MESON Chess Problem Database
Problem Display
PID: 86466 (8/1b1P1K2/2Np1nR1/1BnkB1b1/3pp3/QP2P1r1/8/8 w - - 0 1)
Rudenko, Valentin Fedorovich
Problemas, 1980
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sxb3
- 2.Qxd6#
- 1...Sd3
- 2.Qxd6#
- 1...Sa4
- 2.Qxd6#
- 1...Sa6
- 2.Qxd6#
- 1...Se6
- 2.Qxd6#
- 1...Scxd7
- 2.Qxd6#
- 1...Sg4
- 2.Rxd6#
- 1...Sh5
- 2.Rxd6#
- 1...Sfxd7
- 2.Rxd6#
- 1...Sh7
- 2.Rxd6#
- 1...Sg8
- 2.Rxd6#
- 1...Sxb3
- Tries
- 1.Bxg3?
- threat
- 2.Sb4#
- 2.Se7#
- 2.Rxg5#
- 1...Bxe3
- 2.Sb4#
- 2.Se7#
- 1...Bxc6
- 2.Bc4#
- 2.Rxg5#
- 1...Sxb3
- 2.Se7#
- 2.Rxg5#
- 2.Qxd6#
- 1...Scxd7
- 2.Se7#
- 2.Qxd6#
- 1...Sfxd7
- 2.Sb4#
- 2.Rxd6#
- 1...dxe3
- 2.Rxg5#
- 1...Bh4
- 2.Sb4#
- 2.Se7#
- 1...Bh6
- 2.Sb4#
- 2.Se7#
- 1...Sd3
- 2.Se7#
- 2.Qxd6#
- 1...Sa4
- 2.Se7#
- 2.Rxg5#
- 2.Qxd6#
- 1...Sa6
- 2.Se7#
- 2.Rxg5#
- 2.Qxd6#
- 1...Se6
- 2.Se7#
- 2.Qxd6#
- 1...Sg4
- 2.Sb4#
- 2.Rxd6#
- 1...Sh5
- 2.Sb4#
- 2.Rxg5#
- 2.Rxd6#
- 1...Sh7
- 2.Sb4#
- 2.Rxd6#
- 1...Se8
- 2.Sb4#
- 2.Rxg5#
- 1...Sg8
- 2.Sb4#
- 2.Rxg5#
- 2.Rxd6#
- 1...Bf4!
- threat
- 1.Bxd4?
- threat
- 2.Sb4#
- 2.Se7#
- 1...Rxe3
- 2.Rxg5#
- 1...Bxc6
- 2.Bc4#
- 1...Sfxd7
- 2.Sb4#
- 1...Sd3
- 2.Se7#
- 1...Sa6
- 2.Se7#
- 1...Sg4
- 2.Sb4#
- 1...Sh5
- 2.Sb4#
- 1...Sh7
- 2.Sb4#
- 1...Se8
- 2.Sb4#
- 1...Sg8
- 2.Sb4#
- 1...Bxe3!
- threat
- 1.Bxf6?
- threat
- 2.Sb4#
- 2.Se7#
- 1...Bxc6
- 2.Bc4#
- 1...Sxb3
- 2.Se7#
- 1...Sxd7
- 2.Se7#
- 1...Sd3
- 2.Se7#
- 1...Sa4
- 2.Se7#
- 1...Sa6
- 2.Se7#
- 1...Se6
- 2.Se7#
- 1...Bxf6!
- threat
- 1.Qb4?
- threat
- 2.Qc4#
- 2.Qxd4#
- 1...Bxe3
- 2.Qc4#
- 1...Bxc6
- 2.Qxd4#
- 1...Sxb3
- 2.Qxd6#
- 2.Qc4#
- 1...dxe3
- 2.Qc4#
- 2.Qd4#
- 1...Se6
- 2.Qxd6#
- 2.Qc4#
- 1...d3
- 2.Qc4#
- 2.Qd4#
- 1...dxe5!
