MESON Chess Problem Database
Problem Display
PID: 81991 (2q5/7Q/8/1B2B1Np/3pN3/2n1k3/4p3/4K3 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Thema Danicum, 1983
#2
6 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sxe4
- 2.Qxe4#
- 1...Sxe4
- Tries
- 1.Sd2?
- threat
- 2.Qd3#
- 1...Sxb5
- 2.Qe4#
- 1...Qc4
- 2.Sxc4#
- 1...Se4
- 2.Qxe4#
- 1...d3
- 2.Qxd3#
- 1...Qf5!
- threat
- 1.Sxc3?
- threat
- 2.Sd5#
- 2.Qd3#
- 2.Qe4#
- 1...dxc3
- 2.Qd3#
- 2.Qe4#
- 1...Qf5
- 2.Sd5#
- 1...Qg4
- 2.Sd5#
- 2.Qd3#
- 1...Qe6
- 2.Qd3#
- 2.Qe4#
- 1...Qb7
- 2.Qd3#
- 1...Qd7
- 2.Qd3#
- 2.Qe4#
- 1...Qc4
- 2.Qe4#
- 1...Qc5
- 2.Qd3#
- 2.Qe4#
- 1...Qc6
- 2.Qd3#
- 1...Qa8
- 2.Qd3#
- 1...Qd8
- 2.Qd3#
- 2.Qe4#
- 1...Qg8
- 2.Qd3#
- 2.Qe4#
- 1...d3
- 2.Sd5#
- 2.Qxd3#
- 2.Qe4#
- 1...Qxc3+!
- threat
- 1.Sg3?
- threat
- 2.Qd3#
- 1...Sxb5
- 2.Qe4#
- 1...Qf5
- 2.Sxf5#
- 1...Se4
- 2.Qxe4#
- 1...d3
- 2.Qxd3#
- 1...Qc4!
- threat
- 1.Sc5?
- threat
- 2.Qd3#
- 1...Se4
- 2.Qxe4#
- 1...d3
- 2.Qxd3#
- 1...Qf5!
- threat
- 1.Qf5?
- threat
- 2.Bf4#
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Sxe4
- 2.Bf4#
- 2.Qxe4#
- 2.Qf3#
- 2.Qf4#
- 1...Sxb5
- 2.Qf3#
- 1...Qc4
- 2.Qh3#
- 2.Qf3#
- 1...Qc7
- 2.Qh3#
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Qb8
- 2.Qh3#
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Qf8
- 2.Bf4#
- 1...Sd1
- 2.Bf4#
- 2.Qf3#
- 2.Qf4#
- 1...Sd5
- 2.Qf2#
- 2.Qf3#
- 1...d3
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Qxf5!
- threat
- 1.Qf7?
- threat
- 2.Bf4#
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Sxe4
- 2.Bf4#
- 2.Qf3#
- 2.Qf4#
- 1...Sxb5
- 2.Qf3#
- 1...Qc4
- 2.Qf3#
- 1...Qh3
- 2.Bf4#
- 2.Qf2#
- 2.Qf4#
- 1...Qg4
- 2.Qf2#
- 1...Qc7
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Qb8
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Qf8
- 2.Bf4#
- 1...Sd1
- 2.Bf4#
- 2.Qf3#
- 2.Qf4#
- 1...Sd5
- 2.Qf2#
- 2.Qf3#
- 1...d3
- 2.Qf2#
- 2.Qf3#
- 2.Qf4#
- 1...Qf5!
- threat
- 1.Sd2?
- Keys
- 1.Sd6!
- threat
- 2.Qd3#
- 1...Sxb5
- 2.Qe4#
- 1...Qf5
- 2.Sxf5#
- 1...Qc4
- 2.Sxc4#
- 1...Se4
- 2.Qxe4#
- 1...d3
- 2.Qxd3#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- S(b);OGATE,XS(B)::QAR1(F),XS(b)
- Tries
- Try
- S(B);
- Threat
- QAR1(F)
- Vars
- S(b);N_GUARD,XB(C)::QAR1(F)
- Q(f);N_GUARD::S(B),XQ(f)
- S(b);N_GUARD::QAR1(F),XS(b)
- P(d);::QAR1(F),XP(d)
- Refutation
- Q(f);
- Try
- S(B);XS(b)
- Threat
- DUALS(3)
- Vars
- Q(f);::S(B)
- Q(f);::QAR1(F)
- Refutation
- Q(f);CHECK,XS(B)
- Try
- S(B);
- Threat
- QAR1(F)
- Vars
- S(b);N_GUARD,XB(C)::QAR1(F)
- Q(f);N_GUARD::S(B),XQ(f)
- S(b);N_GUARD::QAR1(F),XS(b)
- P(d);::QAR1(F),XP(d)
- Refutation
- Q(f);
- Try
- S(B);
- Threat
- QAR1(F)
- Vars
- S(b);N_GUARD::QAR1(F),XS(b)
- P(d);::QAR1(F),XP(d)
- Refutation
- Q(f);
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- S(b);XB(C)::QAR1(F)
- Q(f);::B(D)
- Refutation
- Q(f);XQ(F)
- Try
- Q(F);
- Threat
- DUALS(4)
- Vars
- S(b);XB(C)::QAR1(F)
- Q(f);::QAR1(F)
- Q(f);::QAB1(F)
- Q(f);::B(D)
- Refutation
- Q(f);
- Try
- Actual
- S(B);
- Threat
- QAR1(F)
- Vars
- S(b);N_GUARD,XB(C)::QAR1(F)
- Q(f);N_GUARD::S(B),XQ(f)
- S(b);N_GUARD::QAR1(F),XS(b)
- P(d);::QAR1(F),XP(d)
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