MESON Chess Problem Database
Problem Display
PID: 10256 (4K3/1pQB4/2p5/2k5/2p2n2/2Nn2B1/2N5/8 w - - 0 1)
Strydom, Jan
Die Welt, 1963
#2
6 + 6
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se5
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Se6
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b5
- 2.Qxc6#
- 1...b6
- 2.Qxc6#
- 1...Sc1
- Tries
- 1.Kf7?
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Se6
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b5
- 2.Qxc6#
- 1...b6
- 2.Qxc6#
- 1...Se5+!
- 1...Sc1
- 1.Kd8?
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se5
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b5
- 2.Qxc6#
- 1...b6
- 2.Qxc6#
- 1...Se6+!
- 1...Sc1
- 1.Bh2?
- 1...Sc1
- 2.Bg1#
- 1...Se1
- 2.Bg1#
- 1...Sb2
- 2.Bg1#
- 1...Sb4
- 2.Bg1#
- 1...Se5
- 2.Bg1#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Se6
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b5
- 2.Qxc6#
- 1...b6
- 2.Qxc6#
- 1...Sf2!
- 1...Sc1
- 1.Bxf4?
- threat
- 2.Be3#
- 2.Bd6#
- 1...Se5
- 2.Be3#
- 1...Sxf4!
- threat
- 1.Bh3?
- 1...Sxh3
- 2.Bd6#
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se5
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Se6
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b6
- 2.Qe7#
- 1...b5!
- 1...Sxh3
- 1.Bg4?
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se5
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Se6
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b6
- 2.Qe7#
- 1...b5!
- 1...Sc1
- 1.Bf5?
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se5
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Se6
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b6
- 2.Qe7#
- 1...b5!
- 1...Sc1
- 1.Bxc6?
- threat
- 2.Sa4#
- 2.Se4#
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Ba4#
- 2.Be4#
- 2.Bb5#
- 2.Bd5#
- 2.Bxb7#
- 2.Bd7#
- 1...b5
- 2.Se4#
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Be4#
- 2.Bxb5#
- 2.Bd5#
- 2.Bb7#
- 2.Bd7#
- 2.Ba8#
- 1...Sb2
- 2.Se4#
- 2.Bf2#
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Ba4#
- 2.Be4#
- 2.Bb5#
- 2.Bd5#
- 2.Bxb7#
- 2.Bd7#
- 1...Sf2
- 2.Sa4#
- 2.Bxf2#
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Ba4#
- 2.Be4#
- 2.Bb5#
- 2.Bd5#
- 2.Bxb7#
- 2.Bd7#
- 1...Sb4
- 2.Sa4#
- 2.Se4#
- 2.Bf2#
- 1...Se5
- 2.Sa4#
- 2.Se4#
- 2.Bf2#
- 1...Sg2
- 2.Sa4#
- 2.Se4#
- 2.Bd6#
- 2.Bxg2#
- 2.Bf3#
- 2.Ba4#
- 2.Be4#
- 2.Bb5#
- 2.Bd5#
- 2.Bxb7#
- 2.Bd7#
- 1...Sd5
- 2.Sa4#
- 2.Se4#
- 2.Bd6#
- 2.Bxd5#
- 1...Se6
- 2.Sa4#
- 2.Se4#
- 2.Bd6#
- 1...b6
- 2.Sa4#
- 2.Se4#
- 2.Bh1#
- 2.Bg2#
- 2.Bf3#
- 2.Ba4#
- 2.Be4#
- 2.Bb5#
- 2.Bd5#
- 2.Bb7#
- 2.Bd7#
- 2.Ba8#
- 1...bxc6!
- threat
- 1.Bc8?
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se5
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Se6
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b6
- 2.Qe7#
- 1...b5!
- 1...Sc1
- 1.Qa5+?
- 1...Kd6
- 2.Se4#
- 1...b5!
- 1...Kd6
- 1.Qxb7?
- threat
- 2.Qxc6#
- 1...Sb4
- 2.Qxb4#
- 1...Se5
- 2.Qb4#
- 1...Kd6!
- threat
- 1.Kf7?
- Keys
- 1.Be6!
- 1...Sxe6
- 2.Bd6#
- 1...b5
- 2.Se4#
- 1...Sc1
- 2.Bf2#
- 1...Se1
- 2.Bf2#
- 1...Sb2
- 2.Bf2#
- 1...Sf2
- 2.Bxf2#
- 1...Sb4
- 2.Bf2#
- 1...Se5
- 2.Bf2#
- 1...Se2
- 2.Bd6#
- 1...Sg2
- 2.Bd6#
- 1...Sh3
- 2.Bd6#
- 1...Sd5
- 2.Bd6#
- 1...Sh5
- 2.Bd6#
- 1...Sg6
- 2.Bd6#
- 1...b6
- 2.Qe7#
- 1...Sxe6
- 1.Be6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);N_GUARD::QAR1(D),XP(e)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);N_GUARD::QAR1(D),XP(e)
- Refutation
- S(a);CHECK
- Try
- K(F);P-FLIGHT
- Vars
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);N_GUARD::QAR1(D),XP(e)
- Refutation
- S(c);CHECK
- Try
- B(C);
- Vars
- S(a);N_GUARD::B(C)
- S(c);OGATE::B(C)
- P(f);N_GUARD::QAR1(D),XP(e)
- Refutation
- S(a);
- Try
- B(C);XS(c)
- Threat
- DUALS(2)
- Vars
- S(a);::B(C)
- Refutation
- S(a);XB(C)
- Try
- B(E);
- Vars
- S(c);OGATE,XB(E)::B(C)
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);SBLOCK::QAB(D)
- Refutation
- P(f);
- Try
- B(E);
- Vars
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);SBLOCK::QAB(D)
- Refutation
- P(f);
- Try
- B(E);
- Vars
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);SBLOCK::QAB(D)
- Refutation
- P(f);
- Try
- B(E);XP(e)
- Threat
- DUALS(11)
- Refutation
- P(f);P_SPINP(f),XB(E)
- Try
- B(E);
- Vars
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);SBLOCK::QAB(D)
- Refutation
- P(f);
- Try
- Q(D);CHECK,N_PINP(e)
- Vars
- K(d);P_SPINS(c),S_FLIGHT::S(B)
- Refutation
- P(f);P_SPINP(f)
- Try
- Q(D);N_PINP(e),XP(f)
- Threat
- QAR1(D),XP(e)
- Vars
- S(a);N_GUARD::QAB1(D),XS(a)
- S(a);N_GUARD::QAB1(D)
- Refutation
- K(d);P_SPINS(c),S_FLIGHT
- Try
- Actual
- B(E);
- Vars
- S(c);OGATE,XB(E)::B(C)
- P(f);SBLOCK::S(B)
- S(a);N_GUARD::B(C)
- S(a);N_GUARD::B(C),XS(a)
- S(c);OGATE::B(C)
- P(f);SBLOCK::QAB(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).