MESON Chess Problem Database
Problem Display
PID: 141480 (5Q2/2r1B3/1pp1B3/2PPnP2/1RNkp3/1p1N2r1/bP6/K2R2n1 w - - 0 1)
Lobusov, Andrey Jakovlevic
Probleemblad, 1976
#2
12 + 10
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.Scxe5#
- 1...Rg4
- 2.Sdxe5#
- 1...Rg5
- 2.Sdxe5#
- 1...Rg6
- 2.Sdxe5#
- 1...Rg7
- 2.Sdxe5#
- 1...Rg8
- 2.Sdxe5#
- 1...Sxd3
- 2.Bf6#
- 2.Qf6#
- 1...e3
- 2.Scxe5#
- 1...bxc5
- 2.Bxc5#
- 1...Re3
- Tries
- 1.Sc1+?
- 1...Sd3
- 2.Bf6#
- 2.Qf6#
- 1...Rd3!
- 1...Sd3
- 1.Se1+?
- 1...Sd3
- 2.Bf6#
- 2.Qf6#
- 1...Rd3!
- 1...Sd3
- 1.Sf2+?
- 1...Sd3
- 2.Bf6#
- 2.Qf6#
- 1...Rd3!
- 1...Sd3
- 1.Sf4+?
- 1...Sd3
- 2.Bf6#
- 2.Qf6#
- 1...Rd3!
- 1...Sd3
- 1.Bg5?
- threat
- 2.Scxe5#
- 1...Rxd3
- 2.Be3#
- 1...Rxg5
- 2.Sdxe5#
- 1...Sxd3
- 2.Bf6#
- 1...Sxc4
- 2.Qf6#
- 1...bxc5
- 2.Qxc5#
- 1...Sef3
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 2.Be3#
- 1...Sg4
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 1...Sg6
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 1...Sd7
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 1...Sf7
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 1...exd3!
- threat
- 1.Qg7?
- threat
- 2.Qxe5#
- 1...Rxg7
- 2.Sdxe5#
- 1...Sf3!
- threat
- 1.Qh8?
- threat
- 2.Qxe5#
- 1...Rg7
- 2.Sdxe5#
- 1...Sf3!
- threat
- 1.Sc1+?
- Keys
- 1.Qh6!
- threat
- 2.Scxe5#
- 1...Rxd3
- 2.Qe3#
- 1...Sxd3
- 2.Qf6#
- 1...Sxc4
- 2.Bf6#
- 1...exd3
- 2.Qf4#
- 1...bxc5
- 2.Bxc5#
- 1...Rg5
- 2.Sdxe5#
- 1...Sef3
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 2.Qe3#
- 1...Sg4
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 1...Sg6
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 1...Sd7
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- 1...Sf7
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sce5#
- 2.Sxb6#
- 2.Sd6#
- threat
- 1.Qh6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(d);SBLOCK::R(E)+S(F),XS(g)
- R(d);N_GUARD::R(B)+S(D),XS(g)
- P(f);SBLOCK::R(E)+S(F),XS(g)
- P(h);OGATE,XP(G)::B(K),XP(h)
- Tries
- Try
- S(D);CHECK
- Refutation
- R(d);P_SPINR(d)
- Try
- S(D);CHECK
- Refutation
- R(d);P_SPINR(d)
- Try
- S(D);CHECK
- Refutation
- R(d);P_SPINR(d)
- Try
- S(D);CHECK
- Refutation
- R(d);P_SPINR(d)
- Try
- B(K);
- Threat
- R(E)+S(F),XS(g)
- Vars
- R(d);N_GUARD,P_SPINR(d),XS(D)::B(K)
- R(d);N_GUARD,XB(K)::R(B)+S(D),XS(g)
- S(g);OGATEB,P_SPINS(g),XS(D)::B(K)
- S(g);OGATEB,P_SPINS(g),XS(F)::QAB(L)
- P(h);OGATE,XP(G)::QAB1(L),XP(h)
- Refutation
- P(f);P_SPINP(f),XS(D)
- Try
- Q(L);P_PINS(g)
- Threat
- QAB1(L),XS(g)
- Vars
- R(d);N_GUARD,N_SPINS(g),XQ(L)::R(B)+S(D),XS(g)
- Refutation
- S(a);
- Try
- Q(L);P_PINS(g)
- Threat
- QAB1(L),XS(g)
- Vars
- R(d);N_GUARD,N_SPINS(g)::R(B)+S(D),XS(g)
- Refutation
- S(a);
- Try
- Actual
- Q(L);
- Threat
- R(E)+S(F),XS(g)
- Vars
- R(d);N_GUARD,P_SPINR(d),XS(D)::QAB1(L)
- S(g);OGATEB,P_SPINS(g),XS(D)::QAB(L)
- S(g);OGATEB,P_SPINS(g),XS(F)::B(K)
- P(f);OGATEB,P_SPINP(f),XS(D)::QAR2(L)
- P(h);OGATE,XP(G)::B(K),XP(h)
- R(d);N_GUARD::R(B)+S(D),XS(g)
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).