MESON Chess Problem Database
Problem Display
PID: 69331 (4Q1K1/8/3P3B/R4N1p/B1n2rkn/R4NPp/7P/8 w - - 0 1)
Livshits, Eduard Yakovlevich
Rudenko, Valentin Fedorovich
1st Prize, Zvezda, 1959
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Re4
- 2.Qxe4#
- 1...Sg2
- 2.Qg6#
- 1...Sxf5
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Re4
- Tries
- 1.S3xh4?
- threat
- 2.Qg6#
- 1...Se5
- 2.Se3#
- 1...Rxf5!
- threat
- 1.Se3+?
- 1...Sxe3
- 2.Qxh5#
- 1...Kxf3!
- 1...Sxe3
- 1.Bd1?
- 1...Rxf3
- 2.Qe4#
- 1...Rxf5
- 2.Se5#
- 1...Sxa3
- 2.Se3#
- 1...Sxa5
- 2.Se3#
- 1...Sxd6
- 2.Se3#
- 1...Sxf3
- 2.Qg6#
- 1...Sxf5
- 2.Se5#
- 2.Qg6#
- 1...Se5
- 2.Se3#
- 1...Re4
- 2.Qxe4#
- 1...Sb2
- 2.Se3#
- 1...Sd2
- 2.Se3#
- 1...Se3
- 2.Sxe3#
- 1...Sb6
- 2.Se3#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Rd4!
- 1...Rxf3
- 1.Qe6?
- 1...Rxf3
- 2.Se3#
- 1...Sxa3
- 2.Se5#
- 1...Sxa5
- 2.Se5#
- 1...Sxd6
- 2.Se5#
- 1...Sxf3
- 2.Se3#
- 1...Sxf5
- 2.Qg6#
- 1...Se3
- 2.Se5#
- 1...Rd4
- 2.S5xh4#
- 1...Re4
- 2.Qxe4#
- 1...Sb2
- 2.Se5#
- 1...Sd2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sb6
- 2.Se5#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Rxf5!
- 1...Rxf3
- 1.S3xh4?
- Keys
- 1.Bd7!
- 1...Rxf3
- 2.Se3#
- 1...Rxf5
- 2.Qe4#
- 1...Sxa3
- 2.Se5#
- 1...Sxa5
- 2.Se5#
- 1...Sxd6
- 2.Se5#
- 1...Sxf3
- 2.Se3#
- 1...Sxf5
- 2.Qg6#
- 1...Se3
- 2.Se5#
- 1...Rd4
- 2.S5xh4#
- 1...Re4
- 2.Qxe4#
- 1...Sb2
- 2.Se5#
- 1...Sd2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sb6
- 2.Se5#
- 1...Sg2
- 2.Qg6#
- 1...Sg6
- 2.Qxg6#
- 1...Rxf3
- 1.Bd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 0
- Sets
- R(c);OGATEB::QAR2(J),XR(c)
- S(e);N_GUARD::QAR2(J)
- S(e);N_GUARD,XS(G)::QAR2(J)
- S(e);N_GUARD::QAR2(J),XS(e)
- Tries
- Try
- S(C);XS(e)
- Threat
- QAR2(J)
- Vars
- S(b);N_GUARD::S(G)
- Refutation
- R(c);XS(G)
- Try
- S(G);CHECK
- Vars
- S(b);XS(G)::QAB1(J),XP(f)
- Refutation
- K(d);S_FLIGHT,XS(C)
- Try
- B(E);
- Vars
- R(c);OGATEB,P_SPINR(c),XS(C)::QAR2(J)
- R(c);SBLOCK,XS(G)::B(E)+S(C),DCHECK
- S(b);N_GUARD,XR(B)::S(G)
- S(b);N_GUARD,XR(F)::S(G)
- S(b);N_GUARD,XP(H)::S(G)
- S(e);N_GUARD,P_SPINS(e),XS(C)::QAR2(J)
- S(b);N_GUARD::S(G)
- R(c);OGATEB::QAR2(J),XR(c)
- S(b);N_GUARD::S(G),XS(b)
- S(e);N_GUARD::QAR2(J)
- S(e);N_GUARD::QAR2(J),XS(e)
- Refutation
- R(c);
- Try
- Q(J);
- Vars
- R(c);SBLOCK,XS(C)::QAB(J)+S(G),DCHECK
- S(b);N_GUARD,XR(B)::S(C)
- S(b);N_GUARD,XR(F)::S(C)
- S(b);N_GUARD,XP(H)::S(C)
- S(e);SBLOCK,XS(C)::QAB(J)+S(G),DCHECK
- S(e);N_GUARD,P_SPINS(e),XS(G)::QAR2(J)
- S(b);N_GUARD::S(C)
- R(c);N_GUARD::QAB(J)+S(G),XS(e)
- R(c);OGATEB::QAR2(J),XR(c)
- S(b);N_GUARD::S(C),XS(b)
- S(e);N_GUARD::QAR2(J)
- S(e);N_GUARD::QAR2(J),XS(e)
- Refutation
- R(c);P_SPINR(c),XS(G)
- Try
- Actual
- B(E);
- Vars
- R(c);SBLOCK,XS(C)::B(E)+S(G),DCHECK
- R(c);OGATEB,P_SPINR(c),XS(G)::QAR2(J)
- S(b);N_GUARD,XR(B)::S(C)
- S(b);N_GUARD,XR(F)::S(C)
- S(b);N_GUARD,XP(H)::S(C)
- S(e);SBLOCK,XS(C)::B(E)+S(G),DCHECK
- S(e);N_GUARD,P_SPINS(e),XS(G)::QAR2(J)
- S(b);N_GUARD::S(C)
- R(c);N_GUARD::B(E)+S(G),XS(e)
- R(c);OGATEB::QAR2(J),XR(c)
- S(b);N_GUARD::S(C),XS(b)
- S(e);N_GUARD::QAR2(J)
- S(e);N_GUARD::QAR2(J),XS(e)
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).