MESON Chess Problem Database
Problem Display
PID: 67075 (5b1K/nq4p1/8/3N2RQ/2kP4/PR3r1p/BB6/5r2 w - - 0 1)
Shanshin, Valery Yurevich
Praca, 1997
#2
9 + 8
| 5417 | FIDE Album (1995-1997) | 2004 |
SOLUTION
- SOUND
- Sets
- 1...Qa8
- 2.Sb6#
- 1...Qc8
- 2.Sb6#
- 1...Qb6
- 2.Sxb6#
- 1...Qd7
- 2.Sb6#
- 1...Qe7
- 2.Sb6#
- 1...Qf7
- 2.Sb6#
- 1...Rf2
- 2.Se3#
- 1...Rxb3
- 2.Qe2#
- 1...Rd3
- 2.Rb4#
- 1...Re3
- 2.Sxe3#
- 1...Rf4
- 2.Se3#
- 2.Qe2#
- 1...Rf5
- 2.Se3#
- 1...Rf6
- 2.Se3#
- 2.Qe2#
- 1...Rf7
- 2.Se3#
- 2.Qe2#
- 1...Sb5
- 2.Re3#
- 2.Rxf3#
- 1...Qa8
- Tries
- 1.Sf4?
- threat
- 2.Rb4#
- 1...Qxb3
- 2.Qf7#
- 1...Rxb3
- 2.Qe2#
- 1...Rxf4
- 2.Qe2#
- 1...Qb4
- 2.Rxb4#
- 2.Qf7#
- 1...Bb4
- 2.Rd3#
- 2.Re3#
- 2.Rxf3#
- 2.Rxb4#
- 1...Bxa3!
- threat
- 1.Re3+?
- 1...Qb3
- 2.Sb6#
- 1...Kb5!
- 1...Qb3
- 1.Rxf3+?
- 1...Qb3
- 2.Sb6#
- 1...Kb5!
- 1...Qb3
- 1.Rb6+?
- 1...Rb3
- 2.Qe2#
- 1...Kd3!
- 1...Rb3
- 1.Rxb7+?
- 1...Rb3
- 2.Qe2#
- 1...Kd3!
- 1...Rb3
- 1.Qxf3?
- threat
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qxd5
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qxd5#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qxb3
- 2.Sb6#
- 2.Qe2#
- 2.Qxf1#
- 2.Qxb3#
- 1...Qb4
- 2.Se3#
- 2.Rxb4#
- 2.Qe2#
- 2.Qxf1#
- 2.Qd3#
- 1...Bb4
- 2.Se3#
- 2.Rxb4#
- 2.Qe2#
- 2.Qxf1#
- 2.Qd3#
- 1...Qa6
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qc6
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qa8
- 2.Se3#
- 2.Sb6#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qc8
- 2.Se3#
- 2.Sb6#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qb5
- 2.Se3#
- 2.Rb4#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qb6
- 2.Se3#
- 2.Sxb6#
- 2.Rb4#
- 2.Rxb6#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qc7
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qd7
- 2.Se3#
- 2.Sb6#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Qe7
- 2.Sb6#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qc3#
- 2.Qd3#
- 1...Qf7
- 2.Se3#
- 2.Sb6#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rb8#
- 2.Qe2#
- 2.Qc3#
- 2.Qd3#
- 1...Qb8
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rb7#
- 2.Rxb8#
- 2.Qe2#
- 2.Qxf1#
- 2.Qc3#
- 2.Qd3#
- 1...Ra1
- 2.Se3#
- 2.Rb4#
- 2.Qe2#
- 2.Qc3#
- 2.Qd3#
- 1...Rb1
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qe2#
- 2.Qc3#
- 2.Qd3#
- 1...Rc1
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qe2#
- 2.Qd3#
- 1...Rd1
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qc3#
- 1...Re1
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qc3#
- 2.Qd3#
- 1...Rg1
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qe2#
- 2.Qc3#
- 2.Qd3#
- 1...Rh1
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qe2#
- 2.Qc3#
- 2.Qd3#
- 1...Rf2
- 2.Se3#
- 2.Rb4#
- 2.Rb6#
- 2.Rxb7#
- 2.Qc3#
- 2.Qd3#
- 1...Sb5
- 2.Se3#
- 2.Rd3#
- 2.Re3#
- 2.Rb4#
- 2.Qe2#
- 2.Qxf1#
- 2.Qd3#
- 1...Rxf3!
