MESON Chess Problem Database
Problem Display
PID: 260996 (2R5/1n6/3p4/r7/2PkpB1p/4R2K/2b1BN2/6Q1 w - - 0 1)
Ahues, Herbert Siegfried Oskar
Neue Zurcher Zeitung, 1974
#2
8 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Qxa1#
- 2.Qg7#
- 1...Ra2
- 2.Qg7#
- 1...Ra3
- 2.Qg7#
- 1...Ra4
- 2.Qg7#
- 1...Rc5
- 2.Qa1#
- 1...Rd5
- 2.Qa1#
- 1...Re5
- 2.Qa1#
- 1...Rf5
- 2.Qa1#
- 1...Rg5
- 2.Qa1#
- 1...Rh5
- 2.Qa1#
- 1...Ra6
- 2.Qg7#
- 1...Ra7
- 2.Qg7#
- 1...Ra8
- 2.Qg7#
- 1...Bd1
- 2.Qxd1#
- 1...Ba4
- 2.Qa1#
- 1...Sc5
- 2.Qg7#
- 1...d5
- 2.Qg7#
- 1...Ra1
- Tries
- 1.Sd1?
- threat
- 2.Rd3#
- 1...Bd3
- 2.Rxd3#
- 1...Sc5
- 2.Qg7#
- 1...Rc5!
- threat
- 1.Sg4?
- threat
- 2.Rd3#
- 1...Bd3
- 2.Rxd3#
- 1...Rc5
- 2.Qa1#
- 1...Sc5!
- threat
- 1.Rxe4+?
- 1...Bxe4
- 2.Sd1#
- 1...Kc3!
- 1...Bxe4
- 1.Sd1?
- Keys
- 1.Sh1!
- threat
- 2.Rd3#
- 1...Bd3
- 2.Rxd3#
- 1...Rc5
- 2.Qa1#
- 1...Sc5
- 2.Qg7#
- threat
- 1.Sh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- R(e);N_GUARD::QAB(A)
- R(e);N_GUARD,P_PINR(D)::QAB(A)
- B(a);N_GUARD::QAR(A),XB(a)
- B(a);S_CUTR(e)::QAB(A)
- S(g);S_CUTR(e)::QAB(A)
- P(f);S_CUTR(e)::QAB(A)
- Tries
- Try
- S(C);
- Threat
- QAB(A)+R(D),DCHECK
- Vars
- B(a);::QAB(A)+R(D),DCHECK,XB(a)
- S(g);S_CUTR(e)::QAB(A)
- Refutation
- R(e);
- Try
- S(C);
- Threat
- QAB(A)+R(D),DCHECK
- Vars
- B(a);::QAB(A)+R(D),DCHECK,XB(a)
- R(e);N_GUARD::QAB(A)
- Refutation
- S(g);
- Try
- R(D);CHECK,XP(c)
- Vars
- B(a);SBLOCK,XR(D)::QAB(A)+S(C)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- S(C);
- Threat
- QAB(A)+R(D),DCHECK
- Vars
- B(a);::QAB(A)+R(D),DCHECK,XB(a)
- R(e);N_GUARD::QAB(A)
- S(g);S_CUTR(e)::QAB(A)
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