MESON Chess Problem Database
Problem Display
PID: 261349 (4b1B1/8/5b2/2n5/4p3/1n1NB3/5R2/3kNK1Q w - - 0 1)
Nievergelt, Andreas
Neue Zurcher Zeitung, 1989
#2
7 + 6
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bb2
- 2.Sxb2#
- 1...Bh4
- 2.Sb2#
- 1...Bg5
- 2.Sb2#
- 1...Be7
- 2.Sb2#
- 1...Bd8
- 2.Sb2#
- 1...Ba4
- 2.Qh5#
- 1...Bb5
- 2.Qh5#
- 1...Bh5
- 2.Qxh5#
- 1...Bc6
- 2.Qh5#
- 1...Sa1
- 2.Rd2#
- 1...Sc1
- 2.Rd2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sd4
- 2.Sb2#
- 2.Rd2#
- 1...Sa5
- 2.Rd2#
- 1...Sxd3
- 2.Bxb3#
- 1...Sa4
- 2.Bxb3#
- 1...Sa6
- 2.Bxb3#
- 1...Sb7
- 2.Bxb3#
- 1...Sd7
- 2.Bxb3#
- 1...exd3
- 2.Qf3#
- 1...Bb2
- Tries
- 1.Kg2?
- threat
- 2.Sc2#
- 2.Sf3#
- 1...Sxd3
- 2.Sxd3#
- 2.Bxb3#
- 1...Sd2
- 2.Rxd2#
- 1...Bc3!
- threat
- 1.Sf3?
- threat
- 2.Kg2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sxd3
- 2.Bxb3#
- 1...exf3
- 2.Qxf3#
- 1...Bc3!
- threat
- 1.Be6?
- threat
- 2.Bg4#
- 1...Sd2+
- 2.Rxd2#
- 1...Bh5
- 2.Qxh5#
- 1...Bd7
- 2.Qh5#
- 1...Sc1
- 2.Rd2#
- 1...Sd4
- 2.Sb2#
- 2.Rd2#
- 1...Sxe6!
- threat
- 1.Rb2?
- threat
- 2.Sf2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sxd3
- 2.Bxb3#
- 1...exd3
- 2.Qf3#
- 1...Bb5
- 2.Qh5#
- 1...Bh4!
- threat
- 1.Rc2?
- threat
- 2.Sf2#
- 1...Sd2+
- 2.Rxd2#
- 1...exd3
- 2.Qf3#
- 1...Bh4
- 2.Sb2#
- 1...Bb5
- 2.Qh5#
- 1...Sxd3!
- threat
- 1.Re2?
- threat
- 2.Sf2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sxd3
- 2.Bxb3#
- 1...Bh4
- 2.Sb2#
- 1...exd3!
- threat
- 1.Rg2?
- threat
- 2.Sf2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sxd3
- 2.Bxb3#
- 1...Bh4
- 2.Sb2#
- 1...Bb5
- 2.Qh5#
- 1...exd3!
- threat
- 1.Rh2?
- threat
- 2.Sf2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sxd3
- 2.Bxb3#
- 1...exd3
- 2.Qf3#
- 1...Bh4
- 2.Sb2#
- 1...Bb5!
- threat
- 1.Rf4?
- threat
- 2.Sf2#
- 1...Sxd3
- 2.Bxb3#
- 1...exd3
- 2.Qf3#
- 1...Bh4
- 2.Sb2#
- 1...Bb5
- 2.Qh5#
- 1...Sd2+!
- threat
- 1.Rf5?
- threat
- 2.Sf2#
- 1...Sxd3
- 2.Bxb3#
- 1...exd3
- 2.Qf3#
- 1...Bh4
- 2.Sb2#
- 1...Bb5
- 2.Qh5#
- 1...Sd2+!
- threat
- 1.Rxf6?
