MESON Chess Problem Database
Problem Display
PID: 231191 (1N3Qb1/6p1/4k1P1/1n6/2p3p1/2P1NnB1/5K1p/7B w - - 0 1)
Haglund, John Wilhelm
2nd Prize, Sveden, 1927
#2
8 + 8
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bf7
- 2.Qxf7#
- 1...Bh7
- 2.Qf7#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sfd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...Sa3
- 2.Qd6#
- 1...Sxc3
- 2.Qd6#
- 1...Sbd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...Bf7
- Tries
- 1.Kf1?
- 1...Sxc3
- 2.Qd6#
- 1...Bf7
- 2.Qxf7#
- 1...Bh7
- 2.Qf7#
- 1...Se1
- 2.Bd5#
- 1...Sg1
- 2.Bd5#
- 1...Sfd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...Sa3
- 2.Qd6#
- 1...Sbd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...Sd2+!
- 1...Sxc3
- 1.Sa6?
- threat
- 2.Sc5#
- 1...Bf7
- 2.Qxf7#
- 1...Kd7!
- threat
- 1.Sc6?
- threat
- 2.Qe7#
- 2.Qf5#
- 1...Bf7
- 2.Qe7#
- 2.Qxf7#
- 1...Sfd4
- 2.Qe7#
- 1...Sh4
- 2.Qe7#
- 1...Se5
- 2.Qe7#
- 1...Sbd4
- 2.Qd6#
- 2.Qe7#
- 1...Sd6
- 2.Qxd6#
- 2.Qe7#
- 1...Kd7!
- threat
- 1.Sd7?
- threat
- 2.Sc5#
- 2.Qe8#
- 1...Bf7
- 2.Qxf7#
- 1...Se5
- 2.Sc5#
- 1...Sd6
- 2.Sc5#
- 2.Qxd6#
- 1...Sc7
- 2.Sc5#
- 2.Qd6#
- 1...Kxd7!
- threat
- 1.Bf4?
- 1...Sxc3
- 2.Qd6#
- 1...Bf7
- 2.Qxf7#
- 1...Se1
- 2.Bd5#
- 1...Bh7
- 2.Qf7#
- 1...Sg1
- 2.Bd5#
- 1...Sd2
- 2.Bd5#
- 1...Sfd4
- 2.Bd5#
- 1...Sh4
- 2.Bd5#
- 1...Se5
- 2.Bd5#
- 1...Sg5
- 2.Bd5#
- 1...Sa3
- 2.Qd6#
- 1...Sbd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...g3+!
- 1...Sxc3
- 1.Qf4?
- 1...Sxc3
- 2.Qd6#
- 1...Se5
- 2.Qxe5#
- 1...Se1
- 2.Qe5#
- 1...Bf7
- 2.Qxf7#
- 1...Bh7
- 2.Qf7#
- 1...Sg1
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sfd4
- 2.Qe5#
- 1...Sh4
- 2.Qe5#
- 1...Sg5
- 2.Qe5#
- 1...Sa3
- 2.Qd6#
- 1...Sbd4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sc7
- 2.Qd6#
- 1...Ke7!
- 1...Sxc3
- 1.Qxg8+?
- 1...Ke7
- 2.Sd5#
- 1...Kf6!
- 1...Ke7
- 1.Kf1?
- Keys
- 1.Sd5!
- 1...Kxd5
- 2.Qf5#
- 1...Sxc3
- 2.Sc7#
- 1...Bf7
- 2.Qxf7#
- 1...Se1
- 2.Qc8#
- 1...Bh7
- 2.Qf7#
- 1...Sg1
- 2.Qc8#
- 1...Sd2
- 2.Qc8#
- 1...Sfd4
- 2.Qc8#
- 1...Sh4
- 2.Qc8#
- 1...Se5
- 2.Sf4#
- 1...Sg5
- 2.Qc8#
- 1...Sa3
- 2.Sc7#
- 1...Sbd4
- 2.Sc7#
- 1...Sd6
- 2.Sc7#
- 1...Sa7
- 2.Sc7#
- 1...Sc7
- 2.Sxc7#
- 1...Kxd5
- 1.Sd5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 13
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(h);N_GUARD::QAB1(H),XB(h)
- B(h);N_GUARD::QAB1(H)
- S(b);OGATE::B(A)
- S(e);N_GUARD::QAR1(H)
- S(e);N_GUARD,XP(C)::QAR1(H)
- S(e);N_GUARD::QAR1(H),XS(e)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- S(e);N_GUARD,XP(C)::QAR1(H)
- B(h);N_GUARD::QAB1(H),XB(h)
- B(h);N_GUARD::QAB1(H)
- S(b);OGATE::B(A)
- S(e);N_GUARD::QAR1(H)
- S(e);N_GUARD::QAR1(H),XS(e)
- Refutation
- S(b);CHECK
- Try
- S(G);
- Threat
- S(G)
- Vars
- B(h);N_GUARD::QAB1(H),XB(h)
- Refutation
- K(f);S_FLIGHT
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(b);::QAR1(H)
- Refutation
- K(f);S_FLIGHT
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- B(h);N_GUARD::QAB1(H),XB(h)
- S(b);::S(G)
- Refutation
- K(f);S_FLIGHT,XS(G)
- Try
- B(E);
- Vars
- S(e);N_GUARD,XP(C)::QAR1(H)
- B(h);N_GUARD::QAB1(H),XB(h)
- S(b);OGATE::B(A)
- B(h);N_GUARD::QAB1(H)
- S(e);N_GUARD::QAR1(H)
- S(e);N_GUARD::QAR1(H),XS(e)
- Refutation
- P(d);CHECK
- Try
- Q(H);
- Vars
- S(e);N_GUARD,XP(C)::QAR1(H)
- S(b);N_GUARD::QAR1(H),XS(b)
- S(b);N_GUARD::QAR1(H)
- B(h);N_GUARD::QAB1(H),XB(h)
- B(h);N_GUARD::QAB1(H)
- S(e);N_GUARD::QAR1(H)
- S(e);N_GUARD::QAR1(H),XS(e)
- Refutation
- K(f);P-FLIGHT
- Try
- Q(H);CHECK,XB(h)
- Vars
- K(f);P-FLIGHT::S(D)
- Refutation
- K(f);P-FLIGHT
- Try
- Actual
- S(D);
- Vars
- K(f);P_SPINS(b),S_FLIGHT,XS(D)::QAR2(H)
- S(e);N_GUARD,XP(C)::S(D)
- B(h);N_GUARD::QAB1(H),XB(h)
- S(b);::QAB(H)
- B(h);N_GUARD::QAB1(H)
- S(b);SBLOCK::S(D)
- S(e);N_GUARD::S(D)
- S(e);N_GUARD::S(D),XS(e)
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).