MESON Chess Problem Database
Problem Display
PID: 86553 (8/5bp1/p7/5QR1/P1kp3K/pr1N4/qP1B3p/N5RB w - - 0 1)
Melnichenko, Viktor Oleksandrovich
Canadian Chess Chat, 1981
#2
10 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rb4
- 2.Rc1#
- 1...Rb5
- 2.Rc1#
- 1...Rb6
- 2.Rc1#
- 1...Rb7
- 2.Rc1#
- 1...Rb8
- 2.Rc1#
- 1...Bd5
- 2.Bxd5#
- 1...Bh5
- 2.Bd5#
- 1...Bg6
- 2.Bd5#
- 1...Be8
- 2.Bd5#
- 1...Rxd3
- Tries
- 1.Sc1?
- threat
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rc3
- 2.Qc5#
- 1...Bd5
- 2.Qxd5#
- 1...d3
- 2.R1g4#
- 2.R5g4#
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 2.Qc5#
- 1...Re3
- 2.Qc8#
- 2.Qc5#
- 1...Rf3
- 2.Qc8#
- 2.Qc5#
- 1...Rb5
- 2.Qc2#
- 2.Qd3#
- 1...Rb6
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb7
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb8
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 2.Qxf7#
- 1...Bh5
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be6
- 2.Qxe6#
- 2.Qc5#
- 1...Bg6
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be8
- 2.Qe6#
- 2.Qc5#
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 2.Qc5#
- 1...Rh3+!
- threat
- 1.Se1?
- threat
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rc3
- 2.Qc5#
- 1...Bd5
- 2.Qxd5#
- 1...d3
- 2.R1g4#
- 2.R5g4#
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 2.Qc5#
- 1...Re3
- 2.Qc8#
- 2.Qc5#
- 1...Rf3
- 2.Qc8#
- 2.Qc5#
- 1...Rb5
- 2.Qc2#
- 2.Qd3#
- 1...Rb6
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb7
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb8
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 2.Qxf7#
- 1...Bh5
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be6
- 2.Qxe6#
- 2.Qc5#
- 1...Bg6
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be8
- 2.Qe6#
- 2.Qc5#
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 2.Qc5#
- 1...Rh3+!
- threat
- 1.Sf2?
- threat
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rc3
- 2.Qc5#
- 1...Bd5
- 2.Qxd5#
- 1...d3
- 2.R1g4#
- 2.R5g4#
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 2.Qc5#
- 1...Re3
- 2.Qc8#
- 2.Qc5#
- 1...Rf3
- 2.Qc8#
- 2.Qc5#
- 1...Rb5
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 1...Rb6
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb7
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb8
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 2.Qxf7#
- 1...Bh5
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be6
- 2.Qxe6#
- 2.Qc5#
- 1...Bg6
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be8
- 2.Qe6#
- 2.Qc5#
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 2.Qc5#
- 1...Rh3+!
- threat
- 1.Sb4?
- threat
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rxb4
- 2.Rc1#
- 2.Qc2#
- 1...Rc3
- 2.Qc5#
- 1...Bd5
- 2.Qxd5#
- 1...d3
- 2.R1g4#
- 2.R5g4#
- 2.Qe4#
- 2.Qg4#
- 2.Qf4#
- 2.Qc5#
- 1...Re3
- 2.Qc8#
- 2.Qc5#
- 1...Rf3
- 2.Qc8#
- 2.Qc5#
- 1...Bh5
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be6
- 2.Qxe6#
- 2.Qc5#
- 1...Bg6
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be8
- 2.Qe6#
- 2.Qc5#
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 2.Qc5#
- 1...Rh3+!
- threat
- 1.Sf4?
- threat
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rc3
- 2.Qc5#
- 1...Bd5
- 2.Qxd5#
- 1...d3
- 2.Qe4#
- 2.Qc5#
- 1...Re3
- 2.Qc8#
- 2.Qc5#
- 1...Rb5
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 1...Rb6
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb7
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 1...Rb8
- 2.Rc1#
- 2.Qc2#
- 2.Qd3#
- 2.Qc5#
- 2.Qxf7#
- 1...Bh5
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be6
- 2.Qxe6#
- 2.Qc5#
- 1...Bg6
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be8
- 2.Qe6#
- 2.Qc5#
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 2.Qc5#
- 1...Rh3+!
- threat
- 1.R1g3?
- threat
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rb6
- 2.Qc5#
- 1...Rb7
- 2.Qc5#
- 1...Rb8
- 2.Qc5#
- 2.Qxf7#
- 1...Bd5
- 2.Bxd5#
- 2.Qxd5#
- 1...Bh5
- 2.Bd5#
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be6
- 2.Qxe6#
- 2.Qc5#
- 1...Bg6
- 2.Bd5#
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be8
- 2.Bd5#
- 2.Qe6#
- 2.Qc5#
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 2.Qc5#
- 1...Rb5!
- threat
- 1.R5g3?
