MESON Chess Problem Database
Problem Display
PID: 55387 (8/3p4/5QKp/1Ppk2n1/1r1N3R/1Pp1pp2/r2N4/3R3B w - - 0 1)
Lider, Valentin Viktorovich
1st HM., Shakhmaty, 1963
#2
9 + 10
| 3747 | FIDE Album (1962-1964) | 1968 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.bxc4#
- 1...Sh3
- 2.Bxf3#
- 1...Sf7
- 2.Bxf3#
- 1...Sh7
- 2.Bxf3#
- 1...d6
- 2.Qf5#
- 1...Rc4
- Tries
- 1.Kf5?
- threat
- 2.Qe5#
- 1...Sf7
- 2.Bxf3#
- 1...d6!
- threat
- 1.Sc4?
- threat
- 2.Sxe3#
- 2.Sb6#
- 2.Sc2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Rxb3
- 2.Sxe3#
- 2.Sb6#
- 2.Sc2#
- 1...Rxb5
- 2.Sxe3#
- 2.Sc2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...cxd4
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Ra1
- 2.Sxe3#
- 2.Sb6#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Rc2
- 2.Sxe3#
- 2.Sb6#
- 2.Sxc2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Rd2
- 2.Sxe3#
- 2.Sb6#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Re2
- 2.Sb6#
- 2.Sxe2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Rf2
- 2.Sxe3#
- 2.Sb6#
- 2.Se2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Rg2
- 2.Sxe3#
- 2.Sb6#
- 2.Se2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Rh2
- 2.Sxe3#
- 2.Sb6#
- 2.Se2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...Ra6
- 2.Sxe3#
- 2.Sc2#
- 2.Se2#
- 2.Sxf3#
- 2.Sf5#
- 2.Sc6#
- 2.Se6#
- 1...Se4
- 2.Sxe3#
- 2.Sb6#
- 2.Qe5#
- 2.Qf5#
- 2.Qf7#
- 1...Se6
- 2.Bxf3#
- 2.Qe5#
- 2.Qxf3#
- 2.Qf5#
- 1...Sf7
- 2.Sxe3#
- 2.Sb6#
- 2.Sc2#
- 2.Bxf3#
- 2.Qxf3#
- 2.Qxf7#
- 1...c2
- 2.Sxe3#
- 2.Sb6#
- 2.Sxc2#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...e2
- 2.Se3#
- 2.Sb6#
- 2.Qe5#
- 2.Qf5#
- 2.Qd6#
- 1...d6
- 2.Sxe3#
- 2.Sb6#
- 2.Sc2#
- 2.Qf5#
- 2.Qxd6#
- 1...Rxc4!
- threat
- 1.S4xf3?
- threat
- 2.Qe5#
- 1...Rxb5
- 2.Sxg5#
- 1...Sxf3
- 2.Rh5#
- 1...Ra6
- 2.Sc4#
- 1...Sf7
- 2.Sd4#
- 1...d6
- 2.Qf5#
- 1...Re4!
- threat
- 1.Sf5?
- threat
- 2.Sxe3#
- 2.Se7#
- 2.Qd6#
- 1...exd2
- 2.Se3#
- 2.Se7#
- 2.Qd6#
- 1...c4
- 2.Qd6#
- 1...Ra6
- 2.Sc4#
- 2.Sxe3#
- 2.Se7#
- 1...Re4
- 2.Qd6#
- 1...Se4
- 2.Sxe3#
- 2.Se7#
- 1...Sf7
- 2.Sxe3#
- 2.Se7#
- 1...e2
- 2.Se3#
- 2.Se7#
- 2.Qd6#
- 1...d6
- 2.Sxe3#
- 2.Se7#
- 2.Qxd6#
- 1...Se6!
- threat
- 1.Bxf3+?
- 1...Se4
- 2.Bxe4#
- 2.Rh5#
- 1...Sxf3!
- 1...Se4
- 1.Kf5?
- Keys
- 1.S2xf3!
- threat
- 2.Qe5#
- 1...Rxb3
- 2.Sc2#
- 1...Sxf3
- 2.Bxf3#
- 1...Ra6
- 2.Sxg5#
- 1...Sf7
- 2.Sd2#
- 1...d6
- 2.Qf5#
- threat
- 1.S2xf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(e);OGATE::P(D),XR(e)
- S(h);N_GUARD::B(B),XP(d)
- P(j);SBLOCK::QAR2(H)
- Tries
- Try
- K(I);S_FLIGHT
- Threat
- QAR1(H)
- Vars
- S(h);N_GUARD::B(B),XP(d)
- Refutation
- P(j);
- Try
- S(C);
- Threat
- DUALS(6)
- Refutation
- R(e);XS(C)
- Try
- S(E);XP(d)
- Threat
- QAR1(H)
- Vars
- R(e);N_GUARD,XP(G)::B(B)+S(E),XS(h)
- S(h);OGATEB,P_SPINS(h),XS(E)::R(F)
- R(a);N_GUARD,P_PINQ(H)::R(A)+S(C)
- S(h);N_GUARD::B(B)+S(E)
- P(j);SBLOCK::QAR2(H)
- Refutation
- R(e);
- Try
- S(E);
- Threat
- DUALS(3)
- Vars
- P(f);::QAR1(H)
- R(e);N_SPINP(d)::QAR1(H)
- Refutation
- S(h);
- Try
- B(B);CHECK,XP(d)
- Refutation
- S(h);XB(B)
- Try
- Actual
- S(C);XP(d)
- Threat
- QAR1(H)
- Vars
- R(e);N_GUARD,XP(D)::R(A)+S(E)
- S(h);OGATE,P_SPINS(h),XS(C)::B(B),XS(h)
- R(a);N_GUARD,P_PINQ(H)::B(B)+S(C),XS(h)
- S(h);N_GUARD::B(B)+S(C)
- P(j);SBLOCK::QAR2(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).