MESON Chess Problem Database
Problem Display
PID: 261396 (7Q/BR3pp1/8/K2n1p2/b3kP2/4PN2/6q1/3RN3 w - - 0 1)
Tkachenko, Sergiy Ivanovich
Neue Zurcher Zeitung, 1997
#2
9 + 7
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Sd2#
- 2.Sg5#
- 1...Qh1
- 2.Sd2#
- 2.Sg5#
- 1...Qh3
- 2.Sd2#
- 2.Sg5#
- 1...Qg1
- 2.Sd2#
- 1...Qa2
- 2.Sg5#
- 1...Qb2
- 2.Sg5#
- 1...Qc2
- 2.Sg5#
- 1...Qd2+
- 2.Sxd2#
- 1...Qe2
- 2.Sg5#
- 1...Qf2
- 2.Sg5#
- 1...Qh2
- 2.Sg5#
- 1...Qg3
- 2.Sd2#
- 1...Qg4
- 2.Sd2#
- 1...Qg5
- 2.Sd2#
- 2.Sxg5#
- 1...Qg6
- 2.Sd2#
- 1...Sc3
- 2.Rb4#
- 2.Re7#
- 1...Sxe3
- 2.Rd4#
- 1...Sb4
- 2.Rxb4#
- 2.Re7#
- 1...Sxf4
- 2.Rb4#
- 1...Sb6
- 2.Re7#
- 1...Sf6
- 2.Rb4#
- 2.Re7#
- 1...Sc7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 2.Rxe7#
- 1...g5
- 2.Qd4#
- 2.Qe5#
- 1...g6
- 2.Qd4#
- 2.Qe5#
- 1...Qf1
- Tries
- 1.Rb3?
- threat
- 2.Rd4#
- 1...Qd2+
- 2.Sxd2#
- 1...Qb2
- 2.Sg5#
- 1...Sc3
- 2.Rb4#
- 1...Bxb3!
- threat
- 1.Qxg7?
- threat
- 2.Qd4#
- 2.Qe5#
- 1...Qd2+
- 2.Sxd2#
- 1...Qxg7
- 2.Sd2#
- 1...Qb2
- 2.Sg5#
- 1...Sf6
- 2.Rb4#
- 2.Re7#
- 1...f6!
- threat
- 1.Qa8?
- threat
- 2.Rb4#
- 2.Re7#
- 1...Qd2+
- 2.Sxd2#
- 1...Sxe3
- 2.Rd4#
- 2.Rb4#
- 1...Sb6
- 2.Re7#
- 1...Qf1
- 2.Sd2#
- 2.Sg5#
- 2.Re7#
- 1...Qa2
- 2.Sg5#
- 2.Re7#
- 1...Qb2
- 2.Sg5#
- 1...Qc2
- 2.Sg5#
- 2.Re7#
- 1...Qe2
- 2.Sg5#
- 2.Re7#
- 1...Qg5
- 2.Sd2#
- 2.Sxg5#
- 2.Rb4#
- 1...Qg6
- 2.Sd2#
- 2.Rb4#
- 1...Bb3
- 2.Re7#
- 1...Bb5
- 2.Re7#
- 1...Bd7
- 2.Rb4#
- 1...Sb4
- 2.Rxb4#
- 2.Re7#
- 1...Sc7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 2.Rxe7#
- 1...Bc6!
- threat
- 1.Qb8?
- threat
- 2.Qe5#
- 1...Qd2+
- 2.Sxd2#
- 1...Qb2
- 2.Sg5#
- 1...Sc7
- 2.Rb4#
- 1...f6!
- threat
- 1.Qe8+?
- 1...Se7
- 2.Rb4#
- 2.Rxe7#
- 2.Qxa4#
- 2.Qxe7#
- 1...Bxe8!
- 1...Se7
- 1.Rb3?
- Keys
- 1.Qh1!
- threat
- 2.Sd2#
- 2.Sg5#
- 1...Qd2+
- 2.Sxd2#
- 1...Qxf3
- 2.Qxf3#
- 1...Sxe3
- 2.Rd4#
- 1...Sxf4
- 2.Rb4#
- 1...Sb6
- 2.Re7#
- 1...Qg5
- 2.Sd2#
- 2.Sxg5#
- 1...Sc3
- 2.Sg5#
- 2.Rb4#
- 2.Re7#
- 1...Sb4
- 2.Sg5#
- 2.Rxb4#
- 2.Re7#
- 1...Sf6
- 2.Sg5#
- 2.Rb4#
- 2.Re7#
- 1...Sc7
- 2.Sg5#
- 2.Rb4#
- 1...Se7
- 2.Sg5#
- 2.Rb4#
- 2.Rxe7#
- 1...f6
- 2.Sd2#
- 1...g5
- 2.Sd2#
- 2.Sxg5#
- threat
- 1.Qh1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 11
- Sets
- Q(a);N_GUARD::S(D)
- Q(a);CHECK,N_GUARD::S(D),XQ(a)
- S(d);SBLOCK,XP(C)::R1(A)
- S(d);N_GUARD,XP(E)::R(H)
- S(d);N_GUARD::R(H)
- Tries
- Try
- R(H);
- Threat
- R1(A)
- Vars
- Q(a);CHECK,N_GUARD::S(D),XQ(a)
- Q(a);N_GUARD::S(D)
- S(d);N_GUARD::R(H)
- Refutation
- B(b);XR(H)
- Try
- Q(I);XP(g)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::S(D),XQ(a)
- Q(a);N_GUARD,XQ(I)::S(D)
- Q(a);N_GUARD::S(D)
- Refutation
- P(f);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,N_GUARD::S(D),XQ(a)
- S(d);::QAB(I)+R(H),DCHECK
- Q(a);N_GUARD::S(D)
- B(b);::R(H)
- Refutation
- B(b);
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- Q(a);CHECK,N_GUARD::S(D),XQ(a)
- Q(a);N_GUARD::S(D)
- S(d);N_GUARD::R(H)
- Refutation
- P(f);
- Try
- Q(I);CHECK
- Refutation
- B(b);XQ(I)
- Try
- Actual
- Q(I);
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK::QAB(I)+S(D),DCHECK,XQ(a)
- Q(a);OGATE,P_SPINQ(a),XS(D)::QAB1(I),XQ(a)
- S(d);SBLOCK,XP(C)::R1(A)
- S(d);N_GUARD,XP(E)::R(H)
- S(d);N_GUARD::R(H)
- P(f);::S(D)
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