MESON Chess Problem Database
Problem Display
PID: 35616 (4bN1K/1p6/1qk1B3/BN2Q3/3P4/4n3/8/8 w - - 0 1)
Knoppel, Jan Heribert
Eskilstuna Kuriren, 1946
#2
7 + 5
| 3680 | Jan Knoppel Udvalgte Skakproblemer | 1955 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4
- 2.Sxd4#
- 1...Qxa5
- 2.Qc5#
- 1...Qc5
- 2.Qxc5#
- 1...Qa7
- 2.Sxa7#
- 1...Qc7
- 2.Sa7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Qxb5
- 2.Qc7#
- 1...Qa6
- 2.Qc5#
- 1...Bh5
- 2.Bd7#
- 1...Bg6
- 2.Bd7#
- 1...Bd7
- 2.Bxd7#
- 1...Bf7
- 2.Bd7#
- 1...Sd1
- 2.Qd5#
- 1...Sf1
- 2.Qd5#
- 1...Sc2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sf5
- 2.Qd5#
- 1...Qxd4
- Tries
- 1.Kg8?
- 1...Qxd4
- 2.Sxd4#
- 1...Qxa5
- 2.Qc5#
- 1...Qxb5
- 2.Qc7#
- 1...Qc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxd5#
- 1...Qa7
- 2.Sxa7#
- 1...Qc7
- 2.Sa7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Qa6
- 2.Qc5#
- 1...Bh5
- 2.Bd7#
- 1...Bg6
- 2.Bd7#
- 1...Bd7
- 2.Bxd7#
- 1...Sd1
- 2.Qd5#
- 1...Sf1
- 2.Qd5#
- 1...Sc2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sf5
- 2.Qd5#
- 1...Bf7+!
- 1...Qxd4
- 1.Sg6?
- threat
- 2.Se7#
- 1...Qxa5
- 2.Qc5#
- 1...Qc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxd5#
- 1...Qc7
- 2.Sa7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Sf5
- 2.Qd5#
- 1...Bxg6!
- threat
- 1.Sd7?
- threat
- 2.Sb8#
- 1...Qxa5
- 2.Qc5#
- 1...Qc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxd5#
- 1...Qa7
- 2.Sxa7#
- 1...Qc7
- 2.Sa7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Bxd7!
- threat
- 1.Bc4?
- threat
- 2.Qd6#
- 2.Qf6#
- 2.Qe6#
- 2.Qxe8#
- 1...Qxd4
- 2.Sxd4#
- 1...Qxa5
- 2.Qd6#
- 2.Qf6#
- 2.Qc5#
- 2.Qe6#
- 1...Qxb5
- 2.Bxb5#
- 2.Qf6#
- 2.Qc7#
- 2.Qe6#
- 1...Bh5
- 2.Qd6#
- 2.Qf6#
- 2.Qe6#
- 1...Qc5
- 2.Qc7#
- 2.Qxc5#
- 2.Qxe8#
- 1...Qc7
- 2.Sa7#
- 2.Qxc7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Bg6
- 2.Qd6#
- 2.Qf6#
- 2.Qe6#
- 1...Bd7
- 2.Qd6#
- 1...Bf7
- 2.Qd6#
- 1...Sg4
- 2.Qd6#
- 2.Qe4#
- 2.Qd5#
- 2.Qe6#
- 2.Qxe8#
- 1...Sd5
- 2.Qd6#
- 2.Qxd5#
- 2.Qe6#
- 2.Qxe8#
- 1...Sf5
- 2.Qe4#
- 2.Qd5#
- 2.Qxe8#
- 1...Sxc4!
- threat
- 1.Bg4?
- 1...Qxd4
- 2.Sxd4#
- 1...Qxa5
- 2.Qc5#
- 1...Qxb5
- 2.Qe6#
- 1...Qc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxe8#
- 1...Bh5
- 2.Bd7#
- 1...Qa7
- 2.Sxa7#
- 1...Qc7
- 2.Sa7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Qa6
- 2.Qc5#
- 1...Bg6
- 2.Bd7#
- 1...Bd7
- 2.Bxd7#
- 1...Bf7
- 2.Bd7#
- 1...Sd1
- 2.Bf3#
- 1...Sf1
- 2.Bf3#
- 1...Sc2
- 2.Bf3#
- 1...Sg2
- 2.Bf3#
- 1...Sc4
- 2.Bf3#
- 1...Sf5
- 2.Bf3#
- 1...Sxg4!
- 1...Qxd4
- 1.Bd5+?
- 1...Sxd5
- 2.Qxe8#
- 1...Kxb5!
- 1...Sxd5
- 1.Bf5?
- 1...Qxd4
- 2.Sxd4#
- 1...Qxa5
- 2.Qc5#
- 1...Qxb5
- 2.Qe6#
- 1...Qc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxe8#
- 1...Bh5
- 2.Bd7#
- 1...Qa7
- 2.Sxa7#
- 1...Qc7
- 2.Sa7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Qa6
- 2.Qc5#
- 1...Bg6
- 2.Bd7#
- 1...Bd7
- 2.Bxd7#
- 1...Bf7
- 2.Bd7#
- 1...Sd1
- 2.Be4#
- 1...Sf1
- 2.Be4#
- 1...Sc2
- 2.Be4#
- 1...Sg2
- 2.Be4#
- 1...Sc4
- 2.Be4#
- 1...Sg4
- 2.Be4#
- 1...Sxf5!
