MESON Chess Problem Database
Problem Display
PID: 170204 (B7/P3p1p1/k3pq2/4pQ2/1K1B4/6Rr/7R/2n1r3 w - - 0 1)
Nievergelt, Andreas
Tages-Anzeiger, 1989
#2
7 + 9
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qh4
- 2.Qxe6#
- 1...Qg5
- 2.Qxe6#
- 1...Qf8
- 2.Qxe6#
- 1...Rxh2
- 2.Ra3#
- 1...Rh4
- 2.Ra3#
- 1...Rh5
- 2.Ra3#
- 1...Rh6
- 2.Ra3#
- 1...Rh7
- 2.Ra3#
- 1...Rh8
- 2.Ra3#
- 1...Sa2+
- 2.Rxa2#
- 1...Se2
- 2.Qd3#
- 1...Sb3
- 2.Qd3#
- 1...Sd3+
- 2.Qxd3#
- 1...exd4
- 2.Qa5#
- 1...e4
- 2.Qa5#
- 2.Qb5#
- 1...Qh4
- Tries
- 1.Bg2?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Sd3+
- 2.Qxd3#
- 1...Qxf5
- 2.a8Q#
- 2.a8R#
- 1...Rxh2
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rxg3
- 2.a8Q#
- 2.a8R#
- 1...exd4
- 2.Qa5#
- 1...exf5
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg5
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg6
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Qf7
- 2.a8Q#
- 2.a8R#
- 1...Qf8
- 2.Qxe6#
- 1...Rd1
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.a8Q#
- 2.a8R#
- 1...Rh1
- 2.a8Q#
- 2.a8R#
- 1...Re2
- 2.a8Q#
- 2.a8R#
- 1...Re3
- 2.a8Q#
- 2.a8R#
- 1...Rh4
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh5
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh6
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh8
- 2.Ra3#
- 1...Se2
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...Sb3
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...g5
- 2.a8Q#
- 2.a8R#
- 1...g6
- 2.a8Q#
- 2.a8R#
- 1...Sa2+!
- threat
- 1.Bf3?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...Qxf5
- 2.a8Q#
- 2.a8R#
- 1...Rxh2
- 2.a8Q#
- 2.a8R#
- 1...Rxg3
- 2.a8Q#
- 2.a8R#
- 1...exd4
- 2.Qa5#
- 1...exf5
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg5
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg6
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Qf7
- 2.a8Q#
- 2.a8R#
- 1...Qf8
- 2.Qxe6#
- 1...Rd1
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.a8Q#
- 2.a8R#
- 1...Rh1
- 2.a8Q#
- 2.a8R#
- 1...Re2
- 2.a8Q#
- 2.a8R#
- 1...Re3
- 2.a8Q#
- 2.a8R#
- 1...Rh4
- 2.a8Q#
- 2.a8R#
- 1...Rh5
- 2.a8Q#
- 2.a8R#
- 1...Rh6
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.a8Q#
- 2.a8R#
- 1...Se2
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...Sb3
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...g5
- 2.a8Q#
- 2.a8R#
- 1...g6
- 2.a8Q#
- 2.a8R#
- 1...Rh8!
- threat
- 1.Be4?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Sa2+
- 2.Rxa2#
- 1...Qxf5
- 2.a8Q#
- 2.a8R#
- 1...Rxh2
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rxg3
- 2.a8Q#
- 2.a8R#
- 1...exd4
- 2.Qa5#
- 1...exf5
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg5
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg6
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Qf7
- 2.a8Q#
- 2.a8R#
- 1...Qf8
- 2.Qxe6#
- 1...Rd1
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.a8Q#
- 2.a8R#
- 1...Rh1
- 2.a8Q#
- 2.a8R#
- 1...Re2
- 2.a8Q#
- 2.a8R#
- 1...Re3
- 2.a8Q#
- 2.a8R#
- 1...Rh4
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh5
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh6
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh8
- 2.Ra3#
- 1...Se2
- 2.a8Q#
- 2.a8R#
- 1...Sb3
- 2.a8Q#
- 2.a8R#
- 1...g5
- 2.a8Q#
- 2.a8R#
- 1...g6
- 2.a8Q#
- 2.a8R#
- 1...Sd3+!
- threat
- 1.Bd5?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...Qxf5
- 2.a8Q#
- 2.a8R#
- 1...Rxh2
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rxg3
- 2.a8Q#
- 2.a8R#
- 1...exf5
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg5
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg6
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Qf7
- 2.a8Q#
- 2.a8R#
- 1...Qf8
- 2.Qxe6#
- 1...Rd1
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.a8Q#
- 2.a8R#
- 1...Rh1
- 2.a8Q#
- 2.a8R#
- 1...Re2
- 2.a8Q#
- 2.a8R#
- 1...Re3
- 2.a8Q#
- 2.a8R#
- 1...Re4
- 2.a8Q#
- 2.a8R#
- 1...Rh4
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh5
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh6
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh8
- 2.Ra3#
- 1...Se2
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...Sb3
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...e4
- 2.a8Q#
- 2.a8R#
- 1...g5
- 2.a8Q#
- 2.a8R#
- 1...g6
- 2.a8Q#
- 2.a8R#
- 1...exd4!
