MESON Chess Problem Database
Problem Display
PID: 98224 (3b2Q1/n2K1p2/4P2r/1N1k1N2/3P4/1P3P2/R2q1n2/8 w - - 0 1)
Lincoln, Robert A
US Problem Bulletin, 1992
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qc3
- 2.Sxc3#
- 1...Qe3
- 2.Sxe3#
- 1...Qb4
- 2.Se3#
- 1...Qf4
- 2.Sc3#
- 1...Qa5
- 2.Se3#
- 1...Qg5
- 2.Sc3#
- 1...Qd1
- 2.Sc3#
- 2.Se3#
- 1...Qxa2
- 2.Sc3#
- 2.Se3#
- 1...Qb2
- 2.Se3#
- 1...Qc2
- 2.Se3#
- 1...Qe2
- 2.Sc3#
- 1...Bh4
- 2.Sc7#
- 1...Ba5
- 2.Se7#
- 1...Bg5
- 2.Sc7#
- 1...Bb6
- 2.Se7#
- 1...Bf6
- 2.Sc7#
- 1...Bc7
- 2.Sxc7#
- 2.Se7#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 1...f6
- 2.e7#
- 1...Qc3
- Tries
- 1.Rxd2?
- threat
- 2.Sc3#
- 2.Se3#
- 1...Rxe6
- 2.Sc3#
- 1...Sxb5
- 2.Se3#
- 1...Ba5
- 2.Se3#
- 2.Se7#
- 1...Bg5
- 2.Sc3#
- 2.Sc7#
- 1...Se4
- 2.Se3#
- 1...Sg4
- 2.Sc3#
- 1...Sd1!
- threat
- 1.Qg3?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Qxd4
- 2.Qd6#
- 1...Sxb5
- 2.Qe5#
- 1...Qe1
- 2.Qd6#
- 1...Qe3
- 2.Sxe3#
- 2.Qd6#
- 1...Qb4
- 2.Se3#
- 2.Qe5#
- 1...Qf4
- 2.Sc3#
- 1...Qe2
- 2.Sc3#
- 2.Qd6#
- 1...Bf6
- 2.Sc7#
- 2.Qd6#
- 1...Bc7
- 2.Sxc7#
- 2.Se7#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 2.Qe5#
- 1...Sd3
- 2.Qd6#
- 1...Se4
- 2.Qe5#
- 1...Sg4
- 2.Qd6#
- 1...Sc6
- 2.Qd6#
- 1...Sc8
- 2.Qe5#
- 1...f6
- 2.Qd6#
- 1...Rxe6!
- threat
- 1.Qg5?
- threat
- 2.Se3#
- 2.Se7#
- 1...Qxg5
- 2.Sc3#
- 1...Bxg5
- 2.Sc7#
- 1...Qe3
- 2.Sxe3#
- 2.Se7#
- 1...Be7
- 2.Sc7#
- 2.Se3#
- 2.Sxe7#
- 1...Sxb5!
- threat
- 1.Qxd8?
- threat
- 2.Sc7#
- 2.Se7#
- 1...Rxe6
- 2.Sc7#
- 1...Sxb5
- 2.Qa8#
- 1...Qc1
- 2.Se7#
- 1...Qc3
- 2.Sxc3#
- 2.Se7#
- 1...Qb4
- 2.Sc7#
- 2.Se3#
- 1...Qf4
- 2.Sc3#
- 2.Se7#
- 1...Qa5
- 2.Se3#
- 2.Se7#
- 1...Qg5
- 2.Sc3#
- 2.Sc7#
- 1...Qc2
- 2.Se3#
- 2.Se7#
- 1...Sc6
- 2.Sc7#
- 1...Sc8
- 2.Sc7#
- 1...Qxd4!
- threat
- 1.Qf8?
- threat
- 2.Qc5#
- 2.Qd6#
- 1...Qxd4
- 2.Qd6#
- 1...Rxe6
- 2.Qc5#
- 1...Sxb5
- 2.Qc5#
- 1...Qc1
- 2.Qd6#
- 1...Qc3
- 2.Sxc3#
- 2.Qd6#
- 1...Qb4
- 2.Se3#
- 1...Qf4
- 2.Sc3#
- 2.Qc5#
- 1...Qc2
- 2.Se3#
- 2.Qd6#
- 1...Bb6
- 2.Se7#
- 2.Qd6#
- 1...Bc7
- 2.Sxc7#
- 2.Se7#
- 2.Qc5#
- 1...Be7
- 2.Sc7#
- 2.Sxe7#
- 1...Sd3
- 2.Qd6#
- 1...Sc8
- 2.Qc5#
- 1...Se4!
- threat
- 1.Rxd2?
- Keys
- 1.Ra5!
- threat
- 2.Sc3#
- 2.Sc7#
- 1...Qxa5
- 2.Se3#
- 1...Bxa5
- 2.Se7#
- 1...Sxb5
- 2.Rxb5#
- 1...Qc3
- 2.Sxc3#
- 2.Sc7#
- 1...Bc7
- 2.Sc3#
- 2.Sxc7#
- 2.Se7#
- threat
- 1.Ra5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 13
- Sets
- Q(a);N_GUARD::S(E),XQ(a)
- Q(a);N_GUARD::S(F),XQ(a)
- Q(a);N_GUARD::S(F)
- Q(a);N_GUARD::S(E)
- B(g);N_GUARD::S(E)
- B(g);N_GUARD::S(F)
- P(f);::QAB(I)+P(G)
- Tries
- Try
- R(A);XQ(a)
- Threat
- DUALS(2)
- Vars
- R(d);XP(G)::S(E)
- S(e);XS(E)::S(F)
- S(b);::S(F)
- S(b);::S(E)
- Refutation
- S(b);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(D)::QAR1(I)
- S(e);XS(E)::QAR1(I)
- Q(a);::QAR1(I)
- Q(a);N_GUARD::S(E)
- S(b);::QAR1(I)
- S(e);::QAR1(I)
- P(f);::QAR1(I)
- Refutation
- R(d);XP(G)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XQ(I)::S(E)
- B(g);N_GUARD,XQ(I)::S(E)
- Refutation
- S(e);XS(E)
- Try
- Q(I);XB(g)
- Threat
- DUALS(2)
- Vars
- R(d);XP(G)::S(E)
- S(e);N_GUARD,XS(E)::QAB(I)
- Q(a);::S(F)
- S(e);::S(E)
- Refutation
- Q(a);XP(D)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(a);XP(D)::QAR1(I)
- R(d);XP(G)::QAR1(I)
- S(e);XS(E)::QAR1(I)
- Q(a);::QAR1(I)
- Q(a);N_GUARD::S(F)
- S(b);::QAR1(I)
- S(e);::QAR1(I)
- Refutation
- S(b);
- Try
- Actual
- R(A);
- Threat
- DUALS(2)
- Vars
- Q(a);N_GUARD,XR(A)::S(F)
- B(g);N_GUARD,XR(A)::S(F)
- S(e);OGATE,P_SPINS(e),XS(E)::R(A),XS(e)
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