qg5
- 2.Sb4#
- 2.Ba4#
- 1...Qf6
- 2.Sb4#
- 2.Ba4#
- 1...Qe7
- 2.Sb4#
- 2.Sxe7#
- 2.Ba4#
- 1...Qh1
- 2.Sb4#
- 2.Se7#
- 1...Qh2
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qh3
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qa4
- 2.Se7#
- 2.Bxa4#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Qc4
- 2.Se7#
- 1...Qd4
- 2.Se7#
- 1...Qf4
- 2.Se7#
- 1...Qg4
- 2.Se7#
- 1...Qh5
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Qh6
- 2.Sb4#
- 2.Se7#
- 2.Ba4#
- 1...Sg5
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Sg6
- 2.Qe6#
- 1...Sd7
- 2.Qe6#
- 1...Qe4+!
- 1...Se6
- 1.Qf7?
- threat
- 2.Qb7#
- 1...Qb4
- 2.Sxb4#
- 1...Sd7
- 2.Qe6#
- 1...Qe7!
- threat
- 1.g3?
- 1...Qxg3
- 2.Sb4#
- 2.Se7#
- 1...Se6
- 2.Qxe6#
- 1...Qd8
- 2.Sb4#
- 1...Qg5
- 2.Sb4#
- 1...Qf6
- 2.Sb4#
- 1...Qe7
- 2.Sb4#
- 2.Sxe7#
- 1...Qh1
- 2.Sb4#
- 2.Se7#
- 1...Qh2
- 2.Sb4#
- 2.Se7#
- 1...Qh3
- 2.Sb4#
- 2.Se7#
- 1...Qa4
- 2.Se7#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Qc4
- 2.Se7#
- 1...Qd4
- 2.Se7#
- 1...Qf4
- 2.Se7#
- 1...Qg4
- 2.Se7#
- 1...Qh5
- 2.Sb4#
- 2.Se7#
- 1...Qh6
- 2.Sb4#
- 2.Se7#
- 1...Sg5
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Sg6
- 2.Qe6#
- 1...Sd7
- 2.Qe6#
- 1...Qe4!
- 1...Qxg3
- 1.g4?
- threat
- 2.Sb4#
- 1...Qxg4
- 2.Se7#
- 1...Se6
- 2.Qxe6#
- 1...Qe1!
- threat
- 1.Sc3?
- Keys
- 1.Be5!
- 1...Kxd5
- 2.c6#
- 1...Se6
- 2.Qxe6#
- 1...Qd8
- 2.Sb4#
- 1...Qe1
- 2.Se7#
- 1...Qf2
- 2.Sb4#
- 2.Se7#
- 1...Qg3
- 2.Sb4#
- 2.Se7#
- 1...Qg5
- 2.Sb4#
- 1...Qf6
- 2.Sb4#
- 1...Qe7
- 2.Sb4#
- 2.Sxe7#
- 1...Qh1
- 2.Sb4#
- 2.Se7#
- 1...Qh2
- 2.Sb4#
- 2.Se7#
- 1...Qh3
- 2.Sb4#
- 2.Se7#
- 1...Qa4
- 2.Se7#
- 1...Qb4
- 2.Sxb4#
- 2.Se7#
- 1...Qc4
- 2.Se7#
- 1...Qd4
- 2.Se7#
- 1...Qe4
- 2.Se7#
- 1...Qf4
- 2.Se7#
- 1...Qg4
- 2.Se7#
- 1...Qh5
- 2.Sb4#
- 2.Se7#
- 1...Qh6
- 2.Sb4#
- 2.Se7#
- 1...Sg5
- 2.Se7#
- 1...Sf6
- 2.Se7#
- 1...Sg6
- 2.Qe6#
- 1...Sd7
- 2.Qe6#
- 1...Kxd5
- 1.Be5!
There are these versions: 144654
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Q(b);N_GUARD::S(G)
- S(d);S_CUTQ(b)::S(G)
- S(e);N_GUARD::QAR2(H),XS(e)
- S(e);N_GUARD::QAR2(H)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(b);::QAB1(H)
- Q(b);::QAR2(H)
- Q(b);P_PINR(C)::QAR2(H)
- S(d);::QAR2(H)
- Refutation
- Q(b);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(b);::QAB1(H)
- Q(b);::QAR2(H)
- Q(b);P_PINR(C)::QAR2(H)
- S(d);::QAR2(H)
- Refutation
- Q(b);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(b);::QAB1(H)
- Q(b);::QAR2(H)
- S(d);::QAR2(H)
- Refutation
- Q(b);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- Q(b);N_GUARD,XS(G)::B(B)
- Q(b);::QAR2(H)
- Q(b);::QAB1(H)
- Refutation
- S(d);XS(G)
- Try
- R(C);XP(a)
- Threat
- R1(C)
- Vars
- S(e);N_GUARD::QAR2(H),XS(e)
- S(e);N_GUARD::QAR2(H)
- Refutation
- Q(b);CHECK
- Try
- R(C);
- Threat
- QAR2(H)
- Vars
- S(e);N_GUARD::QAR2(H),XS(e)
- Q(b);N_GUARD::S(G)
- S(e);N_GUARD::QAR2(H)
- Refutation
- Q(b);CHECK
- Try
- R(C);
- Vars
- S(e);N_GUARD::QAR2(H),XS(e)
- Q(b);N_GUARD,P_PINB(B)::S(G)
- Q(b);N_GUARD::S(G)
- S(d);S_CUTQ(b)::S(G)
- S(e);N_GUARD::QAR2(H)
- Refutation
- Q(b);CHECK
- Try
- R(C);
- Vars
- S(e);N_GUARD::QAR2(H),XS(e)
- Q(b);N_GUARD::S(G)
- S(d);S_CUTQ(b)::S(G)
- S(e);N_GUARD::QAR2(H)
- Refutation
- Q(b);CHECK
- Try
- R(C);
- Vars
- S(e);N_GUARD::QAR2(H),XS(e)
- Q(b);N_GUARD,P_PINB(B)::S(G)
- Q(b);N_GUARD::S(G)
- S(d);S_CUTQ(b)::S(G)
- S(e);N_GUARD::QAR2(H)
- Refutation
- Q(b);CHECK
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- Q(b);N_GUARD::S(G),XQ(b)
- S(e);N_GUARD::QAR2(H)
- Refutation
- Q(b);
- Try
- P(D);
- Vars
- S(e);N_GUARD::QAR2(H),XS(e)
- Q(b);N_GUARD::S(G)
- S(d);S_CUTQ(b)::S(G)
- S(e);N_GUARD::QAR2(H)
- Refutation
- Q(b);P_PINR(C)
- Try
- P(D);
- Threat
- S(G)
- Vars
- Q(b);N_GUARD,XP(D)::S(G)
- S(e);N_GUARD::QAR2(H),XS(e)
- Refutation
- Q(b);P_PINB(B)
- Try
- Actual
- B(J);
- Vars
- K(c);OGATE,S_FLIGHT,XS(G)::R(E)+P(F)
- S(e);N_GUARD::QAR2(H),XS(e)
- Q(b);N_GUARD::S(G)
- Q(b);N_GUARD,P_PINB(B)::S(G)
- Q(b);N_GUARD,P_PINR(C)::S(G)
- S(d);S_CUTQ(b)::S(G)
- S(e);N_GUARD::QAR2(H)
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).