MESON Chess Problem Database
Problem Display
PID: 261199 (n7/1K1B2P1/3B4/3k3r/1P3Q1p/N5r1/4P1bn/8 w - - 0 1)
Ahlheim, Karl-Heinz
Neue Zurcher Zeitung, 1978
#2
8 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxa3
- 2.g8Q#
- 2.g8B#
- 1...Rb3
- 2.g8Q#
- 2.g8B#
- 1...Rc3
- 2.g8Q#
- 2.g8B#
- 1...Rd3
- 2.g8Q#
- 2.g8B#
- 1...Rf3
- 2.g8Q#
- 2.g8B#
- 1...Rh3
- 2.g8Q#
- 2.g8B#
- 1...Re5
- 2.Qxe5#
- 1...Rh6
- 2.Qe5#
- 1...Rh7
- 2.Qe5#
- 1...Rh8
- 2.Qe5#
- 1...Sg4
- 2.g8Q#
- 2.g8B#
- 1...Rxa3
- Tries
- 1.Sc2?
- threat
- 2.Qd4#
- 1...Rd3
- 2.g8Q#
- 2.g8B#
- 1...Rg4
- 2.Se3#
- 1...Sf3
- 2.Se3#
- 1...Be4!
- threat
- 1.Bc5?
- threat
- 2.Qd4#
- 1...Rd3
- 2.g8Q#
- 2.g8B#
- 1...Be4
- 2.Qd6#
- 1...Sf3
- 2.e4#
- 1...Rg4!
- threat
- 1.Qd2+?
- 1...Rd3
- 2.Qxd3#
- 1...Ke4!
- 1...Rd3
- 1.Sc2?
- Keys
- 1.Sb5!
- threat
- 2.Qd4#
- 1...Be4
- 2.Qf7#
- 1...Rd3
- 2.g8Q#
- 2.g8B#
- 1...Rg4
- 2.Sc3#
- 1...Sf3
- 2.Sc3#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- R(c);N_GUARD,XS(B)::P=Q
- R(c);N_GUARD,P_PINP(C)::P=Q
- R(c);N_GUARD::P=Q
- R(f);N_GUARD::QAR1(D),XR(f)
- R(f);N_GUARD::QAR1(D)
- S(b);S_CUTR(c)::P=Q
- Tries
- Try
- S(B);
- Threat
- QAR1(D)
- Vars
- R(c);N_GUARD::P=Q
- R(c);N_GUARD::S(B)
- S(b);S_CUTR(c)::S(B)
- Refutation
- B(a);
- Try
- B(E);
- Threat
- QAR1(D)
- Vars
- R(c);N_GUARD::P=Q
- B(a);SBLOCK::QAR1(D)
- S(b);S_CUTB(a)::P(A)
- Refutation
- R(c);
- Try
- Q(D);CHECK
- Vars
- R(c);N_GUARD,P_SPINR(c)::QAR2(D),XR(c)
- Refutation
- K(e);S_FLIGHT
- Try
- Actual
- S(B);
- Threat
- QAR1(D)
- Vars
- B(a);SBLOCK::QAB(D)
- R(c);N_GUARD::P=Q
- R(c);N_GUARD::S(B)
- S(b);S_CUTR(c)::S(B)
Developed and maintained by Brian Stephenson.
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