MESON Chess Problem Database
Problem Display
PID: 71014 (4k2r/P3p2R/1B2P3/5B2/5p2/8/3pP3/KnNQ1Rnq w k - 0 1)
Lebedkin, Elisey K
Melnikov, Volodimir Grigorovich
1st Prize=, Die Schwalbe 154. TT, 1974
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qf3
- 2.Rxh8#
- 1...Qe4
- 2.Rxh8#
- 1...Qd5
- 2.Rxh8#
- 1...Qc6
- 2.Rxh8#
- 1...Qb7
- 2.Rxh8#
- 1...Qa8
- 2.Rxh8#
- 1...Qh2
- 2.a8Q#
- 2.a8R#
- 1...Qh3
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.a8Q#
- 2.a8R#
- 1...Qh5
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Qxh7
- 2.a8Q#
- 2.a8R#
- 1...Sf3
- 2.a8Q#
- 2.a8R#
- 1...Sh3
- 2.Rxh8#
- 1...dxc1Q
- 2.Qd8#
- 1...dxc1S
- 2.Qd8#
- 1...dxc1B
- 2.Qd8#
- 1...dxc1R
- 2.Qd8#
- 1...f3
- 2.a8Q#
- 2.a8R#
- 1...Qf3
- Tries
- 1.Be4?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Kf8
- 2.a8Q#
- 2.a8R#
- 1...Qxe4
- 2.Rxh8#
- 1...Qxh7
- 2.a8Q#
- 2.a8R#
- 1...Rxh7
- 2.a8Q#
- 2.a8R#
- 1...Sxe2
- 2.a8Q#
- 2.a8R#
- 1...dxc1Q
- 2.Qd8#
- 1...dxc1S
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1B
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1R
- 2.Qd8#
- 1...Qg2
- 2.a8Q#
- 2.a8R#
- 1...Qf3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...Qh2
- 2.a8Q#
- 2.a8R#
- 1...Qh3
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.a8Q#
- 2.a8R#
- 1...Qh5
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Rf8
- 2.Qa4#
- 2.a8Q#
- 2.a8R#
- 1...Rg8
- 2.a8Q#
- 2.a8R#
- 1...Sa3
- 2.a8Q#
- 2.a8R#
- 1...Sc3
- 2.a8Q#
- 2.a8R#
- 1...Sf3
- 2.a8Q#
- 2.a8R#
- 1...Sh3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...f3
- 2.a8Q#
- 2.a8R#
- 1...0-0!
- threat
- 1.Rf3?
- threat
- 2.a8Q#
- 2.a8R#
- 1...Kf8
- 2.a8Q#
- 2.a8R#
- 1...Qxf3
- 2.Rxh8#
- 1...Qxh7
- 2.a8Q#
- 2.a8R#
- 1...Rxh7
- 2.a8Q#
- 2.a8R#
- 1...Sxe2
- 2.a8Q#
- 2.a8R#
- 1...Sxf3
- 2.a8Q#
- 2.a8R#
- 1...dxc1Q
- 2.Qd8#
- 1...dxc1S
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1B
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1R
- 2.Qd8#
- 1...Qg2
- 2.a8Q#
- 2.a8R#
- 1...Qh2
- 2.a8Q#
- 2.a8R#
- 1...Qh3
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.a8Q#
- 2.a8R#
- 1...Qh5
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Rf8
- 2.Qa4#
- 2.a8Q#
- 2.a8R#
- 1...Rg8
- 2.a8Q#
- 2.a8R#
- 1...Sa3
- 2.a8Q#
- 2.a8R#
- 1...Sc3
- 2.a8Q#
- 2.a8R#
- 1...Sh3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...0-0!
- threat
- 1.Rxh1?
- threat
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...0-0
- 2.Rfxg1#
- 1...Rxh1
- 2.a8Q#
- 2.a8R#
- 1...Sxe2
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1Q
- 2.Rxh8#
- 2.Qd8#
- 1...dxc1S
- 2.Rxh8#
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1B
- 2.Rxh8#
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1R
- 2.Rxh8#
- 2.Qd8#
- 1...Rh2
- 2.a8Q#
- 2.a8R#
- 1...Rh3
- 2.a8Q#
- 2.a8R#
- 1...Rh4
- 2.a8Q#
- 2.a8R#
- 1...Rh5
- 2.a8Q#
- 2.a8R#
- 1...Rh6
- 2.a8Q#
- 2.a8R#
- 1...Rh7
- 2.a8Q#
- 2.a8R#
- 1...Rf8
- 2.Qa4#
- 2.a8Q#
- 2.a8R#
- 1...Rg8
- 2.a8Q#
- 2.a8R#
- 1...Sa3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...Sc3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...Sf3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...Sh3
- 2.a8Q#
- 2.a8R#
- 1...f3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...Kf8!
