MESON Chess Problem Database
Problem Display
PID: 200131 (B4N2/1r4n1/4p3/4Ppp1/1p2Nkpn/5P2/1B5P/1K2RQ1b w - - 0 1)
Viksna, Kristaps
Suomen Shakki, 1990
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Sg2
- 2.Sg6#
- 1...Sxf3
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...Sh5
- 2.Sxe6#
- 1...Se8
- 2.Sxe6#
- 1...g3
- 2.hxg3#
- 1...Sg2
- Tries
- 1.Sf2?
- threat
- 2.Sd3#
- 1...Kxf3
- 2.Sd1#
- 2.Sxh1#
- 2.Sd3#
- 2.Sh3#
- 2.Se4#
- 1...gxf3
- 2.Bc1#
- 2.Qc4#
- 1...Rd7!
- threat
- 1.Sc5?
- threat
- 2.Sd3#
- 2.Bc1#
- 1...gxf3
- 2.Qc4#
- 1...Sg2
- 2.Sd3#
- 2.Sg6#
- 1...Rd7!
- threat
- 1.Sd6?
- threat
- 2.Bc1#
- 1...gxf3
- 2.Qc4#
- 1...Sg2
- 2.Sg6#
- 1...Rc7!
- threat
- 1.Qe2?
- threat
- 2.Qe3#
- 1...fxe4
- 2.Qxe4#
- 1...Sg2
- 2.Sg6#
- 1...gxf3!
- threat
- 1.Qd3?
- threat
- 2.Qe3#
- 1...fxe4
- 2.Qxe4#
- 1...Sg2
- 2.Sg6#
- 1...gxf3!
- threat
- 1.Qh3?
- threat
- 2.Qg3#
- 1...fxe4
- 2.Qxg4#
- 1...g3
- 2.Qxg3#
- 1...Sh5
- 2.Sxe6#
- 1...gxh3!
- threat
- 1.Qg1?
- threat
- 2.Qe3#
- 2.Qg3#
- 1...Kxf3
- 2.Qf2#
- 2.Qf1#
- 2.Qg3#
- 1...gxf3
- 2.Qg3#
- 2.Qxg5#
- 1...fxe4
- 2.Qxg4#
- 1...Bg2
- 2.Qe3#
- 1...Sh5
- 2.Qe3#
- 1...g3
- 2.Qe3#
- 2.Qxg3#
- 1...Sg2!
- threat
- 1.Qf2?
- threat
- 2.Qe3#
- 2.Qg3#
- 1...gxf3
- 2.Qg3#
- 1...Sg2
- 2.Sg6#
- 2.Qg3#
- 1...Sh5
- 2.Sxe6#
- 2.Qe3#
- 1...g3
- 2.Qe3#
- 2.Qxg3#
- 2.hxg3#
- 1...fxe4!
- threat
- 1.Sf2?
- Keys
- 1.Qc4!
- threat
- 2.Sd2#
- 1...Kxf3
- 2.Qf1#
- 1...Bxf3
- 2.Qc1#
- 1...Sxf3
- 2.Sg6#
- 1...fxe4
- 2.Qxe4#
- 1...Rd7
- 2.Sd6#
- 1...Rc7
- 2.Sc5#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 5
- Sets
- S(e);N_GUARD::S(J)
- S(e);N_GUARD,P_SPINS(e),XP(F)::S(J)
- S(e);N_GUARD::S(J),XS(e)
- S(j);N_GUARD::S(J),XP(h)
- P(d);OGATE::P(E),XP(d)
- Tries
- Try
- S(G);
- Threat
- S(G)
- Refutation
- R(i);
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- P(d);P_SPINP(d),SBLOCK,XP(F)::QAR(C)
- Refutation
- R(i);
- Try
- S(G);
- Threat
- B(D)
- Vars
- P(d);P_SPINP(d),SBLOCK,XP(F)::QAR(C)
- S(e);N_GUARD::S(J)
- Refutation
- R(i);
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- P(f);OGATE,XS(G)::QAR1(C),XP(f)
- S(e);N_GUARD::S(J)
- Refutation
- P(d);XP(F)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- P(f);OGATE,XS(G)::QAR1(C),XP(f)
- S(e);N_GUARD::S(J)
- Refutation
- P(d);XP(F)
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- P(f);N_GUARD,XS(G)::QAR1(C),XP(d)
- P(d);::QAB1(C),XP(d)
- S(j);N_GUARD::S(J),XP(h)
- Refutation
- P(d);XQ(C)
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- P(f);N_GUARD,XS(G)::QAR1(C),XP(d)
- B(a);::QAB1(C)
- S(j);::QAB1(C)
- Refutation
- S(e);
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- P(d);P_SPINP(d),XP(F)::QAB1(C)
- Refutation
- P(f);XS(G)
- Try
- Actual
- Q(C);
- Threat
- QAR(C)+S(G)
- Vars
- K(c);OGATEB,P-FLIGHT,XP(F)::QAR2(C)
- B(a);SBLOCK,XP(F)::QAB(C)
- S(e);N_GUARD,SBLOCK,XP(F)::S(J)
- P(f);OGATE,P_SPINP(f),XS(G)::QAR1(C),XP(f)
- R(i);::QAR(C)+S(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).