MESON Chess Problem Database
Problem Display
PID: 110635 (2N1k1N1/1n1pPp1n/8/8/4p3/4K3/4Q3/8 w - - 0 1)
Rusek, Jan Andrzej
Szachu, 1955
#2
5 + 6
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...d5
- 2.Qb5#
- 1...d6
- 2.Qb5#
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...Sa5
- Tries
- 1.Kd2?
- 1...d5
- 2.Qb5#
- 1...d6
- 2.Qb5#
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...e3+!
- 1...d5
- 1.Kf2?
- 1...d5
- 2.Qb5#
- 1...d6
- 2.Qb5#
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...e3+!
- 1...d5
- 1.Kd4?
- 1...d5
- 2.Qb5#
- 1...d6
- 2.Qb5#
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...e3!
- 1...d5
- 1.Kf4?
- 1...d5
- 2.Qb5#
- 1...d6
- 2.Qb5#
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...e3!
- 1...d5
- 1.Qb5?
- 1...f6
- 2.Qh5#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...f5!
- 1...f6
- 1.Qh5?
- 1...d6
- 2.Qb5#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...d5!
- 1...d6
- 1.Qa6?
- 1...d5
- 2.Qb5#
- 2.Qa4#
- 2.Qc6#
- 1...d6
- 2.Qb5#
- 2.Qa4#
- 2.Qc6#
- 1...f5
- 2.Qg6#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...f6!
- 1...d5
- 1.Kd2?
- Keys
- 1.Qd1!
- 1...d5
- 2.Qa4#
- 1...d6
- 2.Qa4#
- 1...f5
- 2.Qh5#
- 1...f6
- 2.Qh5#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sd8
- 2.Sd6#
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...d5
- 1.Qd1!
Anticipated by 17139(1903), 203561(1924)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- P(c);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- P(c);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Refutation
- P(a);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- P(c);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Refutation
- P(a);CHECK
- Try
- K(B);S_FLIGHT
- Vars
- P(c);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Refutation
- P(a);
- Try
- K(B);S_FLIGHT
- Vars
- P(c);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Refutation
- P(a);
- Try
- Q(A);P_PINP(c)
- Vars
- P(d);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Refutation
- P(d);
- Try
- Q(A);P_PINP(d)
- Vars
- P(c);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Refutation
- P(c);
- Try
- Q(A);
- Vars
- P(d);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
- Refutation
- P(d);
- Try
- Actual
- Q(A);
- Vars
- P(c);OGATEB::QAB(A)
- P(d);OGATEB::QAB(A)
- S(b);N_GUARD::S(D)
- S(b);N_GUARD::S(D),XS(b)
- S(e);N_GUARD::S(E)
- S(e);N_GUARD::S(E),XS(e)
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).