MESON Chess Problem Database
Problem Display
PID: 264958 (2r5/3R1p2/b1p2K1p/2P5/BrnNkpp1/2P5/q1P2P2/3Qn3 w - - 0 1)
Hannelius, Jan Ingvar
Probleemblad, 1949
#2
9 + 12
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Bxc6#
- 1...Rb8
- 2.Bxc6#
- 1...Rd8
- 2.Bxc6#
- 1...Re8
- 2.Bxc6#
- 1...Rf8
- 2.Bxc6#
- 1...Rg8
- 2.Bxc6#
- 1...Rh8
- 2.Bxc6#
- 1...Sg2
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.cxd3#
- 1...Sf3
- 2.Qd3#
- 1...Ra8
- Tries
- 1.Sf3?
- threat
- 2.Rd4#
- 1...Sxc2
- 2.Qd3#
- 1...Sxf3
- 2.Qd3#
- 1...Rd8
- 2.Bxc6#
- 1...Sb2
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sa3
- 2.Sd2#
- 1...Se3
- 2.Sd2#
- 1...Sa5
- 2.Sd2#
- 1...Se5
- 2.Sd2#
- 1...Sb6
- 2.Sd2#
- 1...Sd6!
- threat
- 1.Sb5?
- threat
- 2.Rd4#
- 1...Sxc2
- 2.Qd3#
- 1...Sf3
- 2.Qd3#
- 1...Sb2
- 2.Sd6#
- 2.Qe2#
- 1...Sd2
- 2.Qe2#
- 1...Sa3
- 2.Sd6#
- 2.Qe2#
- 1...Se3
- 2.Sd6#
- 1...Sa5
- 2.Sd6#
- 2.Qe2#
- 1...Se5
- 2.Sd6#
- 2.Qe2#
- 1...Sb6
- 2.Sd6#
- 2.Qe2#
- 1...Sd6
- 2.Sxd6#
- 1...Rd8!
- threat
- 1.Sf5?
- threat
- 2.Rd4#
- 1...Sxc2
- 2.Qd3#
- 1...Rd8
- 2.Bxc6#
- 1...Sf3
- 2.Qd3#
- 1...Sb2
- 2.Sd6#
- 1...Sa3
- 2.Sd6#
- 1...Se3
- 2.Sd6#
- 1...Sa5
- 2.Sd6#
- 1...Se5
- 2.Sd6#
- 1...Sb6
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd2!
- threat
- 1.Re7+?
- 1...Se5
- 2.Rxe5#
- 1...Kd5!
- 1...Se5
- 1.f3+?
- 1...Ke3
- 2.Qe2#
- 2.Qxe1#
- 1...Sxf3
- 2.Qd3#
- 1...gxf3!
- 1...Ke3
- 1.Sf3?
- Keys
- 1.Sb3!
- threat
- 2.Rd4#
- 1...Sxc2
- 2.Qd3#
- 1...Rd8
- 2.Bxc6#
- 1...Sf3
- 2.Qd3#
- 1...Sb2
- 2.Sd2#
- 2.Re7#
- 1...Sd2
- 2.Sxd2#
- 1...Sa3
- 2.Sd2#
- 2.Re7#
- 1...Se3
- 2.Sd2#
- 2.Re7#
- 1...Sa5
- 2.Sd2#
- 2.Re7#
- 1...Se5
- 2.Sd2#
- 1...Sb6
- 2.Sd2#
- 2.Re7#
- 1...Sd6
- 2.Re7#
- threat
- 1.Sb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- R(l);N_GUARD::B(E),XP(i)
- S(a);N_GUARD::QAB1(A)
- Tries
- Try
- S(F);
- Threat
- R1(I)
- Vars
- S(a);N_GUARD,XP(B)::QAB1(A)
- S(a);N_GUARD,XS(F)::QAB1(A)
- R(l);N_GUARD::B(E),XP(i)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- S(d);
- Try
- S(F);
- Threat
- R1(I)
- Vars
- S(a);N_GUARD,XP(B)::QAB1(A)
- S(a);N_GUARD::QAB1(A)
- S(d);N_GUARD::QAR2(A)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- R(l);
- Try
- S(F);
- Threat
- R1(I)
- Vars
- S(a);N_GUARD,XP(B)::QAB1(A)
- R(l);N_GUARD::B(E),XP(i)
- S(a);N_GUARD::QAB1(A)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- Refutation
- S(d);
- Try
- R(I);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::R1(I),XS(d)
- Refutation
- K(e);S_FLIGHT
- Try
- P(C);CHECK
- Vars
- S(a);XP(C)::QAB1(A)
- Refutation
- P(g);XP(C)
- Try
- Actual
- S(F);
- Threat
- R1(I)
- Vars
- S(a);N_GUARD,XP(B)::QAB1(A)
- R(l);N_GUARD::B(E),XP(i)
- S(a);N_GUARD::QAB1(A)
- S(d);N_GUARD::S(F),XS(d)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::R(I)
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).