MESON Chess Problem Database
Problem Display
PID: 33555 (8/1n1NBP1K/5Rpn/r4B2/r4k1p/4p3/6Q1/7N w - - 0 1)
Loyd, Sam
NY State Chess Association Solving Ty., 1892
(First published on Mon Feb 22 1892)
#2
8 + 8
| 5206 | Sam Loyd and His Chess Problems | 1913 |
| 3571 | An English Bohemian | 1933 |
| 268 | Chess Life | 1954 |
| 5064 | 100 Years of the American Two-move Chess Problem | 1962 |
| 5063 | Spectacular Chess Problems | 1965 |
| 5066 | Classic Chess Problems by Pioneer Composers | 1970 |
| 5065 | Chess Problem Gems by Eight Eminent American Composers | 1972 |
| 23 | Die Schwalbe | 2006 |
| 14475 | Mat Plus Review | 2007 |
| 17121 | Encyclopedia of Chess Problems (Velimirovic/Valtonen) | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Sg4
- 2.Qxg4#
- 1...Sxf7
- 2.Qg4#
- 1...Sg8
- 2.Qg4#
- 1...Sc5
- 2.Bd6#
- 1...h3
- 2.Qg3#
- 1...g5
- 2.Qf1#
- 1...Sg4
- Tries
- 1.Bh3+?
- 1...Sf5
- 2.Qg4#
- 1...Rf5!
- 1...Sf5
- 1.Bd6+?
- 1...Re5
- 2.Bxe5#
- 1...Sxd6!
- 1...Re5
- 1.Rb6?
- threat
- 2.Qf1#
- 1...Kxf5
- 2.Rf6#
- 1...Sxf5
- 2.Bg5#
- 1...gxf5
- 2.Bg5#
- 1...e2
- 2.Qf2#
- 1...Ra1
- 2.Qe4#
- 1...Ra2
- 2.Qe4#
- 1...Sg4
- 2.Qxg4#
- 1...Rxf5!
- threat
- 1.Rc6?
- threat
- 2.Qf1#
- 1...Kxf5
- 2.Rf6#
- 1...Sxf5
- 2.Bg5#
- 1...gxf5
- 2.Bg5#
- 1...e2
- 2.Qf2#
- 1...Ra1
- 2.Qe4#
- 1...Ra2
- 2.Qe4#
- 1...Sg4
- 2.Qxg4#
- 1...Rxf5!
- threat
- 1.Rd6?
- threat
- 2.Qf1#
- 1...Kxf5
- 2.Rf6#
- 1...Sxf5
- 2.Bg5#
- 1...gxf5
- 2.Bg5#
- 1...e2
- 2.Qf2#
- 1...Ra1
- 2.Qe4#
- 1...Ra2
- 2.Qe4#
- 1...Sg4
- 2.Qxg4#
- 1...Rxf5!
- threat
- 1.Re6?
- threat
- 2.Qf1#
- 1...Kxf5
- 2.Rf6#
- 1...Sxf5
- 2.Bg5#
- 1...gxf5
- 2.Bg5#
- 1...Ra1
- 2.Qe4#
- 1...Ra2
- 2.Qe4#
- 1...Sg4
- 2.Qxg4#
- 1...e2
- 2.Qf2#
- 1...Rxf5!
- threat
- 1.Rxg6?
- threat
- 2.Qf1#
- 1...Kxf5
- 2.Rf6#
- 1...Sxf5
- 2.Bg5#
- 2.Rg4#
- 2.Qg4#
- 1...e2
- 2.Qf2#
- 1...Ra1
- 2.Qe4#
- 1...Ra2
- 2.Qe4#
- 1...Sg4
- 2.Qxg4#
- 1...Rxf5!
- threat
- 1.Qf3+?
- 1...Kg5
- 2.Ra6#
- 2.Rb6#
- 2.Rc6#
- 2.Rd6#
- 2.Re6#
- 2.Rxg6#
- 1...Kxf3!
- 1...Kg5
- 1.f8S?
- threat
- 2.Se6#
- 2.Sxg6#
- 1...gxf5
- 2.Se6#
- 2.Sg6#
- 1...Sg4
- 2.Se6#
- 2.Qxg4#
- 1...Re4
- 2.Sxg6#
- 1...Re5
- 2.Sxg6#
- 1...Ra6
- 2.Sxg6#
- 1...Sc5
- 2.Sxg6#
- 2.Bd6#
- 1...Sd8
- 2.Sxg6#
- 1...g5
- 2.Se6#
- 2.Sg6#
- 2.Qf1#
- 1...e2!
