MESON Chess Problem Database
Problem Display
PID: 4859 (2q3n1/6nK/3p1rP1/4P1p1/2pk3p/Q3R3/2PN1RBB/1brN4 w - - 0 1)
Loyd, Sam
New York State Chess Association, 1892
#2
11 + 11
| 16 | Chess Amateur (The) | 1910 |
| 5206 | Sam Loyd and His Chess Problems | 1913 |
| 3360 | Simple Two-move Themes | 1924 |
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Qa7#
- 1...Qg4
- 2.Qa7#
- 1...Qf5
- 2.Qa7#
- 1...Qe6
- 2.Qa7#
- 1...Qc5
- 2.Qc3#
- 1...Qe8
- 2.Qa7#
- 1...Qf8
- 2.Qa7#
- 1...Rxf2
- 2.Qxd6#
- 1...Rf3
- 2.Qxd6#
- 1...Rf4
- 2.Qxd6#
- 1...Rf5
- 2.Qxd6#
- 1...Rf7
- 2.Qxd6#
- 1...Rf8
- 2.Qxd6#
- 1...Se6
- 2.Qxd6#
- 1...c3
- 2.Rd3#
- 1...dxe5
- 2.Bxe5#
- 1...Qh3
- Tries
- 1.Sc3?
- threat
- 2.Se2#
- 2.Sb5#
- 2.Re4#
- 1...Rxc2
- 2.Se2#
- 2.Sb5#
- 1...Rxf2
- 2.Sb5#
- 2.Re4#
- 1...Bxc2
- 2.Se2#
- 2.Sb5#
- 1...Qg4
- 2.Sb5#
- 2.Qa7#
- 1...Qf5
- 2.Se2#
- 2.Sb5#
- 2.Qa7#
- 1...Qa6
- 2.Se2#
- 2.Re4#
- 1...Qb7
- 2.Se2#
- 1...Qd7
- 2.Se2#
- 2.Re4#
- 1...Qc5
- 2.Se2#
- 2.Re4#
- 1...Qc6
- 2.Se2#
- 1...Qa8
- 2.Se2#
- 2.Sb5#
- 1...Qb8
- 2.Se2#
- 2.Re4#
- 1...Qe8
- 2.Se2#
- 2.Re4#
- 2.Qa7#
- 1...Re1
- 2.Sb5#
- 1...Rf3
- 2.Re4#
- 1...Rf4
- 2.Se2#
- 2.Sb5#
- 1...d5
- 2.Se2#
- 2.Sb5#
- 1...Kxe3!
- threat
- 1.Sf3+?
- 1...Rxf3
- 2.Rd2#
- 2.Qxd6#
- 1...Kd5!
- 1...Rxf3
- 1.Bc6?
- threat
- 2.Re4#
- 2.Qa7#
- 1...Bxc2
- 2.Qa7#
- 1...Qg4
- 2.Qa7#
- 1...Qf5
- 2.Qa7#
- 1...Qa6
- 2.Re4#
- 1...Qb7
- 2.Re4#
- 1...Qd7
- 2.Re4#
- 1...Qc7
- 2.Re4#
- 1...Qa8
- 2.Re4#
- 1...Qb8
- 2.Re4#
- 1...Qd8
- 2.Re4#
- 1...Rf4
- 2.Qxd6#
- 2.Qa7#
- 1...Rf7
- 2.Re4#
- 2.Qxd6#
- 1...Se6
- 2.Re4#
- 2.Qxd6#
- 1...d5
- 2.Qa7#
- 1...Qxc6!
- threat
- 1.Rf4+?
- 1...Rxf4
- 2.Qxd6#
- 1...gxf4!
- 1...Rxf4
- 1.Rh3?
- threat
- 2.Qe3#
- 1...Qxh3
- 2.Qa7#
- 1...Rf3
- 2.Qxd6#
- 1...c3
- 2.Rd3#
- 1...Sf5!
- threat
- 1.Qb4?
- threat
- 2.Sb3#
- 2.Rd3#
- 1...Rxd1
- 2.Rd3#
- 1...Rxc2
- 2.Sb3#
- 1...Rf3
- 2.Qxd6#
- 1...Qh3
- 2.Sb3#
- 2.Qxc4#
- 2.Qb6#
- 1...Qf5
- 2.Sb3#
- 2.Qxc4#
- 2.Qb6#
- 1...Rf4
- 2.Sb3#
- 2.Qxd6#
- 1...Ba2
- 2.Rd3#
- 1...Bxc2!
- threat
- 1.Sc3?
- Keys
- 1.Rg3!
- threat
- 2.Qe3#
- 1...Kxe5
- 2.Qe3#
- 1...Rf3
- 2.Qxd6#
- 1...Sf5
- 2.Rg4#
- 1...c3
- 2.Rd3#
- threat
- 1.Rg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 14
- Sets
- Q(j);N_GUARD::QAB(G)
- Q(j);N_GUARD,P_PINP(J)::QAB(G)
- Q(j);SBLOCK::QAB1(G)
- R(h);N_GUARD,XR(D)::QAR2(G),XP(g)
- R(h);N_GUARD::QAR2(G),XP(g)
- S(i);S_CUTR(h)::QAR2(G),XP(g)
- P(c);N_GUARD::R1(H)
- P(g);OGATE,XP(I)::B(F),XP(g)
- Tries
- Try
- S(A);
- Threat
- DUALS(3)
- Vars
- Q(j);::S(A)
- R(b);::S(A)
- R(h);::R1(H)
- Refutation
- K(d);S_FLIGHT,XR(H)
- Try
- S(C);CHECK
- Refutation
- K(d);P-FLIGHT
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- B(a);P_PINP(J),XP(B)::QAB(G)
- Q(j);::QAB(G)
- Q(j);P_PINP(J)::QAB(G)
- Q(j);::R1(H)
- P(g);::QAB(G)
- Refutation
- Q(j);XB(E)
- Try
- R(D);CHECK
- Vars
- R(h);XR(D)::QAR2(G),XP(g)
- Refutation
- P(f);XR(D)
- Try
- R(H);
- Threat
- QAB1(G)
- Vars
- Q(j);N_GUARD,XR(H)::QAB(G)
- R(h);N_GUARD::QAR2(G),XP(g)
- P(c);N_GUARD::R1(H)
- Refutation
- S(i);
- Try
- Q(G);P_PINP(c)
- Threat
- DUALS(2)
- Vars
- R(b);XS(A)::R1(H)
- R(b);XP(B)::S(C)
- R(h);N_GUARD::QAR2(G),XP(g)
- B(a);::R1(H)
- Refutation
- B(a);P_PINP(J),XP(B)
- Try
- Actual
- R(H);
- Threat
- QAB1(G)
- Vars
- K(d);S_FLIGHT,XP(I)::QAR2(G)
- R(h);N_GUARD::QAR2(G),XP(g)
- S(i);S_CUTQ(j),S_CUTR(h)::R(H)
- P(c);N_GUARD::R1(H)
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