MESON Chess Problem Database
Problem Display
PID: 146106 (K3nN2/1Qp5/7R/2p1BkN1/3P2pP/2n2b2/3ppR2/4bq2 w - - 0 1)
Strerath, Otto
Arbeits Deutscher Schachverbande, 1949
#2
9 + 11
| 14868 | Pirnie Collection | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 2.Qc8#
- 1...Sb5
- 2.Qe4#
- 1...Sd5
- 2.Qc8#
- 2.Qb1#
- 1...Sd6
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sg7
- 2.Rf6#
- 1...g3
- 2.Qxf3#
- 1...c6
- 2.Qc8#
- 2.Qd7#
- 2.Qh7#
- 1...Sb1
- Tries
- 1.Kb8?
- threat
- 2.Qc8#
- 1...Sd6
- 2.Rf6#
- 1...Sf6
- 2.Rxf6#
- 1...Sg7
- 2.Rf6#
- 1...cxd4!
- threat
- 1.Sxf3?
- threat
- 2.Rh5#
- 1...gxf3
- 2.Qxf3#
- 1...Sd5
- 2.Qb1#
- 1...c6
- 2.Qh7#
- 1...Se4
- 2.Qc8#
- 1...Sf6
- 2.Rxf6#
- 1...Sg7
- 2.Rf6#
- 1...g3!
- threat
- 1.Se4?
- threat
- 2.Sg3#
- 2.Rh5#
- 1...Qxf2
- 2.Rh5#
- 1...Bxf2
- 2.Rh5#
- 1...Sxe4
- 2.Qc8#
- 1...cxd4
- 2.Rh5#
- 1...Sd5
- 2.Sg3#
- 1...c6
- 2.Sg3#
- 2.Qh7#
- 1...Qg2
- 2.Rh5#
- 1...Qh3
- 2.Rh5#
- 1...Qg1
- 2.Rh5#
- 1...Sf6
- 2.Sg3#
- 2.Rxf6#
- 1...Sg7
- 2.Sg3#
- 2.Rf6#
- 1...g3!
- threat
- 1.Sge6?
- threat
- 2.Rh5#
- 1...Sd5
- 2.Qb1#
- 1...g3
- 2.Qxf3#
- 1...c6
- 2.Qh7#
- 1...Sf6
- 2.Sg7#
- 2.Rxf6#
- 1...Sg7
- 2.Sxg7#
- 2.Rf6#
- 1...Se4!
- threat
- 1.Sf7?
- threat
- 2.Rh5#
- 1...Sd5
- 2.Qb1#
- 1...g3
- 2.Qxf3#
- 1...Se4
- 2.Qc8#
- 1...Sf6
- 2.Rxf6#
- 1...Sg7
- 2.Rf6#
- 1...c6!
- threat
- 1.Sgh7?
- threat
- 2.Rh5#
- 1...Sd5
- 2.Qb1#
- 1...g3
- 2.Qxf3#
- 1...Se4
- 2.Qc8#
- 1...Sf6
- 2.Rxf6#
- 1...Sg7
- 2.Rf6#
- 1...c6!
- threat
- 1.Sg6?
- threat
- 2.Se7#
- 1...g3
- 2.Qxf3#
- 1...Sd5
- 2.Qc8#
- 2.Qb1#
- 1...cxd4!
- threat
- 1.Rxf3+?
- 1...gxf3
- 2.Qc8#
- 1...Qxf3!
- 1...gxf3
- 1.Kb8?
- Keys
- 1.Sh3!
- threat
- 2.Rh5#
- 1...gxh3
- 2.Qxf3#
- 1...Sd5
- 2.Qb1#
- 1...g3
- 2.Qxf3#
- 1...c6
- 2.Qh7#
- 1...Se4
- 2.Qc8#
- 1...Sf6
- 2.Rxf6#
- 1...Sg7
- 2.Rf6#
- threat
- 1.Sh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- S(e);N_GUARD::QAB1(G)
- S(k);N_GUARD::R1(F)
- S(k);N_GUARD::R1(F),XS(k)
- P(g);N_GUARD::QAR2(G),XB(f)
- Tries
- Try
- K(H);N_SPINQ(G),P-FLIGHT
- Threat
- QAB(G)
- Vars
- S(k);N_GUARD::R1(F)
- S(k);N_GUARD::R1(F),XS(k)
- Refutation
- P(h);XP(B)
- Try
- S(E);N_SPINQ(G),XB(f)
- Threat
- R(F)
- Vars
- P(g);OGATE,P_SPINP(g),XS(E)::QAR2(G),XP(g)
- S(e);N_GUARD::QAB(G)
- P(j);OGATE::QAB(G)
- S(e);SBLOCK::QAB(G)
- S(k);N_GUARD::R1(F),XS(k)
- S(k);N_GUARD::R1(F)
- Refutation
- P(g);
- Try
- S(E);N_SPINQ(G)
- Threat
- DUALS(2)
- Vars
- Q(b);N_SPINB(f),XR(A)::R(F)
- B(a);N_SPINB(f),XR(A)::R(F)
- S(e);SBLOCK,XS(E)::QAB(G)
- P(h);XP(B)::R(F)
- S(e);::S(E)
- Q(b);::R(F)
- Refutation
- P(g);
- Try
- S(E);
- Threat
- R(F)
- Vars
- S(e);N_PINQ(G)::QAB(G)
- P(g);N_GUARD::QAR2(G),XB(f)
- P(j);N_PINQ(G)::QAB(G)
- Refutation
- S(e);N_PINQ(G)
- Try
- S(E);
- Threat
- R(F)
- Vars
- S(e);N_PINQ(G)::QAB(G)
- P(g);N_GUARD::QAR2(G),XB(f)
- S(e);N_PINQ(G),SBLOCK::QAB(G)
- S(k);N_GUARD::R1(F),XS(k)
- S(k);N_GUARD::R1(F)
- Refutation
- P(j);N_PINQ(G)
- Try
- S(E);
- Threat
- R(F)
- Vars
- S(e);N_PINQ(G)::QAB(G)
- P(g);N_GUARD::QAR2(G),XB(f)
- S(e);N_PINQ(G),SBLOCK::QAB(G)
- S(k);N_GUARD::R1(F),XS(k)
- S(k);N_GUARD::R1(F)
- Refutation
- P(j);N_PINQ(G)
- Try
- S(I);
- Threat
- S(I)
- Vars
- P(g);N_GUARD::QAR2(G),XB(f)
- Refutation
- P(h);XP(B)
- Try
- R(A);CHECK,N_SPINQ(G),XB(f)
- Vars
- P(g);XR(A)::QAB(G)
- Refutation
- Q(b);P_PINQ(G),XR(A)
- Try
- Actual
- S(E);
- Threat
- R(F)
- Vars
- P(g);N_GUARD,XS(E)::QAR2(G),XB(f)
- S(e);N_PINQ(G)::QAB(G)
- P(g);N_GUARD::QAR2(G),XB(f)
- P(j);N_PINQ(G)::QAB(G)
- S(e);N_PINQ(G),SBLOCK::QAB(G)
- S(k);N_GUARD::R1(F),XS(k)
- S(k);N_GUARD::R1(F)
Developed and maintained by Brian Stephenson.
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