MESON Chess Problem Database
Problem Display
PID: 48162 (n4R1K/bP1Nr2p/2p3p1/1N1k4/3pRBPr/p7/b3B2p/4Q3 w - - 0 1)
Degener, Udo
1st Prize, Litwin-Staszewski MT, 1988
#2
10 + 12
| 3297 | FIDE Album (1986-1988) | 1995 |
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Qh1#
- 1...Re5
- 2.Rxe5#
- 1...Rxd7
- 2.Re5#
- 1...Rf7
- 2.Re5#
- 1...Rg7
- 2.Re5#
- 1...Bc5
- 2.Sf6#
- 1...d3
- 2.Sc3#
- 1...cxb5
- 2.bxa8Q#
- 2.bxa8B#
- 1...c5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Kxe4
- Tries
- 1.Sc7+?
- 1...Kxe4
- 2.Qh1#
- 1...Sxc7!
- 1...Kxe4
- 1.Rxd4+?
- 1...Ke6
- 2.Bd1#
- 2.Bf1#
- 2.Bd3#
- 2.Bf3#
- 2.Bc4#
- 2.Rd6#
- 2.Rf6#
- 1...Bxd4+!
- 1...Ke6
- 1.Rxe7?
- threat
- 2.Re5#
- 2.Qh1#
- 1...Rxg4
- 2.Re5#
- 1...cxb5
- 2.Qh1#
- 2.bxa8Q#
- 2.bxa8B#
- 1...c5
- 2.Qh1#
- 2.bxa8Q#
- 2.bxa8B#
- 1...h1Q
- 2.Re5#
- 1...h1S
- 2.Re5#
- 1...h1B
- 2.Re5#
- 1...h1R
- 2.Re5#
- 1...Rh3
- 2.Re5#
- 1...Rh5
- 2.Qh1#
- 1...Bb1
- 2.Re5#
- 1...Bb8
- 2.Qh1#
- 1...d3!
- threat
- 1.Rf5+?
- 1...Kxe4
- 2.Sd6#
- 2.Sf6#
- 2.Qh1#
- 1...Re5
- 2.Rexe5#
- 2.Rfxe5#
- 1...gxf5!
- 1...Kxe4
- 1.Qd2?
- threat
- 2.Sc3#
- 1...Kxe4
- 2.Sf6#
- 1...Rxe4
- 2.Qxa2#
- 1...Rxd7
- 2.Re5#
- 1...cxb5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Re5
- 2.Rxe5#
- 1...c5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Rh3!
- threat
- 1.Qb4?
- threat
- 2.Sf6#
- 1...Kxe4
- 2.Sc3#
- 1...Rxe4
- 2.Qd6#
- 1...Rxd7
- 2.Re5#
- 1...cxb5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Re5
- 2.Rxe5#
- 1...c5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Rf7
- 2.Re5#
- 1...Re6!
- threat
- 1.Qh1?
- threat
- 2.Re5#
- 2.Rxe7#
- 1...Rxg4
- 2.Re5#
- 1...Rxd7
- 2.Re5#
- 1...cxb5
- 2.Rxe7#
- 2.bxa8Q#
- 2.bxa8B#
- 1...Re5
- 2.Rxe5#
- 1...Re6
- 2.Rxd4#
- 2.Re5#
- 1...Rh3
- 2.Re5#
- 1...Rf7
- 2.Re3#
- 2.Re5#
- 2.Re7#
- 2.Ree8#
- 1...Rg7
- 2.Re3#
- 2.Re5#
- 2.Re7#
- 2.Ree8#
- 1...Re8
- 2.Re5#
- 2.Re7#
- 2.Rexe8#
- 1...Bb1
- 2.Re5#
- 1...d3
- 2.Sc3#
- 1...Rxe4!
- threat
- 1.Sc7+?
- Keys
- 1.Qa5!
- threat
- 2.Sc3#
- 1...Kxe4
- 2.Sd6#
- 1...Rxe4
- 2.Sc7#
- 1...cxb5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Re5
- 2.Rxe5#
- 1...c5
- 2.bxa8Q#
- 2.bxa8B#
- 1...Bc5
- 2.Sf6#
- threat
- 1.Qa5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- K(f);OGATEB,S_FLIGHT,XR(C)::QAB(A)
- R(j);N_GUARD::R1(C),XR(j)
- R(j);N_GUARD,XS(H)::R1(C)
- R(j);N_GUARD::R1(C)
- B(i);SBLOCK::S(H)
- P(d);N_GUARD::S(F)
- P(g);XS(F)::PXS(l)=Q
- P(g);::PXS(l)=Q
- Tries
- Try
- S(F);CHECK
- Vars
- K(f);S_FLIGHT,XR(C)::QAB(A)
- Refutation
- S(l);XS(F)
- Try
- R(C);CHECK,XP(d)
- Refutation
- B(i);CHECK,XR(C)
- Try
- R(C);XR(j)
- Threat
- DUALS(2)
- Vars
- R(e);XP(E)::R1(C)
- P(b);::R1(C)
- R(e);::R1(C)
- R(e);::QAB(A)
- B(a);::R1(C)
- B(i);::QAB(A)
- Refutation
- P(d);
- Try
- R(I);CHECK
- Refutation
- P(h);XR(I)
- Try
- Q(A);P_PINP(d)
- Threat
- S(F)
- Vars
- K(f);N_SPINP(d),S_FLIGHT,XR(C)::S(H)
- R(j);SBLOCK,XR(C)::QAB(A),XB(a)
- R(j);N_GUARD,XS(H)::R1(C)
- P(g);XS(F)::PXS(l)=Q
- R(j);N_GUARD::R1(C),XR(j)
- P(g);::PXS(l)=Q
- Refutation
- R(e);
- Try
- Q(A);
- Threat
- S(H)
- Vars
- K(f);P_SPINP(d),S_FLIGHT,XR(C)::S(F)
- R(j);SBLOCK,XR(C)::QAR1(A)
- R(j);N_GUARD,XS(H)::R1(C)
- P(g);XS(F)::PXS(l)=Q
- R(j);N_GUARD::R1(C),XR(j)
- P(g);::PXS(l)=Q
- R(j);N_GUARD::R1(C)
- Refutation
- R(j);
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(e);XP(E)::QAB(A)+R(C),DCHECK
- R(j);XS(H)::QAB(A)+R(C),DCHECK
- R(j);::QAB(A)+R(C),DCHECK,XR(j)
- R(e);::QAB(A)+R(C),DCHECK
- B(a);::QAB(A)+R(C),DCHECK
- P(d);N_GUARD::S(F)
- Refutation
- R(j);P_SPINR(j),XR(C)
- Try
- Actual
- Q(A);
- Threat
- QAR(A)+S(F),DCHECK
- Vars
- K(f);S_FLIGHT,XR(C)::S(F)
- R(j);SBLOCK,XR(C)::QAR(A)+S(F),DCHECK
- P(g);P_SPINP(g),XS(F)::PXS(l)=Q
- R(j);N_GUARD::R1(C),XR(j)
- P(g);::PXS(l)=Q
- B(i);SBLOCK::S(H)
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