MESON Chess Problem Database
Problem Display
PID: 222638 (1b2Q2N/2pb2q1/4p3/4k1Pp/7K/3R1PPB/2N1n2B/8 w - - 0 1)
Anonymous
English Mechanic and World of Science, 1883
(First published on Fri Jul 6 1883)
#2
10 + 8
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh6
- 2.Sf7#
- 1...Qf8
- 2.Sg6#
- 1...Qxh8
- 2.Qxh8#
- 1...Qg6
- 2.Sxg6#
- 1...Qe7
- 2.Sg6#
- 1...Qf7
- 2.Sxf7#
- 1...Ba4
- 2.Qxe6#
- 1...Bb5
- 2.Qxe6#
- 1...Bc6
- 2.Qxe6#
- 1...Sc1
- 2.g4#
- 1...Sg1
- 2.g4#
- 1...Sc3
- 2.g4#
- 1...Sxg3
- 2.Bxg3#
- 1...Sf4
- 2.gxf4#
- 1...c5
- 2.Qxb8#
- 1...c6
- 2.Qxb8#
- 1...Qh6
- Tries
- 1.Se3?
- threat
- 2.Sc4#
- 2.Rd5#
- 1...Bxe8
- 2.Sc4#
- 1...Sxg3
- 2.Bxg3#
- 1...Sd4
- 2.g4#
- 1...Qe7
- 2.Sc4#
- 2.Sg6#
- 1...Bb5
- 2.Rd5#
- 2.Qxe6#
- 1...Bc6
- 2.Sc4#
- 2.Qxe6#
- 1...Sc3
- 2.Sc4#
- 2.g4#
- 1...Sf4
- 2.Sc4#
- 2.gxf4#
- 1...c6
- 2.Sc4#
- 2.Qxb8#
- 1...Qxg5+!
- threat
- 1.Qg6?
- threat
- 2.Qe4#
- 2.Qxg7#
- 1...Qxh8
- 2.Qe4#
- 1...Qxg6
- 2.Sxg6#
- 1...Sxg3
- 2.Bxg3#
- 2.Qe4#
- 1...Qf6
- 2.Qe4#
- 2.Qxf6#
- 1...Qh6
- 2.Sf7#
- 2.Qe4#
- 1...Qf8
- 2.Qe4#
- 1...Qe7
- 2.Qe4#
- 1...Qf7
- 2.Sxf7#
- 2.Qe4#
- 1...Qh7
- 2.Qf6#
- 1...Qg8
- 2.Qe4#
- 2.Qf6#
- 1...Bc6
- 2.Qxe6#
- 2.Qxg7#
- 1...Sc3
- 2.Qxg7#
- 2.f4#
- 2.g4#
- 1...Sd4!
- threat
- 1.Qxd7?
- threat
- 2.Re3#
- 2.Qxe6#
- 2.Qxg7#
- 1...Qxh8
- 2.Re3#
- 2.Qxe6#
- 1...Qxd7
- 2.Sg6#
- 1...Sxg3
- 2.Bxg3#
- 2.Qd4#
- 1...Qf6
- 2.Re3#
- 1...Qh6
- 2.Sf7#
- 2.Re3#
- 1...Qf8
- 2.Sg6#
- 2.Re3#
- 2.Qxe6#
- 1...Qg6
- 2.Sxg6#
- 1...Qe7
- 2.Sg6#
- 2.Re3#
- 1...Qf7
- 2.Sxf7#
- 2.Re3#
- 1...Qh7
- 2.Qxe6#
- 1...Qg8
- 2.Re3#
- 1...Ba7
- 2.Qxe6#
- 2.Qxg7#
- 1...Sc3
- 2.Qxe6#
- 2.Qd4#
- 2.Qxg7#
- 2.g4#
- 1...Sd4
- 2.Re3#
- 2.Qxd4#
- 2.g4#
- 1...Sf4
- 2.Re3#
- 2.Qd4#
- 2.Qxg7#
- 2.gxf4#
- 1...Qxg5+!
- threat
- 1.Qf8?
- threat
- 2.Qc5#
- 2.Qxg7#
- 1...Qxf8
- 2.Sg6#
- 1...Qxh8
- 2.Qc5#
- 2.Qxh8#
- 1...Sxg3
- 2.Bxg3#
- 1...Sd4
- 2.Qc5#
- 1...Qf6
- 2.Qc5#
- 2.Qxf6#
- 1...Qh6
- 2.Sf7#
- 2.Qc5#
- 1...Qg6
- 2.Sxg6#
- 2.Qc5#
- 1...Qe7
- 2.Sg6#
- 1...Qf7
- 2.Sxf7#
- 2.Qc5#
- 1...Qh7
- 2.Qc5#
- 2.Qf6#
- 1...Qg8
- 2.Qc5#
- 2.Qf6#
- 1...Bc6
- 2.Qxg7#
- 1...Ba7
- 2.Qxg7#
- 1...Sc3
- 2.Qxg7#
- 2.Qf4#
- 2.g4#
- 1...Sf4
- 2.Qxg7#
- 2.Qxf4#
- 2.gxf4#
- 1...c5
- 2.Qxc5#
- 2.Qxg7#
- 2.Qxb8#
- 1...Qxg5+!
