MESON Chess Problem Database
Problem Display
PID: 228010 (1N6/2b1Q3/1r3p2/R2B4/3k2r1/3Pp1R1/1P2p3/K1N2bq1 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Deutsche Schachzeitung, 1969
#2
9 + 9
| 15148 | Sadier Collection | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Qxe3#
- 1...Qh1
- 2.Qxe3#
- 1...Qg2
- 2.Qxe3#
- 1...Rxg3
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Rg5
- 2.Qe4#
- 1...Rg6
- 2.Qe4#
- 1...Rg7
- 2.Qe4#
- 1...Rg8
- 2.Qe4#
- 1...Rb3
- 2.Sc6#
- 1...Rb4
- 2.Sc6#
- 1...Rc6
- 2.Sxc6#
- 1...Rb7
- 2.Sc6#
- 1...Bf4
- 2.Qe4#
- 1...Be5
- 2.Qc5#
- 1...Qh2
- Tries
- 1.Bh1?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Qxh1
- 2.Qc5#
- 2.Qxe3#
- 1...Rxb2
- 2.Qc5#
- 1...Qg2
- 2.Qc5#
- 2.Qxe3#
- 1...Re4
- 2.Qc5#
- 2.Qxe4#
- 1...Rg5
- 2.Qe4#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Rd6!
- threat
- 1.Ba2?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxb2
- 2.Qc5#
- 1...Qh1
- 2.Qc5#
- 2.Qxe3#
- 1...Qg2
- 2.Qc5#
- 2.Qxe3#
- 1...Rg5
- 2.Qe4#
- 1...Rb3
- 2.Sc6#
- 2.Qc5#
- 1...Rb5
- 2.Sc6#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Rd6!
- threat
- 1.Bb3?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxb3
- 2.Sc6#
- 2.Qc5#
- 1...Qh1
- 2.Qc5#
- 2.Qxe3#
- 1...Qg2
- 2.Qc5#
- 2.Qxe3#
- 1...Rg5
- 2.Qe4#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Rd6!
- threat
- 1.Bf3?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxb2
- 2.Qc5#
- 1...Re4
- 2.Qc5#
- 2.Qxe4#
- 1...Rg5
- 2.Qe4#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Bd6
- 2.Rd5#
- 1...Rd6!
- threat
- 1.Bc4?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rd6
- 2.Sb3#
- 1...Qh1
- 2.Qc5#
- 2.Qxe3#
- 1...Qg2
- 2.Qc5#
- 2.Qxe3#
- 1...Rg5
- 2.Qe4#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Sb3#
- 2.Qc5#
- 1...Rc6
- 2.Sb3#
- 2.Sxc6#
- 2.Rd5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Rxb2!
- threat
- 1.Be4?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxe4
- 2.Qc5#
- 2.Qxe4#
- 1...Rxb2
- 2.Qc5#
- 1...Rd6
- 2.Sb3#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Sb3#
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sb3#
- 2.Sxc6#
- 2.Rd5#
- 1...Bd6
- 2.Rd5#
- 1...Rg5!
- threat
- 1.Bc6?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxb2
- 2.Qc5#
- 1...Rxc6
- 2.Sxc6#
- 1...Qh1
- 2.Qc5#
- 2.Qxe3#
- 1...Qg2
- 2.Qc5#
- 2.Qxe3#
- 1...Rg5
- 2.Qe4#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 2.Qxd6#
- 1...Rb5!
- threat
- 1.Be6?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxb2
- 2.Qc5#
- 1...Rxe6
- 2.Qb4#
- 2.Qc5#
- 1...Rb5
- 2.Sc6#
- 1...Rd6
- 2.Qxf6#
- 1...Qh1
- 2.Qc5#
- 1...Qg2
- 2.Qc5#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Rg5!
- threat
- 1.Bf7?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxb2
- 2.Qc5#
- 1...Qh1
- 2.Qc5#
- 2.Qxe3#
- 1...Qg2
- 2.Qc5#
- 2.Qxe3#
- 1...Rg5
- 2.Qe4#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Re6
- 2.Qb4#
- 2.Qc5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Rd6!
- threat
- 1.Bg8?
