MESON Chess Problem Database
Problem Display
PID: 52414 (b3N2K/1BqP3p/2n2Q2/R2n3r/1p2kNP1/1R3p2/2P2P2/B2rb3 w - - 0 1)
Sheppard, Charles William
1st HM., American Chess Bulletin, 1944
#2
12 + 11
| 5064 | 100 Years of the American Two-move Chess Problem | 1962 |
SOLUTION
- SOUND
- Sets
- 1...Qxa5
- 2.Sd6#
- 1...Qb6
- 2.Sd6#
- 1...Qd6
- 2.Sxd6#
- 1...Qxb7
- 2.Sd6#
- 1...Rd3
- 2.cxd3#
- 1...Rh1
- 2.Qf5#
- 1...Rh2
- 2.Qf5#
- 1...Rh3
- 2.Qf5#
- 1...Rh4
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Rh6
- 2.Qf5#
- 1...Se3
- 2.Rxe3#
- 1...Sxf4
- 2.Re3#
- 1...Sb6
- 2.Re3#
- 1...Sde7
- 2.Re3#
- 1...Sd4
- 2.Re3#
- 1...Sxa5
- 2.Re3#
- 1...Se5
- 2.Re3#
- 1...Sa7
- 2.Re3#
- 1...Sce7
- 2.Re3#
- 1...Sb8
- 2.Re3#
- 1...Sd8
- 2.Re3#
- 1...Qxa5
- Tries
- 1.Sxd5?
- threat
- 2.Re3#
- 2.Qxf3#
- 1...Qxa5
- 2.Qxf3#
- 1...Rxa1
- 2.Re3#
- 1...Bxf2
- 2.Qxf3#
- 1...Qg3
- 2.Re3#
- 1...Qf4
- 2.Qxf4#
- 1...Qe5
- 2.Re3#
- 1...Qb6
- 2.Sd6#
- 2.Qxf3#
- 2.Qf4#
- 1...Rd3
- 2.cxd3#
- 1...Rd4
- 2.Re3#
- 1...Rh3
- 2.Re3#
- 2.Qf5#
- 1...Rf5
- 2.Re3#
- 2.Qxf5#
- 1...Bd2
- 2.Qxf3#
- 1...Sd4
- 2.Sc3#
- 2.Re3#
- 1...Se5
- 2.Re3#
- 2.Qf4#
- 1...Bc3!
- threat
- 1.Se6?
- threat
- 2.Sc5#
- 2.Qxf3#
- 1...Qxa5
- 2.Sd6#
- 2.Qxf3#
- 1...Rxa1
- 2.Sc5#
- 1...Bxf2
- 2.Qxf3#
- 1...Sxf6
- 2.Sxf6#
- 2.Re3#
- 1...Sxa5
- 2.Re3#
- 2.Qxf3#
- 1...Qf4
- 2.Sc5#
- 1...Qg3
- 2.Sc5#
- 1...Qe5
- 2.Sc5#
- 1...Qb6
- 2.Sd6#
- 2.Qxf3#
- 1...Qd6
- 2.Sxd6#
- 2.Qxf3#
- 1...Rd3
- 2.Sc5#
- 2.cxd3#
- 1...Rd4
- 2.Sc5#
- 1...Rh3
- 2.Sc5#
- 2.Sg5#
- 2.Qf5#
- 1...Rf5
- 2.Qxf5#
- 1...Bc3
- 2.Sc5#
- 1...Se3
- 2.Rxe3#
- 1...Sf4
- 2.Re3#
- 1...Sb6
- 2.Re3#
- 2.Qxf3#
- 1...Sde7
- 2.Re3#
- 2.Qxf3#
- 1...Sd4
- 2.Re3#
- 1...Se5
- 2.Re3#
- 2.Qf4#
- 1...Sa7
- 2.Re3#
- 2.Qxf3#
- 1...Sce7
- 2.Re3#
- 2.Qxf3#
- 1...Sb8
- 2.Re3#
- 2.Qxf3#
- 1...Sd8
- 2.Re3#
- 2.Qxf3#
- 1...Sc3!
