MESON Chess Problem Database
Problem Display
PID: 217605 (8/5B2/1p6/1p3p2/Pk4P1/1N1nR2Q/R7/3N2K1 w - - 0 1)
Anonymous
English Mechanic and World of Science, 1873
(First published on Fri Apr 4 1873)
#2
9 + 5
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...fxg4
- 2.Re4#
- 1...f4
- 2.Re4#
- 1...fxg4
- Tries
- 1.Re1?
- 1...Sxe1
- 2.Qc3#
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qc3#
- 1...Sb2
- 2.Qc3#
- 1...Sf2
- 2.Qc3#
- 1...Sf4
- 2.Qc3#
- 1...Sc5
- 2.Qc3#
- 1...Se5
- 2.Qc3#
- 1...f4
- 2.Re4#
- 1...bxa4!
- 1...Sxe1
- 1.Ree2?
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qc3#
- 1...Se1
- 2.Qc3#
- 1...Sb2
- 2.Qc3#
- 1...Sf2
- 2.Qc3#
- 1...Sf4
- 2.Qc3#
- 1...Sc5
- 2.Qc3#
- 1...Se5
- 2.Qc3#
- 1...f4
- 2.Re4#
- 1...bxa4!
- 1...fxg4
- 1.Re5?
- threat
- 2.Rxb5#
- 1...Sxe5
- 2.Qc3#
- 1...Sc5
- 2.Qc3#
- 1...bxa4!
- threat
- 1.Re7?
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qc3#
- 1...Se1
- 2.Qc3#
- 1...Sb2
- 2.Qc3#
- 1...Sf2
- 2.Qc3#
- 1...Sf4
- 2.Qc3#
- 1...Sc5
- 2.Qc3#
- 1...Se5
- 2.Qc3#
- 1...f4
- 2.Re4#
- 1...bxa4!
- 1...fxg4
- 1.Re8?
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qc3#
- 1...Se1
- 2.Qc3#
- 1...Sb2
- 2.Qc3#
- 1...Sf2
- 2.Qc3#
- 1...Sf4
- 2.Qc3#
- 1...Sc5
- 2.Qc3#
- 1...Se5
- 2.Qc3#
- 1...f4
- 2.Re4#
- 1...bxa4!
- 1...fxg4
- 1.Qf1?
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qxb5#
- 2.Qe1#
- 2.Qf4#
- 1...Se1
- 2.Qxb5#
- 2.Qxe1#
- 2.Qf4#
- 1...Sb2
- 2.Qxb5#
- 2.Qe1#
- 1...Sf2
- 2.Qxb5#
- 2.Qe1#
- 1...Sf4
- 2.Qxb5#
- 2.Qe1#
- 2.Qxf4#
- 1...Sc5
- 2.Qxb5#
- 2.Qe1#
- 1...Se5
- 2.Qxb5#
- 2.Qe1#
- 1...f4
- 2.Re4#
- 1...bxa4!
- 1...fxg4
- 1.Qh2?
- threat
- 2.Qd2#
- 1...Sf2
- 2.Qd6#
- 1...bxa4!
- threat
- 1.Qg3?
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qe1#
- 2.Qf4#
- 2.Qd6#
- 1...Se1
- 2.Qxe1#
- 2.Qf4#
- 2.Qd6#
- 1...Sb2
- 2.Qe1#
- 2.Qd6#
- 1...Sf2
- 2.Qd6#
- 1...Sf4
- 2.Qe1#
- 2.Qxf4#
- 1...Sc5
- 2.Qe1#
- 1...Se5
- 2.Qe1#
- 1...f4
- 2.Re4#
- 1...bxa4!
- 1...fxg4
- 1.Qh4?
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qe1#
- 2.Qe7#
- 2.gxf5#
- 1...Se1
- 2.Qxe1#
- 2.Qe7#
- 2.gxf5#
- 1...Sb2
- 2.Qe1#
- 2.Qe7#
- 1...Sf2
- 2.Qe7#
- 1...Sf4
- 2.Qe1#
- 2.Qe7#
- 1...Sc5
- 2.Qe1#
- 1...Se5
- 2.Qe1#
- 2.Qe7#
- 1...f4
- 2.Re4#
- 1...bxa4!
- 1...fxg4
- 1.Qh6?
