MESON Chess Problem Database
Problem Display
PID: 18894 (1Q6/3KB1pB/1p1N3p/4k3/1R3Np1/3q2r1/8/3Rr3 w - - 0 1)
Loshinski, Lev Ilich
1st Prize, Chigorin MT, 1959
#2
8 + 8
| 5862 | An ABC of Chess Problems | 1970 |
| 3713 | Snap | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qf1
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qc2
- 2.Sc4#
- 2.Sf7#
- 2.Rd5#
- 1...Qe2
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qc4
- 2.Sg6#
- 2.Sxc4#
- 2.Sf7#
- 1...Qe4
- 2.Sc4#
- 2.Sxe4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qb5+
- 2.Sxb5#
- 1...Qf5+
- 2.Sxf5#
- 1...Qa6
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qg6
- 2.Sxg6#
- 2.Rd5#
- 1...Qxh7
- 2.Rd5#
- 1...Qa3
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qb3
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qc3
- 2.Sg6#
- 2.Sc4#
- 2.Sf7#
- 2.Rd5#
- 1...Qe3
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Qf3
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qd5
- 2.Sg6#
- 2.Rxd5#
- 1...Qxd6+
- 2.Qxd6#
- 1...g5
- 2.Qh8#
- 1...g6
- 2.Qh8#
- 1...Qb1
- Tries
- 1.Kc8?
- threat
- 2.Sf7#
- 1...Qc2+
- 2.Sc4#
- 1...Qc4+
- 2.Sxc4#
- 1...Qf5+
- 2.Sxf5#
- 1...Qa6+
- 2.Sb7#
- 1...Qc3+
- 2.Sc4#
- 1...Qxh7
- 2.Rd5#
- 1...Qxd6
- 2.Rd5#
- 2.Qxd6#
- 1...Qg6
- 2.Rd5#
- 1...g6!
- threat
- 1.Sxd3+?
- 1...Kd5
- 2.Qb7#
- 2.Qa8#
- 1...Rxd3!
- 1...Kd5
- 1.Bg5?
- threat
- 2.Qe8#
- 1...Qb5+
- 2.Sxb5#
- 2.Rxb5#
- 1...Qf5+
- 2.Sxf5#
- 1...Qxd6+
- 2.Qxd6#
- 1...Qc4
- 2.Sg6#
- 2.Sxc4#
- 2.Sf7#
- 1...Qg6
- 2.Sxg6#
- 2.Rd5#
- 2.Rb5#
- 1...Qb3
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qd5
- 2.Sg6#
- 2.Rxd5#
- 1...hxg5!
- threat
- 1.Bf6+?
- 1...gxf6
- 2.Qe8#
- 1...Kxf6!
- 1...gxf6
- 1.Bxd3?
- threat
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Re4
- 2.Rxe4#
- 1...b5
- 2.Sxb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Qxb5#
- 1...Rxd3!
- threat
- 1.Rxe1+?
- 1...Qe2
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qe4
- 2.Sxe4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rexe4#
- 2.Rbxe4#
- 1...Qe3
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Re3!
- 1...Qe2
- 1.Rxd3?
- threat
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 1...Re4
- 2.Sg6#
- 2.Sc4#
- 2.Sxe4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rxe4#
- 1...g6
- 2.Sxg6#
- 2.Rd5#
- 2.Qh8#
- 1...Rc1
- 2.Sg6#
- 2.Sc4#
- 2.Sf7#
- 2.Rd5#
- 2.Re4#
- 1...Rd1
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Re4#
- 1...b5
- 2.Sg6#
- 2.Sc4#
- 2.Se4#
- 2.Sxb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 2.Rd5#
- 2.Qxb5#
- 1...Rxd3!
- threat
- 1.Re4+?
- 1...Qxe4
- 2.Sc4#
- 2.Sxe4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Rxe4!
- 1...Qxe4
- 1.Qf8?
- threat
- 2.Qxg7#
- 1...Qb5+
- 2.Rxb5#
- 1...Qf5+
- 2.Qxf5#
- 1...Qxd6+
- 2.Bxd6#
- 1...Qxh7
- 2.Rd5#
- 2.Rb5#
- 1...g6
- 2.Bf6#
- 2.Qg7#
- 2.Qf6#
- 2.Qh8#
- 1...Qc4
- 2.Sg6#
- 2.Sxc4#
- 2.Qf5#
- 1...Qg6
- 2.Sxg6#
- 2.Rd5#
- 2.Rb5#
- 1...Qd4
- 2.Qf5#
- 1...Re4
- 2.Qf5#
- 1...g5
- 2.Bf6#
- 2.Qg7#
- 2.Qf6#
- 2.Qh8#
- 1...Qe4!
