MESON Chess Problem Database
Problem Display
PID: 102857 (8/P7/2B3K1/N1ppp3/3k4/R2P3R/3p3N/1n1Q1n2 w - - 0 1)
Hermanson, Halvar
Northwest Chess, 1977
#2
9 + 7
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sxa3
- 2.Qa1#
- 1...Sc3
- 2.Sb3#
- 1...Sxh2
- 2.Qg1#
- 1...Se3
- 2.Sf3#
- 1...Sg3
- 2.Qg1#
- 1...Sxa3
- Tries
- 1.Ba4?
- threat
- 2.Sc6#
- 1...Sxa3
- 2.Qa1#
- 1...Sg3
- 2.Qg1#
- 1...c4!
- threat
- 1.Bb5?
- threat
- 2.Sc6#
- 1...Sxa3
- 2.Qa1#
- 1...Sg3
- 2.Qg1#
- 1...c4!
- threat
- 1.Bb7?
- threat
- 2.Sc6#
- 1...Sxa3
- 2.Qa1#
- 1...Sg3
- 2.Qg1#
- 1...c4!
- threat
- 1.Bd7?
- threat
- 2.Sc6#
- 1...Sxa3
- 2.Qa1#
- 1...Sg3
- 2.Qg1#
- 1...c4!
- threat
- 1.Ba8?
- threat
- 2.Sc6#
- 1...Sxa3
- 2.Qa1#
- 1...Sg3
- 2.Qg1#
- 1...c4!
- threat
- 1.Be8?
- threat
- 2.Sc6#
- 1...Sxa3
- 2.Qa1#
- 1...Sg3
- 2.Qg1#
- 1...c4!
- threat
- 1.Ra4+?
- 1...Kc3
- 2.Qb3#
- 1...c4!
- 1...Kc3
- 1.Rh4+?
- 1...Ke3
- 2.Qf3#
- 1...e4!
- 1...Ke3
- 1.Qb3?
- threat
- 2.Qxd5#
- 1...Sxa3
- 2.Qb2#
- 1...c4
- 2.Qb6#
- 1...Sc3
- 2.Qxc3#
- 1...Se3
- 2.Sf3#
- 1...Sg3!
- threat
- 1.Qf3?
- threat
- 2.Qxd5#
- 1...e4
- 2.Qf6#
- 1...Sc3
- 2.Sb3#
- 1...Se3
- 2.Qxe3#
- 1...Sg3
- 2.Qf2#
- 1...Sxa3!
- threat
- 1.Qxb1?
- threat
- 2.Qa1#
- 2.Qb2#
- 1...Sg3
- 2.Qg1#
- 1...c4
- 2.Qb6#
- 1...d1Q
- 2.Qb2#
- 1...d1R
- 2.Qb2#
- 1...d1S!
- threat
- 1.Qxf1?
- threat
- 2.Qg1#
- 2.Qf2#
- 1...Sxa3
- 2.Qa1#
- 1...e4
- 2.Qf6#
- 1...d1Q
- 2.Qf2#
- 1...d1R
- 2.Qf2#
- 1...d1S!
- threat
- 1.Ba4?
- Keys
- 1.a8Q!
- 1...Sxa3
- 2.Qa1#
- 1...Sxh2
- 2.Qg1#
- 1...Sg3
- 2.Qg1#
- 1...c4
- 2.Qa7#
- 1...e4
- 2.Qh8#
- 1...Sc3
- 2.Sb3#
- 1...Se3
- 2.Sf3#
- 1...Sxa3
- 1.a8Q!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(a);OGATE,XR(C)::QAB(A)
- S(a);SBLOCK::S(F)
- S(b);OGATE,XS(B)::QAB(A)
- S(b);SBLOCK::S(B)
- S(b);OGATE::QAB(A)
- Tries
- Try
- B(G);
- Threat
- S(F)
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- S(b);OGATE::QAB(A)
- Refutation
- P(e);
- Try
- B(G);
- Threat
- S(F)
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- S(b);OGATE::QAB(A)
- Refutation
- P(e);
- Try
- B(G);
- Threat
- S(F)
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- S(b);OGATE::QAB(A)
- Refutation
- P(e);
- Try
- B(G);
- Threat
- S(F)
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- S(b);OGATE::QAB(A)
- Refutation
- P(e);
- Try
- B(G);
- Threat
- S(F)
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- S(b);OGATE::QAB(A)
- Refutation
- P(e);
- Try
- B(G);
- Threat
- S(F)
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- S(b);OGATE::QAB(A)
- Refutation
- P(e);
- Try
- R(C);CHECK
- Vars
- K(d);S_FLIGHT::QAR1(A)
- Refutation
- P(e);P_SPINP(e)
- Try
- R(E);CHECK
- Vars
- K(d);S_FLIGHT::QAR1(A)
- Refutation
- P(g);P_SPINP(g)
- Try
- Q(A);
- Threat
- QAR1(A),XP(f)
- Vars
- S(a);N_GUARD,XR(C)::QAB(A)
- P(e);OGATEB::QAB(A)
- S(a);N_GUARD::QAB1(A),XS(a)
- S(b);SBLOCK::S(B)
- Refutation
- S(b);
- Try
- Q(A);
- Threat
- QAR1(A),XP(f)
- Vars
- P(g);OGATEB::QAB(A)
- S(a);SBLOCK::S(F)
- S(b);N_GUARD::QAB1(A),XS(b)
- S(b);N_GUARD::QAB(A)
- Refutation
- S(a);XR(C)
- Try
- Q(A);XS(a)
- Threat
- DUALS(2)
- Vars
- S(b);OGATE::QAB(A)
- P(e);OGATEB::QAB(A)
- P(c);::QAB(A)
- Refutation
- P(c);
- Try
- Q(A);XS(b)
- Threat
- DUALS(2)
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- P(g);OGATEB::QAB(A)
- P(c);::QAB(A)
- Refutation
- P(c);
- Try
- Actual
- P(I);
- Vars
- S(a);OGATE,XR(C)::QAB(A)
- S(b);OGATE,XS(B)::QAB(A)
- S(b);OGATE::QAB(A)
- P(e);OGATEB::QAB(I)
- P(g);OGATEB::QAB(I)
- S(a);SBLOCK::S(F)
- S(b);SBLOCK::S(B)
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