MESON Chess Problem Database
Problem Display
PID: 153745 (2B3K1/bp2p1P1/b3R3/3N1kp1/R1n3p1/qp1Np3/1P4r1/3Q4 w - - 0 1)
Ahues, Herbert Siegfried Oskar
American Chess Bulletin, 1949
#2
9 + 12
| 15148 | Sadier Collection | 2015 |
SOLUTION
- SOUND
- Sets
- 1...Qxb2
- 2.Sxe7#
- 1...Qa1
- 2.Sxe7#
- 1...Qa2
- 2.Sxe7#
- 1...Qxa4
- 2.Sxe7#
- 1...Sxb2
- 2.Rf6#
- 1...Sd2
- 2.Rf6#
- 1...Sa5
- 2.Rf6#
- 1...Se5
- 2.Rf6#
- 1...Sb6
- 2.Sxe3#
- 2.Rf6#
- 1...Sd6
- 2.Sxe7#
- 2.Rf6#
- 1...g3
- 2.Qf3#
- 1...Qxb2
- Tries
- 1.Kf7?
- threat
- 2.Re5#
- 2.Rxe7#
- 1...Se5+
- 2.Rxe5#
- 1...Qxa4
- 2.Sxe7#
- 2.Re5#
- 1...Qc5
- 2.Re5#
- 1...Qd6
- 2.Re5#
- 1...Bb5
- 2.Re5#
- 1...Sb6
- 2.Sxe3#
- 2.Re5#
- 2.Rf6#
- 1...b5
- 2.Re5#
- 1...b6
- 2.Re5#
- 1...Sd6+!
- threat
- 1.Kh7?
- threat
- 2.Re5#
- 2.Rxe7#
- 1...Qxa4
- 2.Sxe7#
- 2.Re5#
- 1...Qc5
- 2.Re5#
- 1...Qd6
- 2.Re5#
- 1...Bb5
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 2.Rf6#
- 1...Sb6
- 2.Sxe3#
- 2.Re5#
- 2.Rf6#
- 1...Sd6
- 2.Sxe7#
- 2.Re5#
- 2.Rf6#
- 1...b5
- 2.Re5#
- 1...b6
- 2.Re5#
- 1...Rh2+!
- threat
- 1.S3f4?
- threat
- 2.Rxe7#
- 2.Qd3#
- 1...Qxa4
- 2.Qd3#
- 1...Sxb2
- 2.Rxe7#
- 1...Rd2
- 2.Rxe7#
- 1...Qc5
- 2.Qd3#
- 1...Qd6
- 2.Qd3#
- 1...Bb5
- 2.Qd3#
- 1...Sd2
- 2.Rxe7#
- 1...Sa5
- 2.Rxe7#
- 1...Se5
- 2.Rf6#
- 1...Sb6
- 2.Sxe3#
- 1...Sd6
- 2.Sxe7#
- 1...g3
- 2.Rxe7#
- 1...b5
- 2.Qd3#
- 1...b6
- 2.Qd3#
- 1...gxf4!
- threat
- 1.Sc5?
- threat
- 2.Qd3#
- 1...Sxb2
- 2.Sxe3#
- 2.Sxe7#
- 1...Sd2
- 2.Sxe3#
- 2.Sxe7#
- 1...Sa5
- 2.Sxe3#
- 2.Sxe7#
- 1...Se5
- 2.Sxe3#
- 2.Sxe7#
- 2.Rf6#
- 1...Sb6
- 2.Sxe3#
- 2.Sxe7#
- 1...Sd6
- 2.Sxe3#
- 2.Sxe7#
- 1...g3
- 2.Qf3#
- 1...Rd2!
- threat
- 1.Rd6+?
- 1...Ke4
- 2.Sc3#
- 1...e6!
- 1...Ke4
- 1.Qh1?
- threat
- 2.Qh7#
- 1...Rh2
- 2.Rf6#
- 2.Qe4#
- 1...Se5
- 2.Rf6#
- 1...g3!
- threat
- 1.Kf7?
- Keys
- 1.Se5!
- threat
- 2.Qd3#
- 1...Ke4
- 2.Qd3#
- 1...Sxb2
- 2.Rxe7#
- 1...Sxe5
- 2.Rf6#
- 1...Rd2
- 2.Qxg4#
- 1...Sd2
- 2.Rxe7#
- 1...Sa5
- 2.Rxe7#
- 1...Sb6
- 2.Sxe3#
- 1...Sd6
- 2.Sxe7#
- threat
- 1.Se5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(b);N_GUARD,XP(B)::S(E),XP(l)
- Q(b);N_GUARD::S(E),XP(l)
- Q(b);N_GUARD,XR(D)::S(E),XP(l)
- S(e);XP(B)::B(H)+R(F),DCHECK
- S(e);::B(H)+R(F),DCHECK
- P(f);N_GUARD::QAR2(A)
- Tries
- Try
- K(I);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- S(e);CHECK::B(H)+R(F),DCHECK,XS(e)
- Q(b);::B(H)+R(F),DCHECK
- B(i);::B(H)+R(F),DCHECK
- P(k);::B(H)+R(F),DCHECK
- Refutation
- S(e);CHECK
- Try
- K(I);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(b);::B(H)+R(F),DCHECK
- B(i);::B(H)+R(F),DCHECK
- P(k);::B(H)+R(F),DCHECK
- Refutation
- R(a);CHECK
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- Q(b);XR(D)::QAB(A)
- S(e);XP(B)::B(H)+R(F),XP(l)
- R(a);::B(H)+R(F),XP(l)
- Q(b);::QAB(A)
- B(i);::QAB(A)
- S(e);::B(H)+R(F),XP(l)
- S(e);SBLOCK::B(H)+R(F),DCHECK
- S(e);N_GUARD,S_CUTB(j)::S(E),XP(d)
- S(e);S_CUTQ(b)::S(E),XP(l)
- P(f);::B(H)+R(F),XP(l)
- P(k);::QAB(A)
- Refutation
- P(h);XS(C)
- Try
- S(C);
- Threat
- QAB(A)
- Vars
- P(f);N_GUARD::QAR2(A)
- Refutation
- R(a);
- Try
- R(F);CHECK
- Vars
- K(g);P_SPINS(e),S_FLIGHT::S(E)
- Refutation
- P(l);P_SPINP(l)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(e);::B(H)+R(F),DCHECK
- Refutation
- P(f);
- Try
- Actual
- S(C);
- Threat
- QAB(A)
- Vars
- K(g);P_SPINS(e),S_FLIGHT::QAB1(A)
- S(e);XP(B)::B(H)+R(F),XP(l)
- S(e);SBLOCK,XS(C)::B(H)+R(F),DCHECK
- R(a);N_GUARD::QAB1(A),XP(f)
- S(e);::B(H)+R(F),XP(l)
- S(e);N_GUARD,S_CUTB(j)::S(E),XP(d)
- S(e);S_CUTQ(b)::S(E),XP(l)
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