MESON Chess Problem Database
Problem Display
PID: 62528 (8/4p3/2p3K1/2Qn1N1R/4pkp1/4R3/1BB2p2/b5n1 w - - 0 1)
Degener, Udo
1st HM., Freie Presse, 1980
#2
7 + 9
| 3752 | FIDE Album (1980-1982) | 1988 |
SOLUTION
- SOUND
- Sets
- 1...Sf3
- 2.Rxe4#
- 1...Sxe3
- 2.Qxe3#
- 1...Sb4
- 2.Qe5#
- 1...Sb6
- 2.Qe5#
- 1...Sf6
- 2.Qe5#
- 1...Sc7
- 2.Qe5#
- 1...g3
- 2.Rh4#
- 1...Sf3
- Tries
- 1.Sh4?
- threat
- 2.Sg2#
- 2.Rf5#
- 1...Sxe3
- 2.Qe5#
- 1...g3
- 2.Rxe4#
- 1...f1Q
- 2.Rf5#
- 1...f1B
- 2.Rf5#
- 1...e6
- 2.Sg2#
- 1...Sf3!
- threat
- 1.Be5+?
- 1...Kxe5
- 2.Rxe4#
- 1...Bxe5!
- 1...Kxe5
- 1.Qd4?
- threat
- 2.Qe5#
- 2.Qxe4#
- 1...Bxb2
- 2.Qxe4#
- 1...Sxe3
- 2.Qxe3#
- 2.Qxe4#
- 1...g3
- 2.Rh4#
- 2.Qxe4#
- 1...Sf3
- 2.Rxe4#
- 2.Qxe4#
- 1...Sf6
- 2.Qe5#
- 1...e5
- 2.Qxe5#
- 2.Qxe4#
- 1...Sc3!
- threat
- 1.Qd6+?
- 1...e5
- 2.Qxe5#
- 1...exd6!
- 1...e5
- 1.Qxe7?
- threat
- 2.Qg5#
- 2.Qd6#
- 2.Qxe4#
- 2.Qe5#
- 1...Bxb2
- 2.Qxe4#
- 1...Sxe3
- 2.Qxe4#
- 1...g3
- 2.Rh4#
- 2.Qh4#
- 2.Qg5#
- 2.Qxe4#
- 1...Sf3
- 2.Rxe4#
- 2.Qxe4#
- 1...Sh3
- 2.Qd6#
- 2.Qxe4#
- 2.Qe5#
- 1...Sc3
- 2.Qd6#
- 2.Qc7#
- 1...Sf6
- 2.Qd6#
- 2.Qe5#
- 2.Qc7#
- 1...Sxe7+!
- threat
- 1.Qc3?
- threat
- 2.Rxe4#
- 2.Qe5#
- 1...Bxb2
- 2.Rxe4#
- 1...Sxe3
- 2.Qxe3#
- 1...g3
- 2.Rxe4#
- 2.Rh4#
- 1...Sf3
- 2.Rxe4#
- 1...Sf6
- 2.Qe5#
- 1...e5
- 2.Rxe4#
- 2.Qxe5#
- 1...Sxc3!
- threat
- 1.Qxd5?
- threat
- 2.Qxe4#
- 2.Qe5#
- 1...Bxb2
- 2.Qxe4#
- 1...g3
- 2.Rh4#
- 2.Qxe4#
- 1...Sf3
- 2.Rxe4#
- 2.Qxe4#
- 1...e5
- 2.Qxe4#
- 2.Qxe5#
- 1...cxd5!
- threat
- 1.Sh4?
- Keys
- 1.Sd4!
- threat
- 2.Se6#
- 1...Kxe3
- 2.Bc1#
- 1...Sxe3
- 2.Qe5#
- 1...Sf3
- 2.Se2#
- 1...g3
- 2.Rxe4#
- 1...Sc7
- 2.Qg5#
- 1...e6
- 2.Sxe6#
- threat
- 1.Sd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- S(b);SBLOCK::R1(C),XP(d)
- S(g);OGATE,XR(C)::QAB1(D),XS(g)
- S(g);OGATE::QAB1(D)
- P(f);OGATEB::R(F)
- Tries
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(g);OGATE,SBLOCK,XR(C)::QAB1(D)
- P(f);SBLOCK::R1(C),XP(d)
- P(c);::R1(F)
- P(i);::S(E)
- Refutation
- S(b);
- Try
- B(A);CHECK
- Vars
- K(e);P_SPINP(d),P_SPINS(g),S_FLIGHT,XB(A)::R1(C),XP(d)
- Refutation
- B(a);XB(A)
- Try
- Q(D);P_PINP(d)
- Threat
- DUALS(2)
- Vars
- B(a);XB(A)::QAR1(D),XP(d)
- S(g);::QAB1(D)
- Refutation
- S(g);
- Try
- Q(D);CHECK
- Vars
- P(i);P_SPINP(i)::QAB1(D),XP(i)
- Refutation
- P(i);XQ(D)
- Try
- Q(D);XP(i)
- Threat
- DUALS(4)
- Vars
- B(a);XB(A)::QAR1(D),XP(d)
- S(g);XR(C)::QAR1(D),XP(d)
- Refutation
- S(g);CHECK,XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- B(a);XB(A)::R1(C),XP(d)
- S(g);OGATE,XR(C)::QAB1(D),XS(g)
- S(b);::R1(C),XP(d)
- S(g);::QAB1(D)
- Refutation
- S(g);XQ(D)
- Try
- Q(D);XS(g)
- Threat
- DUALS(2)
- Vars
- B(a);XB(A)::QAR1(D),XP(d)
- Refutation
- P(h);XQ(D)
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- K(e);OGATEB,S_FLIGHT,XR(C)::B(A)
- S(g);OGATE,SBLOCK,XR(C)::QAB1(D)
- S(b);N_GUARD::S(E)
- P(f);SBLOCK::R1(C),XP(d)
- S(g);OGATE::QAB1(D)
- P(i);::S(E),XP(i)
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