MESON Chess Problem Database
Problem Display
PID: 260792 (1B2r2b/K1P4b/BQ4n1/p2k2r1/6nq/3N1P2/4PpN1/1R6 w - - 0 1)
Johner, Hans
Neue Zurcher Zeitung, 1930
#2
10 + 10
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.Qc5#
- 1...Rxb8
- 2.e4#
- 1...Rc8
- 2.e4#
- 1...Rd8
- 2.e4#
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rf8
- 2.e4#
- 1...Rg8
- 2.e4#
- 1...Be5
- 2.e4#
- 1...S4e5
- 2.Se3#
- 1...Sf4
- 2.Sgxf4#
- 1...S6e5
- 2.Sgf4#
- 2.Sdf4#
- 1...Se7
- 2.Sgf4#
- 1...Sf8
- 2.Sgf4#
- 1...Re6
- Tries
- 1.Sb4+?
- 1...Ke5
- 2.c8Q#
- 2.c8B#
- 1...axb4!
- 1...Ke5
- 1.Sdf4+?
- 1...Ke5
- 2.Rb5#
- 2.c8Q#
- 2.c8B#
- 1...Sxf4!
- 1...Ke5
- 1.Rc1?
- threat
- 2.Bc4#
- 2.Bb7#
- 1...Rxb8
- 2.Bc4#
- 2.e4#
- 1...Re4
- 2.Bb7#
- 1...Re6
- 2.Bc4#
- 2.Qc5#
- 1...Sh2
- 2.Bb7#
- 1...Se3
- 2.Bb7#
- 1...S4e5
- 2.Se3#
- 1...Sf6
- 2.Bb7#
- 1...Sh6
- 2.Bb7#
- 1...S6e5
- 2.Sgf4#
- 2.Sdf4#
- 1...Se7
- 2.Sgf4#
- 2.Bc4#
- 1...Bc3!
- threat
- 1.Rb4?
- threat
- 2.Bc4#
- 2.Bb7#
- 1...Rxb8
- 2.Bc4#
- 2.e4#
- 1...Re4
- 2.Bb7#
- 2.fxe4#
- 1...Re6
- 2.Bc4#
- 2.Qc5#
- 1...Sh2
- 2.Bb7#
- 1...Se3
- 2.Bb7#
- 1...S4e5
- 2.Se3#
- 1...Sf6
- 2.Bb7#
- 1...Sh6
- 2.Bb7#
- 1...S6e5
- 2.Sgf4#
- 2.Sdf4#
- 2.Rd4#
- 1...Se7
- 2.Sgf4#
- 2.Bc4#
- 1...axb4!
- threat
- 1.Qc6+?
- 1...Kd4
- 2.Qc4#
- 1...Kxc6!
- 1...Kd4
- 1.c8Q?
- threat
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qd7#
- 2.Qd6#
- 2.Qc4#
- 2.Qcc5#
- 2.Qcc6#
- 1...Rxc8
- 2.Qd6#
- 2.e4#
- 1...Qg3
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qc4#
- 2.Qcc5#
- 2.Qcc6#
- 1...Qh2
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qc4#
- 2.Qcc5#
- 2.Qcc6#
- 1...Re4
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qbd8#
- 2.Qcb7#
- 2.Qd7#
- 2.Qd6#
- 2.Qcc5#
- 2.Qcc6#
- 2.Qcd8#
- 1...Re6
- 2.Bc4#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcxe6#
- 2.Qc4#
- 2.Qcc5#
- 1...Rd8
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qbxd8#
- 2.Qce6#
- 2.Qcb7#
- 2.Qc4#
- 2.Qcc5#
- 2.Qcc6#
- 2.Qcxd8#
- 2.e4#
- 1...Bb2
- 2.Bc4#
- 2.Bb7#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qd7#
- 2.Qd6#
- 2.Qc4#
- 2.Qcc5#
- 2.Qcc6#
- 1...Bd4
- 2.Bc4#
- 2.Bb7#
- 2.Qb7#
- 2.Qd7#
- 2.Qc4#
- 2.Qc6#
- 1...Be5
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qc4#
- 2.Qcc5#
- 2.Qcc6#
- 2.e4#
- 1...Sh2
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qd7#
- 2.Qd6#
- 2.Qcc5#
- 2.Qcc6#
- 1...Se3
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qd7#
- 2.Qd6#
- 2.Qcc5#
- 2.Qcc6#
- 1...S4e5
- 2.Se3#
- 2.Rb5#
- 2.Qbc5#
- 2.Qd6#
- 2.Qcc5#
- 1...Sf6
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qd6#
- 2.Qcc5#
- 2.Qcc6#
- 1...Sh6
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qd7#
- 2.Qd6#
- 2.Qcc5#
- 2.Qcc6#
- 1...S6e5
- 2.Sgf4#
- 2.Sdf4#
- 2.Rb5#
- 2.Qbc5#
- 2.Qd6#
- 2.Qcc5#
- 1...Se7
- 2.Sgf4#
- 2.Sdf4#
- 2.Bc4#
- 2.Rb5#
- 2.Qbc5#
- 2.Qce6#
- 2.Qd7#
- 2.Qd6#
- 2.Qc4#
- 2.Qcc5#
- 1...Sf8
- 2.Sgf4#
- 2.Sdf4#
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Qbc5#
- 2.Qcb7#
- 2.Qd6#
- 2.Qc4#
- 2.Qcc5#
- 2.Qcc6#
- 1...Re7+!
