MESON Chess Problem Database
Problem Display
PID: 83726 (5K2/1n1P3P/1PPR1pPr/4kPNp/1p5R/6PQ/brpN4/bn4BB w - - 0 1)
Ellerman, Arnoldo
The Problemist, 1969
#2
15 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb3
- 2.Sc4#
- 2.Sf7#
- 2.Rd5#
- 2.Re6#
- 1...Bc4
- 2.Sxc4#
- 1...Bd5
- 2.Rxd5#
- 1...Be6
- 2.Rxe6#
- 1...Bf7
- 2.Sxf7#
- 1...Sxd6
- 2.Bd4#
- 1...b3
- 2.Sc4#
- 2.Sf7#
- 2.Rd5#
- 2.Re6#
- 1...Rb3
- Tries
- 1.Ke7?
- threat
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 2.Re4#
- 1...Sxd2
- 2.Bd4#
- 1...Sxd6
- 2.Bd4#
- 1...fxg5
- 2.Sf3#
- 2.Bd4#
- 2.Re4#
- 1...Rb3
- 2.Sc4#
- 2.Sf7#
- 2.Re4#
- 2.Rd5#
- 2.Re6#
- 1...Bd5
- 2.Bd4#
- 2.Rxd5#
- 1...Sc3
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 1...Sc5
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 1...Rxh7+!
- threat
- 1.Sb3?
- threat
- 2.Sf7#
- 2.Rd5#
- 2.Re6#
- 1...Kxd6
- 2.Sf7#
- 1...Rxh7
- 2.Rd5#
- 2.Re6#
- 1...Sxd6
- 2.Bd4#
- 1...fxg5
- 2.Re6#
- 1...Sc3
- 2.Sf7#
- 2.Re6#
- 1...Sc5
- 2.Sf7#
- 2.Rd5#
- 1...Sd8
- 2.Rd5#
- 1...Bxb3!
- threat
- 1.Sde4?
- threat
- 2.Sf3#
- 2.Bd4#
- 1...fxg5
- 2.Bd4#
- 1...Rb3
- 2.Sf7#
- 1...Bd5
- 2.Sf3#
- 1...Sd2
- 2.Bd4#
- 1...Sxd6!
- threat
- 1.Sge4?
- threat
- 2.Sf3#
- 2.Bd4#
- 1...Sxd2
- 2.Bd4#
- 1...Rb3
- 2.Sc4#
- 1...Bd5
- 2.Sf3#
- 1...Sxd6!
- threat
- 1.Rhd4?
- threat
- 2.Sdf3#
- 2.Sgf3#
- 1...fxg5
- 2.Sf3#
- 1...Bd5
- 2.R4xd5#
- 2.R6xd5#
- 1...Rb3
- 2.Sc4#
- 2.Sf7#
- 2.R4d5#
- 2.R6d5#
- 2.Re6#
- 1...Sxd2!
- threat
- 1.Rxf6?
- threat
- 2.Bd4#
- 1...Be6
- 2.Rxe6#
- 1...Rb3
- 2.Re6#
- 1...Kxf6!
- threat
- 1.Qf1?
- threat
- 2.Qf4#
- 1...Kxd6
- 2.Qf4#
- 1...fxg5!
- threat
- 1.Qh2?
- threat
- 2.g4#
- 1...Kxd6
- 2.g4#
- 1...Rb3
- 2.Rd5#
- 1...Kxf5!
- threat
- 1.d8Q?
- threat
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 2.Re4#
- 2.Qxf6#
- 1...Rxg6
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 2.Re4#
- 1...Sxd2
- 2.Bd4#
- 2.Qxf6#
- 1...Sxd6
- 2.Bd4#
- 1...fxg5
- 2.Sf3#
- 2.Bd4#
- 2.Re4#
- 2.Qf6#
- 1...Rb3
- 2.Sc4#
- 2.Sf7#
- 2.Re4#
- 2.Rd5#
- 2.Re6#
- 2.Qxf6#
- 2.Qe7#
- 1...Bd5
- 2.Bd4#
- 2.Rxd5#
- 2.Qxf6#
- 1...Be6
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 2.Re4#
- 2.Rxe6#
- 1...Sc3
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 2.Qxf6#
- 1...Sc5
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 2.Qxf6#
- 1...Sxd8!
