MESON Chess Problem Database
Problem Display
PID: 69769 (8/K6P/B1p1R3/p4bRp/3kN2r/Q5B1/2r1p1pn/b1n1N1q1 w - - 0 1)
Lacny, Ludovit
1st Prize, Pravda TT, 1969
#2
9 + 13
SOLUTION
- SOUND
- Sets
- 1...Qe3
- 2.Qd6#
- 1...Ra2
- 2.Qc5#
- 1...Rb2
- 2.Qc5#
- 1...Rd2
- 2.Qc5#
- 1...Rc5
- 2.Qxc5#
- 1...Rxe4
- 2.Rd6#
- 1...Bc3
- 2.Qc5#
- 1...Bh3
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Bxe4
- 2.h8Q#
- 2.h8B#
- 1...Bg4
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Bg6
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Bxh7
- 2.Sxc2#
- 1...Sa2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 1...Qe3
- Tries
- 1.Bf2+?
- 1...Kd5
- 2.Qd6#
- 1...Qxf2!
- 1...Kd5
- 1.Rxf5?
- threat
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Qxe1
- 2.h8Q#
- 2.h8B#
- 1...Rxe4
- 2.Sxc2#
- 2.Rd6#
- 1...Bc3
- 2.Sxc2#
- 2.Qc5#
- 1...Sb3
- 2.Sxc2#
- 1...Sd3
- 2.Sxc2#
- 2.Qxd3#
- 1...Qf2
- 2.Sxc2#
- 2.Bxf2#
- 2.h8Q#
- 2.h8B#
- 1...Qe3
- 2.Sxc2#
- 2.Qd6#
- 2.h8Q#
- 2.h8B#
- 1...Qf1
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Qh1
- 2.Sxc2#
- 2.Bf2#
- 2.h8Q#
- 2.h8B#
- 1...Ra2
- 2.Qc5#
- 2.h8Q#
- 2.h8B#
- 1...Rb2
- 2.Qc5#
- 2.Qc3#
- 2.h8Q#
- 2.h8B#
- 1...Rd2
- 2.Qc5#
- 2.h8Q#
- 2.h8B#
- 1...Rc4
- 2.h8Q#
- 2.h8B#
- 1...Rc5
- 2.Qxc5#
- 1...Rh3
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Rf4
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Rg4
- 2.Sxc2#
- 1...Bb2
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Sa2
- 2.Sxc2#
- 2.Qd3#
- 2.h8Q#
- 2.h8B#
- 1...Sf1
- 2.Sxc2#
- 2.Sf3#
- 2.h8Q#
- 2.h8B#
- 1...Sf3
- 2.Sxc2#
- 2.Sxf3#
- 1...Sg4
- 2.Sxc2#
- 2.Sf3#
- 1...a4
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...c5
- 2.Sxc2#
- 2.h8Q#
- 2.h8B#
- 1...Rc3!
- threat
- 1.Bf2+?
- Keys
- 1.Sc3!
- threat
- 2.h8Q#
- 2.h8B#
- 1...Qxe1
- 2.h8Q#
- 2.h8B#
- 1...Rxc3
- 2.Qd6#
- 1...Bxc3
- 2.Qd6#
- 1...Bxe6
- 2.Sxc2#
- 2.Qc5#
- 1...Bxh7
- 2.Qc5#
- 1...Re4
- 2.Sxc2#
- 1...Be4
- 2.Qc5#
- 1...Sb3
- 2.h8Q#
- 2.h8B#
- 1...Qf2
- 2.Bxf2#
- 2.h8Q#
- 2.h8B#
- 1...Qe3
- 2.Rd6#
- 1...Qf1
- 2.h8Q#
- 2.h8B#
- 1...Qh1
- 2.Bf2#
- 2.h8Q#
- 2.h8B#
- 1...Ra2
- 2.h8Q#
- 2.h8B#
- 1...Rb2
- 2.h8Q#
- 2.h8B#
- 1...Rd2
- 2.h8Q#
- 2.h8B#
- 1...Rh3
- 2.h8Q#
- 2.h8B#
- 1...Rf4
- 2.h8Q#
- 2.h8B#
- 1...Rg4
- 2.h8Q#
- 2.h8B#
- 1...Bb2
- 2.h8Q#
- 2.h8B#
- 1...Bd3
- 2.Qc5#
- 2.h8Q#
- 2.h8B#
- 1...Bh3
- 2.Sxc2#
- 2.Qc5#
- 2.h8Q#
- 2.h8B#
- 1...Bg4
- 2.Sxc2#
- 2.Re4#
- 2.Qc5#
- 2.h8Q#
- 2.h8B#
- 1...Bg6
- 2.Qc5#
- 2.h8Q#
- 2.h8B#
- 1...Sa2
- 2.h8Q#
- 2.h8B#
- 1...Sd3
- 2.Sxc2#
- 1...Sf1
- 2.Sf3#
- 2.h8Q#
- 2.h8B#
- 1...Sf3
- 2.Sxf3#
- 1...Sg4
- 2.Sf3#
- 1...a4
- 2.Qb4#
- 2.h8Q#
- 2.h8B#
- 1...c5
- 2.h8Q#
- 2.h8B#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 4
- REMOVED MATES = 5
- Sets
- Q(c);SBLOCK::QAR2(B)
- R(d);N_GUARD::QAB1(B)
- R(d);N_GUARD::QAB1(B),XR(d)
- R(i);SBLOCK,XS(D)::R(G)
- B(a);S_CUTR(d)::QAB1(B)
- B(k);XS(D)::P=Q
- B(k);XP(I)::S(A),XR(d)
- S(b);N_GUARD::QAR1(B)
- S(b);N_GUARD::QAR1(B),XS(b)
- Tries
- Try
- B(C);CHECK
- Vars
- K(h);P-FLIGHT,P_PINB(C),P_SPINB(k)::QAR1(B)
- Refutation
- Q(c);XB(C)
- Try
- R(E);XB(k)
- Threat
- DUALS(3)
- Vars
- Q(c);XS(A)::P=Q
- S(b);::S(A),XR(d)
- R(d);::P=Q
- R(d);N_GUARD::QAB1(B),XR(d)
- R(i);::S(A),XR(d)
- Refutation
- R(d);
- Try
- Actual
- S(D);
- Threat
- P=Q
- Vars
- Q(c);XS(A)::P=Q
- R(d);SBLOCK,XS(D)::QAR2(B)
- B(a);SBLOCK,XS(D)::QAR2(B)
- B(k);XP(I)::QAB1(B)
- R(i);S_CUTB(k)::S(A),XR(d)
- B(k);::QAB1(B)
- S(b);::P=Q
- Q(c);SBLOCK::R(G)
- Q(c);::P=Q
- R(d);::P=Q
- R(i);::P=Q
- B(a);::P=Q
- S(b);S_CUTB(k)::S(A),XR(d)
- S(g);N_GUARD::S(A),XS(g)
- S(g);N_GUARD::S(A)
- P(m);::P=Q
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).