MESON Chess Problem Database
Problem Display
PID: 203416 (2n5/5p2/1pR2p2/1P2kB2/1Q6/2n1N3/8/K7 w - - 0 1)
Nanning, Willem
De Maasbode, 1924
#2
6 + 6
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sxb5
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...Sb1
- Tries
- 1.Sg4+?
- 1...Kd5
- 2.Qc4#
- 1...Kxf5!
- 1...Kd5
- 1.Bc2?
- 1...Sxb5
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sd5
- 2.Sg4#
- 2.Qe4#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...f5!
- 1...Sxb5
- 1.Bd3?
- 1...Sxb5
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sd5
- 2.Sg4#
- 2.Qe4#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...f5!
- 1...Sxb5
- 1.Bh7?
- 1...Sxb5
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sd5
- 2.Sg4#
- 2.Qe4#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...f5!
- 1...Sxb5
- 1.Rxb6?
- 1...Sxb5
- 2.Rxb5#
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sb1
- 2.Qe4#
- 1...Sd1
- 2.Qe4#
- 1...Sa2
- 2.Qe4#
- 1...Se2
- 2.Qe4#
- 1...Sa4
- 2.Qe4#
- 1...Sd5
- 2.Qe4#
- 1...Sd6
- 2.Qxd6#
- 1...Sa7
- 2.Qd6#
- 1...Se7
- 2.Qd6#
- 1...Sxb6!
- 1...Sxb5
- 1.Sg4+?
- Keys
- 1.Rc4!
- 1...Sxb5
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sb1
- 2.Re4#
- 1...Sd1
- 2.Re4#
- 1...Sa2
- 2.Re4#
- 1...Se2
- 2.Re4#
- 1...Sa4
- 2.Re4#
- 1...Sd5
- 2.Re4#
- 1...Sd6
- 2.Qxc3#
- 1...Sa7
- 2.Qe7#
- 1...Se7
- 2.Qxe7#
- 1...Sxb5
- 1.Rc4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 11
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- S(a);N_GUARD,XP(D)::QAR1(C)
- S(f);N_GUARD::QAB1(C),XS(f)
- S(f);N_GUARD::QAB1(C)
- Tries
- Try
- S(B);CHECK
- Vars
- K(b);P-FLIGHT::QAB1(C)
- Refutation
- K(b);P-FLIGHT,XB(E)
- Try
- B(E);
- Vars
- S(a);N_GUARD,XP(D)::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- S(f);N_GUARD::QAB1(C),XS(f)
- S(a);N_GUARD::QAR1(C)
- S(f);N_GUARD::QAB1(C)
- Refutation
- P(d);
- Try
- B(E);
- Vars
- S(a);N_GUARD,XP(D)::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- S(f);N_GUARD::QAB1(C),XS(f)
- S(a);N_GUARD::QAR1(C)
- S(f);N_GUARD::QAB1(C)
- Refutation
- P(d);
- Try
- B(E);
- Vars
- S(a);N_GUARD,XP(D)::QAR1(C)
- S(a);N_GUARD::QAR1(C),XS(a)
- S(f);N_GUARD::QAB1(C),XS(f)
- S(a);N_GUARD::QAR1(C)
- S(f);N_GUARD::QAB1(C)
- Refutation
- P(d);
- Try
- R(F);XP(c)
- Vars
- S(a);N_GUARD::QAR1(C),XS(a)
- S(a);N_GUARD::QAR1(C)
- S(f);N_GUARD::QAB1(C),XS(f)
- S(f);N_GUARD::QAB1(C)
- Refutation
- S(f);XR(F)
- Try
- Actual
- R(F);
- Vars
- S(a);N_GUARD,XP(D)::R1(F)
- S(a);N_GUARD::R1(F),XS(a)
- S(a);N_GUARD::R1(F)
- S(f);SBLOCK::QAB(C),XS(a)
- S(f);N_GUARD::QAR2(C)
- S(f);N_GUARD::QAR2(C),XS(f)
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).