- threat
- 1.Bh3+?
- Keys
- 1.Ra6!
- threat
- 2.Qf1#
- 1...Kxf5
- 2.Rf6#
- 1...Rxf5
- 2.Rxa4#
- 1...Sxf5
- 2.Bg5#
- 1...gxf5
- 2.Bg5#
- 1...e2
- 2.Qf2#
- 1...Ra1
- 2.Qe4#
- 1...Ra2
- 2.Qe4#
- 1...Sg4
- 2.Qxg4#
- threat
- 1.Ra6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 5
- Sets
- S(g);N_GUARD::QAR1(B),XS(g)
- S(g);N_GUARD,XP(G)::QAR1(B)
- S(g);N_GUARD::QAR1(B)
- S(h);N_GUARD,S_CUTR(e)::B(F)
- P(d);N_GUARD::QAB1(B)
- P(f);SBLOCK::QAR(B)
- Tries
- Try
- B(C);CHECK
- Vars
- S(g);P_SPINS(g)::QAR1(B)
- Refutation
- R(e);P_SPINR(e)
- Try
- B(F);CHECK
- Vars
- R(e);N_GUARD,P_SPINR(e)::B(F),XR(e)
- Refutation
- S(h);XB(F)
- Try
- R(D);
- Threat
- QAR(B)
- Vars
- K(c);OGATEB,P-FLIGHT,XB(C)::R1(D)
- S(g);SBLOCK,XB(C)::B(F)
- P(f);SBLOCK,XB(C)::B(F)
- P(a);N_GUARD::QAR2(B)
- R(b);N_GUARD::QAR1(B)
- S(g);N_GUARD::QAR1(B),XS(g)
- Refutation
- R(e);XB(C)
- Try
- R(D);
- Threat
- QAR(B)
- Vars
- K(c);OGATEB,P-FLIGHT,XB(C)::R1(D)
- S(g);SBLOCK,XB(C)::B(F)
- P(f);SBLOCK,XB(C)::B(F)
- P(a);N_GUARD::QAR2(B)
- R(b);N_GUARD::QAR1(B)
- S(g);N_GUARD::QAR1(B),XS(g)
- Refutation
- R(e);XB(C)
- Try
- R(D);
- Threat
- QAR(B)
- Vars
- K(c);OGATEB,P-FLIGHT,XB(C)::R1(D)
- S(g);SBLOCK,XB(C)::B(F)
- P(f);SBLOCK,XB(C)::B(F)
- P(a);N_GUARD::QAR2(B)
- R(b);N_GUARD::QAR1(B)
- S(g);N_GUARD::QAR1(B),XS(g)
- Refutation
- R(e);XB(C)
- Try
- R(D);
- Threat
- QAR(B)
- Vars
- K(c);OGATEB,P-FLIGHT,XB(C)::R1(D)
- S(g);SBLOCK,XB(C)::B(F)
- P(f);SBLOCK,XB(C)::B(F)
- R(b);N_GUARD::QAR1(B)
- S(g);N_GUARD::QAR1(B),XS(g)
- P(a);N_GUARD::QAR2(B)
- Refutation
- R(e);XB(C)
- Try
- R(D);XP(f)
- Threat
- QAR(B)
- Vars
- K(c);OGATEB,P-FLIGHT,XB(C)::R1(D)
- P(a);N_GUARD::QAR2(B)
- R(b);N_GUARD::QAR1(B)
- S(g);N_GUARD::QAR1(B),XS(g)
- Refutation
- R(e);XB(C)
- Try
- Q(B);CHECK
- Refutation
- K(c);P-FLIGHT,XQ(B)
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- R(b);::S(G),XP(f)
- R(e);::S(G),XP(f)
- S(h);::S(G),XP(f)
- Refutation
- P(a);
- Try
- Actual
- R(D);
- Threat
- QAR(B)
- Vars
- K(c);OGATEB,P-FLIGHT,XB(C)::R1(D)
- R(e);OGATE,SBLOCK,XB(C)::R(D),XR(b)
- S(g);SBLOCK,XB(C)::B(F)
- P(f);SBLOCK,XB(C)::B(F)
- P(a);N_GUARD::QAR2(B)
- R(b);N_GUARD::QAR1(B)
- S(g);N_GUARD::QAR1(B),XS(g)
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