MESON Chess Problem Database
Problem Display
PID: 233953 (5nKB/6R1/4P3/1P6/1pNq3p/n1kB1R2/1p2P3/3Q4 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Skakbladet, 1969
#2
10 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qg1
- 2.Rxg1#
- 1...Qa7
- 2.Rxa7#
- 1...Qxg7+
- 2.Bxg7#
- 1...Qxd3
- 2.Rg4#
- 2.Rc7#
- 2.Qxd3#
- 1...Qxc4
- 2.Rc7#
- 1...Qg4
- 2.Rxg4#
- 1...Qd7
- 2.Rxd7#
- 1...Sb1
- 2.Qc2#
- 1...Sc2
- 2.Qxc2#
- 1...Sxc4
- 2.Qc2#
- 1...Sxb5
- 2.Qc2#
- 1...b3
- 2.Qe1#
- 2.Qd2#
- 1...Qg1
- Tries
- 1.Bb1+?
- 1...Qe3
- 2.Rg4#
- 2.Rc7#
- 1...Qd3
- 2.Rg4#
- 2.Rc7#
- 2.Qxd3#
- 1...Kxc4!
- 1...Qe3
- 1.Bc2+?
- 1...Qe3
- 2.Rg4#
- 2.Rc7#
- 1...Qd3
- 2.Rg4#
- 2.Rc7#
- 2.Qxd3#
- 1...Kxc4!
- 1...Qe3
- 1.Be4+?
- 1...Qe3
- 2.Rc7#
- 1...Qd3
- 2.Rc7#
- 2.Qxd3#
- 1...Kxc4!
- 1...Qe3
- 1.Bf5+?
- 1...Qe3
- 2.Rg4#
- 2.Rc7#
- 1...Qd3
- 2.Rg4#
- 2.Rc7#
- 2.Qxd3#
- 1...Kxc4!
- 1...Qe3
- 1.Bg6+?
- 1...Qe3
- 2.Rc7#
- 1...Qd3
- 2.Rc7#
- 2.Qxd3#
- 1...Kxc4!
- 1...Qe3
- 1.Bh7+?
- 1...Qe3
- 2.Rg4#
- 2.Rc7#
- 1...Qd3
- 2.Rg4#
- 2.Rc7#
- 2.Qxd3#
- 1...Kxc4!
- 1...Qe3
- 1.Rc7?
- threat
- 2.Sxa3#
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Qg7+
- 2.Bxg7#
- 1...Sxc4
- 2.Bb1#
- 2.Bc2#
- 2.Bxc4#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 2.Rxc4#
- 2.Qc2#
- 1...Sxb5
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 2.Qc2#
- 1...Sxe6
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Qe5
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 2.Bxe5#
- 1...Qf6
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 2.Bxf6#
- 1...Sc2
- 2.Sd2#
- 2.Sa5#
- 2.Bxc2#
- 2.Qxc2#
- 1...b3
- 2.Qe1#
- 2.Qd2#
- 1...b1Q
- 2.Bxb1#
- 2.Bc2#
- 1...b1S
- 2.Bxb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...b1B
- 2.Bxb1#
- 2.Bc2#
- 1...b1R
- 2.Bxb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Sb1
- 2.Sd2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 2.Bxb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 2.Qc2#
- 1...Sg6
- 2.Sxa3#
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bxg6#
- 1...Sd7
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bh7#
- 1...Sh7
- 2.Sxa3#
- 2.Bb1#
- 2.Bc2#
- 2.Be4#
- 2.Bf5#
- 2.Bg6#
- 2.Bxh7#
- 1...Qxh8+!
- threat
- 1.Bb1+?
- Keys
- 1.Sb6!
- threat
- 2.Sa4#
- 1...Qxg7+
- 2.Bxg7#
- 1...Qxb6
- 2.Rc7#
- 1...Qxd3
- 2.Rxd3#
- 2.Rg1#
- 2.Rg2#
- 2.Rgg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Ra7#
- 2.Rb7#
- 2.Rc7#
- 2.Rd7#
- 2.Re7#
- 2.Rgf7#
- 2.Rh7#
- 2.Qxd3#
- 1...Qg1
- 2.Rxg1#
- 1...Qf2
- 2.Rc7#
- 1...Qe3
- 2.Rc7#
- 1...Qc5
- 2.Rc7#
- 1...Qe5
- 2.Be4#
- 1...Qf6
- 2.Bf5#
- 1...Qc4
- 2.Bxc4#
- 2.Rc7#
- 1...Qe4
- 2.Bxe4#
- 2.Rc7#
- 1...Qf4
- 2.Rc7#
- 1...Qg4
- 2.Rxg4#
- 1...Qd5
- 2.Rc7#
- 1...Qd6
- 2.Rc7#
- 1...Qd7
- 2.Rxd7#
- 1...Qd8
- 2.Rc7#
- 1...Sc2
- 2.Qxc2#
- 1...b3
- 2.Qe1#
- threat
- 1.Sb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 11
- REMOVED MATES = 5
- Sets
- Q(e);OGATEB,P_PINR(H)::B(J)+R(H),XQ(e)
- Q(e);OGATEB::B(J)+R(H),XQ(e)
- Q(e);CHECK,OGATE,P_SPINQ(e),XR(H)::B(J),XQ(e)
- Q(e);OGATEB,P_PINP(G),XS(E)::B(J)+R(H)
- S(b);N_GUARD::QAR1(A)
- S(b);N_GUARD::QAR1(A),XS(b)
- S(b);N_GUARD,XS(E)::QAR1(A)
- S(b);N_GUARD,XP(F)::QAR1(A)
- Tries
- Try
- B(C);CHECK
- Refutation
- K(c);P-FLIGHT,XS(E)
- Try
- B(C);CHECK
- Refutation
- K(c);P-FLIGHT,XS(E)
- Try
- B(C);CHECK
- Vars
- Q(e);P_SPINQ(e)::B(J)+R(H)
- Refutation
- K(c);P-FLIGHT,XS(E)
- Try
- B(C);CHECK
- Refutation
- K(c);P-FLIGHT,XS(E)
- Try
- B(C);CHECK
- Vars
- Q(e);P_SPINQ(e)::B(J)+R(H)
- Refutation
- K(c);P-FLIGHT,XS(E)
- Try
- B(C);CHECK
- Refutation
- K(c);P-FLIGHT,XS(E)
- Try
- R(H);P_PINQ(e)
- Threat
- DUALS(7)
- Vars
- Q(e);CHECK,OGATEB::B(J),XQ(e)
- Refutation
- Q(e);CHECK,N_SPINQ(e),XB(J)
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XR(H)::B(J),XQ(e)
- Q(e);XS(E)::B(J)+R(H),DCHECK
- Q(e);OGATEB,P_PINR(H)::B(J)+R(H),XQ(e)
- Q(e);::B(J)+R(H),DCHECK
- Q(e);S_CUTS(b)::B(J)+R(H)
- Q(e);N_GUARD::R(D)+B(C)
- Q(e);P_PINP(G)::B(J)+R(H),DCHECK
- Q(e);OGATEB::B(J)+R(H),XQ(e)
- S(b);N_GUARD::QAR1(A),XS(b)
- P(d);SBLOCK::QAB(A)
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).