- 1...bxa4
- 2.Qxb6#
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qf4#
- 2.Qf8#
- 2.Qd6#
- 1...Se1
- 2.Qf4#
- 2.Qf8#
- 2.Qd6#
- 1...Sb2
- 2.Qf8#
- 2.Qd6#
- 1...Sf2
- 2.Qf8#
- 2.Qd6#
- 1...Sf4
- 2.Qxf4#
- 2.Qf8#
- 2.Qd6#
- 1...Se5
- 2.Qf8#
- 2.Qd6#
- 1...f4
- 2.Re4#
- 1...Sc5!
- 1...bxa4
- 1.Qh8?
- threat
- 2.Qc3#
- 2.Qd4#
- 1...Sb2
- 2.Qc3#
- 2.Qf8#
- 1...Se5
- 2.Qf8#
- 1...bxa4!
- threat
- 1.Re1?
- Keys
- 1.Re6!
- 1...Kxb3
- 2.Re4#
- 1...Kc4
- 2.Re4#
- 1...bxa4
- 2.Rxb6#
- 1...fxg4
- 2.Re4#
- 1...Sc1
- 2.Qc3#
- 1...Se1
- 2.Qc3#
- 1...Sb2
- 2.Qc3#
- 1...Sf2
- 2.Qc3#
- 1...Sf4
- 2.Qc3#
- 1...Sc5
- 2.Qc3#
- 1...Se5
- 2.Qc3#
- 1...f4
- 2.Re4#
- 1...Kxb3
- 1.Re6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 10
- REMOVED MATES = 0
- Sets
- P(d);N_GUARD,XP(H)::R(E)
- P(d);N_GUARD::R(E)
- Tries
- Try
- R(E);
- Vars
- S(a);OGATE,XR(E)::QAB1(F)
- P(d);N_GUARD,XP(H)::R(E)
- S(a);OGATE::QAB1(F)
- P(d);N_GUARD::R(E)
- Refutation
- P(c);XP(G)
- Try
- R(E);
- Vars
- P(d);N_GUARD,XP(H)::R(E)
- S(a);OGATE::QAB1(F)
- P(d);N_GUARD::R(E)
- Refutation
- P(c);XP(G)
- Try
- R(E);
- Threat
- R1(E),XP(c)
- Vars
- S(a);OGATE,XR(E)::QAB1(F)
- S(a);OGATE::QAB1(F)
- Refutation
- P(c);XP(G)
- Try
- R(E);
- Vars
- P(d);N_GUARD,XP(H)::R(E)
- S(a);OGATE::QAB1(F)
- P(d);N_GUARD::R(E)
- Refutation
- P(c);XP(G)
- Try
- R(E);
- Vars
- P(d);N_GUARD,XP(H)::R(E)
- S(a);OGATE::QAB1(F)
- P(d);N_GUARD::R(E)
- Refutation
- P(c);XP(G)
- Try
- Q(F);
- Vars
- P(d);N_GUARD,XP(H)::R(E)
- P(d);N_GUARD::R(E)
- Refutation
- P(c);XP(G)
- Try
- Q(F);
- Threat
- QAB(F)
- Vars
- S(a);N_GUARD::QAB(F)
- Refutation
- P(c);XP(G)
- Try
- Q(F);
- Vars
- P(d);N_GUARD,XP(H)::R(E)
- S(a);N_GUARD::QAB(F)
- P(d);N_GUARD::R(E)
- Refutation
- P(c);XP(G)
- Try
- Q(F);
- Vars
- P(d);N_GUARD,P_SPINP(d),XP(H)::R(E)
- S(a);N_GUARD::QAB(F)
- P(d);N_GUARD::R(E)
- Refutation
- P(c);XP(G)
- Try
- Q(F);
- Vars
- P(c);OGATEB,XP(G)::QAR2(F),XP(e)
- P(d);N_GUARD,XP(H)::R(E)
- P(d);N_GUARD::R(E)
- Refutation
- S(a);
- Try
- Q(F);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAB(F)
- Refutation
- P(c);XP(G)
- Try
- Actual
- R(E);
- Vars
- K(b);P-FLIGHT,P_SPINS(a),XS(D)::B(I)+R(E)
- K(b);P-FLIGHT::B(I)+R(E),DCHECK
- P(c);OGATEB,XP(G)::R(E),XP(e)
- P(d);N_GUARD,XP(H)::R(E)
- S(a);OGATE::QAB1(F)
- P(d);N_GUARD::R(E)
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