MESON Chess Problem Database
Problem Display
PID: 83741 (nBn5/r3p1Q1/1pB1kP2/7R/8/5N1b/4P3/b2R2K1 w - - 0 1)
Ellerman, Arnoldo
Rio de Janeiro-400 JT (Boletim da UBP), 1965
#2
9 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.Bd7#
- 1...Ra3
- 2.Bd7#
- 1...Ra4
- 2.Bd7#
- 1...Ra5
- 2.Bd7#
- 1...Ra6
- 2.Bd7#
- 1...Rd7
- 2.Bxd7#
- 1...Bd4+
- 2.Sxd4#
- 1...Be5
- 2.Rxe5#
- 1...Bxf6
- 2.Qg8#
- 1...Bf5
- 2.Sg5#
- 1...Sc7
- 2.Bd7#
- 1...exf6
- 2.Bd5#
- 1...Ra2
- Tries
- 1.Se5?
- threat
- 2.Bd5#
- 2.Qf7#
- 1...Bxe5
- 2.Rxe5#
- 1...exf6
- 2.Bd5#
- 1...Ra5
- 2.Bd7#
- 2.Qf7#
- 1...Rc7
- 2.Qf7#
- 1...Rd7
- 2.Bxd7#
- 2.Qf7#
- 1...Bg2
- 2.Qf7#
- 1...Sc7
- 2.Bd7#
- 2.Qf7#
- 1...Sd6
- 2.Bd5#
- 1...Bd4+!
- threat
- 1.Be5?
- threat
- 2.Qg8#
- 1...Bd4+
- 2.Sxd4#
- 1...Bxe5
- 2.Rxe5#
- 1...exf6
- 2.Bd5#
- 2.Qxf6#
- 1...Sd6!
- threat
- 1.Bxa7?
- threat
- 2.Bd7#
- 1...Sd6
- 2.Qxe7#
- 1...Bd4+!
- threat
- 1.Bc7?
- threat
- 2.Bd7#
- 1...Bd4+
- 2.Sxd4#
- 1...Sd6
- 2.Qxe7#
- 1...Rxc7!
- threat
- 1.Rdd5?
- threat
- 2.Sg5#
- 1...Bd4+
- 2.Sxd4#
- 1...Bxf6
- 2.Qg8#
- 1...Be5
- 2.Rdxe5#
- 2.Rhxe5#
- 1...exf6!
- threat
- 1.Rd6+?
- 1...exd6
- 2.Bd5#
- 1...Sxd6!
- 1...exd6
- 1.Rd8?
- threat
- 2.Bd5#
- 1...Bd4+
- 2.Sxd4#
- 1...Ra5
- 2.Bd7#
- 1...Rd7
- 2.Bxd7#
- 1...Sc7!
- threat
- 1.Rb5?
- threat
- 2.Sg5#
- 1...Bd4+
- 2.Sxd4#
- 1...Bxf6
- 2.Qg8#
- 1...Be5
- 2.Rxe5#
- 1...exf6!
- threat
- 1.Rhd5?
- threat
- 2.Sg5#
- 1...Bd4+
- 2.Sxd4#
- 1...Bxf6
- 2.Qg8#
- 1...Be5
- 2.Rxe5#
- 1...exf6!
- threat
- 1.f7?
- threat
- 2.f8S#
- 1...Bd4+
- 2.Sxd4#
- 1...Bxg7!
- threat
- 1.Se5?
- Keys
- 1.Rd4!
- threat
- 2.Re5#
- 1...Bxd4+
- 2.Sxd4#
- 1...exf6
- 2.Bd5#
- 1...Ra5
- 2.Bd7#
- 1...Bf5
- 2.Sg5#
- threat
- 1.Rd4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 8
- Sets
- R(e);N_GUARD::B(F)
- R(e);N_GUARD::B(F),XR(e)
- B(a);CHECK,N_GUARD::S(D),XB(a)
- B(a);N_GUARD::R1(E),XB(a)
- B(a);SBLOCK,XP(G)::QAB(H)
- B(b);SBLOCK::S(D)
- S(g);S_CUTR(e)::B(F)
- P(f);XP(G)::B(F)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- B(a);OGATE,XS(D)::R1(E),XB(a)
- P(f);XP(G)::B(F)
- R(e);::QAB1(H)
- B(b);::QAB1(H)
- S(h);::B(F)
- Refutation
- B(a);CHECK
- Try
- B(I);
- Threat
- QAB(H)
- Vars
- B(a);CHECK,N_GUARD::S(D),XB(a)
- B(a);OGATE,XB(I)::R1(E),XB(a)
- Refutation
- S(h);
- Try
- B(I);XR(e)
- Threat
- B(F)
- Vars
- S(h);N_GUARD::QAR1(H),XP(f)
- Refutation
- B(a);CHECK
- Try
- B(I);
- Threat
- B(F)
- Vars
- B(a);CHECK,N_GUARD::S(D),XB(a)
- S(h);N_GUARD::QAR1(H),XP(f)
- Refutation
- R(e);XB(I)
- Try
- R(A);
- Threat
- S(D)
- Vars
- B(a);CHECK,N_GUARD::S(D),XB(a)
- B(a);SBLOCK,XP(G)::QAB(H)
- Refutation
- P(f);XP(G)
- Try
- R(A);CHECK
- Vars
- P(f);XR(A)::B(F)
- Refutation
- S(h);XR(A)
- Try
- R(A);
- Threat
- B(F)
- Vars
- B(a);CHECK,N_GUARD::S(D),XB(a)
- R(e);N_GUARD::B(F)
- R(e);N_GUARD::B(F),XR(e)
- Refutation
- S(g);
- Try
- R(E);
- Threat
- S(D)
- Vars
- B(a);CHECK,N_GUARD::S(D),XB(a)
- B(a);SBLOCK,XP(G)::QAB(H)
- B(a);N_GUARD::R1(E),XB(a)
- Refutation
- P(f);XP(G)
- Try
- R(E);
- Threat
- S(D)
- Vars
- B(a);CHECK,N_GUARD::S(D),XB(a)
- B(a);SBLOCK,XP(G)::QAB(H)
- B(a);N_GUARD::R1(E),XB(a)
- Refutation
- P(f);XP(G)
- Try
- P(G);
- Threat
- P=S
- Vars
- B(a);CHECK,N_GUARD::S(D),XB(a)
- Refutation
- B(a);XQ(H)
- Try
- Actual
- R(A);
- Threat
- R1(E)
- Vars
- B(a);CHECK,XR(A)::S(D),XB(a)
- P(f);XP(G)::B(F)
- R(e);N_GUARD::B(F)
- B(b);SBLOCK::S(D)
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