MESON Chess Problem Database
Problem Display
PID: 251835 (1Q6/K1Pp4/2p5/N1nk1P2/1P6/4P1B1/2B5/3r4 w - - 0 1)
Wirtanen, Erkki Aukusti
Schakend Nederland, 1968
#2
9 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Qg8#
- 1...Sa4
- 2.Qg8#
- 1...Se4
- 2.Bb3#
- 2.Qg8#
- 1...Sa6
- 2.Qg8#
- 1...Sb7
- 2.Qg8#
- 1...Sb3
- Tries
- 1.Be4+?
- 1...Sxe4
- 2.Qg8#
- 1...Kxe4!
- 1...Sxe4
- 1.Qb5?
- threat
- 2.Qc4#
- 2.Qxc5#
- 1...Rd3
- 2.Qc4#
- 1...Rd4
- 2.Qxc5#
- 1...d6
- 2.Qc4#
- 2.Qxc6#
- 1...cxb5!
- threat
- 1.Qb6?
- threat
- 2.Qxc5#
- 1...Sd3
- 2.Qd4#
- 1...Sb3
- 2.e4#
- 1...Sa4
- 2.e4#
- 1...Se4
- 2.Bb3#
- 1...Sa6
- 2.e4#
- 1...Se6
- 2.e4#
- 1...Sb7
- 2.e4#
- 1...d6
- 2.Qxc6#
- 1...Rd3!
- threat
- 1.Qh8?
- threat
- 2.Qe5#
- 1...Sd3
- 2.Qd4#
- 1...d6!
- threat
- 1.c8Q?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Rd3
- 2.Qe5#
- 1...d6
- 2.Qxd6#
- 2.Qxc6#
- 1...Se4
- 2.Bb3#
- 2.Qe5#
- 2.Qg8#
- 1...Sb7
- 2.Qe5#
- 2.Qg8#
- 1...Sd3!
- threat
- 1.c8S?
- threat
- 2.Sb6#
- 2.Se7#
- 2.Qe5#
- 2.Qd6#
- 1...Rd3
- 2.Qe5#
- 1...d6
- 2.Sb6#
- 2.Se7#
- 2.Qxd6#
- 1...Sa4
- 2.Se7#
- 2.Qe5#
- 2.Qd6#
- 1...Se4
- 2.Sb6#
- 2.Se7#
- 2.Bb3#
- 2.Qe5#
- 1...Sb7
- 2.Sb6#
- 2.Se7#
- 2.Qe5#
- 1...Sd3!
- threat
- 1.c8B?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Rd3
- 2.Qe5#
- 1...d6
- 2.Qxd6#
- 1...Se4
- 2.Bb3#
- 2.Qe5#
- 1...Sb7
- 2.Qe5#
- 1...Sd3!
- threat
- 1.c8R?
- threat
- 2.Qe5#
- 2.Qd6#
- 1...Rd3
- 2.Qe5#
- 1...d6
- 2.Qxd6#
- 1...Se4
- 2.Bb3#
- 2.Qe5#
- 1...Sb7
- 2.Qe5#
- 1...Sd3!
- threat
- 1.Be4+?
- Keys
- 1.Qe8!
- threat
- 2.Qe5#
- 1...Sd3
- 2.Bb3#
- 1...Se6
- 2.Qxd7#
- 1...d6
- 2.Qxc6#
- threat
- 1.Qe8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- S(b);N_GUARD::QAB(I)
- Tries
- Try
- B(A);CHECK
- Vars
- S(b);SBLOCK,XB(A)::QAB(I)
- Refutation
- K(c);S_FLIGHT,XB(A)
- Try
- Q(I);P_PINS(b)
- Threat
- DUALS(2)
- Vars
- R(a);::QAB1(I)
- R(a);::QAR1(I),XS(b)
- Refutation
- P(d);N_SPINS(b),XQ(I)
- Try
- Q(I);
- Threat
- QAR1(I),XS(b)
- Vars
- S(b);OGATE::QAR1(I)
- S(b);N_GUARD::P(B)
- S(b);N_GUARD,SBLOCK::B(A)
- P(e);N_GUARD::QAB1(I),XP(d)
- Refutation
- R(a);
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- S(b);S_CUTR(a)::QAR1(I)
- Refutation
- P(e);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(I)
- Refutation
- S(b);
- Try
- P(H);
- Threat
- DUALS(4)
- Vars
- R(a);::QAR1(I)
- Refutation
- S(b);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(I)
- P(e);::QAR1(I),XP(e)
- S(b);::QAR1(I)
- Refutation
- S(b);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(I)
- P(e);::QAR1(I),XP(e)
- S(b);::QAR1(I)
- Refutation
- S(b);
- Try
- Actual
- Q(I);
- Threat
- QAR1(I)
- Vars
- S(b);N_GUARD::B(A)
- S(b);N_GUARD::QAR2(I),XP(e)
- P(e);OGATE::QAB1(I),XP(d)
Developed and maintained by Brian Stephenson.
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