MESON Chess Problem Database
Problem Display
PID: 203232 (8/8/8/8/2n5/3k1P2/2R2Q2/2K5 w - - 0 1)
Lester, William Edward
Chess Amateur (The), 1924
#2
4 + 2
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sb2
- 2.Qd2#
- 1...Sd2
- 2.Qxd2#
- 1...Sa3
- 2.Qd2#
- 1...Se3
- 2.Qd2#
- 1...Sa5
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sb6
- 2.Qd2#
- 1...Sd6
- 2.Qd2#
- 1...Sb2
- Tries
- 1.Kb1?
- 1...Sd2+
- 2.Qxd2#
- 1...Se3
- 2.Qd2#
- 1...Sb2
- 2.Qd2#
- 1...Sa5
- 2.Qd2#
- 1...Se5
- 2.Qd2#
- 1...Sb6
- 2.Qd2#
- 1...Sd6
- 2.Qd2#
- 1...Sa3+!
- 1...Sd2+
- 1.Qe1?
- threat
- 2.Qc3#
- 2.Qe4#
- 1...Sd2
- 2.Qxd2#
- 1...Se3
- 2.Qd2#
- 2.Qc3#
- 1...Sd6
- 2.Qd2#
- 2.Qc3#
- 1...Kd4!
- threat
- 1.Kb1?
- Keys
- 1.Qc5!
- 1...Sd2
- 2.Rxd2#
- 1...Sb2
- 2.Rd2#
- 2.Qc3#
- 1...Sa3
- 2.Rd2#
- 2.Qc3#
- 1...Se3
- 2.Rd2#
- 2.Qc3#
- 1...Sa5
- 2.Rd2#
- 2.Qc3#
- 1...Se5
- 2.Rd2#
- 2.Qc3#
- 1...Sb6
- 2.Rd2#
- 2.Qc3#
- 1...Sd6
- 2.Rd2#
- 2.Qc3#
- 1...Sd2
- 1.Qc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- S(b);N_GUARD::QAR1(C)
- S(b);N_GUARD::QAR1(C),XS(b)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- S(b);CHECK,N_GUARD::QAR1(C),XS(b)
- S(b);N_GUARD::QAR1(C)
- Refutation
- S(b);CHECK
- Try
- Q(C);
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD::QAR1(C),XS(b)
- Refutation
- K(a);P-FLIGHT
- Try
- Actual
- Q(C);
- Vars
- S(b);N_GUARD::R1(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).