- threat
- 1.c8B?
- threat
- 2.Bcb7#
- 2.Qc5#
- 2.Qd6#
- 1...Rxc8
- 2.Qd6#
- 2.e4#
- 1...Qg3
- 2.Bcb7#
- 2.Qc5#
- 1...Qh2
- 2.Bcb7#
- 2.Qc5#
- 1...Re6
- 2.Bxe6#
- 2.Qc5#
- 1...Rd8
- 2.Be6#
- 2.Bcb7#
- 2.Qc5#
- 2.e4#
- 1...Bd4
- 2.Bcb7#
- 1...Be5
- 2.Bcb7#
- 2.Qc5#
- 2.e4#
- 1...S4e5
- 2.Se3#
- 2.Qc5#
- 2.Qd6#
- 1...S6e5
- 2.Sgf4#
- 2.Sdf4#
- 2.Qc5#
- 2.Qd6#
- 1...Se7
- 2.Sgf4#
- 2.Sdf4#
- 2.Be6#
- 2.Qc5#
- 2.Qd6#
- 1...Re7+!
- threat
- 1.c8R?
- threat
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Qd6#
- 1...Rxc8
- 2.Qd6#
- 2.e4#
- 1...Qg3
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 1...Qh2
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 1...Re4
- 2.Bb7#
- 2.Rb5#
- 2.Rd8#
- 2.Qd6#
- 1...Re6
- 2.Bc4#
- 2.Rb5#
- 2.Qc5#
- 1...Rd8
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.Rxd8#
- 2.e4#
- 1...Bb2
- 2.Bc4#
- 2.Bb7#
- 2.Qd6#
- 1...Bd4
- 2.Bc4#
- 2.Bb7#
- 1...Be5
- 2.Bc4#
- 2.Bb7#
- 2.Rb5#
- 2.e4#
- 1...Sh2
- 2.Bb7#
- 2.Rb5#
- 2.Qd6#
- 1...Se3
- 2.Bb7#
- 2.Rb5#
- 2.Qd6#
- 1...S4e5
- 2.Se3#
- 2.Rb5#
- 2.Qd6#
- 1...Sf6
- 2.Bb7#
- 2.Rb5#
- 2.Qd6#
- 1...Sh6
- 2.Bb7#
- 2.Rb5#
- 2.Qd6#
- 1...S6e5
- 2.Sgf4#
- 2.Sdf4#
- 2.Rb5#
- 2.Qd6#
- 1...Se7
- 2.Sgf4#
- 2.Sdf4#
- 2.Bc4#
- 2.Rb5#
- 2.Qd6#
- 1...Re7+!
- threat
- 1.Sb4+?
- Keys
- 1.Se5!
- threat
- 2.Rb5#
- 1...Kxe5
- 2.Rb5#
- 1...Rgxe5
- 2.Rd1#
- 1...Rexe5
- 2.Rd1#
- 1...Bxe5
- 2.e4#
- 1...S4xe5
- 2.Se3#
- 1...S6xe5
- 2.Sf4#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(i);SBLOCK::QAR1(G)
- R(i);N_GUARD,XB(J)::P(B)
- R(i);N_GUARD::P(B)
- B(j);S_CUTR(i)::P(B)
- S(b);N_GUARD,S_CUTR(i)::S(C)
- S(g);N_GUARD::S(C),XS(g)
- S(g);N_GUARD::S(C)
- Tries
- Try
- S(D);CHECK
- Vars
- K(e);P-FLIGHT,S_CUTP(d)::P=Q
- Refutation
- P(d);XS(D)
- Try
- S(D);CHECK
- Refutation
- S(g);XS(D)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- R(i);::B(F)
- S(b);::B(F)
- S(b);N_GUARD,S_CUTR(i)::S(C)
- Refutation
- B(j);
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- S(b);::B(F)
- S(b);N_GUARD,S_CUTR(i)::S(C)
- Refutation
- P(d);XR(A)
- Try
- Q(G);CHECK
- Vars
- K(e);N_GUARD,P-FLIGHT::QAR1(G)
- Refutation
- K(e);S_FLIGHT,XQ(G)
- Try
- P(I);
- Threat
- DUALS(10)
- Refutation
- R(i);CHECK
- Try
- P(I);
- Threat
- DUALS(3)
- Vars
- B(j);P_PINQ(G)::B(I)
- Refutation
- R(i);CHECK
- Try
- P(I);
- Threat
- DUALS(4)
- Refutation
- R(i);CHECK
- Try
- Actual
- S(D);
- Threat
- R(A)
- Vars
- K(e);P-FLIGHT,XS(D)::R(A)
- R(f);SBLOCK,XS(D)::R(A)
- R(i);SBLOCK,XS(D)::R(A)
- B(j);SBLOCK,XS(D)::P(B)
- S(b);N_GUARD,SBLOCK,XS(D)::S(C)
- S(g);N_GUARD,SBLOCK,XS(D)::S(C)
Developed and maintained by Brian Stephenson.
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