- threat
- 1.Sxd5?
- Keys
- 1.Sd3!
- threat
- 2.Sc5#
- 1...Qxa5
- 2.Sd6#
- 1...Rxd3
- 2.cxd3#
- 1...Bxf2
- 2.Sxf2#
- 1...Sxf6
- 2.Sxf6#
- 1...Sxa5
- 2.Qd4#
- 1...Qb6
- 2.Sd6#
- 1...Qd6
- 2.Sxd6#
- 1...Rf5
- 2.Qxf5#
- 1...Sc3
- 2.Rxb4#
- 1...Se3
- 2.Qd4#
- 1...Sf4
- 2.Qd4#
- 1...Sb6
- 2.Qd4#
- 1...Sde7
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Se5
- 2.Qf4#
- 1...Sa7
- 2.Qd4#
- 1...Sce7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 11
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- Q(i);N_GUARD,XR(G)::S(K)
- Q(i);N_GUARD::S(K)
- Q(i);N_GUARD::S(K),XQ(i)
- Q(i);N_GUARD,XB(I)::S(K)
- R(a);OGATE::P(B),XR(a)
- R(g);N_GUARD::QAB1(H)
- R(g);N_GUARD::QAB1(H),XR(g)
- S(f);N_GUARD,P_SPINS(h)::R1(D),XS(f)
- S(f);N_GUARD,P_SPINS(h),XS(E)::R1(D)
- S(f);N_GUARD,P_SPINS(h)::R1(D)
- S(h);P_SPINS(f)::R1(D)
- S(h);P_SPINS(f),XR(G)::R1(D)
- Tries
- Try
- S(E);XS(f)
- Threat
- DUALS(2)
- Vars
- Q(i);XR(G)::QAB1(H),XP(c)
- R(a);XB(A)::R1(D)
- B(b);XP(C)::QAB1(H),XP(c)
- Q(i);::R1(D)
- Q(i);N_GUARD::QAR1(H),XQ(i)
- Q(i);P_PINQ(H)::R1(D)
- R(a);OGATE::P(B),XR(a)
- R(a);::R1(D)
- B(b);::QAB1(H),XP(c)
- Refutation
- B(b);P_PINQ(H)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(a);XB(A)::S(E)
- B(b);XP(C)::QAB1(H),XP(c)
- Q(i);::S(E)
- Q(i);P_PINQ(H)::S(E)
- R(a);::S(E)
- R(g);N_GUARD::QAB1(H),XR(g)
- B(b);P_PINQ(H)::S(E)
- S(f);N_GUARD,P_SPINS(h)::R1(D),XS(f)
- S(f);N_GUARD,P_SPINS(h)::R1(D)
- S(h);P_SPINS(f)::R1(D)
- Refutation
- S(f);P_SPINS(h)
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- Q(i);N_GUARD,XR(G)::S(K)
- R(a);OGATE,XS(E)::P(B),XR(a)
- B(b);XP(C)::S(E),XB(b)
- S(f);P_SPINS(h),XQ(H)::S(K),XS(f)
- S(h);N_GUARD,P_SPINS(f),XR(G)::QAR1(H)
- Q(i);N_GUARD::S(K)
- Q(i);N_GUARD::S(K),XQ(i)
- R(g);N_GUARD::QAB1(H),XR(g)
- S(f);N_GUARD,P_SPINS(h),S_CUTB(b)::R(D),XP(d)
- S(f);P_SPINS(h)::QAR1(H)
- S(h);N_GUARD,P_SPINS(f)::QAR1(H),XS(h)
- S(h);P_SPINS(f),S_CUTQ(i)::QAR1(H)
- S(h);N_GUARD,P_SPINS(f)::QAR1(H)
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