MESON Chess Problem Database
Problem Display
PID: 110790 (8/4p3/K1N1Np2/P2pQR2/1pk5/Bpnp4/1RnP4/8 w - - 0 1)
Fjellstrom, Zakarias
Springaren, 1952
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sxa3
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sb1
- 2.Qxd5#
- 1...Sd1
- 2.Qxd5#
- 1...Sa2
- 2.Qxd5#
- 1...Se2
- 2.Qxd5#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...bxa3
- 2.Qxc3#
- 1...d4
- 2.Qc5#
- 1...fxe5
- 2.Sxe5#
- 1...Sa1
- Tries
- 1.Kb6?
- 1...Sxa3
- 2.Qd4#
- 1...bxa3
- 2.Qxc3#
- 1...fxe5
- 2.Sxe5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sb1
- 2.Qxd5#
- 1...Sd1
- 2.Qxd5#
- 1...Sa2
- 2.Qxd5#
- 1...Se2
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...d4
- 2.Qc5#
- 1...Sa4+!
- 1...Sxa3
- 1.Sa7?
- threat
- 2.Qc7#
- 1...bxa3
- 2.Qxc3#
- 1...Sd4
- 2.Qxd4#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...fxe5!
- threat
- 1.Sxe7?
- threat
- 2.Qc7#
- 1...bxa3
- 2.Qxc3#
- 1...Sd4
- 2.Qxd4#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...fxe5!
- threat
- 1.Sb8?
- threat
- 2.Qc7#
- 1...bxa3
- 2.Qxc3#
- 1...Sd4
- 2.Qxd4#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...fxe5!
- threat
- 1.Scd8?
- threat
- 2.Qc7#
- 1...bxa3
- 2.Qxc3#
- 1...Sd4
- 2.Qxd4#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...fxe5!
- threat
- 1.Rb1?
- 1...Sxa3
- 2.Qd4#
- 1...Sxb1
- 2.Qxd5#
- 1...bxa3
- 2.Qxc3#
- 1...fxe5
- 2.Sxe5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd1
- 2.Qxd5#
- 1...Sa2
- 2.Qxd5#
- 1...Se2
- 2.Qxd5#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...d4
- 2.Qc5#
- 1...b2!
- 1...Sxa3
- 1.Rxc2?
- threat
- 2.Qd4#
- 2.Qxd5#
- 1...dxc2
- 2.Qd4#
- 1...fxe5
- 2.Sxe5#
- 1...b2
- 2.Qxd5#
- 1...d4
- 2.Qxd4#
- 2.Qb5#
- 2.Qc5#
- 2.Qd5#
- 1...bxc2!
- threat
- 1.Rf4+?
- 1...Sd4
- 2.Rxd4#
- 2.Qxd4#
- 1...d4
- 2.Qc5#
- 1...Se4!
- 1...Sd4
- 1.Rh5?
- 1...Sxa3
- 2.Qd4#
- 1...bxa3
- 2.Qxc3#
- 1...fxe5
- 2.Sxe5#
- 1...Sb1
- 2.Qxd5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Se3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd1
- 2.Qxd5#
- 1...Sa2
- 2.Qxd5#
- 1...Se2
- 2.Qxd5#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...Sb5
- 2.Qxd5#
- 1...d4
- 2.Qc5#
- 1...f5!
- 1...Sxa3
- 1.Qf4+?
- 1...Sd4
- 2.Qxd4#
- 1...d4
- 2.Rc5#
- 1...Se4!
- 1...Sd4
- 1.Qd6?
- threat
- 2.Qc5#
- 1...Sa4
- 2.Qxd5#
- 1...Se4
- 2.Qxd5#
- 1...exd6!
- threat
- 1.Qxf6?
- threat
- 2.Se5#
- 1...bxa3
- 2.Qxc3#
- 1...d4
- 2.Rc5#
- 1...exf6!
- threat
- 1.Qc7?
- threat
- 2.Sxb4#
- 2.Scd4#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Scd8#
- 1...Sxa3
- 2.Scd4#
- 2.Se5#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Scd8#
- 1...Sd4
- 2.Scxd4#
- 2.Se5#
- 1...Sa4
- 2.Se5#
- 1...Se4
- 2.Se5#
- 1...Sb5
- 2.Se5#
- 1...d4
- 2.Sxb4#
- 2.Scxd4#
- 2.Sa7#
- 2.Sxe7#
- 2.Sb8#
- 2.Scd8#
- 2.Rc5#
- 1...bxa3!