- threat
- 1.d8R?
- threat
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 2.Re4#
- 1...Sxd2
- 2.Bd4#
- 1...Sxd6
- 2.Bd4#
- 1...fxg5
- 2.Sf3#
- 2.Bd4#
- 2.Re4#
- 1...Rb3
- 2.Sc4#
- 2.Sf7#
- 2.Re4#
- 2.Rd5#
- 2.Re6#
- 1...Bd5
- 2.Bd4#
- 2.Rxd5#
- 1...Sc3
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 1...Sc5
- 2.Sdf3#
- 2.Sgf3#
- 2.Bd4#
- 1...Sxd8!
- threat
- 1.Ke7?
- Keys
- 1.Rc4!
- threat
- 2.Sf7#
- 2.Rd5#
- 2.Re6#
- 1...Kxd6
- 2.Sf7#
- 1...Rxh7
- 2.Rd5#
- 2.Re6#
- 1...Bxc4
- 2.Sxc4#
- 1...Sxd6
- 2.Bd4#
- 1...fxg5
- 2.Re6#
- 1...Sc3
- 2.Sf7#
- 2.Re6#
- 1...Sc5
- 2.Sf7#
- 2.Rd5#
- 1...Sd8
- 2.Rd5#
- threat
- 1.Rc4!
Illegal position.
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- B(c);N_GUARD::S(C),XB(c)
- B(c);N_GUARD::R1(K),XB(c)
- B(c);N_GUARD::S(H),XB(c)
- S(k);SBLOCK,XR(K)::B(A)
- Tries
- Try
- K(O);S_FLIGHT
- Threat
- DUALS(4)
- Vars
- S(b);XS(C)::B(A)
- S(k);XR(K)::B(A)
- Refutation
- R(j);CHECK,XP(N)
- Try
- S(C);
- Threat
- DUALS(3)
- Vars
- K(g);S_FLIGHT,XR(K)::S(H)
- S(k);SBLOCK,XR(K)::B(A)
- P(i);XS(H)::R1(K)
- S(k);::R1(K)
- Refutation
- B(c);XS(C)
- Try
- S(C);
- Threat
- DUALS(2)
- Vars
- P(i);XS(H)::B(A)
- R(d);S_CUTB(c)::S(H)
- B(c);::S(H)
- S(b);::B(A)
- Refutation
- S(k);XR(K)
- Try
- S(H);
- Threat
- DUALS(2)
- Vars
- S(b);XS(C)::B(A)
- R(d);S_CUTB(c)::S(C)
- B(c);::S(C)
- Refutation
- S(k);XR(K)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- P(i);XS(H)::S(C)
- Refutation
- S(b);XS(C)
- Try
- R(K);XP(i)
- Threat
- B(A)
- Vars
- B(c);N_GUARD::R1(K),XB(c)
- R(d);S_CUTB(c)::R1(K)
- Refutation
- K(g);S_FLIGHT,XR(K)
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- K(g);S_FLIGHT,XR(K)::QAB(E)
- Refutation
- P(i);XS(H)
- Try
- Q(E);
- Threat
- QAB(E)+P(D)
- Vars
- K(g);S_FLIGHT,XR(K)::QAB(E)+P(D)
- R(d);S_CUTB(c)::R1(K)
- Refutation
- K(g);P-FLIGHT,XP(G)
- Try
- P(M);
- Threat
- DUALS(5)
- Vars
- S(k);XR(K)::B(A)
- Refutation
- S(k);XQ(M)
- Try
- P(M);
- Threat
- DUALS(4)
- Vars
- S(b);XS(C)::B(A)
- S(k);XR(K)::B(A)
- Refutation
- S(k);XR(M)
- Try
- Actual
- R(F);
- Threat
- DUALS(3)
- Vars
- K(g);S_FLIGHT,XR(K)::S(H)
- B(c);XR(F)::S(C),XB(c)
- S(k);SBLOCK,XR(K)::B(A)
- P(i);XS(H)::R1(K)
- S(k);::R1(K)
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