- threat
- 1.Qa4+?
- 1...Qc6
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...Kf8!
- 1...Qc6
- 1.Be4?
- Keys
- 1.e4!
- threat
- 2.a8Q#
- 2.a8R#
- 1...Kf8
- 2.a8Q#
- 2.a8R#
- 1...0-0
- 2.Qg4#
- 1...Qxe4
- 2.Rxh8#
- 1...Qxh7
- 2.a8Q#
- 2.a8R#
- 1...Rxh7
- 2.a8Q#
- 2.a8R#
- 1...dxc1Q
- 2.Qd8#
- 1...dxc1S
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1B
- 2.Qd8#
- 2.a8Q#
- 2.a8R#
- 1...dxc1R
- 2.Qd8#
- 1...fxe4 ep
- 2.Bg6#
- 1...Qg2
- 2.a8Q#
- 2.a8R#
- 1...Qf3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...Qh2
- 2.a8Q#
- 2.a8R#
- 1...Qh3
- 2.a8Q#
- 2.a8R#
- 1...Qh4
- 2.a8Q#
- 2.a8R#
- 1...Qh5
- 2.a8Q#
- 2.a8R#
- 1...Qh6
- 2.a8Q#
- 2.a8R#
- 1...Rf8
- 2.Qa4#
- 2.a8Q#
- 2.a8R#
- 1...Rg8
- 2.a8Q#
- 2.a8R#
- 1...Sa3
- 2.a8Q#
- 2.a8R#
- 1...Sc3
- 2.a8Q#
- 2.a8R#
- 1...Se2
- 2.a8Q#
- 2.a8R#
- 1...Sf3
- 2.a8Q#
- 2.a8R#
- 1...Sh3
- 2.Rxh8#
- 2.a8Q#
- 2.a8R#
- 1...f3
- 2.a8Q#
- 2.a8R#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 8
- Sets
- Q(c);N_GUARD::R(J),XR(h)
- Q(c);N_GUARD,P_PINP(I)::R(J),XR(h)
- Q(c);N_GUARD::P=Q
- Q(c);N_GUARD,XR(J)::P=Q
- S(b);S_CUTQ(c)::P=Q
- S(b);S_CUTQ(c)::R(J),XR(h)
- P(d);OGATE,XS(B)::QAR1(C)
- P(e);S_CUTQ(c)::P=Q
- Tries
- Try
- B(F);
- Threat
- P=Q
- Vars
- K(g);P-FLIGHT,P_SPINP(e)::P=Q
- Q(c);N_GUARD,XB(F)::R(J),XR(h)
- Q(c);XR(J)::P=Q
- R(h);XR(J)::P=Q
- S(b);XP(E)::P=Q
- P(d);OGATE,XS(B)::QAR1(C)
- Q(c);::P=Q
- R(h);::P=Q
- S(a);::P=Q
- S(b);::P=Q
- P(e);::P=Q
- Refutation
- K(g);0-0
- Try
- R(D);
- Threat
- P=Q
- Vars
- K(g);P-FLIGHT::P=Q
- Q(c);N_GUARD,XR(D)::R(J),XR(h)
- Q(c);XR(J)::P=Q
- R(h);XR(J)::P=Q
- S(b);XP(E)::P=Q
- S(b);XR(D)::P=Q
- P(d);OGATE,XS(B)::QAR1(C)
- Q(c);::P=Q
- R(h);::P=Q
- S(a);::P=Q
- Refutation
- K(g);0-0
- Try
- R(J);XQ(c)
- Threat
- DUALS(3)
- Vars
- K(g);0-0,OGATEB::R(D),XS(b)
- R(h);XR(J)::P=Q
- R(h);::P=Q
- S(b);::P=Q
- Refutation
- K(g);P-FLIGHT
- Try
- Q(C);CHECK
- Refutation
- K(g);P-FLIGHT
- Try
- Actual
- P(E);
- Threat
- P=Q
- Vars
- K(g);P-FLIGHT::P=Q
- K(g);0-0,OGATEB::QAR(C)
- Q(c);N_GUARD,XP(E)::R(J),XR(h)
- Q(c);XR(J)::P=Q
- R(h);XR(J)::P=Q
- P(d);OGATE,XS(B)::QAR1(C)
- P(e);EP,XP(E)::B(F)
- Q(c);::P=Q
- R(h);::P=Q
- S(a);::P=Q
- S(b);::P=Q
- P(e);::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).