MESON Chess Problem Database
Problem Display
PID: 9914 (bbB2rr1/7N/8/3R1p2/1PNBkpP1/2K1P3/8/5Q2 w - - 0 1)
Ahues, Herbert Siegfried Oskar
2nd Prize, Schach-Echo, 1960
#2
10 + 7
| 6479 | Problemschach (Sidler) | 1968 |
| 5862 | An ABC of Chess Problems | 1970 |
| 4640 | Chess Wizardry: The New ABC of Chess Problems | 1996 |
| 23 | Die Schwalbe | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Kxd5
- 2.Qf3#
- 1...Rf6
- 2.Sxf6#
- 1...Rxc8
- 2.Sf6#
- 1...Rd8
- 2.Sf6#
- 1...Re8
- 2.Sf6#
- 1...Bxd5
- 2.Sd2#
- 1...Be5
- 2.Rxe5#
- 1...Ba7
- 2.Re5#
- 1...Kxd5
- Tries
- 1.Sg5+?
- 1...Kxd5
- 2.Qf3#
- 1...Rxg5!
- 1...Kxd5
- 1.Bc5?
- threat
- 2.Rd4#
- 1...Be5+
- 2.Rxe5#
- 1...Kxd5
- 2.Qf3#
- 1...Rd8
- 2.Sf6#
- 1...Bxd5!
- threat
- 1.Be5?
- threat
- 2.Rd4#
- 1...Bxe5+
- 2.Rxe5#
- 1...Kxd5
- 2.Qf3#
- 1...Bxd5
- 2.Qxf4#
- 1...Rd8
- 2.Sf6#
- 1...Ba7!
- threat
- 1.Bb6?
- threat
- 2.Rd4#
- 1...Be5+
- 2.Rxe5#
- 1...Kxd5
- 2.Qf3#
- 1...Rd8
- 2.Sf6#
- 1...Bxd5!
- threat
- 1.Bf6?
- threat
- 2.Rd4#
- 1...Be5+
- 2.Rxe5#
- 1...Kxd5
- 2.Qf3#
- 1...Bxd5
- 2.Bxf5#
- 1...Ba7
- 2.Re5#
- 1...Rd8!
- threat
- 1.Ba7?
- threat
- 2.Rd4#
- 1...Be5+
- 2.Rxe5#
- 1...Kxd5
- 2.Qf3#
- 1...Bxa7
- 2.Re5#
- 1...Rd8
- 2.Sf6#
- 1...Bxd5!
- threat
- 1.Bh8?
- threat
- 2.Rd4#
- 1...Be5+
- 2.Rxe5#
- 1...Kxd5
- 2.Qf3#
- 1...Rd8
- 2.Sf6#
- 1...Ba7
- 2.Re5#
- 1...Bxd5!
- threat
- 1.Bxf5+?
- 1...Kxd5
- 2.Qf3#
- 1...Rxf5!
- 1...Kxd5
- 1.Be6?
- threat
- 2.Sd2#
- 1...Rc8
- 2.Sf6#
- 1...fxe3!
- threat
- 1.Bb7?
- threat
- 2.Sd2#
- 2.Re5#
- 1...fxe3
- 2.Re5#
- 1...Rc8
- 2.Sf6#
- 2.Re5#
- 1...Be5
- 2.Sd2#
- 2.Rxe5#
- 1...Bxb7!
- threat
- 1.Ra5?
- threat
- 2.Sd2#
- 1...Rxc8
- 2.Sf6#
- 1...fxe3!
- threat
- 1.Rb5?
- threat
- 2.Sd2#
- 1...Rxc8
- 2.Sf6#
- 1...fxe3!
- threat
- 1.Rxf5?
- threat
- 2.Sd2#
- 1...Rxc8
- 2.Sf6#
- 1...fxe3
- 2.Qg2#
- 2.Qd3#
- 2.Qb1#
- 2.Qh1#
- 2.Qf3#
- 1...Be5
- 2.Rxe5#
- 1...Rxf5!
- threat
- 1.Qxf4+?
- 1...Kxd5
- 2.Qf3#
- 1...Bxf4!
- 1...Kxd5
- 1.Sg5+?
- Keys
- 1.Bg7!
