MESON Chess Problem Database
Problem Display
PID: 9896 (3rn2q/2R2B2/2pN1Np1/2p1k3/1R4P1/7p/1K1Q1p1b/8 w - - 0 1)
Rudenko, Valentin Fedorovich
Probleemblad, 1960
#2
8 + 10
| 273 | Mat Plus | 1994 |
SOLUTION
- SOUND
- Sets
- 1...Qxf6
- 2.Re4#
- 1...Rxd6
- 2.Qg5#
- 1...Rd7
- 2.Sxd7#
- 1...Ra8
- 2.Sd7#
- 1...Rb8
- 2.Sd7#
- 1...Rc8
- 2.Sd7#
- 1...Bg1
- 2.Qf4#
- 1...Bf4
- 2.Qxf4#
- 1...Sxd6
- 2.Qc3#
- 1...Sxf6
- 2.Re7#
- 1...Qxf6
- Tries
- 1.Sh7?
- threat
- 2.Re4#
- 2.Re7#
- 1...Rxd6
- 2.Qe3#
- 2.Qg5#
- 2.Qe2#
- 1...Sxd6
- 2.Re7#
- 2.Qc3#
- 1...Sxc7
- 2.Re4#
- 1...cxb4
- 2.Re7#
- 1...Qf6
- 2.Re4#
- 1...Qf8
- 2.Re4#
- 1...Rd7
- 2.Re4#
- 1...Rb8
- 2.Re7#
- 1...Sf6
- 2.Re7#
- 1...Sg7
- 2.Re4#
- 1...c4
- 2.Re7#
- 1...Qxh7!
- threat
- 1.Sg8?
- threat
- 2.Re4#
- 2.Re7#
- 1...Rxd6
- 2.Qe3#
- 2.Qg5#
- 2.Qe2#
- 1...Sxd6
- 2.Re7#
- 2.Qc3#
- 1...Sxc7
- 2.Re4#
- 1...cxb4
- 2.Re7#
- 1...Qf6
- 2.Re4#
- 1...Qh4
- 2.Re4#
- 1...Rd7
- 2.Re4#
- 1...Rb8
- 2.Re7#
- 1...Sf6
- 2.Re7#
- 1...Sg7
- 2.Re4#
- 1...c4
- 2.Re7#
- 1...Qxg8!
- threat
- 1.Rxc6?
- threat
- 2.Sc4#
- 2.Qc3#
- 2.Qg5#
- 1...Qxf6
- 2.Re4#
- 2.Rxc5#
- 2.Qc3#
- 2.Qe3#
- 2.Qe2#
- 2.Qd5#
- 1...Rxd6
- 2.Qg5#
- 1...Sxd6
- 2.Qc3#
- 1...Sxf6
- 2.Qc3#
- 2.Qg5#
- 1...cxb4
- 2.Sc4#
- 1...f1Q
- 2.Qc3#
- 1...f1B
- 2.Qc3#
- 2.Qg5#
- 1...f1R
- 2.Sc4#
- 2.Qc3#
- 1...Qh4
- 2.Sc4#
- 2.Qc3#
- 1...Qh5
- 2.Sc4#
- 2.Qc3#
- 1...Qh6
- 2.Sc4#
- 2.Qc3#
- 1...Bf4
- 2.Sc4#
- 2.Qc3#
- 2.Qxf4#
- 1...Sg7
- 2.Sc4#
- 2.Qc3#
- 1...c4
- 2.Sxc4#
- 1...g5
- 2.Sc4#
- 2.Qc3#
- 2.Qxg5#
- 1...Kxf6!
- threat
- 1.Qe3+?
- 1...Kxd6
- 2.Qe7#
- 1...Kxf6!
- 1...Kxd6
- 1.Qe2+?
- 1...Kxd6
- 2.Qe7#
- 1...Kxf6!
- 1...Kxd6
- 1.Sh7?
- Keys
- 1.Qxf2!
- threat
- 2.Sc4#
- 1...Kxd6
- 2.Qxh2#
- 1...Qxf6
- 2.Qxc5#
- 1...Rxd6
- 2.Re4#
- 1...Sxd6
- 2.Re7#
- 1...Sxf6
- 2.Qxh2#
- 1...Bf4
- 2.Qxf4#
- 1...c4
- 2.Sxc4#
- threat
- 1.Qxf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(j);SBLOCK,XS(F)::R1(C)
- R(h);SBLOCK,XS(E)::QAR2(B)
- R(h);N_GUARD::S(F),XR(h)
- R(h);N_GUARD::S(F)
- R(h);N_GUARD,P_PINR(C)::S(F)
- B(b);N_GUARD::QAB1(B)
- B(b);N_GUARD::QAB1(B),XB(b)
- S(i);SBLOCK,XS(E)::QAB(B)
- S(i);SBLOCK,XS(F)::R(G)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(i);XR(G)::R1(C)
- P(d);XR(C)::R(G)
- Q(j);::R1(C)
- R(h);::R1(C)
- R(h);P_PINR(C)::R(G)
- S(i);::R(G)
- S(i);::R1(C)
- P(d);::R(G)
- Refutation
- Q(j);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(i);XR(G)::R1(C)
- P(d);XR(C)::R(G)
- Q(j);::R1(C)
- R(h);::R1(C)
- R(h);P_PINR(C)::R(G)
- S(i);::R(G)
- S(i);::R1(C)
- P(d);::R(G)
- Refutation
- Q(j);XS(F)
- Try
- R(G);XP(f)
- Threat
- DUALS(3)
- Vars
- R(h);XS(E)::QAR2(B)
- S(i);XS(E)::QAB(B)
- P(d);XR(C)::S(E)
- P(a);::QAB(B)
- P(d);::S(E),XP(d)
- Refutation
- K(e);S_FLIGHT,XS(F)
- Try
- Q(B);CHECK
- Vars
- K(e);OGATE,P_PINS(F),S_FLIGHT,XS(E)::QAB1(B)
- Refutation
- K(e);S_FLIGHT,XS(F)
- Try
- Q(B);CHECK
- Vars
- K(e);OGATE,P_PINS(F),S_FLIGHT,XS(E)::QAB1(B)
- Refutation
- K(e);S_FLIGHT,XS(F)
- Try
- Actual
- Q(B);XP(a)
- Threat
- S(E)
- Vars
- K(e);P_PINS(F),S_FLIGHT,XS(E)::QAB(B),XB(b)
- Q(j);SBLOCK,XS(F)::QAR2(B),XP(d)
- R(h);SBLOCK,XS(E)::R1(C)
- S(i);SBLOCK,XS(E)::R(G)
- S(i);SBLOCK,XS(F)::QAB(B),XB(b)
- B(b);N_GUARD::QAB1(B),XB(b)
- P(d);::S(E),XP(d)
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