MESON Chess Problem Database
Problem Display
PID: 219474 (8/3Qn3/R1B5/2k2n2/8/2K5/8/8 w - - 0 1)
Kniest, Peter
Schach-Report, 1992
#2
4 + 3
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Se3
- 2.Qd4#
- 2.Qxe7#
- 1...Sg3
- 2.Qd4#
- 2.Qxe7#
- 1...Sd4
- 2.Qxd4#
- 2.Qxe7#
- 1...Sh4
- 2.Qd4#
- 2.Qxe7#
- 1...Sd6
- 2.Qa7#
- 1...Sh6
- 2.Qd4#
- 2.Qxe7#
- 1...Sg7
- 2.Qd4#
- 2.Qxe7#
- 1...Sd5+
- 2.Qxd5#
- 1...Sxc6
- 2.Qxc6#
- 1...Sg6
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...Se3
- Tries
- 1.Ba4?
- threat
- 2.Qb5#
- 1...Sd6
- 2.Qxd6#
- 1...Sd4
- 2.Qxd4#
- 2.Qd6#
- 1...Sc6
- 2.Rxc6#
- 2.Qxc6#
- 1...Sd5+!
- threat
- 1.Qd1?
- 1...Sd5+
- 2.Qxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Qg1#
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sg6
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...Sxc6!
- 1...Sd5+
- 1.Qd2?
- 1...Sd5+
- 2.Qxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Qe3#
- 2.Qf2#
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sg6
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...Sxc6!
- 1...Sd5+
- 1.Qd3?
- 1...Sd5+
- 2.Qxd5#
- 1...Sd4
- 2.Qxd4#
- 1...Se3
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sh4
- 2.Qd4#
- 1...Sd6
- 2.Qe3#
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...Sg6
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...Sxc6!
- 1...Sd5+
- 1.Qc7?
- threat
- 2.Ra5#
- 1...Sd4
- 2.Qxe7#
- 1...Sd6
- 2.Qb6#
- 2.Qa7#
- 1...Sd5+!
- threat
- 1.Qxe7+?
- 1...Sd6
- 2.Qe3#
- 2.Qe5#
- 2.Qa7#
- 1...Sxe7!
- 1...Sd6
- 1.Qd8?
- 1...Sd5+
- 2.Qxd5#
- 1...Se3
- 2.Qxe7#
- 2.Qd4#
- 1...Sg3
- 2.Qxe7#
- 2.Qd4#
- 1...Sd4
- 2.Qxe7#
- 2.Qxd4#
- 1...Sh4
- 2.Qxe7#
- 2.Qd4#
- 1...Sd6
- 2.Qb6#
- 1...Sh6
- 2.Qxe7#
- 2.Qd4#
- 1...Sg7
- 2.Qxe7#
- 2.Qd4#
- 1...Sg6
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 1...Sg8
- 2.Qd5#
- 1...Sxc6!
- 1...Sd5+
- 1.Ba4?
- Keys
- 1.Qe6!
- 1...Sd5+
- 2.Qxd5#
- 1...Sxc6
- 2.Qxc6#
- 1...Se3
- 2.Qxe7#
- 1...Sg3
- 2.Qxe7#
- 1...Sd4
- 2.Qxe7#
- 1...Sh4
- 2.Qxe7#
- 1...Sd6
- 2.Qe3#
- 1...Sh6
- 2.Qxe7#
- 1...Sg7
- 2.Qxe7#
- 1...Sg6
- 2.Qd5#
- 1...Sc8
- 2.Qd5#
- 2.Qe5#
- 1...Sg8
- 2.Qd5#
- 2.Qe5#
- 1...Sd5+
- 1.Qe6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- S(b);SBLOCK::QAB(D)
- S(c);CHECK,N_GUARD::QAR1(D),XS(c)
- S(c);OGATE,XB(C)::QAR1(D),XS(c)
- S(c);N_GUARD::QAR1(D)
- Tries
- Try
- B(C);
- Threat
- QAR1(D)
- Vars
- S(b);N_GUARD::QAB1(D),XS(b)
- Refutation
- S(c);CHECK
- Try
- Q(D);
- Vars
- S(c);CHECK,N_GUARD::QAR1(D),XS(c)
- S(b);N_GUARD::QAB1(D),XS(b)
- S(b);N_GUARD::QAB1(D)
- S(c);N_GUARD::QAR1(D)
- Refutation
- S(c);XB(C)
- Try
- Q(D);
- Vars
- S(c);CHECK,N_GUARD::QAR1(D),XS(c)
- S(b);N_GUARD::QAB1(D),XS(b)
- S(b);N_GUARD::QAB1(D)
- S(c);N_GUARD::QAR1(D)
- Refutation
- S(c);XB(C)
- Try
- Q(D);
- Vars
- S(c);CHECK,N_GUARD::QAR1(D),XS(c)
- S(b);N_GUARD::QAB1(D),XS(b)
- S(b);N_GUARD::QAB1(D)
- S(c);N_GUARD::QAR1(D)
- Refutation
- S(c);XB(C)
- Try
- Q(D);
- Threat
- R(B)
- Vars
- S(b);N_GUARD::QAB(D),XS(c)
- Refutation
- S(c);CHECK
- Try
- Q(D);CHECK,XS(c)
- Refutation
- S(b);XQ(D)
- Try
- Q(D);
- Vars
- S(c);CHECK,N_GUARD::QAR1(D),XS(c)
- S(b);SBLOCK::QAB1(D)
- S(c);N_GUARD::QAR1(D)
- Refutation
- S(c);XB(C)
- Try
- Actual
- Q(D);
- Vars
- S(c);CHECK,N_GUARD::QAR1(D),XS(c)
- S(c);OGATE,XB(C)::QAR1(D),XS(c)
- S(b);N_GUARD::QAB(D),XS(c)
- S(b);N_GUARD,SBLOCK::QAB(D)
- S(c);N_GUARD::QAR1(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).