MESON Chess Problem Database
Problem Display
PID: 54782 (r7/1B1P4/2K2p1q/3N2p1/4k1P1/5NP1/n2BP2b/r7 w - - 0 1)
Wiehagen, Rolf
Troll, 1991
#2
9 + 8
SOLUTION
- SOUND
- Sets
- 1...Qh3
- 2.Sxf6#
- 1...Qh4
- 2.Sxf6#
- 1...Qh5
- 2.Sxf6#
- 1...Qh7
- 2.Sxf6#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Sc1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Qh3
- Tries
- 1.Kb5?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sxf6#
- 2.Sc7#
- 2.Se7#
- 1...Rb1+
- 2.Sb4#
- 1...Sc3+
- 2.Sxc3#
- 1...Bxg3
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sxf6#
- 2.Sc7#
- 2.Se7#
- 1...Rc1
- 2.Sc3#
- 2.Sxf6#
- 1...Ra6
- 2.Sc3#
- 2.Sb6#
- 2.Sxf6#
- 1...Ra7
- 2.Sc3#
- 2.Sxf6#
- 1...Rb8
- 2.Sc3#
- 2.Sxf6#
- 1...Rc8
- 2.Sc3#
- 2.Sxf6#
- 2.Sc7#
- 1...Sb4
- 2.Sc3#
- 2.Sxb4#
- 2.Sxf6#
- 1...f5
- 2.Sc3#
- 2.Sf6#
- 1...Ra5+!
- threat
- 1.Kc5?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sxf6#
- 2.Sc7#
- 2.Se7#
- 1...Qf8+
- 2.Se7#
- 1...Rc1+
- 2.Sc3#
- 1...Rc8+
- 2.Sc7#
- 1...Bg1+
- 2.Se3#
- 1...Bxg3
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sxf6#
- 2.Sc7#
- 2.Se7#
- 1...Rb1
- 2.Sc3#
- 2.Sb4#
- 2.Sb6#
- 2.Sxf6#
- 1...Ra6
- 2.Sc3#
- 2.Sb6#
- 2.Sxf6#
- 1...Ra7
- 2.Sc3#
- 2.Sxf6#
- 1...Rb8
- 2.Sc3#
- 2.Sxf6#
- 1...Sc3
- 2.Sxc3#
- 2.Sxf6#
- 1...Sb4
- 2.Sc3#
- 2.Sxb4#
- 2.Sxf6#
- 1...f5
- 2.Sc3#
- 2.Sf6#
- 1...Ra5+!
- threat
- 1.Kb6?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Se7#
- 1...Rb1+
- 2.Sb4#
- 1...Bg1+
- 2.Se3#
- 1...f5+
- 2.Sf6#
- 1...Bxg3
- 2.Sc3#
- 2.Sb4#
- 2.Sf4#
- 2.Sxf6#
- 2.Sc7#
- 2.Se7#
- 1...Rc1
- 2.Sc3#
- 2.Sxf6#
- 1...Ra5
- 2.Sc3#
- 2.Sxf6#
- 1...Ra7
- 2.Sc3#
- 2.Sxf6#
- 1...Rb8
- 2.Sc3#
- 2.Sxf6#
- 1...Rc8
- 2.Sc3#
- 2.Sxf6#
- 2.Sc7#
- 1...Sc3
- 2.Sxc3#
- 2.Sxf6#
- 1...Sb4
- 2.Sc3#
- 2.Sxb4#
- 2.Sxf6#
- 1...Ra6+!
- threat
- 1.Kc7?
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sxf6#
- 2.Se7#
- 1...Rc1+
- 2.Sc3#
- 1...Bxg3+
- 2.Sf4#
- 1...Rb1
- 2.Sc3#
- 2.Sb4#
- 2.Sb6#
- 2.Sxf6#
- 1...Ra5
- 2.Sc3#
- 2.Sxf6#
- 1...Ra6
- 2.Sc3#
- 2.Sb6#
- 2.Sxf6#
- 1...Ra7
- 2.Sc3#
- 2.Sxf6#
- 1...Rb8
- 2.Sc3#
- 2.Sxf6#
- 1...Sc3
- 2.Sxc3#
- 2.Sxf6#
- 1...Sb4
- 2.Sc3#
- 2.Sxb4#
- 2.Sxf6#
- 1...f5
- 2.Sc3#
- 2.Sf6#
- 1...Rc8+!
- threat
- 1.Kb5?
- Keys
- 1.Kd6!
- threat
- 2.Sc3#
- 2.Se3#
- 2.Sb4#
- 2.Sf4#
- 2.Sb6#
- 2.Sxf6#
- 2.Sc7#
- 2.Se7#
- 1...Qf8+
- 2.Se7#
- 1...Ra6+
- 2.Sb6#
- 1...Bxg3+
- 2.Sf4#
- 1...f5+
- 2.Sf6#
- 1...Rb1
- 2.Sc3#
- 2.Sb4#
- 2.Sb6#
- 2.Sxf6#
- 1...Rc1
- 2.Sc3#
- 2.Sxf6#
- 1...Ra5
- 2.Sc3#
- 2.Sxf6#
- 1...Ra7
- 2.Sc3#
- 2.Sxf6#
- 1...Rb8
- 2.Sc3#
- 2.Sxf6#
- 1...Rc8
- 2.Sc3#
- 2.Sxf6#
- 2.Sc7#
- 1...Sc3
- 2.Sxc3#
- 2.Sxf6#
- 1...Sb4
- 2.Sc3#
- 2.Sxb4#
- 2.Sxf6#
- threat
- 1.Kd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- Q(g);N_GUARD::S(F),XP(f)
- R(h);OGATE::PXR(h)=Q
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- Tries
- Try
- K(G);S_FLIGHT
- Threat
- DUALS(8)
- Vars
- R(a);CHECK::B(H)+S(F)
- S(b);CHECK::B(H)+S(F),DCHECK,XS(b)
- Refutation
- R(h);CHECK
- Try
- K(G);P-FLIGHT
- Threat
- DUALS(8)
- Vars
- Q(g);CHECK::B(H)+S(F)
- R(a);CHECK::B(H)+S(F),DCHECK
- R(h);CHECK::B(H)+S(F)
- B(c);CHECK::B(H)+S(F)
- Refutation
- R(h);CHECK
- Try
- K(G);P-FLIGHT
- Threat
- DUALS(7)
- Vars
- R(a);CHECK::B(H)+S(F)
- B(c);CHECK::B(H)+S(F)
- P(f);CHECK::B(H)+S(F),DCHECK
- Refutation
- R(h);CHECK
- Try
- K(G);P-FLIGHT,P_SPINP(D)
- Threat
- DUALS(7)
- Vars
- R(a);CHECK::B(H)+S(F),DCHECK
- B(c);CHECK,XP(D)::B(H)+S(F)
- Refutation
- R(h);CHECK
- Try
- Actual
- K(G);P-FLIGHT,P_SPINP(D)
- Threat
- DUALS(8)
- Vars
- Q(g);CHECK::B(H)+S(F)
- R(h);CHECK::B(H)+S(F)
- B(c);CHECK,XP(D)::B(H)+S(F)
- P(f);CHECK::B(H)+S(F),DCHECK
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