MESON Chess Problem Database
Problem Display
PID: 140194 (2r3B1/3R1N2/1Q5r/R1nP1p2/3NkPpb/1p2P3/2P1K3/8 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Probleemblad, 1975
#2
11 + 8
SOLUTION
- SOUND
- Sets
- 1...Rh5
- 2.Sd6#
- 1...Rd6
- 2.Sxd6#
- 1...Rh7
- 2.Sd6#
- 1...Rh8
- 2.Sd6#
- 1...Be1
- 2.Sg5#
- 1...Bf2
- 2.Sg5#
- 1...Bg3
- 2.Sg5#
- 1...Bg5
- 2.Sxg5#
- 1...Bf6
- 2.Sd6#
- 1...Sd3
- 2.cxd3#
- 1...Se6
- 2.Sd6#
- 1...Rh5
- Tries
- 1.Sxb3?
- threat
- 2.Sd2#
- 2.Qb4#
- 1...Rxb6
- 2.Sd2#
- 1...Sxd7
- 2.Sd2#
- 2.Qd4#
- 1...Rd6
- 2.Sxd6#
- 1...Rb8
- 2.Sd2#
- 2.Sxc5#
- 1...Be1
- 2.Sg5#
- 1...Bf6
- 2.Sd2#
- 2.Sd6#
- 1...Sd3
- 2.Sd2#
- 2.Qd4#
- 2.cxd3#
- 1...Sa4
- 2.Sd2#
- 2.Qd4#
- 1...Sa6
- 2.Sd2#
- 2.Qd4#
- 1...Se6
- 2.Sd2#
- 2.Sd6#
- 1...Sb7
- 2.Sd2#
- 2.Qd4#
- 1...Sxb3!
- threat
- 1.Sf3?
- threat
- 2.Sd2#
- 2.Qb4#
- 1...Rxb6
- 2.Sd2#
- 1...Sxd7
- 2.Sd2#
- 2.Qd4#
- 1...Rd6
- 2.Sxd6#
- 1...Rb8
- 2.Sd2#
- 1...Be1
- 2.S3g5#
- 2.S7g5#
- 1...Bf6
- 2.Sd2#
- 2.Sd6#
- 1...Sd3
- 2.Sd2#
- 2.Qd4#
- 2.cxd3#
- 1...Sa4
- 2.Sd2#
- 2.Qd4#
- 1...Sa6
- 2.Sd2#
- 2.Qd4#
- 1...Se6
- 2.Sd2#
- 2.Sd6#
- 1...Sb7
- 2.Sd2#
- 2.Qd4#
- 1...gxf3+!
- threat
- 1.Sc6?
- threat
- 2.Qb4#
- 1...Rd6
- 2.Sxd6#
- 1...Be1
- 2.Sg5#
- 1...Bf6
- 2.Sd6#
- 1...Sd3
- 2.Qd4#
- 2.cxd3#
- 1...Sa6
- 2.Qd4#
- 1...Se6
- 2.Sd6#
- 1...Rb8!
- threat
- 1.Se6?
- threat
- 2.Qb4#
- 1...Sxe6
- 2.Sd6#
- 1...Sxd7
- 2.Sd6#
- 2.Qd4#
- 1...Rb8
- 2.Sxc5#
- 1...Be1
- 2.Seg5#
- 2.Sfg5#
- 1...Sd3
- 2.Sd6#
- 2.Qd4#
- 2.cxd3#
- 1...Sa4
- 2.Sd6#
- 2.Qd4#
- 1...Sa6
- 2.Sd6#
- 2.Qd4#
- 1...Sb7
- 2.Qd4#
- 1...Bf6!
- threat
- 1.Qb4?
- threat
- 2.Sxb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Sxd7
- 2.Sc6#
- 1...bxc2
- 2.Sxc2#
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Rd6
- 2.Sxd6#
- 1...Rb6
- 2.Sb5#
- 1...Rhc6
- 2.Sxb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sxc6#
- 2.Se6#
- 1...Re6
- 2.Sxb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Sxe6#
- 1...Rcc6
- 2.Sxb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sxc6#
- 2.Se6#
- 1...Rb8
- 2.Sb5#
- 1...Be1
- 2.Sg5#
- 1...Bf6
- 2.Sd6#
- 1...Sd3
- 2.cxd3#
- 1...Sa4
- 2.Sc6#
- 1...Se6
- 2.Sd6#
- 1...Sb7
- 2.Sc6#
- 1...b2
- 2.Sb3#
- 2.Sf3#
- 2.Sb5#
- 2.Sc6#
- 2.Se6#
- 1...Sa6!
