MESON Chess Problem Database
Problem Display
PID: 273226 (8/r1B1P3/3PN1Kp/2n1k1np/2BpN2R/1R6/8/b2Q4 w - - 0 1)
Janevski, Zivko
diagrammes, 1978
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Ra2
- 2.d7#
- 1...Ra3
- 2.d7#
- 1...Ra4
- 2.d7#
- 1...Ra5
- 2.d7#
- 1...Ra8
- 2.d7#
- 1...Ra2
- Tries
- 1.S4xc5?
- threat
- 2.Sd3#
- 2.Sd7#
- 1...d3
- 2.Sxd3#
- 2.Sd7#
- 1...Rxc7!
- threat
- 1.S4xg5?
- threat
- 2.Sf3#
- 2.Sf7#
- 1...Rxc7
- 2.Sf7#
- 1...hxg5!
- threat
- 1.S6xc5?
- threat
- 2.Sd3#
- 2.Sd7#
- 1...Rxc7
- 2.Sd3#
- 1...d3!
- threat
- 1.S6xg5?
- threat
- 2.Sf3#
- 2.Sf7#
- 1...d3
- 2.Sf3#
- 1...hxg5!
- threat
- 1.Qf3?
- threat
- 2.Qg3#
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...Scxe4
- 2.Qf4#
- 2.Qf5#
- 1...Scxe6
- 2.Qf5#
- 2.Qf6#
- 1...Sgxe4
- 2.Qf4#
- 2.Qf5#
- 1...Sgxe6
- 2.Qf5#
- 2.Qf6#
- 1...Sd3
- 2.Qf5#
- 2.Qf6#
- 1...Sd7
- 2.Qg3#
- 2.Qf4#
- 2.Qf5#
- 1...Sh3
- 2.Qf5#
- 2.Qf6#
- 1...Sh7
- 2.Qg3#
- 2.Qf4#
- 2.Qf5#
- 1...Sxf3!
- threat
- 1.Qg4?
- threat
- 2.Qf5#
- 2.Qg3#
- 2.Qf4#
- 1...Scxe4
- 2.Qf5#
- 2.Qf4#
- 1...Scxe6
- 2.Qf5#
- 1...Sgxe4
- 2.Qf5#
- 2.Qf4#
- 1...Sgxe6
- 2.Qf5#
- 1...Sd3
- 2.Qf5#
- 1...Sh3
- 2.Qf5#
- 1...hxg4!
- threat
- 1.Qe1?
- threat
- 2.Qg3#
- 1...Scxe4
- 2.Rb5#
- 1...Scxe6
- 2.Sxg5#
- 1...Sgxe4
- 2.Rxh5#
- 1...Sgxe6
- 2.Sxc5#
- 1...Sh3
- 2.S4xc5#
- 1...Sd3!
- threat
- 1.Qf1?
- threat
- 2.Qf4#
- 2.Qf5#
- 2.Qf6#
- 1...Scxe4
- 2.Qf4#
- 2.Qf5#
- 1...Scxe6
- 2.Qf5#
- 2.Qf6#
- 1...Sgxe4
- 2.Qf4#
- 2.Qf5#
- 1...Sgxe6
- 2.Qf5#
- 2.Qf6#
- 1...Sd3
- 2.Qf5#
- 2.Qf6#
- 1...Sd7
- 2.Qf4#
- 2.Qf5#
- 1...Sh3
- 2.Qf5#
- 2.Qf6#
- 1...Sh7
- 2.Qf4#
- 2.Qf5#
- 1...Sf3!
- threat
- 1.e8Q?
- threat
- 2.Qh8#
- 1...Scxe4
- 2.Sxg5#
- 1...Scxe6
- 2.Rb5#
- 1...Sgxe4
- 2.Sxc5#
- 1...Sgxe6
- 2.Qxh5#
- 1...Ra8
- 2.d7#
- 1...Sd7
- 2.S6xg5#
- 1...Sf7
- 2.S6xc5#
- 1...Sh7
- 2.S6xc5#
- 1...Rxc7!
- threat
- 1.S4xc5?
- Keys
- 1.Qe2!
- threat
- 2.Qh2#
- 1...Scxe4
- 2.Rb5#
- 1...Scxe6
- 2.Sxg5#
- 1...Sgxe4
- 2.Rxh5#
- 1...Sgxe6
- 2.Sxc5#
- 1...Ra2
- 2.d7#
- 1...Sd3
- 2.S4xg5#
- 1...Sf3
- 2.S4xc5#
- 1...Sh3
- 2.S4xc5#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 7
- REMOVED MATES = 4
- Sets
- R(h);N_GUARD::B(I)+P(F)
- Tries
- Try
- S(D);XS(c)
- Threat
- DUALS(2)
- Refutation
- R(h);XB(I)
- Try
- S(D);XS(e)
- Threat
- DUALS(2)
- Vars
- R(h);XB(I)::S(D)
- Refutation
- P(g);XS(D)
- Try
- S(G);XS(c)
- Threat
- DUALS(2)
- Vars
- R(h);XB(I)::S(G)
- Refutation
- P(b);
- Try
- S(G);XS(e)
- Threat
- DUALS(2)
- Vars
- P(b);::S(G)
- Refutation
- P(g);XS(G)
- Try
- Q(A);
- Threat
- DUALS(4)
- Refutation
- S(e);XQ(A)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- S(c);XS(G)::QAR1(A)
- S(e);XS(G)::QAR1(A)
- S(c);::QAR1(A)
- S(e);::QAR1(A)
- Refutation
- P(f);XQ(A)
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- S(c);OGATEB,P_SPINS(c),XS(D)::R(B)
- S(c);N_GUARD,XS(G)::QAR(A)+S(D),XS(e)
- S(e);OGATEB,P_SPINS(e),XS(D)::R(E),XP(f)
- S(e);N_GUARD,XS(G)::QAR(A)+S(D),XS(c)
- S(e);N_GUARD::QAR(A)+S(D),XS(c)
- Refutation
- S(c);
- Try
- Q(A);
- Threat
- DUALS(3)
- Refutation
- S(e);
- Try
- P(J);
- Threat
- QAB(J)
- Vars
- S(c);N_GUARD,XS(D)::QAR(J)+S(G),XS(e)
- S(c);OGATEB,P_SPINS(c),XS(G)::R(B)
- S(e);N_GUARD,XS(D)::QAR(J)+S(G),XS(c)
- S(e);OGATEB,P_SPINS(e),XS(G)::QAR(A),XP(f)
- R(h);N_GUARD::B(I)+P(F)
- S(c);N_GUARD::QAR(J)+S(G),XS(e)
- S(e);N_GUARD::QAR(J)+S(G),XS(c)
- Refutation
- R(h);XB(I)
- Try
- Actual
- Q(A);
- Threat
- QAB(A)
- Vars
- S(c);OGATEB,P_SPINS(c),XS(D)::R(B)
- S(c);N_GUARD,XS(G)::QAR(A)+S(D),XS(e)
- S(e);OGATEB,P_SPINS(e),XS(D)::R(E),XP(f)
- S(e);N_GUARD,XS(G)::QAR(A)+S(D),XS(c)
- R(h);N_GUARD::B(I)+P(F)
- S(c);N_GUARD::QAR(A)+S(D),XS(e)
- S(e);N_GUARD::QAR(A)+S(D),XS(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).