MESON Chess Problem Database
Problem Display
PID: 235317 (1q1N4/3b4/2PNRP2/2p2K1p/2Bk2nQ/8/n1R2P2/8 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Deutsche Schachzeitung, 1975
#2
10 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qa7
- 2.Sb5#
- 1...Qc7
- 2.Sb5#
- 1...Qb5
- 2.Sxb5#
- 1...Qa8
- 2.Sb5#
- 1...Qc8
- 2.Sb5#
- 1...Qxd8
- 2.Sb5#
- 1...Bxc6
- 2.Sxc6#
- 1...Bxe6+
- 2.Sxe6#
- 1...Be8
- 2.Re4#
- 1...Sc3
- 2.Rd2#
- 1...Qa7
- Tries
- 1.Qg3?
- threat
- 2.Rd2#
- 2.Qf4#
- 2.Qd3#
- 1...Bxe6+
- 2.Sxe6#
- 1...Se3+
- 2.Qxe3#
- 2.fxe3#
- 1...Qxd6
- 2.Qxd6#
- 2.Qd3#
- 1...Bxc6
- 2.Sxc6#
- 2.Rd2#
- 2.Qd3#
- 1...Sxf2
- 2.Qxf2#
- 2.Qe5#
- 2.Qe3#
- 1...Sxf6
- 2.Rd2#
- 2.Qe5#
- 2.Qd3#
- 2.Qe3#
- 1...Qb1
- 2.Qf4#
- 2.Qd3#
- 1...Qb2
- 2.Qf4#
- 2.Qd3#
- 1...Qb3
- 2.Qf4#
- 1...Qb4
- 2.Qf4#
- 2.Qd3#
- 1...Sc1
- 2.Qf4#
- 2.Qc3#
- 1...Sc3
- 2.Rd2#
- 2.Qxc3#
- 2.Qd3#
- 1...Sb4
- 2.Qf4#
- 2.Qc3#
- 1...Se5
- 2.Qf4#
- 2.Qxe5#
- 2.Qe3#
- 1...Sh6+!
- threat
- 1.Qg5?
- threat
- 2.Qd2#
- 2.Qf4#
- 1...Bxe6+
- 2.Sxe6#
- 1...Se3+
- 2.Qxe3#
- 2.fxe3#
- 1...Qxd6
- 2.Qd2#
- 1...Bxc6
- 2.Sxc6#
- 2.Qd2#
- 1...Sxf2
- 2.Qe3#
- 1...Sxf6
- 2.Qd2#
- 2.Qe3#
- 2.Qxf6#
- 1...Qb3
- 2.Qf4#
- 1...Qb4
- 2.Qf4#
- 1...Sc1
- 2.Qf4#
- 1...Sc3
- 2.Rd2#
- 2.Qd2#
- 1...Sb4
- 2.Qf4#
- 1...Se5
- 2.Qe3#
- 2.Qf4#
- 1...Sh6+!
- threat
- 1.Qh1?
- threat
- 2.Qe4#
- 2.Qd5#
- 2.Qd1#
- 1...Bxe6+
- 2.Sxe6#
- 1...Se3+
- 2.fxe3#
- 1...Qxd6
- 2.Qe4#
- 2.Qd1#
- 1...Bxc6
- 2.Sxc6#
- 2.Qd1#
- 1...Sxf2
- 2.Qd5#
- 1...Sxf6
- 2.Qd1#
- 1...Qb1
- 2.Qe4#
- 2.Qd5#
- 1...Qb3
- 2.Qe4#
- 2.Qd5#
- 1...Qb4
- 2.Qe4#
- 2.Qd5#
- 1...Sc1
- 2.Qe4#
- 2.Qd5#
- 1...Sc3
- 2.Rd2#
- 1...Sb4
- 2.Qe4#
- 2.Qa1#
- 1...Se5
- 2.Qe4#
- 2.Qd5#
- 1...Sh6+!
- threat
- 1.cxd7?
- threat
- 2.Sc6#
- 2.Re4#
- 1...Qxd6
- 2.Re4#
- 2.Rxd6#
- 1...Qxd8
- 2.Sb5#
- 2.Re4#
- 1...Qc7
- 2.Sb5#
- 2.Re4#
- 1...Qb5
- 2.Sxb5#
- 2.Re4#
- 1...Qb6
- 2.Re4#
- 1...Qa8
- 2.Sb5#
- 1...Qc8
- 2.Sb5#
- 2.Re4#
- 1...Sc3
- 2.Sc6#
- 2.Rd2#
- 1...Sb4
- 2.Re4#
- 1...Qb7!
- threat
- 1.Qg3?
- Keys
- 1.Kf4!
- threat
- 2.Re4#
- 1...Qxd6+
- 2.Rxd6#
- 1...Bxc6
- 2.Sxc6#
- 1...Bxe6
- 2.Sxe6#
- 1...Sxf2
- 2.Qxf2#
- 1...Sxf6
- 2.Qxf6#
- 1...Sc3
- 2.Rd2#
- 1...Se5
- 2.Sf5#
- threat
- 1.Kf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 7
- Sets
- Q(g);N_GUARD::S(G)
- Q(g);N_GUARD::S(G),XQ(g)
- Q(g);N_GUARD,XS(J)::S(G)
- B(f);N_PINR(H),XP(F)::S(J),XB(f)
- B(f);CHECK,XR(H)::S(J),XB(f)
- B(f);N_PINR(H)::R1(H)
- S(a);SBLOCK::R(A)
- Tries
- Try
- Q(D);N_PINS(c)
- Threat
- DUALS(3)
- Vars
- B(f);CHECK,XR(H)::S(J),XB(f)
- Q(g);::QAR2(D)
- Refutation
- S(c);CHECK
- Try
- Q(D);N_PINS(c)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,XR(H)::S(J),XB(f)
- Q(g);XS(G)::QAR2(D)
- S(c);N_GUARD,XP(B)::QAB1(D)
- Q(g);::QAR2(D)
- S(a);::QAR2(D)
- Refutation
- S(c);CHECK
- Try
- Q(D);N_PINS(c)
- Threat
- DUALS(3)
- Vars
- B(f);CHECK,XR(H)::S(J),XB(f)
- S(c);CHECK,OGATE::P(B),XS(c)
- S(c);XP(B)::QAR1(D)
- S(c);XP(I)::QAR(D)
- S(a);SBLOCK::R(A)
- Refutation
- S(c);CHECK
- Try
- P(F);N_SPINR(H),XB(f)
- Threat
- DUALS(2)
- Vars
- Q(g);::R1(H)
- Q(g);N_GUARD::S(G)
- S(a);::R1(H)
- Refutation
- Q(g);
- Try
- Actual
- K(E);N_PINS(c),N_SPINR(H),P-FLIGHT,P_SPINS(G)
- Threat
- R1(H)
- Vars
- Q(g);CHECK,OGATE,XS(G)::R(H),XQ(g)
- B(f);XP(F)::S(J),XB(f)
- B(f);XR(H)::S(J),XB(f)
- S(c);OGATE,XP(B)::QAB(D),XS(c)
- S(c);OGATE,XP(I)::QAB(D),XS(c)
- S(a);SBLOCK::R(A)
- S(c);N_PINS(G)::S(G)
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).