MESON Chess Problem Database
Problem Display
PID: 69785 (K2R4/1p1b1p2/2nn1Q2/3k2N1/R2P1p2/2pB4/N6B/4q3 w - - 0 1)
Lacny, Ludovit
Hlas l'udu, 1977
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Sxc3#
- 1...Qg3
- 2.Sxc3#
- 1...Qh4
- 2.Sxc3#
- 1...Qb1
- 2.Sxc3#
- 1...Qd1
- 2.Sxc3#
- 1...Qf1
- 2.Sxc3#
- 1...Qg1
- 2.Sxc3#
- 1...Qh1
- 2.Sxc3#
- 1...Qe2
- 2.Sxc3#
- 1...Qe3
- 2.Sxc3#
- 1...Qe4
- 2.Sxc3#
- 1...Qe5
- 2.Sxc3#
- 1...Qe6
- 2.Sxc3#
- 1...Qe7
- 2.Sxc3#
- 1...Qe8
- 2.Sxc3#
- 1...Bh3
- 2.Bc4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Bg4
- 2.Bc4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Bf5
- 2.Bc4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Be6
- 2.Bc4#
- 1...Bc8
- 2.Bc4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Be8
- 2.Bc4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Sb4
- 2.Sxb4#
- 1...Sa5
- 2.Sb4#
- 1...Sa7
- 2.Sb4#
- 1...Se7
- 2.Sb4#
- 1...Sb8
- 2.Sb4#
- 1...Sxd8
- 2.Sb4#
- 1...Sc4
- 2.Bxc4#
- 1...Se4
- 2.Bc4#
- 1...Sb5
- 2.Bc4#
- 1...Sf5
- 2.Bc4#
- 1...Sc8
- 2.Bc4#
- 1...Se8
- 2.Bc4#
- 1...f3
- 2.Qxd6#
- 1...Qf2
- Tries
- 1.Se4?
- threat
- 2.Qxd6#
- 1...Qxe4
- 2.Sxc3#
- 1...Sxe4
- 2.Bc4#
- 1...Be6
- 2.Rxd6#
- 1...Sb5
- 2.Qxf7#
- 1...Sf5
- 2.Qxf7#
- 1...Sc8
- 2.Qxf7#
- 1...Se8
- 2.Qxf7#
- 1...Sc4!
- threat
- 1.Bxf4?
- threat
- 2.Qxd6#
- 1...Qe5
- 2.Sxc3#
- 1...Qe6
- 2.Sxc3#
- 1...Qe7
- 2.Sxc3#
- 1...Be6
- 2.Bc4#
- 2.Rxd6#
- 1...Sc4
- 2.Bxc4#
- 1...Se4
- 2.Bc4#
- 2.Qxf7#
- 1...Sb5
- 2.Bc4#
- 1...Sf5
- 2.Bc4#
- 1...Sc8
- 2.Bc4#
- 1...Se8
- 2.Bc4#
- 1...Se5!
- threat
- 1.Be4+?
- 1...Qxe4
- 2.Sxc3#
- 1...Sxe4!
- 1...Qxe4
- 1.Ra5+?
- 1...Sxa5
- 2.Sb4#
- 1...Sb5
- 2.Rxb5#
- 2.Rxd7#
- 1...b5!
- 1...Sxa5
- 1.Rxd7?
- threat
- 2.Bc4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Sxd4
- 2.Qxd6#
- 1...Sb4
- 2.Sxb4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Sa5
- 2.Sb4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Se5
- 2.Rxd6#
- 2.Qxd6#
- 1...Sa7
- 2.Sb4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Se7
- 2.Sb4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Sb8
- 2.Sb4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Sd8
- 2.Sb4#
- 2.Rxd6#
- 2.Qxd6#
- 1...Qf1
- 2.Sxc3#
- 2.Be4#
- 2.Rxd6#
- 2.Qxd6#
- 2.Qxf7#
- 1...Qe2
- 2.Sxc3#
- 2.Rxd6#
- 2.Qxd6#
- 1...Qe5
- 2.Sxc3#
- 1...Qe6
- 2.Sxc3#
- 2.Bc4#
- 1...Qe7
- 2.Sxc3#
- 2.Bc4#
- 1...b5
- 2.Rxd6#
- 2.Qxd6#
- 1...Qe8+!
- threat
- 1.Qe5+?
- 1...Qxe5
- 2.Sxc3#
- 1...Sxe5!
- 1...Qxe5
- 1.Se4?
- Keys
- 1.Qxf4!
- threat
- 2.Qxd6#
- 1...Se5
- 2.Sb4#
- 1...Qg3
- 2.Sxc3#
- 1...Qe5
- 2.Sxc3#
- 1...Qe6
- 2.Sxc3#
- 1...Qe7
- 2.Sxc3#
- 1...Sc4
- 2.Bxc4#
- 1...Se4
- 2.Qxf7#
- 1...Sb5
- 2.Bc4#
- 1...Sf5
- 2.Bc4#
- 1...Sc8
- 2.Bc4#
- 1...Se8
- 2.Bc4#
- threat
- 1.Qxf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 19
- Sets
- Q(a);N_GUARD::S(A),XP(b)
- Q(a);N_GUARD,P_PINR(I)::S(A),XP(b)
- B(h);P_SPINS(f)::B(C)
- S(e);N_GUARD::S(A),XS(e)
- S(e);N_GUARD::S(A)
- S(e);N_GUARD,XR(I)::S(A)
- S(f);N_GUARD,P_SPINB(h)::B(C),XS(f)
- S(f);N_GUARD,P_SPINB(h)::B(C)
- P(c);::QAR1(G),XS(f)
- Tries
- Try
- S(F);
- Threat
- QAR1(G),XS(f)
- Vars
- Q(a);N_GUARD,XS(F)::S(A),XP(b)
- S(f);N_GUARD,P_SPINB(h),SBLOCK,XS(F)::B(C)
- B(h);OGATE,P_SPINS(f)::R1(I),XS(f)
- S(f);N_GUARD,P_SPINB(h)::QAB(G),XP(i)
- Refutation
- S(f);P_SPINB(h)
- Try
- B(B);XP(c)
- Threat
- QAR1(G),XS(f)
- Vars
- Q(a);N_GUARD::S(A),XP(b)
- S(f);N_GUARD,P_SPINB(h)::B(C),XS(f)
- S(f);N_GUARD,P_SPINB(h)::B(C)
- Refutation
- S(e);
- Try
- B(C);CHECK
- Vars
- Q(a);XB(C)::S(A),XP(b)
- Refutation
- S(f);P_SPINB(h),XB(C)
- Try
- R(D);CHECK
- Vars
- S(e);XR(D)::S(A)
- Refutation
- P(g);P_SPINP(g)
- Try
- R(I);P_PINS(f),XB(h)
- Threat
- DUALS(3)
- Vars
- S(e);XP(E)::QAR1(G),XS(f)
- Q(a);N_GUARD::S(A),XP(b)
- Refutation
- Q(a);CHECK
- Try
- Q(G);CHECK
- Vars
- Q(a);XQ(G)::S(A),XP(b)
- Refutation
- S(e);XQ(G)
- Try
- Actual
- Q(G);XP(c)
- Threat
- QAR1(G),XS(f)
- Vars
- S(e);N_GUARD::S(A)
- Q(a);N_GUARD::S(A),XP(b)
- S(f);N_GUARD,P_SPINB(h)::B(C),XS(f)
- S(f);N_GUARD,P_SPINB(h),S_CUTQ(a)::QAB(G),XP(i)
- S(f);N_GUARD,P_SPINB(h)::B(C)
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).