- threat
- 1.exd4?
- threat
- 2.Sb4#
- 2.Se7#
- 1...Rxb3
- 2.Se7#
- 1...Bxc6
- 2.Bc4#
- 1...Sfxd7
- 2.Sb4#
- 2.Rxd6#
- 1...dxe5
- 2.Qxc5#
- 1...Bd2
- 2.Se7#
- 1...Sd3
- 2.Se7#
- 2.Qxd6#
- 1...Sa6
- 2.Se7#
- 2.Qxd6#
- 1...Sg4
- 2.Sb4#
- 2.Rxd6#
- 1...Sh5
- 2.Sb4#
- 2.Rxd6#
- 1...Sh7
- 2.Sb4#
- 2.Rxd6#
- 1...Se8
- 2.Sb4#
- 1...Sg8
- 2.Sb4#
- 2.Rxd6#
- 1...e3!
- threat
- 1.d8Q?
- threat
- 2.Qxd6#
- 1...Scd7
- 2.Qxd6#
- 1...Sfd7
- 2.Rxd6#
- 1...Se8!
- threat
- 1.Bxg3?
- Keys
- 1.Bxd6!
- threat
- 2.Qxc5#
- 1...Kxd6
- 2.d8Q#
- 1...Sxb3
- 2.Se7#
- 1...Scxd7
- 2.Se7#
- 1...Sfxd7
- 2.Sb4#
- 1...Sd3
- 2.Se7#
- 1...Sa4
- 2.Se7#
- 1...Sa6
- 2.Se7#
- 1...Se6
- 2.Se7#
- threat
- 1.Bxd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- S(d);OGATE,XP(B)::QAR1(A),XP(g)
- S(d);OGATE::QAR1(A),XP(g)
- S(d);OGATE,XP(H)::QAR1(A),XP(g)
- S(h);OGATE::R1(G),XP(g)
- S(h);OGATE,XP(H)::R1(G),XP(g)
- Tries
- Try
- B(E);XR(a)
- Threat
- DUALS(3)
- Vars
- P(b);XP(C)::R(G),XB(f)
- Refutation
- B(f);
- Try
- B(E);XP(b)
- Threat
- DUALS(2)
- Vars
- R(a);N_GUARD,XP(C)::R(G),XB(f)
- B(i);SBLOCK,XS(F)::B(D)
- S(h);XP(H)::S(F)
- S(d);::S(F)
- S(h);::S(F)
- Refutation
- B(f);XP(C)
- Try
- B(E);XS(h)
- Threat
- DUALS(2)
- Vars
- B(i);SBLOCK,XS(F)::B(D)
- S(d);XP(B)::S(F)
- S(d);XP(H)::S(F)
- S(d);::S(F)
- Refutation
- B(f);XB(E)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- B(f);XP(C)::QAB1(A)
- B(i);XS(F)::QAR1(A),XP(b)
- Refutation
- P(g);XB(E)
- Try
- P(C);XP(b)
- Threat
- DUALS(2)
- Vars
- R(a);XP(B)::S(F)
- B(i);SBLOCK,XS(F)::B(D)
- P(g);N_GUARD,XB(E)::QAR1(A),XS(d)
- B(f);::S(F)
- S(h);::S(F)
- Refutation
- P(c);
- Try
- P(H);P_PINP(g)
- Threat
- QAR1(H),XP(g)
- Vars
- S(d);N_SPINP(g),OGATE::QAR1(A),XP(g)
- S(h);N_SPINP(g),OGATE::R1(G),XP(g)
- Refutation
- S(h);
- Try
- Actual
- B(E);XP(g)
- Threat
- QAR1(A),XS(d)
- Vars
- K(e);P-FLIGHT,P_SPINS(d),XB(E)::P=Q
- S(d);XP(B)::S(F)
- S(d);XP(H)::S(F)
- S(h);XP(H)::S(F)
- S(d);::S(F)
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