MESON Chess Problem Database
Problem Display
PID: 134427 (2n5/4NN2/8/K1k5/2b5/8/3Q4/6b1 w - - 0 1)
Hultberg, Gustav Herbert
Schackvarlden, 1926
#2
4 + 4
| 14620 | Sunningdale Machine Gun Solving | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qe3#
- 2.Qf2#
- 1...Be3
- 2.Qxe3#
- 1...Bd4
- 2.Qb4#
- 1...Bf1
- 2.Qb4#
- 2.Qd5#
- 1...Ba2
- 2.Qb4#
- 1...Be2
- 2.Qb4#
- 2.Qd5#
- 1...Bb3
- 2.Qb4#
- 1...Bd3
- 2.Qb4#
- 1...Bb5
- 2.Qb4#
- 2.Qd5#
- 1...Bd5
- 2.Qb4#
- 2.Qxd5#
- 1...Ba6
- 2.Qb4#
- 2.Qd5#
- 1...Be6
- 2.Qb4#
- 1...Bxf7
- 2.Qb4#
- 1...Sb6
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Sxe7
- 2.Qd6#
- 1...Bf2
- Tries
- 1.Qg5+?
- 1...Bd5
- 2.Qxd5#
- 1...Kd4!
- 1...Bd5
- 1.Qg5+?
- Keys
- 1.Qf4!
- 1...Bxf7
- 2.Qb4#
- 1...Sxe7
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qe3#
- 2.Qf2#
- 1...Be3
- 2.Qxe3#
- 1...Bd4
- 2.Qc7#
- 1...Bf1
- 2.Qb4#
- 1...Ba2
- 2.Qb4#
- 1...Be2
- 2.Qb4#
- 1...Bb3
- 2.Qb4#
- 1...Bd3
- 2.Qb4#
- 1...Bb5
- 2.Qb4#
- 1...Bd5
- 2.Qb4#
- 1...Ba6
- 2.Qb4#
- 1...Be6
- 2.Qb4#
- 1...Sb6
- 2.Qd6#
- 1...Sa7
- 2.Qd6#
- 1...Bxf7
- 1.Qf4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);SBLOCK::QAB1(A)
- B(b);::QAB1(A)
- B(b);XS(D)::QAB1(A)
- S(d);N_GUARD::QAB1(A)
- S(d);N_GUARD::QAB1(A),XS(d)
- S(d);N_GUARD,XS(C)::QAB1(A)
- Tries
- Try
- Q(A);CHECK
- Vars
- B(b);N_GUARD,P_SPINB(b)::QAR1(A),XB(b)
- Refutation
- K(c);S_FLIGHT
- Try
- Actual
- Q(A);
- Vars
- B(b);OGATE,XS(D)::QAB1(A)
- S(d);N_GUARD,XS(C)::QAB1(A)
- S(d);N_GUARD::QAB1(A),XS(d)
- B(a);N_GUARD::QAB(A),XB(a)
- B(a);SBLOCK::QAR2(A)
- B(b);OGATE::QAB1(A)
- S(d);N_GUARD::QAB1(A)
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).