- threat
- 1.Qe6+?
- 1...Sxe6
- 2.Sd6#
- 1...Rxe6!
- 1...Sxe6
- 1.Qf6?
- threat
- 2.Sd6#
- 2.Qe5#
- 2.Qxf5#
- 1...Rxg8
- 2.Qe5#
- 2.Qxf5#
- 1...Bxf6
- 2.Sd6#
- 1...Sxd7
- 2.Sd6#
- 2.Qxf5#
- 1...Rh5
- 2.Sd6#
- 2.Qe5#
- 1...Rc6
- 2.Qe5#
- 2.Qxf5#
- 1...Re8
- 2.Sd6#
- 2.Qxf5#
- 1...Sd3
- 2.Sd6#
- 2.Qxf5#
- 2.cxd3#
- 1...Sb7
- 2.Re7#
- 2.Qe5#
- 2.Qxf5#
- 1...Rxf6!
- threat
- 1.Qg6?
- threat
- 2.Sd6#
- 2.Qxf5#
- 1...Rxg8
- 2.Qxf5#
- 1...Rh5
- 2.Sd6#
- 1...Rc6
- 2.Qxf5#
- 1...Be7
- 2.Qxf5#
- 1...Sb7
- 2.Qxf5#
- 1...Rxg6!
- threat
- 1.Sxb3?
- Keys
- 1.Sb5!
- threat
- 2.Sc3#
- 1...Sxd7
- 2.Qd4#
- 1...Be1
- 2.Sg5#
- 1...Bf6
- 2.Sfd6#
- 1...Sd3
- 2.Qd4#
- 2.cxd3#
- 1...Sa4
- 2.Qd4#
- 1...Sa6
- 2.Qd4#
- 1...Se6
- 2.Sbd6#
- 1...Sb7
- 2.Qd4#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(g);N_GUARD::S(J)
- R(g);N_GUARD::S(J),XR(g)
- B(d);N_GUARD::S(J)
- B(d);N_GUARD::S(J),XB(d)
- B(d);S_CUTR(g)::S(J)
- S(e);OGATE::P(A),XS(e)
- S(e);S_CUTR(g)::S(J)
- Tries
- Try
- S(D);XP(a)
- Threat
- DUALS(2)
- Vars
- R(g);XQ(H)::S(D)
- R(g);N_GUARD::S(J),XR(g)
- B(d);N_GUARD::S(J)
- Refutation
- S(e);XS(D)
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- R(g);XQ(H)::S(D)
- R(g);N_GUARD::S(J),XR(g)
- R(h);::S(D)
- Refutation
- P(c);CHECK,XS(D)
- Try
- S(D);
- Threat
- QAR(H)
- Vars
- R(g);N_GUARD::S(J),XR(g)
- B(d);N_GUARD::S(J)
- B(d);S_CUTR(g)::S(J)
- S(e);OGATE::QAR1(H)
- S(e);S_CUTR(g)::S(J)
- Refutation
- R(h);
- Try
- S(D);
- Threat
- QAR(H)
- Vars
- S(e);XS(D)::S(J)
- R(h);N_GUARD::S(D),XS(e)
- S(e);OGATE::QAR1(H)
- Refutation
- B(d);
- Try
- Q(H);
- Threat
- DUALS(5)
- Vars
- S(e);XR(I)::QAR(H)+S(D)
- R(g);N_GUARD::S(J),XR(g)
- R(g);::QAR(H)+S(D)
- R(h);::QAR(H)+S(D)
- B(d);N_GUARD::S(J)
- B(d);S_CUTR(g)::S(J)
- S(e);OGATE::P(A),XS(e)
- S(e);::QAR(H)+S(D)
- S(e);S_CUTR(g)::S(J)
- Refutation
- S(e);
- Try
- Q(H);CHECK
- Vars
- S(e);XQ(H)::S(J)
- Refutation
- R(g);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- B(d);XQ(H)::S(J)
- Refutation
- R(g);XQ(H)
- Try
- Q(H);P_PINP(f)
- Threat
- DUALS(2)
- Vars
- R(h);XB(K)::QAB1(H),XP(f)
- R(g);::S(J)
- R(h);::QAB1(H),XP(f)
- B(d);::QAB1(H),XP(f)
- S(e);::QAB1(H),XP(f)
- Refutation
- R(g);N_SPINP(f),XQ(H)
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- S(e);OGATE,XR(I)::QAR1(H)
- B(d);N_GUARD::S(J)
- B(d);S_CUTR(g)::S(J)
- S(e);OGATE::QAR1(H)
- S(e);S_CUTR(g)::S(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).