MESON Chess Problem Database
Problem Display
PID: 166875 (8/4p3/4n3/1N1p1p2/1p2kPn1/3N4/4PBp1/Q5K1 w - - 0 1)
Hermanson, Halvar
Schackvarlden, 1931
#2
7 + 8
| 15148 | Sadier Collection | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sxf2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...Sxf4
- 2.Sc5#
- 2.Qd4#
- 1...Sc5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...b3
- 2.Sc3#
- 1...d4
- 2.Qa8#
- 1...Sxf2
- Tries
- 1.Sc5+?
- 1...Sxc5
- 2.Qd4#
- 1...Kxf4!
- 1...Sxc5
- 1.Sc7?
- 1...Sxf2
- 2.Qe5#
- 1...Sxf4
- 2.Sc5#
- 2.Qd4#
- 1...Sxc7
- 2.Qd4#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...d4
- 2.Qa8#
- 1...b3!
- 1...Sxf2
- 1.Bc5?
- 1...Sxf4
- 2.Qd4#
- 1...Sxc5
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...b3
- 2.Sc3#
- 1...Sf2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...d4!
- 1...Sxf4
- 1.Bb6?
- 1...Sxf4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...b3
- 2.Sc3#
- 1...Sf2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...d4!
- 1...Sxf4
- 1.Ba7?
- 1...Sxf4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...b3
- 2.Sc3#
- 1...Sf2
- 2.Qe5#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...d4!
- 1...Sxf4
- 1.Qb2?
- 1...Sxf2
- 2.Qe5#
- 1...Sxf4
- 2.Sc5#
- 2.Qd4#
- 1...b3
- 2.Sc3#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...d4!
- 1...Sxf2
- 1.Qc3?
- 1...Sxf2
- 2.Qe5#
- 1...Sxf4
- 2.Sc5#
- 2.Qd4#
- 1...bxc3
- 2.Sxc3#
- 1...d4
- 2.Qc6#
- 1...Sh2
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sf6
- 2.Qe5#
- 1...Sh6
- 2.Qe5#
- 1...Sd4
- 2.Qxd4#
- 1...Sc5
- 2.Qd4#
- 1...Sg5
- 2.Qd4#
- 1...Sc7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sd8
- 2.Qd4#
- 1...Sf8
- 2.Qd4#
- 1...b3!
- 1...Sxf2
- 1.Sc5+?
- Keys
- 1.Qc1!
- 1...Sxf2
- 2.Sxf2#
- 1...Sxf4
- 2.Qxf4#
- 1...d4
- 2.Qc6#
- 1...b3
- 2.Sc3#
- 1...Sh2
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Se5
- 2.Qe3#
- 1...Sf6
- 2.Qe3#
- 1...Sh6
- 2.Qe3#
- 1...Sd4
- 2.Sc5#
- 1...Sc5
- 2.Sxc5#
- 1...Sg5
- 2.Sc5#
- 1...Sc7
- 2.Sc5#
- 1...Sg7
- 2.Sc5#
- 1...Sd8
- 2.Sc5#
- 1...Sf8
- 2.Sc5#
- 1...Sxf2
- 1.Qc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(d);N_GUARD,XB(D)::QAR1(A)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- P(b);N_GUARD::S(G)
- P(e);OGATEB::QAB(A)
- Tries
- Try
- S(E);CHECK
- Vars
- S(g);XS(E)::QAR1(A)
- Refutation
- K(c);P-FLIGHT,XP(F)
- Try
- S(G);
- Vars
- S(d);N_GUARD,XB(D)::QAR1(A)
- S(g);N_GUARD,XS(G)::QAR1(A)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- P(e);OGATEB::QAB(A)
- Refutation
- P(b);
- Try
- B(D);
- Vars
- S(g);N_GUARD,XP(F)::QAR1(A)
- S(g);N_GUARD,XB(D)::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- P(b);N_GUARD::S(G)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::QAR1(A)
- Refutation
- P(e);
- Try
- B(D);
- Vars
- S(g);N_GUARD,XP(F)::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- P(b);N_GUARD::S(G)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- Refutation
- P(e);
- Try
- B(D);
- Vars
- S(g);N_GUARD,XP(F)::QAR1(A)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- P(b);N_GUARD::S(G)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- Refutation
- P(e);
- Try
- Q(A);
- Vars
- S(d);N_GUARD,XB(D)::QAR1(A)
- P(b);N_GUARD::S(G)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- Refutation
- P(e);
- Try
- Q(A);
- Vars
- S(d);N_GUARD,XB(D)::QAR1(A)
- P(b);XQ(A)::S(G),XP(b)
- P(e);OGATEB::QAB(A)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::QAR1(A),XS(g)
- S(g);N_GUARD::QAR1(A)
- Refutation
- P(b);
- Try
- Actual
- Q(A);
- Vars
- S(d);XB(D)::S(E),XS(d)
- S(g);OGATE,XP(F)::QAR1(A),XS(g)
- P(e);OGATEB::QAB(A)
- P(b);N_GUARD::S(G)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::S(E)
- S(g);N_GUARD::S(E),XS(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).