- threat
- 1.Qe4+?
- 1...Sd4
- 2.Qxd4#
- 1...dxe4
- 2.Rc5#
- 1...d4
- 2.Rc5#
- 1...Sxe4!
- 1...Sd4
- 1.Kb6?
- Keys
- 1.Qb8!
- 1...Sxa3
- 2.Qxb4#
- 1...bxa3
- 2.Qxb3#
- 1...Sb1
- 2.Qb5#
- 1...Sa1
- 2.Qxb4#
- 1...Se1
- 2.Qxb4#
- 1...Se3
- 2.Qxb4#
- 1...Sd4
- 2.Qxb4#
- 1...Sd1
- 2.Qb5#
- 1...Sa2
- 2.Qb5#
- 1...Se2
- 2.Qb5#
- 1...Sa4
- 2.Qb5#
- 1...Se4
- 2.Qb5#
- 1...Sb5
- 2.Qxb5#
- 1...d4
- 2.Rc5#
- 1...Sxa3
- 1.Qb8!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD,XB(C)::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(g)
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- P(g);OGATE::QAR1(E)
- P(h);XQ(E)::S(H),XP(h)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- S(a);N_GUARD,XB(C)::QAR1(E)
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- P(h);XQ(E)::S(H),XP(h)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(g)
- P(g);OGATE::QAR1(E)
- Refutation
- S(c);CHECK
- Try
- S(H);
- Threat
- QAR(E)
- Vars
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(g)
- Refutation
- P(h);XQ(E)
- Try
- S(H);XP(i)
- Threat
- QAR(E)
- Vars
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(g)
- Refutation
- P(h);XQ(E)
- Try
- S(H);
- Threat
- QAR(E)
- Vars
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(g)
- Refutation
- P(h);XQ(E)
- Try
- S(H);
- Threat
- QAR(E)
- Vars
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(g)
- Refutation
- P(h);XQ(E)
- Try
- R(A);
- Vars
- S(a);N_GUARD,XB(C)::QAR1(E)
- S(c);N_GUARD,XR(A)::QAB1(E),XP(g)
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- P(h);XQ(E)::S(H),XP(h)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(g)
- P(g);OGATE::QAR1(E)
- Refutation
- P(b);
- Try
- R(A);P_PINS(c),XS(a)
- Threat
- DUALS(2)
- Vars
- P(d);N_SPINS(c),XR(A)::QAR1(E)
- P(h);XQ(E)::S(H),XP(h)
- P(b);::QAB1(E),XP(g)
- Refutation
- P(b);N_SPINS(c),XR(A)
- Try
- R(F);CHECK
- Vars
- P(g);OGATE,P_SPINP(g)::QAR1(E)
- Refutation
- S(c);P_SPINS(c)
- Try
- R(F);
- Vars
- S(a);N_GUARD,XB(C)::QAR1(E)
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- P(h);XQ(E)::S(H),XP(h)
- S(c);N_GUARD::QAB1(E),XP(g)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- P(g);OGATE::QAR1(E)
- Refutation
- P(h);
- Try
- Q(E);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(E),XS(a)
- P(g);OGATE,P_SPINP(g)::R1(F)
- Refutation
- S(c);P_SPINS(c)
- Try
- Q(E);
- Threat
- QAR1(E)
- Vars
- S(c);N_GUARD::QAB1(E),XP(g)
- Refutation
- P(i);XQ(E)
- Try
- Q(E);XP(h)
- Threat
- S(H)
- Vars
- P(e);N_GUARD,XB(C)::QAR1(E),XS(c)
- P(g);OGATE::R1(F)
- Refutation
- P(i);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(7)
- Vars
- S(c);::QAR(E)+S(H),DCHECK
- Refutation
- P(e);XB(C)
- Try
- Q(E);CHECK
- Vars
- S(a);N_GUARD,P_SPINS(a)::QAR1(E),XS(a)
- P(g);OGATE,XQ(E)::R1(F)
- P(g);OGATE,P_SPINP(g)::R1(F)
- Refutation
- S(c);XQ(E)
- Try
- Actual
- Q(E);
- Vars
- S(a);N_GUARD,XB(C)::QAR1(E),XP(e)
- P(e);OGATE,XB(C)::QAB1(E),XP(b)
- S(c);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAR1(E),XP(e)
- S(c);N_GUARD::QAB1(E),XS(c)
- P(g);OGATE::R1(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).