- threat
- 1.Bc6?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...Qxf5
- 2.a8Q#
- 2.a8R#
- 1...Rxh2
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rxg3
- 2.a8Q#
- 2.a8R#
- 1...exd4
- 2.Qa5#
- 1...exf5
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.a8Q#
- 2.a8R#
- 1...Qg5
- 2.a8Q#
- 2.a8R#
- 1...Qg6
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Qf7
- 2.a8Q#
- 2.a8R#
- 1...Rd1
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.a8Q#
- 2.a8R#
- 1...Rh1
- 2.a8Q#
- 2.a8R#
- 1...Re2
- 2.a8Q#
- 2.a8R#
- 1...Re3
- 2.a8Q#
- 2.a8R#
- 1...Re4
- 2.a8Q#
- 2.a8R#
- 1...Rh4
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh5
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh6
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh8
- 2.Ra3#
- 1...Se2
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...Sb3
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...e4
- 2.Qa5#
- 2.Qb5#
- 2.a8Q#
- 2.a8R#
- 1...g5
- 2.a8Q#
- 2.a8R#
- 1...g6
- 2.a8Q#
- 2.a8R#
- 1...Qf8!
- threat
- 1.Rc2?
- threat
- 2.Rc6#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...exd4
- 2.Qa5#
- 1...exf5!
- threat
- 1.Rgxh3?
- threat
- 2.Ra3#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...exd4
- 2.Qa5#
- 1...Sb3
- 2.Qd3#
- 1...Re3!
- threat
- 1.Qc2?
- threat
- 2.Qa4#
- 2.Qc4#
- 2.Qc6#
- 2.Qc8#
- 1...Sa2+
- 2.Qxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...Qf1
- 2.Qa4#
- 2.Qc6#
- 2.Qc8#
- 1...Qf3
- 2.Qa4#
- 2.Qc4#
- 1...Qf8
- 2.Qa4#
- 2.Qc4#
- 2.Qc6#
- 1...Rh8
- 2.Ra3#
- 2.Qa4#
- 2.Qc4#
- 2.Qc6#
- 1...Sb3
- 2.Qd3#
- 2.Qc4#
- 2.Qc6#
- 2.Qc8#
- 1...exd4!
- threat
- 1.Qe4?
- threat
- 2.Bb7#
- 2.Qc6#
- 2.Qb7#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...exd4
- 2.Qb7#
- 1...Qf3
- 2.Bb7#
- 1...Rxe4!
- threat
- 1.Qf3?
- threat
- 2.Bb7#
- 2.Qc6#
- 2.Qb7#
- 2.Qa3#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...Rxg3
- 2.Bb7#
- 2.Qc6#
- 2.Qb7#
- 1...exd4
- 2.Qb7#
- 1...Re3
- 2.Bb7#
- 2.Qc6#
- 2.Qb7#
- 1...Re4
- 2.Qa3#
- 1...Sb3
- 2.Bb7#
- 2.Qc6#
- 2.Qb7#
- 2.Qd3#
- 1...e4
- 2.Qa3#
- 1...Qxf3!
- threat
- 1.Bg2?
- Keys
- 1.Bh1!
