MESON Chess Problem Database
Problem Display
PID: 176387 (3r2B1/npQPPp1K/1P3ppn/Rp1k2N1/1p1N4/2PP4/q7/2r4b w - - 0 1)
Piatesi, Antonio
Schach-Echo, 1976
#2
11 + 13
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qc4
- 2.dxc4#
- 1...Be4
- 2.dxe4#
- 1...Sg4
- 2.Bxf7#
- 1...Sf5
- 2.Bxf7#
- 1...Sc6
- 2.Rxb5#
- 1...Sc8
- 2.Rxb5#
- 1...Qc4
- Tries
- 1.Sxb5?
- threat
- 2.Qd6#
- 1...Sxb5
- 2.Rxb5#
- 1...Qh2
- 2.Sxa7#
- 1...Sf5
- 2.Bxf7#
- 1...Sc8
- 2.Sa3#
- 1...Rxd7!
- threat
- 1.Sf5?
- threat
- 2.Se3#
- 2.Qd6#
- 1...Rxc3
- 2.Qd6#
- 1...Rxd7
- 2.Se3#
- 1...Sxf5
- 2.Bxf7#
- 1...bxc3
- 2.Qd6#
- 1...fxg5
- 2.Qd6#
- 1...Sc6
- 2.Rxb5#
- 2.Qd6#
- 1...Qd2
- 2.Qd6#
- 1...Qe2
- 2.Qd6#
- 1...Qf2
- 2.Qd6#
- 1...Qh2
- 2.Se3#
- 1...Re1
- 2.Qd6#
- 1...Sg4
- 2.Bxf7#
- 2.Qd6#
- 1...Sc8
- 2.Se3#
- 2.Rxb5#
- 1...gxf5!
- threat
- 1.Se4?
- threat
- 2.Sxf6#
- 2.Qd6#
- 2.Qc5#
- 1...Rxc3
- 2.Qd6#
- 1...Rxd7
- 2.Sxf6#
- 2.Qc5#
- 1...Sxg8
- 2.Qd6#
- 2.Qc5#
- 1...bxc3
- 2.Qd6#
- 2.Qc5#
- 1...Qc4
- 2.Sxf6#
- 2.Qd6#
- 1...Qf2
- 2.Qd6#
- 2.Qc5#
- 1...Qh2
- 2.Sxf6#
- 2.Qc5#
- 1...Rf1
- 2.Qd6#
- 2.Qc5#
- 1...Rc8
- 2.Sxf6#
- 2.Qd6#
- 1...Sg4
- 2.Bxf7#
- 2.Qd6#
- 2.Qc5#
- 1...Sf5
- 2.Sxf6#
- 2.Bxf7#
- 2.Qc5#
- 1...Sc6
- 2.Rxb5#
- 2.Qd6#
- 1...Sc8
- 2.Sxf6#
- 2.Rxb5#
- 2.Qc5#
- 1...f5
- 2.Sf6#
- 2.Qd6#
- 2.Qc5#
- 1...Bxe4!
- threat
- 1.Sge6?
- threat
- 2.Sf4#
- 2.Qc5#
- 1...bxc3
- 2.Qc5#
- 1...fxe6
- 2.Bxe6#
- 1...Qc4
- 2.Sf4#
- 1...Qd2
- 2.Qc5#
- 1...Qf2
- 2.Qc5#
- 1...Qh2
- 2.Qc5#
- 1...Rf1
- 2.Qc5#
- 1...Rc8
- 2.Sf4#
- 1...Sc6
- 2.Rxb5#
- 1...g5
- 2.Qc5#
- 1...Rxc3!
- threat
- 1.e8S?
- threat
- 2.Sxf6#
- 2.Qd6#
- 1...Rxc3
- 2.Qd6#
- 1...Rxd7
- 2.Sxf6#
- 1...Sxg8
- 2.Qd6#
- 1...bxc3
- 2.Qd6#
- 1...fxg5
- 2.Sf6#
- 2.Qd6#
- 1...Sc6
- 2.Rxb5#
- 2.Qd6#
- 1...Qf2
- 2.Qd6#
- 1...Qh2
- 2.Sxf6#
- 1...Rf1
- 2.Qd6#
- 1...Sg4
- 2.Bxf7#
- 2.Qd6#
- 1...Sf5
- 2.Sxf6#
- 2.Bxf7#
- 1...Sc8
- 2.Sxf6#
- 2.Rxb5#
- 1...f5
- 2.Sf6#
- 2.Qd6#
- 1...Rxe8!
- threat
- 1.Sxb5?
- Keys
- 1.Sxf7!
- threat
- 2.Qd6#
- 1...Rxd7
- 2.Sxh6#
- 1...Sxf7
- 2.Bxf7#
- 1...Qh2
- 2.Qc4#
- 1...Sf5
- 2.Sxd8#
- 1...Sc8
- 2.Rxb5#
- threat
- 1.Sxf7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- Q(c);OGATE::P(B),XQ(c)
- B(b);OGATE::P(B),XB(b)
- S(i);N_GUARD::B(K),XP(l)
- S(j);N_GUARD::R(D),XP(e)
- Tries
- Try
- S(C);P_PINP(l),XP(e)
- Threat
- QAR1(G)
- Vars
- S(j);OGATE,P_SPINS(j),XS(C)::R(D),XS(j)
- Q(c);N_GUARD::R(D)+S(C),XS(j)
- S(i);N_GUARD::B(K),XP(l)
- S(j);N_GUARD::R(D)+S(C)
- Refutation
- R(m);XP(H)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- R(a);XP(A)::QAR1(G)
- R(m);XP(H)::S(C)
- S(i);N_GUARD,XS(C)::B(K),XP(l)
- P(d);XP(A)::QAR1(G)
- P(g);XS(E)::QAR1(G)
- Q(c);::QAR1(G)
- Q(c);::S(C)
- R(a);::QAR1(G)
- Refutation
- P(h);XS(C)
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- R(a);XP(A)::QAR1(G)
- Refutation
- B(b);XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- P(d);XP(A)::QAR1(G)
- P(l);OGATE,XS(E)::B(K),XP(l)
- Q(c);::S(E)
- Q(c);::QAR1(G)
- R(a);::QAR1(G)
- R(m);::S(E)
- S(j);N_GUARD::R(D),XP(e)
- P(h);::QAR1(G)
- Refutation
- R(a);XP(A)
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- R(a);XP(A)::QAR1(G)
- R(m);XP(H)::S(I),XP(g)
- S(i);XB(K)::QAR1(G)
- P(d);XP(A)::QAR1(G)
- Q(c);::QAR1(G)
- Q(c);::S(I),XP(g)
- R(a);::QAR1(G)
- Refutation
- R(m);XS(I)
- Try
- Actual
- S(E);XP(l)
- Threat
- QAR1(G)
- Vars
- R(m);N_GUARD,XP(H)::B(K)+S(E),XS(i)
- S(i);OGATE,P_SPINS(i),XS(E)::B(K),XS(i)
- Q(c);N_GUARD::QAB1(G)
- S(i);N_GUARD::B(K)+S(E),XR(m)
- S(j);N_GUARD::R(D),XP(e)
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