MESON Chess Problem Database
Problem Display
PID: 151381 (3rB3/8/2R2pK1/1p1k1N2/7Q/qn1N1P2/5n2/B1b1R2b w - - 0 1)
Myllyniemi, Matti Arvo
L'Italia Scacchistica, 1976
#2
9 + 9
| 23 | Die Schwalbe | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qb2
- 2.Sb4#
- 2.Se7#
- 1...Qb4
- 2.Sxb4#
- 1...Qe7
- 2.Sxe7#
- 1...Qxa1
- 2.Sb4#
- 2.Se7#
- 1...Qa2
- 2.Sb4#
- 2.Se7#
- 1...Qa4
- 2.Se7#
- 1...Qa5
- 2.Se7#
- 1...Qa6
- 2.Sb4#
- 2.Se7#
- 1...Qa7
- 2.Sb4#
- 1...Qa8
- 2.Sb4#
- 2.Se7#
- 1...Rd6
- 2.Se7#
- 1...Bb2
- 2.Sf4#
- 2.Se3#
- 1...Be3
- 2.Sxe3#
- 1...Bf4
- 2.Sxf4#
- 1...Sd1
- 2.Qe4#
- 1...Sxd3
- 2.Qe4#
- 1...Sh3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sxa1
- 2.Qd4#
- 1...Sd2
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sc5
- 2.Se7#
- 2.Qd4#
- 1...b4
- 2.Se7#
- 2.Qc4#
- 1...Qb2
- Tries
- 1.Rexc1?
- threat
- 2.Sf4#
- 2.Se3#
- 2.Bf7#
- 1...Qxc1
- 2.Sb4#
- 2.Se7#
- 1...Qxa1
- 2.Se3#
- 2.Se7#
- 2.Bf7#
- 1...Rxe8
- 2.Sf4#
- 1...Bxf3
- 2.Se3#
- 2.Bf7#
- 1...Sxd3
- 2.Se3#
- 2.Bf7#
- 2.Qe4#
- 1...Sxa1
- 2.Se3#
- 2.Bf7#
- 2.Qd4#
- 1...Sxc1
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Rd6
- 2.Sf4#
- 1...Qb2
- 2.Se3#
- 2.Se7#
- 2.Bf7#
- 1...Qb4
- 2.Sxb4#
- 2.Se3#
- 2.Bf7#
- 1...Qc5
- 2.Sf4#
- 1...Qe7
- 2.Sf4#
- 2.Sxe7#
- 1...Qf8
- 2.Sf4#
- 2.Se3#
- 1...Qa4
- 2.Se3#
- 2.Se7#
- 2.Bf7#
- 1...Qa7
- 2.Sb4#
- 2.Sf4#
- 1...Rd7
- 2.Sf4#
- 2.Se3#
- 1...Sd1
- 2.Sf4#
- 2.Bf7#
- 2.Qe4#
- 1...Sh3
- 2.Se3#
- 2.Bf7#
- 2.Qe4#
- 1...Sg4
- 2.Sf4#
- 2.Bf7#
- 1...Sd4
- 2.Se3#
- 2.Qxd4#
- 1...Sc5
- 2.Sf4#
- 2.Se3#
- 2.Se7#
- 2.Qd4#
- 1...Qd6!
- threat
- 1.Rc5+?
- 1...Sxc5
- 2.Qd4#
- 1...Qxc5!
- 1...Sxc5
- 1.Rd6+?
- 1...Rxd6
- 2.Se7#
- 1...Qxd6!
- 1...Rxd6
- 1.Qb4?
- threat
- 2.Se7#
- 1...Qxb4
- 2.Sxb4#
- 1...Rxe8
- 2.Rd6#
- 1...Qa7
- 2.Qxb3#
- 1...Rd7!
- threat
- 1.Qh5?
- threat
- 2.Se3#
- 2.Se7#
- 1...Qxa1
- 2.Sb4#
- 1...Rxe8
- 2.Se7#
- 1...Bxf3
- 2.Se7#
- 1...Qc5
- 2.Se3#
- 1...Rd7
- 2.Se7#
- 1...Sc5
- 2.Se3#
- 1...Qd6
- 2.Se7#
- 1...Qb2
- 2.Sb4#
- 1...Qe7
- 2.Se3#
- 2.Sxe7#
- 1...Rd6
- 2.Se7#
- 1...Bb2
- 2.Sf4#
- 1...Be3
- 2.Sxe3#
- 2.Se7#
- 1...Bg5
- 2.Se3#
- 1...Sxa1!
