MESON Chess Problem Database
Problem Display
PID: 4564 (2R5/BpNnp3/qp4RK/p1k1p3/7p/PnN1p3/2Q4r/3r3b w - - 0 1)
Loyd, Sam
3rd Prize Set, 5. American Chess Congress, 1880
#2
8 + 14
| 5689 | The Chess Monthly (Hoffer) | 1880 |
| 5206 | Sam Loyd and His Chess Problems | 1913 |
| 5658 | Beispiele zur Ideengeschichte des Schachproblems (Josef Breuer) | 1982 |
SOLUTION
- SOUND
- Sets
- 1...Kc4
- 2.Se2#
- 1...Kd4
- 2.Se6#
- 1...Qf1
- 2.Se2#
- 1...Qe2
- 2.Sxe2#
- 1...Qxa7
- 2.Se2#
- 1...Rd4
- 2.Sa4#
- 2.Se4#
- 2.S7d5#
- 2.Sxa6#
- 1...Rd5
- 2.S7b5#
- 1...Rd6
- 2.Se6#
- 1...Rg2
- 2.S7b5#
- 1...Rh3
- 2.S3b5#
- 1...Bg2
- 2.S3b5#
- 1...Sd4
- 2.Sa4#
- 2.Se4#
- 2.Sxa6#
- 1...e2
- 2.S3b5#
- 1...e4
- 2.S7b5#
- 1...Kc4
- Tries
- 1.Bxb6+?
- 1...Kc4
- 2.Se2#
- 1...Qxb6
- 2.Se2#
- 1...Sxb6!
- 1...Kc4
- 1.Qe4?
- threat
- 2.Sa4#
- 2.S7b5#
- 2.S7d5#
- 2.Sxa6#
- 2.Sa8#
- 2.Se8#
- 1...Qxa7
- 2.Sa4#
- 2.S7b5#
- 2.S7d5#
- 2.Sa6#
- 2.Sa8#
- 2.Se8#
- 1...Rd4
- 2.S7b5#
- 2.S7d5#
- 2.Sxa6#
- 2.Sa8#
- 2.Se8#
- 1...Sd4
- 2.Sxa6#
- 1...Sf6
- 2.S7b5#
- 2.Se8#
- 1...e6
- 2.S7b5#
- 2.Se8#
- 1...Qc4
- 2.S7b5#
- 2.S7d5#
- 2.Sa6#
- 2.Sa8#
- 2.Se8#
- 1...Qf1
- 2.Sa4#
- 2.S7b5#
- 2.S7d5#
- 2.Sa6#
- 2.Sa8#
- 2.Se8#
- 1...Qe2
- 2.Sa4#
- 2.S7b5#
- 2.S7d5#
- 2.Sa6#
- 2.Sa8#
- 2.Se8#
- 1...Qd3
- 2.Sa4#
- 2.S7b5#
- 2.S7d5#
- 2.Sa6#
- 2.Sa8#
- 2.Se8#
- 1...Qb5
- 2.S7xb5#
- 2.Sa6#
- 1...Rd5
- 2.Sa4#
- 2.S7b5#
- 2.S7xd5#
- 2.Sxa6#
- 2.Sa8#
- 2.Se8#
- 1...Rd6
- 2.Sa4#
- 2.Sxa6#
- 2.Se6#
- 1...Sb8
- 2.Sa4#
- 2.Sxa6#
- 1...a4
- 2.S7b5#
- 2.S7d5#
- 2.Sxa6#
- 2.Sa8#
- 2.Se8#
- 2.Qb4#
- 1...Bxe4!
- threat
- 1.Bxb6+?
- Keys
- 1.Rg2!
- threat
- 2.S3b5#
- 2.S7b5#
- 1...Rd6+
- 2.Se6#
- 1...Kc4
- 2.Se2#
- 2.S3b5#
- 1...Kd4
- 2.Se6#
- 1...Kc6
- 2.S7b5#
- 2.Se8#
- 1...Kd6
- 2.Se4#
- 1...Rxg2
- 2.S7b5#
- 1...Bxg2
- 2.S3b5#
- 1...Qc4
- 2.S7b5#
- 1...Qf1
- 2.S7b5#
- 1...Qe2
- 2.S7b5#
- 1...Qd3
- 2.S7b5#
- 1...Qb5
- 2.S3xb5#
- 2.S7xb5#
- 1...Rc1
- 2.S7b5#
- 1...Rd2
- 2.S7b5#
- 1...Rd3
- 2.S7b5#
- 1...Rd4
- 2.Se4#
- 2.S7b5#
- 2.Se8#
- 1...Sa1
- 2.S7b5#
- 1...Sd2
- 2.S7b5#
- 1...Sd4
- 2.Se4#
- 1...Sb8
- 2.S3b5#
- threat
- 1.Rg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 10
- REMOVED MATES = 6
- Sets
- K(h);N_SPINP(k),P-FLIGHT::QAR(A)+S(C)
- K(h);S_FLIGHT::S(G)
- Q(j);N_GUARD::QAR(A)+S(C)
- Q(j);N_GUARD::QAR(A)+S(C),XQ(j)
- Q(j);N_GUARD,N_SPINP(k),XB(F)::QAR(A)+S(C)
- R(a);S_CUTB(b)::R(H)+S(G)
- R(a);P_PINR(D),SBLOCK::R(H)+S(G),DCHECK
- R(c);S_CUTB(b)::R(H)+S(G)
- R(c);N_GUARD::QAR(A)+S(C)
- B(b);S_CUTR(c)::QAR(A)+S(C)
- P(e);S_CUTR(c)::QAR(A)+S(C)
- P(i);S_CUTB(b)::R(H)+S(G)
- Tries
- Try
- B(F);CHECK,XP(k)
- Vars
- K(h);P-FLIGHT::QAR(A)+S(C)
- Q(j);P_PINR(D),XB(F)::QAR(A)+S(C)
- Refutation
- S(m);XB(F)
- Try
- Q(A);
- Threat
- DUALS(6)
- Vars
- S(d);::R(H)+S(G),DCHECK,XQ(j)
- Refutation
- B(b);XQ(A)
- Try
- Actual
- R(D);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,SBLOCK::R(H)+S(G),DCHECK
- K(h);S_FLIGHT::S(G)
- K(h);N_SPINP(k),S_FLIGHT::S(C)
- R(c);XR(D)::R(H)+S(G)
- B(b);XR(D)::QAR(A)+S(C)
- Q(j);SBLOCK::R(H)+S(G)
- Q(j);::R(H)+S(G)
- R(a);::R(H)+S(G)
- S(d);::R(H)+S(G)
- S(d);SBLOCK::QAR(A)+S(C),DCHECK
- S(m);::QAR(A)+S(C)
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).