- 1...Qxd4
- 1.Qe4+?
- 1...Sd5
- 2.Qxd5#
- 1...Kxb5!
- 1...Sd5
- 1.Kg8?
- Keys
- 1.Bh3!
- 1...Qxd4
- 2.Sxd4#
- 1...Qxa5
- 2.Qc5#
- 1...Qxb5
- 2.Qe6#
- 1...Qc5
- 2.Qxc5#
- 1...Sd5
- 2.Qxe8#
- 1...Bh5
- 2.Bd7#
- 1...Qa7
- 2.Sxa7#
- 1...Qc7
- 2.Sa7#
- 2.Qc5#
- 1...Qd8
- 2.Sa7#
- 2.Qc5#
- 1...Qa6
- 2.Qc5#
- 1...Bg6
- 2.Bd7#
- 1...Bd7
- 2.Bxd7#
- 1...Bf7
- 2.Bd7#
- 1...Sd1
- 2.Bg2#
- 1...Sf1
- 2.Bg2#
- 1...Sc2
- 2.Bg2#
- 1...Sg2
- 2.Bxg2#
- 1...Sc4
- 2.Bg2#
- 1...Sg4
- 2.Bg2#
- 1...Sf5
- 2.Bg2#
- 1...Qxd4
- 1.Bh3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(b);P_PINQ(D),XP(A)::S(C),XQ(b)
- Q(b);N_GUARD,XB(B)::QAR1(D)
- Q(b);N_GUARD::QAR1(D),XQ(b)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD,SBLOCK,XS(C)::QAR1(D)
- Q(b);N_GUARD::QAR1(D)
- B(e);N_GUARD::B(E)
- B(e);N_GUARD::B(E),XB(e)
- S(a);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAB1(D),XS(a)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- Q(b);XP(A)::S(C),XQ(b)
- Q(b);N_GUARD,XB(B)::QAR1(D)
- Q(b);N_GUARD,SBLOCK,XS(C)::QAR1(D)
- Q(b);N_GUARD::QAR1(D),XQ(b)
- S(a);N_GUARD::QAB1(D),XS(a)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD::QAR1(D)
- B(e);N_GUARD::B(E)
- B(e);N_GUARD::B(E),XB(e)
- S(a);N_GUARD::QAB1(D)
- Refutation
- B(e);CHECK
- Try
- S(F);
- Threat
- S(F)
- Vars
- Q(b);N_GUARD,XB(B)::QAR1(D)
- Q(b);N_GUARD::QAR1(D),XQ(b)
- S(a);N_GUARD::QAB1(D),XS(a)
- S(a);N_GUARD::QAB1(D)
- Refutation
- B(e);XS(F)
- Try
- S(F);
- Threat
- S(F)
- Vars
- Q(b);N_GUARD,XB(B)::QAR1(D)
- Q(b);N_GUARD::QAR1(D),XQ(b)
- S(a);N_GUARD::QAB1(D),XS(a)
- Q(b);N_GUARD::S(C),XQ(b)
- Refutation
- B(e);XS(F)
- Try
- B(E);
- Threat
- DUALS(4)
- Vars
- Q(b);P_PINQ(D),XP(A)::S(C),XQ(b)
- B(e);::QAR1(D)
- Refutation
- S(a);XB(E)
- Try
- B(E);
- Vars
- Q(b);P_PINQ(D),XP(A)::S(C),XQ(b)
- Q(b);N_GUARD,XB(B)::QAR1(D)
- Q(b);SBLOCK,XS(C)::QAR2(D)
- Q(b);N_GUARD::QAR1(D),XQ(b)
- S(a);SBLOCK::QAB(D),XB(e)
- B(e);N_GUARD::B(E)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD::QAR1(D)
- B(e);N_GUARD::B(E),XB(e)
- S(a);N_GUARD::B(E)
- Refutation
- S(a);XB(E)
- Try
- B(E);CHECK
- Vars
- S(a);SBLOCK,XB(E)::QAB(D),XB(e)
- Refutation
- K(c);S_FLIGHT,XS(C)
- Try
- B(E);
- Vars
- Q(b);P_PINQ(D),XP(A)::S(C),XQ(b)
- Q(b);N_GUARD,XB(B)::QAR1(D)
- Q(b);SBLOCK,XS(C)::QAR2(D)
- Q(b);N_GUARD::QAR1(D),XQ(b)
- S(a);SBLOCK::QAB(D),XB(e)
- B(e);N_GUARD::B(E)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD::QAR1(D)
- B(e);N_GUARD::B(E),XB(e)
- S(a);N_GUARD::B(E)
- Refutation
- S(a);XB(E)
- Try
- Q(D);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAB1(D),XS(a)
- Refutation
- K(c);S_FLIGHT,XS(C)
- Try
- Actual
- B(E);
- Vars
- Q(b);P_PINQ(D),XP(A)::S(C),XQ(b)
- Q(b);N_GUARD,XB(B)::QAR1(D)
- Q(b);SBLOCK,XS(C)::QAR2(D)
- Q(b);N_GUARD::QAR1(D),XQ(b)
- S(a);SBLOCK::QAB(D),XB(e)
- B(e);N_GUARD::B(E)
- Q(b);N_GUARD::S(C),XQ(b)
- Q(b);N_GUARD::QAR1(D)
- B(e);N_GUARD::B(E),XB(e)
- S(a);N_GUARD::B(E)
- S(a);N_GUARD::B(E),XS(a)
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).