MESON Chess Problem Database
Problem Display
PID: 93216 (K7/BB1N4/1r2PQ2/3p1p2/2n1k3/2p5/2P2PP1/8 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Skakbladet, 1985
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Kf4
- 2.Qh4#
- 1...Rb1
- 2.Qd4#
- 1...Rb2
- 2.Qd4#
- 1...Rb3
- 2.Qd4#
- 1...Rb4
- 2.Qd4#
- 1...Rb5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Rc6
- 2.Qd4#
- 1...Rd6
- 2.Qd4#
- 1...Rxe6
- 2.Qd4#
- 1...Rxb7
- 2.Qd4#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Sd6
- 2.Qe5#
- 1...f4
- 2.Sc5#
- 1...Kf4
- Tries
- 1.Kb8?
- 1...Kf4
- 2.Qh4#
- 1...Rxe6
- 2.Qd4#
- 1...Se5
- 2.Qxe5#
- 1...Rb1
- 2.Qd4#
- 1...Rb2
- 2.Qd4#
- 1...Rb3
- 2.Qd4#
- 1...Rb4
- 2.Qd4#
- 1...Rb5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Rc6
- 2.Qd4#
- 1...Rd6
- 2.Qd4#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...f4
- 2.Sc5#
- 1...Rxb7+!
- 1...Kf4
- 1.Bxb6?
- threat
- 2.Qd4#
- 1...Kf4
- 2.Qh4#
- 1...Se5
- 2.Qxe5#
- 1...f4
- 2.Sc5#
- 2.Qg6#
- 2.f3#
- 1...Sxb6+!
- threat
- 1.Bxd5+?
- 1...Kf4
- 2.Qh4#
- 1...Kxd5!
- 1...Kf4
- 1.Bc6?
- 1...Kf4
- 2.Qh4#
- 1...Rxc6
- 2.Qd4#
- 1...Se5
- 2.Qxe5#
- 1...Rb1
- 2.Qd4#
- 1...Rb2
- 2.Qd4#
- 1...Rb3
- 2.Qd4#
- 1...Rb4
- 2.Qd4#
- 1...Rb5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Rb7
- 2.Qd4#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...f4
- 2.Sc5#
- 1...Rb8+!
- 1...Kf4
- 1.Qxc3?
- threat
- 2.Qxc4#
- 1...Rxb7
- 2.Qd4#
- 2.Qf3#
- 1...Rb4
- 2.Qd4#
- 2.Qf3#
- 1...Rc6
- 2.Qd4#
- 2.Qf3#
- 1...Sb2
- 2.Qe5#
- 2.Qe3#
- 1...Sd2
- 2.Qe5#
- 2.Qe3#
- 1...Sa3
- 2.Qe5#
- 2.Qe3#
- 1...Se3
- 2.Qe5#
- 2.Qxe3#
- 1...Sa5
- 2.Qe5#
- 2.Qe3#
- 1...Se5
- 2.Qxe5#
- 2.Qe3#
- 1...Sd6
- 2.Qe5#
- 2.Qe3#
- 1...f4
- 2.Qd3#
- 1...Kf4!
- threat
- 1.Qh8?
- 1...Kf4
- 2.Qh4#
- 1...Rxe6
- 2.Qd4#
- 1...Rxb7
- 2.Qd4#
- 1...Se5
- 2.Qxe5#
- 1...Rb1
- 2.Qd4#
- 1...Rb2
- 2.Qd4#
- 1...Rb3
- 2.Qd4#
- 1...Rb4
- 2.Qd4#
- 1...Rb5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Rc6
- 2.Qd4#
- 1...Rd6
- 2.Qd4#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...f4!
- 1...Kf4
- 1.Qxf5+?
- 1...Kd4
- 2.Qd3#
- 2.Qg4#
- 2.Qf4#
- 2.Qxd5#
- 1...Kxf5!
- 1...Kd4
- 1.Qh6?
- 1...Kd4
- 2.Qf4#
- 1...Rxe6
- 2.f3#
- 1...Rxb7
- 2.f3#
- 1...Rb1
- 2.f3#
- 1...Rb2
- 2.f3#
- 1...Rb3
- 2.f3#
- 1...Rb4
- 2.f3#
- 1...Rb5
- 2.f3#
- 1...Ra6
- 2.f3#
- 1...Rc6
- 2.f3#
- 1...Rd6
- 2.f3#
- 1...Sb2
- 2.Qe3#
- 1...Sd2
- 2.Qe3#
- 1...Sa3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sa5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...Sd6
- 2.Qe3#
- 1...f4!
- 1...Kd4
- 1.e7?
- 1...Kf4
- 2.Qh4#
- 1...Rxb7
- 2.Qd4#
- 1...Se5
- 2.Qxe5#
- 1...f4
- 2.Sc5#
- 1...Rb1
- 2.Qd4#
- 1...Rb2
- 2.Qd4#
- 1...Rb3
- 2.Qd4#
- 1...Rb4
- 2.Qd4#
- 1...Rb5
- 2.Qd4#
- 1...Ra6
- 2.Qd4#
- 1...Rc6
- 2.Qd4#
- 1...Rd6
- 2.Qd4#
- 1...Re6
- 2.Qd4#
- 1...Sb2
- 2.Qe5#
- 1...Sd2
- 2.Qe5#
- 1...Sa3
- 2.Qe5#
- 1...Se3
- 2.Qe5#
- 1...Sa5
- 2.Qe5#
- 1...Sd6
- 2.Qe5#
- 1...Rxf6!