- threat
- 2.Sb2#
- 2.Sf2#
- 1...Sxd3
- 2.Bxb3#
- 1...exd3
- 2.Qf3#
- 1...Bb5
- 2.Qh5#
- 1...Sa4
- 2.Sf2#
- 2.Bxb3#
- 1...Sd2+!
- threat
- 1.Qh3?
- threat
- 2.Qg4#
- 1...Sd2+
- 2.Rxd2#
- 1...Bh5
- 2.Qxh5#
- 1...Sc1
- 2.Rd2#
- 1...Sd4
- 2.Sb2#
- 2.Rd2#
- 1...Bd7!
- threat
- 1.Qh4?
- threat
- 2.Qg4#
- 1...Sd2+
- 2.Rxd2#
- 1...Bxh4
- 2.Sb2#
- 1...Bh5
- 2.Qxh5#
- 1...Sc1
- 2.Rd2#
- 1...Sd4
- 2.Sb2#
- 2.Rd2#
- 1...Bd7!
- threat
- 1.Kg2?
- Keys
- 1.Ra2!
- threat
- 2.Sf2#
- 1...Sd2+
- 2.Rxd2#
- 1...Sxd3
- 2.Bxb3#
- 1...exd3
- 2.Qf3#
- 1...Bh4
- 2.Sb2#
- 1...Bb5
- 2.Qh5#
- threat
- 1.Ra2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 14
- Sets
- B(e);N_GUARD::S(E),XB(e)
- B(e);N_GUARD::S(E)
- B(f);N_GUARD::QAB(C)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
- B(f);N_GUARD::QAB(C),XB(f)
- S(b);N_GUARD::R1(D)
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- S(d);N_GUARD::B(G),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- Tries
- Try
- K(B);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::R1(D),XS(b)
- Refutation
- B(e);
- Try
- S(A);
- Threat
- QAR(C)+K(B)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- P(c);OGATE,XS(A)::QAB(C),XP(c)
- Refutation
- B(e);
- Try
- B(G);
- Threat
- B(G)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- B(f);N_GUARD::QAB(C),XB(f)
- B(f);N_GUARD::QAB(C)
- S(b);N_GUARD::R1(D)
- Refutation
- S(d);XB(G)
- Try
- R(D);
- Threat
- S(E)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
- Refutation
- B(e);
- Try
- R(D);
- Threat
- S(E)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- B(e);N_GUARD::S(E)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
- Refutation
- S(d);XS(E)
- Try
- R(D);
- Threat
- S(E)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- B(e);N_GUARD::S(E)
- Refutation
- P(c);XS(E)
- Try
- R(D);
- Threat
- S(E)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- B(e);N_GUARD::S(E)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
- Refutation
- P(c);XS(E)
- Try
- R(D);
- Threat
- S(E)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- B(e);N_GUARD::S(E)
- Refutation
- B(f);P_PINS(E)
- Try
- R(D);
- Threat
- S(E)
- Vars
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- B(e);N_GUARD::S(E)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
- Refutation
- S(b);CHECK
- Try
- R(D);
- Threat
- S(E)
- Vars
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- B(e);N_GUARD::S(E)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
- Refutation
- S(b);CHECK
- Try
- R(D);XB(e)
- Threat
- DUALS(2)
- Vars
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
- Refutation
- S(b);CHECK
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- B(f);N_GUARD::QAB(C),XB(f)
- S(b);N_GUARD::R1(D)
- Refutation
- B(f);
- Try
- Q(C);
- Threat
- QAB(C)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- B(e);N_GUARD,XQ(C)::S(E)
- B(f);N_GUARD::QAB(C),XB(f)
- S(b);N_GUARD::R1(D)
- Refutation
- B(f);
- Try
- Actual
- R(D);
- Threat
- S(E)
- Vars
- S(b);CHECK,N_GUARD::R1(D),XS(b)
- S(d);N_GUARD,XS(E)::B(G),XS(b)
- P(c);N_GUARD,XS(E)::QAB(C)
- B(e);N_GUARD::S(E)
- B(f);N_GUARD,P_PINS(E)::QAB(C)
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