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Rxg8
- 2.Qc5#
- 2.Qe4#
- 1...Rxb2
- 2.Qc5#
- 1...Qh1
- 2.Qc5#
- 2.Qxe3#
- 1...Qg2
- 2.Qc5#
- 2.Qxe3#
- 1...Rg5
- 2.Qe4#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Re6
- 2.Qb4#
- 2.Qc5#
- 1...Bg2
- 2.Qc5#
- 1...Bd6
- 2.Rd5#
- 1...Rd6!
- threat
- 1.Rxg4+?
- 1...Bf4
- 2.Rxf4#
- 2.Qe4#
- 1...Qxg4!
- 1...Bf4
- 1.Qb4+?
- 1...Rxb4
- 2.Sc6#
- 1...Ke5!
- 1...Rxb4
- 1.Qxf6+?
- 1...Be5
- 2.Qxb6#
- 1...Rxf6!
- 1...Be5
- 1.Bh1?
- Keys
- 1.Bg2!
- threat
- 2.Rd5#
- 2.Qc5#
- 1...Qxg2
- 2.Qc5#
- 2.Qxe3#
- 1...Rxb2
- 2.Qc5#
- 1...Bxg2
- 2.Qc5#
- 1...Rd6
- 2.Rxg4#
- 1...Re4
- 2.Qc5#
- 2.Qxe4#
- 1...Rg5
- 2.Qe4#
- 1...Rb5
- 2.Sc6#
- 1...Ra6
- 2.Qb4#
- 2.Qc5#
- 1...Rc6
- 2.Sxc6#
- 2.Rd5#
- 1...Bd6
- 2.Rd5#
- threat
- 1.Bg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 14
- Sets
- Q(b);N_GUARD::QAB1(H),XP(d)
- R(f);N_GUARD,XR(E)::QAR1(H)
- R(f);N_GUARD::QAR1(H),XR(f)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- R(g);N_GUARD::S(I),XR(g)
- B(i);S_CUTR(f)::QAR1(H)
- B(i);SBLOCK::QAB1(H)
- Tries
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(a);P_PINS(B)::QAB1(H)
- B(i);::R1(F)
- Refutation
- R(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(a);P_PINS(B)::QAB1(H)
- B(i);::R1(F)
- Refutation
- R(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(a);P_PINS(B)::QAB1(H)
- B(i);::R1(F)
- Refutation
- R(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(i);::R1(F)
- Refutation
- R(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);N_GUARD::S(B)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(a);P_PINS(B)::QAB1(H)
- B(i);::R1(F)
- Refutation
- R(g);XP(C)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(g);N_GUARD::S(B)
- R(g);N_GUARD::S(I)
- B(i);::R1(F)
- Refutation
- R(f);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(g);XB(G)::S(I),XR(g)
- R(f);N_GUARD::QAR1(H)
- B(a);P_PINS(B)::QAB1(H)
- Refutation
- R(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(g);N_GUARD::S(I)
- R(g);S_CUTB(i)::QAB(H),XP(h)
- Q(b);::QAB1(H)
- B(a);P_PINS(B)::QAB1(H)
- B(i);::R1(F)
- Refutation
- R(f);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(a);P_PINS(B)::QAB1(H)
- B(i);::R1(F)
- Refutation
- R(g);
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(a);P_PINS(B)::QAB1(H)
- B(i);::R1(F)
- Refutation
- R(g);
- Try
- R(E);CHECK,XR(f)
- Refutation
- Q(b);XR(E)
- Try
- Q(H);CHECK
- Vars
- R(g);XQ(H)::S(I)
- Refutation
- K(e);S_FLIGHT
- Try
- Q(H);CHECK,XP(h)
- Vars
- B(i);N_GUARD,P_SPINB(i),SBLOCK::QAB(H),XR(g)
- Refutation
- R(g);XQ(H)
- Try
- Actual
- B(G);
- Threat
- DUALS(2)
- Vars
- R(g);XP(C)::QAB1(H)
- B(a);P_PINS(B),XB(G)::QAB1(H)
- R(g);S_CUTB(i)::R(E),XR(f)
- R(f);N_GUARD::QAR1(H)
- R(g);N_GUARD::S(I)
- B(i);::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).