- threat
- 1.Rexc1?
- Keys
- 1.Rd1!
- threat
- 2.Sb4#
- 2.Sf4#
- 1...Qxa1
- 2.Se7#
- 1...Rxe8
- 2.Sb4#
- 1...Bxf3
- 2.Sb4#
- 1...Sxd1
- 2.Qe4#
- 1...Sxd3
- 2.Qe4#
- 1...Sxa1
- 2.Qd4#
- 1...Qd6
- 2.Sf4#
- 1...Rd6
- 2.Sf4#
- 1...Rd7
- 2.Sb4#
- 1...Qb2
- 2.Se7#
- 1...Qb4
- 2.Sxb4#
- 2.Sf4#
- 1...Qc5
- 2.Sb4#
- 1...Bb2
- 2.Se3#
- 1...Bd2
- 2.Sf4#
- 1...Bf4
- 2.Sb4#
- 2.Sxf4#
- 1...Sd2
- 2.Sf4#
- 2.Se3#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Sb4#
- 2.Se7#
- 2.Qd4#
- 1...b4
- 2.Sxb4#
- 2.Sf4#
- 2.Se7#
- 2.Qc4#
- threat
- 1.Rd1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 10
- Sets
- Q(d);N_GUARD::S(C),XQ(d)
- Q(d);N_GUARD::S(F),XQ(d)
- Q(d);N_GUARD::S(F)
- Q(d);N_GUARD::S(C)
- R(i);S_CUTQ(d)::S(F)
- B(a);N_GUARD::S(F),XB(a)
- B(a);N_GUARD::S(C),XB(a)
- S(c);N_GUARD::QAB1(E)
- S(c);N_GUARD,XS(C)::QAB1(E)
- S(c);N_GUARD::QAB1(E),XS(c)
- S(e);N_GUARD,XB(A)::QAR1(E)
- S(e);N_GUARD::QAR1(E),XS(e)
- S(e);N_GUARD::QAR1(E)
- Tries
- Try
- R(B);XB(a)
- Threat
- DUALS(3)
- Vars
- R(i);XB(I)::S(C)
- R(i);::S(C)
- Q(d);::S(C)
- Refutation
- Q(d);
- Try
- R(G);CHECK
- Vars
- S(e);XR(G)::QAR1(E)
- Refutation
- Q(d);XR(G)
- Try
- R(G);CHECK
- Vars
- R(i);SBLOCK,XR(G)::S(F)
- Refutation
- Q(d);XR(G)
- Try
- Q(E);
- Threat
- S(F)
- Vars
- Q(d);XQ(E)::S(C),XQ(d)
- R(i);N_GUARD,XB(I)::R1(G)
- Q(d);N_GUARD::QAB(E),XS(e)
- Refutation
- R(i);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XB(A)::S(C)
- R(i);XB(I)::QAR(E)+S(F),DCHECK
- B(b);XP(D)::QAR(E)+S(F),DCHECK
- Q(d);::QAR(E)+S(F),DCHECK
- R(i);::QAR(E)+S(F),DCHECK
- S(e);::QAR(E)+S(F),DCHECK
- Q(d);N_GUARD::S(C)
- B(a);N_GUARD::S(C)
- B(a);::S(F)
- Refutation
- S(e);XB(A)
- Try
- Actual
- R(B);
- Threat
- DUALS(2)
- Vars
- Q(d);N_GUARD,XB(A)::S(F)
- R(i);XB(I)::R(B)+S(C),DCHECK
- B(b);XP(D)::R(B)+S(C),DCHECK
- S(c);N_GUARD,XR(B)::QAB1(E)
- S(c);N_GUARD,P_SPINS(c),XS(C)::QAB1(E)
- S(e);N_GUARD,XB(A)::QAR1(E)
- Q(d);::R(B)+S(C),DCHECK
- R(i);::R(B)+S(C),DCHECK
- Q(d);N_GUARD::S(F)
- B(a);N_GUARD::S(F)
- B(a);::S(C)
- S(e);N_GUARD::QAR1(E),XS(e)
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