- 1...Kf4
- 1.Kb8?
- Keys
- 1.Qg5!
- 1...Kd4
- 2.Qf4#
- 1...Rxe6
- 2.f3#
- 1...Rxb7
- 2.f3#
- 1...Rb1
- 2.f3#
- 1...Rb2
- 2.f3#
- 1...Rb3
- 2.f3#
- 1...Rb4
- 2.f3#
- 1...Rb5
- 2.f3#
- 1...Ra6
- 2.f3#
- 1...Rc6
- 2.f3#
- 1...Rd6
- 2.f3#
- 1...Sb2
- 2.Qe3#
- 1...Sd2
- 2.Qe3#
- 1...Sa3
- 2.Qe3#
- 1...Se3
- 2.Qxe3#
- 1...Sa5
- 2.Qe3#
- 1...Se5
- 2.Qe3#
- 1...Sd6
- 2.Qe3#
- 1...f4
- 2.Qxd5#
- 1...Kd4
- 1.Qg5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 18
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- K(c);N_SPINP(d),P-FLIGHT,P_SPINP(e)::QAR2(E)
- R(f);::QAR1(E)
- R(f);P_PINB(F)::QAR1(E)
- R(f);N_SPINP(d)::QAR1(E)
- R(f);XP(D)::QAR1(E)
- R(f);N_SPINP(d),XB(G)::QAR1(E)
- S(b);N_GUARD::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- P(e);::S(H)
- Tries
- Try
- K(I);P-FLIGHT,P_SPINB(G)
- Vars
- K(c);N_SPINP(d),P-FLIGHT,P_SPINP(e)::QAR2(E)
- R(f);N_PINB(G),XP(D)::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- R(f);::QAR1(E)
- R(f);N_PINB(G)::QAR1(E)
- R(f);N_PINB(G),N_SPINP(d)::QAR1(E)
- S(b);N_GUARD::QAR1(E)
- P(e);::S(H)
- Refutation
- R(f);CHECK,N_SPINP(d),XB(G)
- Try
- B(F);XR(f)
- Threat
- QAR1(E)
- Vars
- K(c);N_SPINP(d),P-FLIGHT,P_SPINP(e)::QAR2(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- Refutation
- S(b);CHECK,XB(F)
- Try
- B(G);CHECK,XP(d)
- Vars
- K(c);P-FLIGHT,P_SPINP(e)::QAR2(E)
- Refutation
- K(c);S_FLIGHT,XB(G)
- Try
- B(G);
- Vars
- K(c);N_SPINP(d),P-FLIGHT,P_SPINP(e)::QAR2(E)
- R(f);N_SPINP(d),XB(G)::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- R(f);::QAR1(E)
- R(f);P_PINB(F)::QAR1(E)
- S(b);N_GUARD::QAR1(E)
- P(e);::S(H)
- Refutation
- R(f);CHECK
- Try
- Q(E);XP(a)
- Threat
- QAR2(E),XS(b)
- Vars
- P(e);SBLOCK::QAB1(E)
- Refutation
- K(c);N_SPINP(d),P-FLIGHT
- Try
- Q(E);
- Vars
- K(c);N_SPINP(d),P-FLIGHT::QAR2(E)
- R(f);XP(D)::QAR1(E)
- R(f);N_SPINP(d),XB(G)::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- R(f);::QAR1(E)
- R(f);P_PINB(F)::QAR1(E)
- R(f);N_SPINP(d)::QAR1(E)
- S(b);N_GUARD::QAR1(E)
- Refutation
- P(e);
- Try
- Q(E);CHECK,XP(e)
- Refutation
- K(c);N_SPINP(d),S_FLIGHT,XQ(E)
- Try
- Q(E);
- Vars
- K(c);N_SPINP(d),P-FLIGHT,P_SPINR(f)::QAR2(E)
- R(f);XP(D)::P(B)
- R(f);N_SPINP(d),XB(G)::P(B)
- R(f);::P(B)
- R(f);P_PINB(F)::P(B)
- R(f);N_SPINP(d)::P(B)
- S(b);N_GUARD::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- Refutation
- P(e);
- Try
- P(D);
- Vars
- K(c);N_SPINP(d),P-FLIGHT,P_SPINP(e)::QAR2(E)
- R(f);N_SPINP(d),XB(G)::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- P(e);::S(H)
- R(f);::QAR1(E)
- R(f);P_PINB(F)::QAR1(E)
- R(f);N_SPINP(d)::QAR1(E)
- S(b);N_GUARD::QAR1(E)
- Refutation
- R(f);XQ(E)
- Try
- Actual
- Q(E);
- Vars
- K(c);N_SPINP(d),P-FLIGHT,P_SPINR(f)::QAR2(E)
- R(f);XP(D)::P(B)
- R(f);N_SPINP(d),XB(G)::P(B)
- R(f);::P(B)
- R(f);P_PINB(F)::P(B)
- R(f);N_SPINP(d)::P(B)
- S(b);N_GUARD::QAR1(E)
- S(b);N_GUARD::QAR1(E),XS(b)
- P(e);OGATE,SBLOCK::QAB1(E),XP(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).