- threat
- 2.Qc8#
- 2.Qc5#
- 2.Qxf7#
- 1...Rxd3
- 2.Qc8#
- 1...Rb5
- 2.Rc1#
- 1...Rb6
- 2.Rc1#
- 2.Qc5#
- 1...Rb7
- 2.Rc1#
- 2.Qc5#
- 1...Rb8
- 2.Rc1#
- 2.Qc5#
- 2.Qxf7#
- 1...Bd5
- 2.Bxd5#
- 2.Qxd5#
- 1...Bh5
- 2.Bd5#
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be6
- 2.Qxe6#
- 2.Qc5#
- 1...Bg6
- 2.Bd5#
- 2.Qe6#
- 2.Qc8#
- 2.Qc5#
- 2.Qd5#
- 1...Be8
- 2.Bd5#
- 2.Qe6#
- 2.Qc5#
- 2.Qd5#
- 1...Bg8
- 2.Qc8#
- 2.Qc5#
- 1...g5+!
- threat
- 1.Rg6?
- threat
- 2.Rc6#
- 1...Bxg6
- 2.Bd5#
- 1...Rb5
- 2.Rc1#
- 1...Rb6
- 2.Rc1#
- 1...Bd5
- 2.Bxd5#
- 1...Be8
- 2.Bd5#
- 1...Be6!
- threat
- 1.Qe4?
- threat
- 2.Rc5#
- 1...Rxd3
- 2.Qc6#
- 1...Rb5
- 2.Rc1#
- 1...Bd5!
- threat
- 1.Qg6?
- threat
- 2.Rc5#
- 1...Rxd3
- 2.Qxf7#
- 2.Qxa6#
- 2.Qc6#
- 1...Rb5
- 2.Rc1#
- 1...Bd5
- 2.Bxd5#
- 1...Bxg6!
- threat
- 1.Qf1?
- threat
- 2.Rc5#
- 1...Rxd3
- 2.Qxf7#
- 1...Bd5
- 2.Bxd5#
- 1...Rb5!
- threat
- 1.Qf3?
- threat
- 2.Rc5#
- 1...Rxd3
- 2.Qc6#
- 2.Qxf7#
- 1...Rb5
- 2.Rc1#
- 1...Bd5!
- threat
- 1.Sc1?
- Keys
- 1.Qh3!
- threat
- 2.Rc5#
- 1...Rxd3
- 2.Qc8#
- 1...Rb5
- 2.Rc1#
- 1...Bd5
- 2.Bxd5#
- threat
- 1.Qh3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- R(d);N_GUARD::R(B)
- B(h);N_GUARD::B(C),XB(h)
- B(h);N_GUARD::B(C)
- Tries
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(d);::QAR1(I)
- B(h);N_GUARD::QAB1(I),XB(h)
- Refutation
- R(d);CHECK
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(d);::QAR1(I)
- B(h);N_GUARD::QAB1(I),XB(h)
- Refutation
- R(d);CHECK
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(d);::QAR1(I)
- B(h);N_GUARD::QAB1(I),XB(h)
- Refutation
- R(d);CHECK
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(d);::QAR1(I)
- B(h);N_GUARD::QAB1(I),XB(h)
- Refutation
- R(d);CHECK
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(d);::QAR1(I)
- B(h);N_GUARD::QAB1(I),XB(h)
- Refutation
- R(d);CHECK
- Try
- R(B);
- Threat
- DUALS(3)
- Vars
- R(d);::QAR1(I)
- Refutation
- R(d);
- Try
- R(J);
- Threat
- DUALS(3)
- Vars
- R(d);XS(F)::QAR(I)
- R(d);N_GUARD::R(B)
- Refutation
- P(i);CHECK
- Try
- R(J);
- Threat
- R(J)
- Vars
- B(h);N_GUARD,XR(J)::B(C)
- R(d);N_GUARD::R(B)
- B(h);N_GUARD::B(C),XB(h)
- B(h);N_GUARD::B(C)
- Refutation
- B(h);
- Try
- Q(I);P_PINP(f)
- Threat
- R1(J)
- Vars
- R(d);SBLOCK,XS(F)::QAR2(I)
- R(d);N_GUARD::R(B)
- Refutation
- B(h);
- Try
- Q(I);
- Threat
- R1(J)
- Vars
- R(d);N_GUARD::R(B)
- B(h);N_GUARD::B(C),XB(h)
- Refutation
- B(h);XQ(I)
- Try
- Q(I);
- Threat
- R1(J)
- Vars
- R(d);P_SPINR(d),SBLOCK,XS(F)::QAB(I),XB(h)
- B(h);N_GUARD::B(C),XB(h)
- Refutation
- R(d);
- Try
- Q(I);
- Threat
- R1(J)
- Vars
- R(d);N_GUARD::R(B)
- Refutation
- B(h);
- Try
- Actual
- Q(I);
- Threat
- R1(J)
- Vars
- R(d);SBLOCK,XS(F)::QAR(I)
- R(d);N_GUARD::R(B)
- B(h);N_GUARD::B(C),XB(h)
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