MESON Chess Problem Database
Problem Display
PID: 81968 (1q6/1BBQ4/2r5/5R1p/1R2P3/1npNkN2/2P1p1P1/4K3 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Die Schwalbe, 1976
#2
11 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa7
- 2.Bf4#
- 1...Qxb7
- 2.Bf4#
- 1...Qa8
- 2.Bf4#
- 1...Qc8
- 2.Bf4#
- 1...Qd8
- 2.Bf4#
- 1...Qe8
- 2.Bf4#
- 1...Qf8
- 2.Bf4#
- 1...Qg8
- 2.Bf4#
- 1...Qh8
- 2.Bf4#
- 1...Sa1
- 2.Qd4#
- 1...Sc1
- 2.Qd4#
- 1...Sd2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Qa7
- Tries
- 1.Sc1?
- threat
- 2.Qd3#
- 1...Sxc1
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Qd8
- 2.Bf4#
- 1...Sc5
- 2.Qd4#
- 1...Rd6!
- threat
- 1.Sf2?
- threat
- 2.Qd3#
- 1...Qd8
- 2.Bf4#
- 1...Sc1
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...Rd6!
- threat
- 1.Sf4?
- threat
- 2.Sd5#
- 2.Qd3#
- 1...Sd4
- 2.Qxd4#
- 1...Qd8
- 2.Sd5#
- 1...Qg8
- 2.Qd3#
- 1...Rc4
- 2.Qd3#
- 1...Rc5
- 2.Qd3#
- 1...Sc1
- 2.Sd5#
- 2.Qd4#
- 1...Sc5
- 2.Sd5#
- 2.Qd4#
- 1...Rd6!
- threat
- 1.Sc5?
- threat
- 2.Qd3#
- 1...Sxc5
- 2.Qd4#
- 1...Qd8
- 2.Bf4#
- 1...Sc1
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Rd6!
- threat
- 1.Sde5?
- threat
- 2.Qd3#
- 1...Sd4
- 2.Qxd4#
- 1...Rd6
- 2.Sc4#
- 1...Sc1
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Qd8!
- threat
- 1.Sg1?
- threat
- 2.Rf3#
- 1...Sd4
- 2.Qxd4#
- 1...Qf8
- 2.Bf4#
- 1...Sd2
- 2.Qd4#
- 1...Rf6!
- threat
- 1.Sd2?
- threat
- 2.Rf3#
- 1...Sxd2
- 2.Qd4#
- 1...Qf8
- 2.Bf4#
- 1...Rf6
- 2.Sc4#
- 1...Sd4
- 2.Qxd4#
- 1...cxd2+!
- threat
- 1.Sh2?
- threat
- 2.Rf3#
- 1...Sd4
- 2.Qxd4#
- 1...Qf8
- 2.Bf4#
- 1...Sd2
- 2.Qd4#
- 1...Rf6!
- threat
- 1.Sh4?
- threat
- 2.Rf3#
- 1...Sd4
- 2.Qxd4#
- 1...Qf8
- 2.Bf4#
- 1...Sd2
- 2.Qd4#
- 1...Rf6!
- threat
- 1.Sfe5?
- threat
- 2.Rf3#
- 1...Sd4
- 2.Qxd4#
- 1...Rf6
- 2.Sc4#
- 1...Sd2
- 2.Qd4#
- 1...Qf8!
- threat
- 1.Sg5?
- threat
- 2.Rf3#
- 1...Qf8
- 2.Bf4#
- 1...Sd2
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Rf6!
- threat
- 1.Bg3?
- threat
- 2.Bf2#
- 1...Sd4
- 2.Qxd4#
- 1...Qxg3+!
- threat
- 1.Qxc6?
- threat
- 2.Qh6#
- 1...Qd8
- 2.Bf4#
- 1...Qf8
- 2.Bf4#
- 1...Qg8
- 2.Bf4#
- 1...Qh8
- 2.Bf4#
- 1...Qxc7!
- threat
- 1.Sc1?
- Keys
- 1.Sb2!
- threat
- 2.Qd3#
- 1...Sd4
- 2.Qxd4#
- 1...Qd8
- 2.Bf4#
- 1...Rd6
- 2.Sc4#
- 1...Sc1
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- threat
- 1.Sb2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 11
- Sets
- Q(g);N_GUARD::B(J)
- Q(g);N_GUARD,XB(I)::B(J)
- S(b);N_GUARD::QAB1(K)
- S(b);N_GUARD::QAB1(K),XS(b)
- Tries
- Try
- S(D);
- Threat
- QAR1(K)
- Vars
- S(b);N_GUARD,XS(D)::QAB1(K)
- S(b);N_GUARD::QAB1(K),XS(b)
- Q(g);N_GUARD::B(J)
- S(b);N_GUARD::QAB1(K)
- Refutation
- R(f);
- Try
- S(D);
- Threat
- QAR1(K)
- Vars
- Q(g);N_GUARD::B(J)
- S(b);N_GUARD::QAB1(K)
- S(b);N_GUARD::QAB1(K),XS(b)
- Refutation
- R(f);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- Q(g);::S(D)
- Q(g);::QAR1(K)
- R(f);::QAR1(K)
- Refutation
- R(f);
- Try
- S(D);
- Threat
- QAR1(K)
- Vars
- S(b);N_GUARD,XS(D)::QAB1(K)
- Q(g);N_GUARD::B(J)
- S(b);N_GUARD::QAB1(K)
- S(b);N_GUARD::QAB1(K),XS(b)
- Refutation
- R(f);
- Try
- S(D);
- Threat
- QAR1(K)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- R(f);N_GUARD::S(D)
- S(b);N_GUARD::QAB1(K)
- Refutation
- Q(g);
- Try
- S(E);
- Threat
- R1(H)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- Q(g);N_GUARD::B(J)
- S(b);N_GUARD::QAB1(K)
- Refutation
- R(f);
- Try
- S(E);
- Threat
- R1(H)
- Vars
- S(b);N_GUARD,XS(E)::QAB1(K)
- Q(g);N_GUARD::B(J)
- R(f);N_GUARD::S(E)
- S(b);N_GUARD::QAB1(K),XS(b)
- Refutation
- P(c);CHECK,XS(E)
- Try
- S(E);
- Threat
- R1(H)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- Q(g);N_GUARD::B(J)
- S(b);N_GUARD::QAB1(K)
- Refutation
- R(f);
- Try
- S(E);
- Threat
- R1(H)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- Q(g);N_GUARD::B(J)
- S(b);N_GUARD::QAB1(K)
- Refutation
- R(f);
- Try
- S(E);
- Threat
- R1(H)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- R(f);N_GUARD::S(E)
- S(b);N_GUARD::QAB1(K)
- Refutation
- Q(g);
- Try
- S(E);
- Threat
- R1(H)
- Vars
- Q(g);N_GUARD::B(J)
- S(b);N_GUARD::QAB1(K)
- S(b);N_GUARD::QAB1(K),XS(b)
- Refutation
- R(f);
- Try
- B(J);
- Threat
- B(J)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- Refutation
- Q(g);CHECK,XB(J)
- Try
- Q(K);XR(f)
- Threat
- QAB(K)
- Vars
- Q(g);N_GUARD::B(J)
- Refutation
- Q(g);XB(J)
- Try
- Actual
- S(D);
- Threat
- QAR1(K)
- Vars
- S(b);N_GUARD::QAB1(K),XS(b)
- Q(g);N_GUARD::B(J)
- R(f);N_GUARD::S(D)
- S(b);N_GUARD::QAB1(K)
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