MESON Chess Problem Database
Problem Display
PID: 3146 (8/8/Bnp1K3/b7/1knB4/8/Q7/1N6 w - - 0 1)
Williams, Philip Hamilton
Source?, 1919
#2
5 + 5
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Sa3
- 2.Qxa3#
- 1...Se3
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...c5
- 2.Bc3#
- 1...Sb2
- Tries
- 1.Ba1?
- 1...Sa3
- 2.Qxa3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...c5
- 2.Bc3#
- 1...Kc5!
- 1...Sa3
- 1.Bg1?
- 1...Sa3
- 2.Qxa3#
- 1...Se3
- 2.Qa3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...c5!
- 1...Sa3
- 1.Bb2?
- 1...Sxb2
- 2.Qa3#
- 1...Sa3
- 2.Qxa3#
- 1...c5
- 2.Bc3#
- 1...Sd2
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...Kc5!
- 1...Sxb2
- 1.Bf2?
- 1...Sa3
- 2.Qxa3#
- 1...Se3
- 2.Qa3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...c5!
- 1...Sa3
- 1.Be3?
- 1...Sxe3
- 2.Qa3#
- 1...Sa3
- 2.Qxa3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...c5!
- 1...Sxe3
- 1.Be5?
- 1...Sxe5
- 2.Qa3#
- 1...Sa3
- 2.Qxa3#
- 1...c5
- 2.Bc3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...Kc5!
- 1...Sxe5
- 1.Bxb6?
- threat
- 2.Qxc4#
- 1...Sxb6
- 2.Qa3#
- 1...Sa3
- 2.Qxa3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Bxb6!
- threat
- 1.Bf6?
- 1...Sa3
- 2.Qxa3#
- 1...c5
- 2.Bc3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...Kc5!
- 1...Sa3
- 1.Bg7?
- 1...Sa3
- 2.Qxa3#
- 1...c5
- 2.Bc3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...Kc5!
- 1...Sa3
- 1.Bh8?
- 1...Sa3
- 2.Qxa3#
- 1...c5
- 2.Bc3#
- 1...Sb2
- 2.Qa3#
- 1...Sd2
- 2.Qa3#
- 1...Se3
- 2.Qa3#
- 1...Se5
- 2.Qa3#
- 1...Sd6
- 2.Qa3#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...Kc5!
- 1...Sa3
- 1.Ba1?
- Keys
- 1.Qc2!
- 1...c5
- 2.Bc3#
- 1...Sb2
- 2.Bc5#
- 1...Sd2
- 2.Bc5#
- 1...Sa3
- 2.Bc5#
- 1...Se3
- 2.Bc5#
- 1...Se5
- 2.Bc5#
- 1...Sd6
- 2.Bc5#
- 1...Sa4
- 2.Qxc4#
- 1...Sd5
- 2.Qxc4#
- 1...Sd7
- 2.Qxc4#
- 1...Sa8
- 2.Qxc4#
- 1...Sc8
- 2.Qxc4#
- 1...c5
- 1.Qc2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- P(e);SBLOCK::B(C)
- Tries
- Try
- B(C);
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- P(e);SBLOCK::B(C)
- Refutation
- K(a);S_FLIGHT
- Try
- B(C);
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- P(e);
- Try
- B(C);
- Vars
- S(b);N_GUARD,XB(C)::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- P(e);SBLOCK::B(C)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- K(a);S_FLIGHT
- Try
- B(C);
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- P(e);
- Try
- B(C);
- Vars
- S(b);N_GUARD,XB(C)::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- P(e);
- Try
- B(C);
- Vars
- S(b);N_GUARD,XB(C)::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- P(e);SBLOCK::B(C)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- K(a);S_FLIGHT
- Try
- B(C);XS(d)
- Threat
- QAR1(B),XS(b)
- Vars
- S(b);N_GUARD,XB(C)::QAB1(B)
- S(b);N_GUARD::QAB1(B),XS(b)
- S(b);N_GUARD::QAB1(B)
- Refutation
- B(c);XB(C)
- Try
- B(C);
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- P(e);SBLOCK::B(C)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- K(a);S_FLIGHT
- Try
- B(C);
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- P(e);SBLOCK::B(C)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- K(a);S_FLIGHT
- Try
- B(C);
- Vars
- S(b);N_GUARD::QAB1(B),XS(b)
- P(e);SBLOCK::B(C)
- S(b);N_GUARD::QAB1(B)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
- Refutation
- K(a);S_FLIGHT
- Try
- Actual
- Q(B);
- Vars
- P(e);SBLOCK::B(C)
- S(b);::B(C)
- S(d);N_GUARD,SBLOCK::QAR1(B),XS(b)
- S(d);N_GUARD::QAR1(B),XS(b)
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).