- threat
- 1.g4+?
- 1...Sg3
- 2.Bxg3#
- 1...Sf4!
- 1...Sg3
- 1.Se3?
- Keys
- 1.Qe7!
- threat
- 2.Qc5#
- 2.Qxg7#
- 1...Qxg5+
- 2.Qxg5#
- 1...Qxh8
- 2.Qc5#
- 1...Qxe7
- 2.Sg6#
- 1...Sxg3
- 2.Bxg3#
- 1...Sd4
- 2.Qc5#
- 1...Qf6
- 2.Qc5#
- 2.Qxf6#
- 1...Qh6
- 2.Sf7#
- 2.Qc5#
- 1...Qf8
- 2.Sg6#
- 1...Qg6
- 2.Sxg6#
- 2.Qc5#
- 1...Qf7
- 2.Sxf7#
- 2.Qc5#
- 1...Qh7
- 2.Qc5#
- 2.Qf6#
- 1...Qg8
- 2.Qc5#
- 2.Qf6#
- 1...Bc6
- 2.Qxe6#
- 2.Qxg7#
- 1...Ba7
- 2.Qxg7#
- 1...Sc3
- 2.Qxg7#
- 2.g4#
- 1...Sf4
- 2.Qxg7#
- 2.gxf4#
- 1...c5
- 2.Qxc5#
- 2.Qxg7#
- threat
- 1.Qe7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 12
- Sets
- Q(g);N_GUARD::S(J)
- Q(g);OGATE,XS(J)::QAB(I),XQ(g)
- Q(g);N_GUARD::S(J),XQ(g)
- Q(g);N_GUARD,N_SPINP(d),P_PINP(H)::S(J)
- B(f);N_GUARD::QAR1(I),XP(d)
- S(a);N_GUARD::B(B)+P(E)
- S(a);OGATE,P_SPINS(a),XP(E)::B(B),XS(a)
- S(a);OGATE::P(E),XS(a)
- P(e);OGATEB::QAB(I),XB(h)
- Tries
- Try
- S(A);
- Threat
- DUALS(2)
- Vars
- B(f);N_SPINP(d),XQ(I)::S(A)
- S(a);OGATE,P_SPINS(a),XP(E)::B(B),XS(a)
- S(a);N_GUARD::B(B)+P(E)
- Refutation
- Q(g);CHECK,XP(H)
- Try
- Q(I);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- Q(g);XS(J)::QAR1(I)
- Q(g);XQ(I)::S(J),XQ(g)
- Q(g);::QAR1(I)
- Q(g);P_PINP(H)::QAR1(I)
- Q(g);N_GUARD::QAB1(I)
- Refutation
- S(a);
- Try
- Q(I);N_PINP(d),XB(f)
- Threat
- DUALS(3)
- Vars
- Q(g);N_GUARD,XQ(I)::S(J)
- Q(g);P_PINP(H)::R(C)
- Q(g);N_GUARD::S(J),XQ(g)
- Q(g);::QAR1(I),XP(d)
- Q(g);::R(C)
- Refutation
- Q(g);CHECK,XP(H)
- Try
- Q(I);N_PINP(d)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD,XQ(I)::S(J)
- S(a);OGATE,P_SPINS(a),XP(E)::B(B),XS(a)
- S(a);::QAR2(I)
- Q(g);N_GUARD,P_PINP(H)::S(J)
- B(f);::QAB(I),XQ(g)
- B(h);::QAB(I),XQ(g)
- Refutation
- Q(g);CHECK,XP(H)
- Try
- P(E);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::B(B),XS(a)
- Refutation
- S(a);P_SPINS(a)
- Try
- Actual
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(g);CHECK,OGATE,XP(H)::QAR2(I),XQ(g)
- Q(g);XS(J)::QAR2(I)
- Q(g);N_GUARD,N_SPINP(d),P_PINP(H),XQ(I)::S(J)
- S(a);OGATE,P_SPINS(a),XP(E)::B(B),XS(a)
- S(a);::QAR2(I)
- Q(g);N_GUARD::S(J)
- B(h);::QAB(I),XQ(g)
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