- threat
- 1.Kc8?
- Keys
- 1.Kc6!
- threat
- 2.Sf7#
- 1...Qc2+
- 2.Sc4#
- 1...Qc4+
- 2.Sxc4#
- 1...Qe4+
- 2.Sxe4#
- 1...Qb5+
- 2.Sxb5#
- 1...Qc3+
- 2.Sc4#
- 1...Qf3+
- 2.Se4#
- 1...Qd5+
- 2.Rxd5#
- 1...Qxd6+
- 2.Qxd6#
- 1...Qxh7
- 2.Rd5#
- 1...Qg6
- 2.Rd5#
- 1...g6
- 2.Qh8#
- threat
- 1.Kc6!
This anticipates 225771(1991)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 2
- Sets
- Q(b);CHECK,N_PINS(D)::QAB(H)+S(D),XQ(b)
- Q(b);N_PINS(D),OGATE,XB(G)::R1(A)
- Q(b);CHECK,OGATE,P_SPINQ(b),XS(D)::QAB1(H),XQ(b)
- P(h);OGATEB::QAB(H)
- Tries
- Try
- K(E);N_SPINS(D),S_FLIGHT
- Threat
- QAB(H)+S(D),DCHECK
- Vars
- Q(b);CHECK::QAB(H)+S(D),DCHECK
- Q(b);CHECK::QAB(H)+S(D),DCHECK,XQ(b)
- Q(b);CHECK,N_GUARD::QAB(H)+S(D),XQ(b)
- Q(b);CHECK,N_GUARD::QAB(H)+S(D)
- Q(b);OGATE,XB(G)::R1(A)
- Q(b);OGATE::R1(A)
- Refutation
- P(h);
- Try
- S(C);CHECK,N_SPINS(D),XQ(b)
- Refutation
- R(c);P_PINS(D),XS(C)
- Try
- B(F);
- Threat
- QAR(H)
- Vars
- Q(b);CHECK,N_PINS(D)::QAB(H)+S(D),XQ(b)
- Q(b);CHECK,OGATE,P_SPINQ(b),XS(D)::QAB1(H),XQ(b)
- Refutation
- P(g);XB(F)
- Try
- B(F);CHECK
- Vars
- P(h);SBLOCK,XB(F)::QAR(H)
- Refutation
- K(e);S_FLIGHT,XB(F)
- Try
- B(G);N_SPINS(D),XQ(b)
- Threat
- DUALS(6)
- Vars
- R(a);N_GUARD::R1(B),XR(a)
- Refutation
- R(c);P_PINS(D),XB(G)
- Try
- R(A);CHECK,XR(a)
- Refutation
- R(c);P_SPINR(c)
- Try
- R(A);N_SPINS(D),XQ(b)
- Threat
- DUALS(10)
- Refutation
- R(c);P_PINS(D),XR(A)
- Try
- R(B);CHECK
- Refutation
- R(a);XR(B)
- Try
- Q(H);
- Threat
- QAB(H),XP(h)
- Vars
- Q(b);CHECK,N_GUARD,N_PINS(D)::R(B),XQ(b)
- Q(b);CHECK,N_GUARD,N_PINS(D)::QAR1(H),XQ(b)
- Q(b);CHECK,OGATE,XS(D)::B(F),XQ(b)
- Q(b);N_GUARD::QAR1(H)
- R(a);S_CUTQ(b)::QAR1(H)
- Refutation
- Q(b);N_PINS(D)
- Try
- Actual
- K(E);N_SPINS(D),S_FLIGHT
- Threat
- QAB(H)+S(D),DCHECK
- Vars
- Q(b);CHECK::QAB(H)+S(D),DCHECK
- Q(b);CHECK::QAB(H)+S(D),DCHECK,XQ(b)
- Q(b);CHECK,N_GUARD::QAB(H)+S(D),XQ(b)
- Q(b);CHECK,N_GUARD::QAB(H)+S(D)
- Q(b);CHECK,OGATE::R1(A),XQ(b)
- Q(b);CHECK,OGATE,P_SPINQ(b),XS(D)::QAB1(H),XQ(b)
- Q(b);OGATE,XB(G)::R1(A)
- Q(b);OGATE,P_PINS(D)::R1(A)
- P(h);OGATEB::QAB(H)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).