- threat
- 2.a8Q#
- 2.a8R#
- 1...Sa2+
- 2.Rxa2#
- 1...Sd3+
- 2.Qxd3#
- 1...Qxf5
- 2.a8Q#
- 2.a8R#
- 1...Rxh2
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rxg3
- 2.a8Q#
- 2.a8R#
- 1...exd4
- 2.Qa5#
- 1...exf5
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg5
- 2.Qxe6#
- 2.a8Q#
- 2.a8R#
- 1...Qg6
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Qf7
- 2.a8Q#
- 2.a8R#
- 1...Qf8
- 2.Qxe6#
- 1...Rd1
- 2.a8Q#
- 2.a8R#
- 1...Rf1
- 2.a8Q#
- 2.a8R#
- 1...Rg1
- 2.a8Q#
- 2.a8R#
- 1...Re2
- 2.a8Q#
- 2.a8R#
- 1...Re3
- 2.a8Q#
- 2.a8R#
- 1...Rh4
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh5
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh6
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.Ra3#
- 2.a8Q#
- 2.a8R#
- 1...Rh8
- 2.Ra3#
- 1...Se2
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...Sb3
- 2.Qd3#
- 2.a8Q#
- 2.a8R#
- 1...g5
- 2.a8Q#
- 2.a8R#
- 1...g6
- 2.a8Q#
- 2.a8R#
- threat
- 1.Bh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 9
- Sets
- Q(g);N_GUARD,P_PINB(D),SBLOCK::QAR(E),XP(f)
- Q(g);N_GUARD::QAR(E),XP(f)
- R(c);N_GUARD,XR(A)::R(B)
- R(c);N_GUARD,P_PINB(D)::R(B)
- R(c);N_GUARD::R(B)
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);N_GUARD::QAB(E)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- P(d);OGATE,XB(D)::QAR1(E)
- Tries
- Try
- B(G);
- Threat
- P=Q
- Vars
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- Q(g);XQ(E)::P=Q
- R(c);XR(B)::P=Q
- P(d);OGATE,XB(D)::QAR1(E)
- P(f);XQ(E)::P=Q
- Q(g);::P=Q
- Q(g);SBLOCK::P=Q
- Q(g);N_GUARD::QAR(E),XP(f)
- R(b);::P=Q
- R(c);N_GUARD::R(B)
- P(i);::P=Q
- Refutation
- S(a);CHECK
- Try
- B(G);
- Threat
- P=Q
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- Q(g);XQ(E)::P=Q
- R(c);XR(A)::P=Q
- R(c);XR(B)::P=Q
- P(d);OGATE,XB(D)::QAR1(E)
- P(f);XQ(E)::P=Q
- Q(g);::P=Q
- Q(g);SBLOCK::P=Q
- Q(g);N_GUARD::QAR(E),XP(f)
- R(b);::P=Q
- R(c);P_PINB(D)::P=Q
- R(c);::P=Q
- P(i);::P=Q
- Refutation
- R(c);
- Try
- B(G);
- Threat
- P=Q
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- Q(g);XQ(E)::P=Q
- R(c);XR(B)::P=Q
- P(d);OGATE,XB(D)::QAR1(E)
- P(f);XQ(E)::P=Q
- Q(g);::P=Q
- Q(g);SBLOCK::P=Q
- Q(g);N_GUARD::QAR(E),XP(f)
- R(b);::P=Q
- R(c);N_GUARD::R(B)
- S(a);::P=Q
- P(i);::P=Q
- Refutation
- S(a);CHECK
- Try
- B(G);
- Threat
- P=Q
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- Q(g);XQ(E)::P=Q
- R(c);XR(B)::P=Q
- P(f);XQ(E)::P=Q
- Q(g);::P=Q
- Q(g);SBLOCK::P=Q
- Q(g);N_GUARD::QAR(E),XP(f)
- R(b);::P=Q
- R(b);P_PINB(D)::P=Q
- R(c);N_GUARD::R(B)
- P(d);::P=Q
- P(i);::P=Q
- Refutation
- P(d);XB(D)
- Try
- B(G);
- Threat
- P=Q
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- Q(g);XQ(E)::P=Q
- R(c);XR(B)::P=Q
- P(d);OGATE,XB(D)::QAR1(E)
- P(f);XQ(E)::P=Q
- Q(g);P_PINB(D),SBLOCK::P=Q
- Q(g);::P=Q
- Q(g);SBLOCK::P=Q
- R(b);::P=Q
- R(b);P_PINB(D)::P=Q
- R(c);N_GUARD::R(B)
- P(i);::P=Q
- Refutation
- Q(g);
- Try
- R(A);
- Threat
- R(A)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- P(d);OGATE,XB(D)::QAR1(E)
- Refutation
- P(f);XQ(E)
- Try
- R(B);XR(c)
- Threat
- R(B)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- P(d);OGATE,XB(D)::QAR1(E)
- S(a);N_GUARD::QAB(E)
- Refutation
- R(b);
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- S(a);CHECK,N_GUARD::QAR(E),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- Refutation
- P(d);XB(D)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- P(d);XB(D)::QAB1(E)
- Q(g);::B(G)
- Refutation
- R(b);P_PINB(D),XQ(E)
- Try
- Q(E);
- Threat
- DUALS(4)
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- P(d);XB(D)::QAB1(E)
- R(b);P_PINB(D)::QAR(E)
- P(d);::QAR(E)
- Refutation
- Q(g);XQ(E)
- Try
- Actual
- B(G);
- Threat
- P=Q
- Vars
- S(a);CHECK,N_GUARD::R(A),XS(a)
- S(a);CHECK,N_GUARD::QAB(E),XS(a)
- Q(g);XQ(E)::P=Q
- R(c);XR(B)::P=Q
- P(d);OGATE,XB(D)::QAR1(E)
- P(f);XQ(E)::P=Q
- Q(g);::P=Q
- Q(g);SBLOCK::P=Q
- Q(g);N_GUARD::QAR(E),XP(f)
- R(b);::P=Q
- R(c);N_GUARD::R(B)
- P(i);::P=Q
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).