MESON Chess Problem Database
Problem Display
PID: 45254 (KN1b1n2/n1k1r2R/1NP2p2/1pP2P2/2p2R2/4Q3/1q5B/8 w - - 0 1)
Zagoruyko, Leonid Ivanovich
2nd Prize, Latvian Championship, 1958
#2
10 + 9
| 3976 | FIDE Album (1956-1958) | 1961 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Rd4#
- 1...Qc1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rxc4#
- 2.Rd4#
- 2.Re4#
- 2.Rg4#
- 2.Rfh4#
- 1...Qa3
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rxc4#
- 2.Rd4#
- 2.Re4#
- 2.Rg4#
- 2.Rfh4#
- 1...Qc3
- 2.Rd4#
- 1...Qd4
- 2.Rxd4#
- 1...Qb1
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rxc4#
- 2.Rd4#
- 2.Re4#
- 2.Rg4#
- 2.Rfh4#
- 1...Qa2
- 2.Rf2#
- 1...Qc2
- 2.Rf2#
- 1...Qe2
- 2.Rf2#
- 1...Qf2
- 2.Rxf2#
- 1...Qb3
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rxc4#
- 2.Rd4#
- 2.Re4#
- 2.Rg4#
- 2.Rfh4#
- 1...Qb4
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rxc4#
- 2.Rd4#
- 2.Re4#
- 2.Rg4#
- 2.Rfh4#
- 1...Sxc6
- 2.Sa6#
- 1...Sc8
- 2.Sd5#
- 1...c3
- 2.Rf2#
- 1...Qa1
- Tries
- 1.Rxe7+?
- 1...Sd7
- 2.Rxd7#
- 1...Bxe7!
- 1...Sd7
- 1.Qd4?
- threat
- 2.Rf2#
- 2.Qd6#
- 1...Qxd4
- 2.Rxd4#
- 1...Qxh2
- 2.Qd6#
- 1...Rxh7
- 2.Qd6#
- 1...Sxc6
- 2.Sa6#
- 2.Qd6#
- 1...Sxh7
- 2.Qd6#
- 1...Qc1
- 2.Qd6#
- 1...Qa3
- 2.Rf3#
- 2.Qd6#
- 1...Qc3
- 2.Rf3#
- 2.Qd6#
- 1...Qe2
- 2.Qd6#
- 1...Qf2
- 2.Rxf2#
- 2.Qd6#
- 1...Qg2
- 2.Qd6#
- 1...Qb3
- 2.Rf3#
- 2.Qd6#
- 1...Sc8
- 2.Sd5#
- 1...Se6
- 2.Qd6#
- 1...Sg6
- 2.Qd6#
- 1...Sd7
- 2.Qd6#
- 1...Qd2!
- threat
- 1.Qf3?
- threat
- 2.Sa6#
- 1...Qa1
- 2.Rd4#
- 1...Qa3
- 2.Rxc4#
- 2.Rd4#
- 2.Re4#
- 2.Rg4#
- 2.Rfh4#
- 1...Qa2!
- threat
- 1.Qe4?
- threat
- 2.Sa6#
- 1...Qa3
- 2.Rf3#
- 1...Qa2
- 2.Rf2#
- 1...Qa1!
- threat
- 1.Qe6?
- threat
- 2.Sd5#
- 2.Sa6#
- 2.Qd6#
- 1...Qe5
- 2.Sa6#
- 1...Qa1
- 2.Sd5#
- 2.Rd4#
- 2.Qd6#
- 1...Qa3
- 2.Sd5#
- 2.Rf3#
- 2.Qd6#
- 1...Qd4
- 2.Sa6#
- 2.Rxd4#
- 1...Qa2
- 2.Sd5#
- 2.Rf2#
- 2.Qd6#
- 1...Qd2
- 2.Sa6#
- 1...Qg2
- 2.Sa6#
- 2.Qd6#
- 1...Rd7
- 2.Sa6#
- 2.Qd6#
- 1...Sc8
- 2.Sd5#
- 2.Sa6#
- 2.Qxc8#
- 1...Sd7
- 2.Sa6#
- 2.Qd6#
- 1...Sxe6!
- threat
- 1.Qxe7+?
- 1...Sd7
- 2.Qd6#
- 2.Qxd7#
- 1...Bxe7!
- 1...Sd7
- 1.Rxe7+?
- Keys
- 1.Qa3!
- threat
- 2.Qxa7#
- 1...Qxa3
- 2.Rf3#
- 1...Sxc6
- 2.Sa6#
- 1...Qa1
- 2.Rd4#
- 1...Qa2
- 2.Rf2#
- 1...Sc8
- 2.Sd5#
- threat
- 1.Qa3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 6
- Sets
- Q(a);N_GUARD::B(A)+R(C)
- Q(a);N_GUARD::B(A)+R(C),XQ(a)
- S(e);SBLOCK,XP(G)::S(J)
- S(e);SBLOCK::S(F)
- P(b);S_CUTQ(a)::B(A)+R(C)
- Tries
- Try
- R(H);CHECK,XR(g)
- Vars
- S(i);N_GUARD,P_SPINS(i)::R1(H),XS(i)
- Refutation
- B(h);XR(H)
- Try
- Q(B);
- Threat
- DUALS(2)
- Vars
- Q(a);OGATE,XQ(B)::B(A)+R(C),XQ(a)
- Q(a);XB(A)::QAB1(B)
- R(g);N_SPINR(g),XR(H)::QAB1(B)
- S(i);N_SPINR(g),XR(H)::QAB1(B)
- Q(a);::QAB1(B)
- Q(a);P_PINP(G)::QAB1(B)
- S(e);SBLOCK::S(F)
- S(i);::QAB1(B)
- S(i);N_SPINR(g)::QAB1(B)
- Refutation
- Q(a);
- Try
- Q(B);
- Threat
- S(J)
- Vars
- Q(a);N_GUARD::B(A)+R(C)
- Refutation
- Q(a);
- Try
- Q(B);
- Threat
- S(J)
- Vars
- Q(a);N_GUARD::B(A)+R(C)
- Refutation
- Q(a);
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- Q(a);::S(J)
- Refutation
- S(i);XQ(B)
- Try
- Q(B);CHECK,XR(g)
- Refutation
- B(h);P_SPINB(h),XQ(B)
- Try
- Actual
- Q(B);
- Threat
- QAR2(B),XS(e)
- Vars
- Q(a);N_GUARD,XQ(B)::B(A)+R(C)
- S(e);SBLOCK,XP(G)::S(J)
- Q(a);N_GUARD::B(A)+R(C)
- S(e);SBLOCK::S(F)
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