MESON Chess Problem Database
Problem Display
PID: 179940 (8/2r3pK/3BQ1Bp/8/1NqkNb2/1P3p2/3P4/2r5 w - - 0 1)
Gross, Erwin
Die Schwalbe, 1962
#2
8 + 8
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Qd5#
- 1...Qe2
- 2.Qd5#
- 1...Qd3
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Qa6
- 2.Qd5#
- 1...Qc2
- 2.Qd5#
- 1...Qc3
- 2.Qd5#
- 1...Be3
- 2.Be5#
- 2.Qe5#
- 1...Be5
- 2.Bxe5#
- 2.Qxe5#
- 1...Bg5
- 2.Be5#
- 2.Qe5#
- 1...Qf1
- Tries
- 1.Sc3?
- threat
- 2.Qe4#
- 1...Qxe6
- 2.Sb5#
- 1...Bxd2
- 2.Qe5#
- 1...Bxd6
- 2.Qe3#
- 1...Qe2
- 2.Qd5#
- 1...Qd3
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Re1
- 2.Sc2#
- 1...Re7
- 2.Qxc4#
- 1...Be5
- 2.Qxe5#
- 1...Qc6!
- threat
- 1.Sg3?
- threat
- 2.Sf5#
- 2.Qe4#
- 1...Qxb4
- 2.Qe4#
- 1...Bxd2
- 2.Qe5#
- 1...Bxg3
- 2.Qe3#
- 2.Qe4#
- 1...Bxd6
- 2.Qe3#
- 1...Qc6
- 2.Sf5#
- 1...Qe2
- 2.Sf5#
- 2.Qd5#
- 1...Qd3
- 2.Qd5#
- 1...Qb5
- 2.Qe4#
- 1...Qd5
- 2.Qxd5#
- 1...Qc2
- 2.Qd5#
- 1...Qc5
- 2.Qe4#
- 1...Re1
- 2.Sf5#
- 1...Rc5
- 2.Qe4#
- 1...Re7
- 2.Sf5#
- 1...Rf7
- 2.Qe4#
- 1...Be5
- 2.Qxe5#
- 1...Qxe6!
- threat
- 1.Sg5?
- threat
- 2.Sxf3#
- 2.Qe4#
- 1...Qxb3
- 2.Qe4#
- 1...Qxe6
- 2.Sxf3#
- 2.Sxe6#
- 1...Bxd2
- 2.Qe5#
- 1...Bxg5
- 2.Qe4#
- 2.Qe5#
- 1...Bxd6
- 2.Qe3#
- 1...hxg5
- 2.Qe4#
- 1...Qf1
- 2.Qd5#
- 2.Qe4#
- 1...Qe2
- 2.Qd5#
- 1...Qd3
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Qc2
- 2.Sxf3#
- 2.Qd5#
- 1...Qc3
- 2.Qd5#
- 2.Qe4#
- 1...Re1
- 2.Sxf3#
- 1...Rf1
- 2.Qe4#
- 1...Rc3
- 2.Qe4#
- 1...Re7
- 2.Sxf3#
- 1...Be5
- 2.Sxf3#
- 2.Qxe5#
- 1...f2
- 2.Sf3#
- 2.Qe4#
- 1...Qc6!
- threat
- 1.Qf6+?
- 1...Be5
- 2.Bxe5#
- 2.Qxe5#
- 1...gxf6+!
- 1...Be5
- 1.bxc4?
- threat
- 2.Qd5#
- 1...Rc5
- 2.Bxc5#
- 1...Bxd2!
- threat
- 1.Sc3?
- Keys
- 1.Sc5!
- threat
- 2.Qe4#
- 1...Qxe6
- 2.Sxe6#
- 1...Bxd2
- 2.Qe5#
- 1...Bxd6
- 2.Qe3#
- 1...Qe2
- 2.Qd5#
- 1...Qd3
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Qc2
- 2.Qd5#
- 1...Re1
- 2.Qxc4#
- 1...Re7
- 2.Sc6#
- 1...Be5
- 2.Qxe5#
- threat
- 1.Sc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 3
- Sets
- Q(c);N_GUARD::QAR1(F)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- Tries
- Try
- S(D);
- Threat
- QAR1(F)
- Vars
- Q(c);N_GUARD,XQ(F)::S(D)
- B(e);N_GUARD,XP(A)::QAB1(F)
- B(e);N_GUARD,XB(E)::QAB1(F)
- Q(c);N_GUARD::QAR1(F)
- Q(c);N_GUARD,P_PINB(G)::QAR1(F)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- R(a);N_GUARD::S(C)
- R(g);N_GUARD::QAR1(F),XQ(c)
- B(e);N_GUARD::QAB1(F),XB(e)
- Refutation
- Q(c);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(c);XS(C)::QAR1(F)
- B(e);N_GUARD,XP(A)::QAB1(F)
- B(e);N_GUARD,XB(E)::QAB1(F)
- Q(c);::S(D)
- Q(c);N_GUARD,P_PINB(G)::QAR1(F)
- Q(c);::QAR1(F)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- R(a);::S(D)
- R(g);::QAR1(F)
- R(g);::S(D)
- B(e);N_GUARD::QAB1(F),XB(e)
- Refutation
- Q(c);XQ(F)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(c);XP(B)::QAR1(F)
- B(e);N_GUARD,XP(A)::QAB1(F)
- B(e);N_GUARD,XB(E)::QAB1(F)
- P(f);XS(D)::QAR1(F)
- Q(c);N_GUARD::QAR1(F)
- Q(c);N_GUARD,P_PINB(G)::QAR1(F)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- R(a);::S(D),XP(b)
- R(a);::QAR1(F)
- R(g);::S(D),XP(b)
- Refutation
- Q(c);
- Try
- Q(F);CHECK
- Refutation
- P(h);CHECK,XQ(F)
- Try
- P(B);XQ(c)
- Threat
- QAR1(F)
- Vars
- R(g);N_GUARD::B(E),XR(g)
- Refutation
- B(e);XP(A)
- Try
- Actual
- S(D);
- Threat
- QAR1(F)
- Vars
- Q(c);XQ(F)::S(D),XQ(c)
- B(e);N_GUARD,XP(A)::QAB1(F)
- B(e);N_GUARD,XB(E)::QAB1(F)
- Q(c);N_GUARD::QAR1(F)
- Q(c);N_GUARD,P_PINB(G)::QAR1(F)
- Q(c);N_GUARD::QAR1(F),XQ(c)
- R(a);N_GUARD::QAR1(F),XQ(c)
- R(g);N_GUARD::S(C)
- B(e);N_GUARD::QAB1(F),XB(e)
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