- threat
- 2.Rd4#
- 1...Be5+
- 2.Rxe5#
- 1...Kxd5
- 2.Qf3#
- 1...Bxd5
- 2.Sg5#
- 1...Rd8
- 2.Sf6#
- 1...Ba7
- 2.Re5#
- threat
- 1.Bg7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 3
- Sets
- K(a);S_FLIGHT,XR(H)::QAB(A)
- R(f);N_GUARD::S(I),XR(f)
- R(f);N_GUARD,P_PINS(E),XB(J)::S(I)
- R(f);N_GUARD::S(I)
- B(d);SBLOCK,XR(H)::S(E)
- B(e);N_GUARD,P_PINB(F)::R1(H),XB(e)
- B(e);N_GUARD::R1(H)
- Tries
- Try
- S(I);CHECK
- Vars
- K(a);S_FLIGHT,XR(H)::QAB(A)
- Refutation
- R(g);XS(I)
- Try
- B(F);
- Threat
- R1(H)
- Vars
- B(e);CHECK,N_GUARD::R1(H),XB(e)
- K(a);S_FLIGHT,XR(H)::QAB(A)
- R(f);N_GUARD::S(I)
- Refutation
- B(d);XR(H)
- Try
- B(F);
- Threat
- R1(H)
- Vars
- B(e);CHECK,OGATE,XB(F)::R1(H),XB(e)
- K(a);S_FLIGHT,XR(H)::QAB(A)
- B(d);SBLOCK,XR(H)::QAR1(A),XP(b)
- R(f);N_GUARD::S(I)
- Refutation
- B(e);
- Try
- B(F);
- Threat
- R1(H)
- Vars
- B(e);CHECK,N_GUARD::R1(H),XB(e)
- K(a);S_FLIGHT,XR(H)::QAB(A)
- R(f);N_GUARD::S(I)
- Refutation
- B(d);XR(H)
- Try
- B(F);
- Threat
- R1(H)
- Vars
- B(e);CHECK,N_GUARD::R1(H),XB(e)
- K(a);S_FLIGHT,XR(H)::QAB(A)
- B(d);SBLOCK,XR(H)::B(J),XP(c)
- B(e);N_GUARD::R1(H)
- Refutation
- R(f);
- Try
- B(F);
- Threat
- R1(H)
- Vars
- B(e);CHECK,N_GUARD::R1(H),XB(e)
- K(a);S_FLIGHT,XR(H)::QAB(A)
- B(e);N_GUARD,XB(F)::R1(H)
- R(f);N_GUARD::S(I)
- Refutation
- B(d);XR(H)
- Try
- B(F);
- Threat
- R1(H)
- Vars
- B(e);CHECK,N_GUARD::R1(H),XB(e)
- K(a);S_FLIGHT,XR(H)::QAB(A)
- R(f);N_GUARD::S(I)
- B(e);N_GUARD::R1(H)
- Refutation
- B(d);XR(H)
- Try
- B(J);CHECK,XP(c)
- Vars
- K(a);S_FLIGHT,XR(H)::QAB(A)
- Refutation
- R(f);XB(J)
- Try
- B(J);
- Threat
- S(E)
- Vars
- R(f);N_GUARD,P_PINS(E)::S(I)
- Refutation
- P(b);XP(C)
- Try
- B(J);
- Threat
- DUALS(2)
- Vars
- P(b);XP(C)::B(J)+R(H),DCHECK
- Refutation
- B(d);XB(J)
- Try
- R(H);
- Threat
- S(E)
- Vars
- R(f);N_GUARD,P_PINS(E),XB(J)::S(I)
- Refutation
- P(b);XP(C)
- Try
- R(H);
- Threat
- S(E)
- Vars
- R(f);N_GUARD,P_PINS(E),XB(J)::S(I)
- Refutation
- P(b);XP(C)
- Try
- R(H);XP(c)
- Threat
- S(E)
- Vars
- R(f);N_GUARD,P_PINS(E),XB(J)::S(I)
- B(e);N_GUARD,P_PINB(F)::R1(H),XB(e)
- Refutation
- R(f);XR(H)
- Try
- Q(A);CHECK,XP(b)
- Vars
- K(a);S_FLIGHT,XR(H)::QAB(A)
- Refutation
- B(e);XQ(A)
- Try
- Actual
- B(F);
- Threat
- R1(H)
- Vars
- B(e);CHECK,N_GUARD::R1(H),XB(e)
- K(a);S_FLIGHT,XR(H)::QAB(A)
- B(d);SBLOCK,XR(H)::S(I)
- R(f);N_GUARD::S(I)
- B(e);N_GUARD::R1(H)
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