MESON Chess Problem Database
Problem Display
PID: 158043 (2K1N3/2P5/1Qp5/N1nknB2/2p2P2/1pP2P2/1P6/8 w - - 0 1)
Andersson, Sven Tore
Problem (Zagreb), 1959
#2
10 + 6
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Scd3
- 2.Qd4#
- 1...Sa4
- 2.Qd4#
- 1...Se4
- 2.Qd4#
- 2.fxe4#
- 1...Sa6
- 2.Qd4#
- 1...Se6
- 2.Be4#
- 1...Sb7
- 2.Qd4#
- 1...Scd7
- 2.Qd4#
- 1...Sed3
- 2.Qxc6#
- 1...Sxf3
- 2.Qxc6#
- 1...Sg4
- 2.Qxc6#
- 1...Sg6
- 2.Qxc6#
- 1...Sed7
- 2.Qxc6#
- 1...Sf7
- 2.Qxc6#
- 1...Scd3
- Tries
- 1.Sxc6?
- threat
- 2.Sb4#
- 2.Se7#
- 1...Scd3
- 2.Se7#
- 1...Sa6
- 2.Se7#
- 1...Sed3
- 2.Se7#
- 1...Sg6
- 2.Sb4#
- 1...Sxc6!
- threat
- 1.Sb7?
- threat
- 2.Sf6#
- 2.Qxc5#
- 1...Sxb7
- 2.Qd4#
- 1...Scd3
- 2.Sf6#
- 2.Qd4#
- 1...Sa4
- 2.Sf6#
- 2.Qd4#
- 1...Se4
- 2.Qd4#
- 2.fxe4#
- 1...Sa6
- 2.Sf6#
- 2.Qd4#
- 1...Se6
- 2.Sf6#
- 2.Be4#
- 1...Scd7
- 2.Qd4#
- 1...Sed3
- 2.Sf6#
- 1...Sg4
- 2.Qxc5#
- 1...Sed7!
- threat
- 1.Bh3?
- 1...Sxf3
- 2.Qxc6#
- 1...Sg4
- 2.Qxc6#
- 1...Scd3
- 2.Qd4#
- 1...Sa4
- 2.Qd4#
- 1...Se4
- 2.Qd4#
- 1...Sa6
- 2.Qd4#
- 1...Sb7
- 2.Qd4#
- 1...Scd7
- 2.Qd4#
- 1...Sed3
- 2.Qxc6#
- 1...Sg6
- 2.Qxc6#
- 1...Sed7
- 2.Qxc6#
- 1...Sf7
- 2.Qxc6#
- 1...Se6!
- 1...Sxf3
- 1.Bg4?
- 1...Sxf3
- 2.Qxc6#
- 1...Sxg4
- 2.Qxc6#
- 1...Scd3
- 2.Qd4#
- 1...Sa4
- 2.Qd4#
- 1...Se4
- 2.Qd4#
- 1...Sa6
- 2.Qd4#
- 1...Sb7
- 2.Qd4#
- 1...Scd7
- 2.Qd4#
- 1...Sed3
- 2.Qxc6#
- 1...Sg6
- 2.Qxc6#
- 1...Sed7
- 2.Qxc6#
- 1...Sf7
- 2.Qxc6#
- 1...Se6!
- 1...Sxf3
- 1.Qb5?
- 1...Sxf3
- 2.Qxc4#
- 2.Qxc6#
- 1...Sd3
- 2.Qxc4#
- 2.Qxc6#
- 1...Sg4
- 2.Qxc4#
- 2.Qxc6#
- 1...Sg6
- 2.Qxc4#
- 2.Qxc6#
- 1...Sd7
- 2.Qxc4#
- 2.Qxc6#
- 1...Sf7
- 2.Qxc4#
- 2.Qxc6#
- 1...cxb5!
- 1...Sxf3
- 1.Sxc6?
- Keys
- 1.Qb4!
- 1...Sxf3
- 2.Qxc4#
- 1...Se6
- 2.Sf6#
- 2.Be4#
- 2.Qd6#
- 1...Scd3
- 2.Sf6#
- 2.Qd6#
- 1...Sa4
- 2.Sf6#
- 2.Qd6#
- 1...Se4
- 2.fxe4#
- 1...Sa6
- 2.Sf6#
- 2.Qd6#
- 1...Sb7
- 2.Sf6#
- 1...Scd7
- 2.Qd6#
- 1...Sed3
- 2.Qxc4#
- 1...Sg4
- 2.Qxc4#
- 1...Sg6
- 2.Qxc4#
- 1...Sed7
- 2.Qxc4#
- 1...Sf7
- 2.Qxc4#
- 1...Sxf3
- 1.Qb4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 8
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- S(c);OGATE::QAR1(G)
- S(c);N_GUARD,SBLOCK::B(F)
- S(e);N_GUARD::QAB1(G),XP(f)
- S(e);N_GUARD,XP(C)::QAB1(G),XP(f)
- Tries
- Try
- S(E);XP(f)
- Threat
- DUALS(2)
- Vars
- S(c);::S(E)
- S(e);::S(E)
- Refutation
- S(e);XS(E)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- S(c);OGATE,XS(E)::QAR1(G)
- S(c);OGATE::QAR1(G)
- S(e);::S(J)
- S(e);::QAR1(G),XS(c)
- Refutation
- S(e);
- Try
- B(F);
- Vars
- S(e);N_GUARD,XP(C)::QAB1(G),XP(f)
- S(e);N_GUARD::QAB1(G),XP(f)
- S(c);OGATE::QAR1(G)
- Refutation
- S(c);
- Try
- B(F);
- Vars
- S(e);N_GUARD,XP(C)::QAB1(G),XP(f)
- S(e);N_GUARD,XB(F)::QAB1(G),XP(f)
- S(c);OGATE::QAR1(G)
- S(e);N_GUARD::QAB1(G),XP(f)
- Refutation
- S(c);
- Try
- Q(G);P_PINS(c)
- Refutation
- P(f);N_SPINS(c),XQ(G)
- Try
- Actual
- Q(G);
- Vars
- S(e);N_GUARD,XP(C)::QAB1(G),XP(b)
- S(c);OGATE::P(C),XS(c)
- S(c);::S(J)
- S(c);OGATE::QAR1(G)
- S(e);N_GUARD::QAB1(G),XP(b)
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).