- threat
- 1.Qf7?
- threat
- 2.Se3#
- 2.Sb6#
- 1...Qxd5
- 2.Qxd5#
- 1...Qxb3
- 2.Sf4#
- 1...Qxf7
- 2.Sb6#
- 1...Rxb3
- 2.Qxf1#
- 1...Rxf7
- 2.Se3#
- 1...Qb6
- 2.Se3#
- 2.Sxb6#
- 1...Re3
- 2.Sxe3#
- 2.Sb6#
- 1...Rc3!
- threat
- 1.Qh7?
- threat
- 2.Rb4#
- 1...Qxb3
- 2.Sb6#
- 1...Rxb3
- 2.Se3#
- 1...Qb4
- 2.Rxb4#
- 1...Rf5
- 2.Se3#
- 1...Bb4
- 2.Rxb4#
- 1...g6!
- threat
- 1.Sf4?
- Keys
- 1.Qg6!
- threat
- 2.Rb4#
- 1...Qxb3
- 2.Sb6#
- 1...Rxb3
- 2.Se3#
- 1...Qb4
- 2.Rxb4#
- 1...Rf5
- 2.Se3#
- 1...Bb4
- 2.Rxb4#
- threat
- 1.Qg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD::S(F)
- Q(f);N_GUARD::S(F),XQ(f)
- R(b);N_GUARD::S(F)
- R(b);OGATE,P_SPINR(b),XR(D)::QAB(H)
- R(b);SBLOCK::B(A)+R(D),DCHECK
- R(b);N_GUARD::S(F),XR(b)
- Tries
- Try
- S(F);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(f);N_GUARD,P_SPINQ(f),XR(D)::QAB(H)
- R(b);OGATE,P_SPINR(b),XR(D)::QAB(H)
- R(b);OGATE,XS(F)::QAB(H)
- Refutation
- B(h);XP(C)
- Try
- R(D);CHECK
- Vars
- Q(f);P_SPINQ(f)::S(F)
- Refutation
- K(d);S_FLIGHT
- Try
- R(D);CHECK,XR(b)
- Vars
- Q(f);P_SPINQ(f)::S(F)
- Refutation
- K(d);S_FLIGHT
- Try
- R(D);CHECK
- Vars
- R(b);OGATE,P_SPINR(b)::QAB(H)
- Refutation
- K(d);S_FLIGHT
- Try
- R(D);CHECK,XQ(f)
- Vars
- R(b);OGATE,P_SPINR(b)::QAB(H)
- Refutation
- K(d);S_FLIGHT
- Try
- Q(H);XR(b)
- Threat
- DUALS(8)
- Refutation
- R(a);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(f);OGATE,P_SPINQ(f),XS(F)::QAB1(H),XQ(f)
- Q(f);N_GUARD,P_SPINQ(f),XR(D)::QAB(H)+S(F)
- Q(f);XQ(H)::S(F)
- R(b);OGATE,P_SPINR(b),XR(D)::QAB(H),XR(a)
- R(b);XQ(H)::S(F)
- Refutation
- R(b);
- Try
- Q(H);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(f);N_GUARD,P_SPINQ(f),XR(D)::S(F)
- R(b);N_GUARD,P_SPINR(b),XR(D)::S(F)
- Q(f);::B(A)+R(D),DCHECK,XQ(f)
- R(b);N_GUARD::S(F)
- B(h);::B(A)+R(D),DCHECK,XB(h)
- Refutation
- P(g);
- Try
- Actual
- Q(H);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(f);N_GUARD,P_SPINQ(f),XR(D)::S(F)
- R(b);N_GUARD,P_SPINR(b),XR(D)::S(F)
- Q(f);::B(A)+R(D),DCHECK,XQ(f)
- R(b);N_GUARD::S(F)
- B(h);::B(A)+R(D),DCHECK,XB(h)
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