MESON Chess Problem Database
Problem Display
PID: 15173 (4B3/4Q1p1/8/5k2/3K3R/3n4/8/8 w - - 0 1)
Lewis, Robert Tony
The Problemist, 1980
#2
4 + 3
| 2786 | More Fun with Chess Miniatures | 2000 |
| 136 | Problem Observer | 2005 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Qe5#
- 1...Se1
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sf2
- 2.Qe5#
- 1...Sb4
- 2.Qe5#
- 1...Sf4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...g5
- 2.Qf7#
- 1...g6
- 2.Bd7#
- 1...Sc1
- Tries
- 1.Kxd3?
- 1...g6
- 2.Bd7#
- 1...g5!
- 1...g6
- 1.Ke3?
- 1...Sc1
- 2.Rf4#
- 1...Se1
- 2.Rf4#
- 1...Sb2
- 2.Rf4#
- 1...Sf2
- 2.Rf4#
- 1...Sb4
- 2.Rf4#
- 1...Sf4
- 2.Rxf4#
- 1...Sc5
- 2.Rf4#
- 1...Se5
- 2.Rf4#
- 1...g6
- 2.Bd7#
- 1...g5!
- 1...Sc1
- 1.Bh5?
- 1...Sc1
- 2.Qe5#
- 1...Se1
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sf2
- 2.Qe5#
- 1...Sb4
- 2.Qe5#
- 1...Sf4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...g5
- 2.Qf7#
- 1...g6!
- 1...Sc1
- 1.Re4?
- 1...Sc1
- 2.Qe5#
- 1...Se1
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sf2
- 2.Qe5#
- 1...Sb4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...g5
- 2.Qf8#
- 2.Qe6#
- 2.Qf7#
- 1...g6
- 2.Bd7#
- 1...Sf4!
- 1...Sc1
- 1.Qd6?
- threat
- 2.Qg6#
- 1...Sf4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...g6
- 2.Qxg6#
- 1...Kg5!
- threat
- 1.Qe6+?
- 1...Kg5
- 2.Rg4#
- 1...Kxe6!
- 1...Kg5
- 1.Qxg7?
- threat
- 2.Bd7#
- 2.Qg6#
- 1...Sf4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 2.Qg6#
- 1...Se5
- 2.Qxe5#
- 1...Ke6!
- threat
- 1.Kxd3?
- Keys
- 1.Bf7!
- 1...Sc1
- 2.Qe5#
- 1...Se1
- 2.Qe5#
- 1...Sb2
- 2.Qe5#
- 1...Sf2
- 2.Qe5#
- 1...Sb4
- 2.Qe5#
- 1...Sf4
- 2.Qe5#
- 1...Sc5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...g5
- 2.Qe6#
- 1...g6
- 2.Be6#
- 1...Sc1
- 1.Bf7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(c);SBLOCK::QAR2(C)
- P(c);SBLOCK::B(D)
- Tries
- Try
- K(A);P-FLIGHT,XS(a)
- Vars
- P(c);SBLOCK::B(D)
- Refutation
- P(c);
- Try
- K(A);S_FLIGHT
- Vars
- S(a);N_GUARD::R1(B)
- S(a);N_GUARD::R1(B),XS(a)
- P(c);SBLOCK::B(D)
- Refutation
- P(c);
- Try
- B(D);
- Vars
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(c);SBLOCK::QAR2(C)
- Refutation
- P(c);
- Try
- R(B);
- Vars
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(c);SBLOCK::B(D)
- Refutation
- S(a);
- Try
- Q(C);
- Threat
- QAB1(C)
- Vars
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(c);::QAB1(C),XP(c)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(C);CHECK
- Vars
- K(b);P-FLIGHT::R1(B)
- Refutation
- K(b);S_FLIGHT,XQ(C)
- Try
- Q(C);XP(c)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- B(D);
- Vars
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- P(c);SBLOCK::QAB1(C)
- P(c);SBLOCK::B(D)
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).