MESON Chess Problem Database
Problem Display
PID: 233915 (8/3PK1p1/1QP5/3kBb1R/4n1N1/r2qpP2/1N6/2bR4 w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Skakbladet, 1939
#2
10 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Rxd4#
- 1...Ra1
- 2.Rxd3#
- 1...Ra2
- 2.Rxd3#
- 1...Ra5
- 2.Rxd3#
- 1...Ra6
- 2.Rxd3#
- 1...Ra7
- 2.Rxd3#
- 1...Ra8
- 2.Rxd3#
- 1...Sf2
- 2.Qb5#
- 1...Sg3
- 2.Qb5#
- 1...Sg5
- 2.Qb5#
- 1...Sf6
- 2.Qb5#
- 1...Qd4
- Tries
- 1.Sxe3+?
- 1...Kxe5
- 2.Rxf5#
- 1...Bxe3!
- 1...Kxe5
- 1.Bxg7?
- threat
- 2.Rxf5#
- 1...Bxb2
- 2.Sxe3#
- 1...Sg5
- 2.Qb5#
- 1...Sd2
- 2.d8Q#
- 2.d8R#
- 1...Sg3
- 2.Qb5#
- 2.d8Q#
- 2.d8R#
- 1...Sd6!
- threat
- 1.Rxf5?
- threat
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 1...Bxb2
- 2.Sxe3#
- 1...Sg5
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 2.Qb5#
- 2.d8Q#
- 2.d8R#
- 1...Qd4
- 2.Bh2#
- 2.Bg3#
- 2.Bxd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 2.Rxd4#
- 1...Rc3
- 2.Bh2#
- 2.Bxc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 1...Sd2
- 2.d8Q#
- 2.d8R#
- 1...Sf2
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 2.Qb5#
- 2.d8Q#
- 2.d8R#
- 1...Sc3
- 2.Bh2#
- 2.Bxc3#
- 2.Bg3#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bxg7#
- 2.Bb8#
- 2.Rxd3#
- 2.d8Q#
- 2.d8R#
- 1...Sg3
- 2.Bxg3#
- 2.Qb5#
- 2.d8Q#
- 2.d8R#
- 1...Sc5
- 2.Bc3#
- 2.Bf6#
- 2.Bxg7#
- 1...Sd6
- 2.Bxd6#
- 1...Sf6
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bf4#
- 2.Bd6#
- 2.Bxf6#
- 2.Bc7#
- 2.Bb8#
- 2.Qb5#
- 1...g5
- 2.Bh2#
- 2.Bc3#
- 2.Bg3#
- 2.Bd4#
- 2.Bf4#
- 2.Bd6#
- 2.Bf6#
- 2.Bc7#
- 2.Bg7#
- 2.Bb8#
- 2.Bh8#
- 1...g6!
- threat
- 1.fxe4+?
- 1...Bxe4
- 2.Qb5#
- 2.d8Q#
- 2.d8R#
- 1...Kxe4!
- 1...Bxe4
- 1.d8Q+?
- 1...Sd6
- 2.Qb5#
- 2.Qxd6#
- 1...Bd7!
- 1...Sd6
- 1.d8R+?
- 1...Sd6
- 2.Rxd6#
- 2.Qb5#
- 1...Bd7!
- 1...Sd6
- 1.Sxe3+?
- Keys
- 1.Bc3!
- threat
- 2.Rxd3#
- 2.Rxf5#
- 1...Qxd1
- 2.Rxf5#
- 1...Rxc3
- 2.Rxf5#
- 1...Bxb2
- 2.Sxe3#
- 1...Qd2
- 2.Sxe3#
- 2.Rxf5#
- 1...Qd4
- 2.Rxd4#
- 2.Rxf5#
- 1...Ra4
- 2.Rxf5#
- 1...Bd2
- 2.Rxf5#
- 1...Sd2
- 2.d8Q#
- 2.d8R#
- 1...Sf2
- 2.Rxf5#
- 2.Qb5#
- 2.d8Q#
- 2.d8R#
- 1...Sg3
- 2.Rxd3#
- 2.Qb5#
- 2.d8Q#
- 2.d8R#
- 1...Sc5
- 2.Rxf5#
- 1...Sg5
- 2.Qb5#
- 1...Sd6
- 2.Rxd3#
- 1...g5
- 2.Rxd3#
- 1...g6
- 2.Rxd3#
- threat
- 1.Bc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 10
- Sets
- Q(c);OGATE::R1(A),XQ(c)
- R(b);N_GUARD::R(A),XQ(c)
- R(b);N_GUARD,P_PINP(I)::R(A),XQ(c)
- S(e);N_GUARD::QAR2(G)
- Tries
- Try
- S(D);CHECK,XP(d)
- Vars
- K(f);N_SPINQ(c),P-FLIGHT,P_SPINB(g),XB(E)::R1(F),XB(g)
- Refutation
- B(a);XS(D)
- Try
- B(E);P_PINB(g),XP(h)
- Threat
- R(F),XB(g)
- Vars
- B(a);N_GUARD,XS(B)::S(D),XP(d)
- S(e);N_GUARD,N_SPINB(g)::QAR2(G)
- S(e);N_GUARD,N_SPINQ(c)::P=Q
- Refutation
- S(e);
- Try
- R(F);XB(g)
- Threat
- DUALS(10)
- Vars
- B(a);N_GUARD,XS(B)::S(D),XP(d)
- S(e);N_GUARD,N_SPINQ(c)::P=Q
- S(e);::R(F)+B(E),XS(e)
- Refutation
- P(h);
- Try
- P(C);CHECK,XS(e)
- Refutation
- K(f);N_SPINQ(c),S_FLIGHT,XP(C)
- Try
- P(I);CHECK
- Refutation
- B(g);P_SPINB(g)
- Try
- P(I);CHECK
- Refutation
- B(g);P_SPINB(g)
- Try
- Actual
- B(E);P_PINB(g)
- Threat
- DUALS(2)
- Vars
- Q(c);N_SPINQ(c),XR(A)::R(F),XB(g)
- R(b);XB(E)::R(F),XB(g)
- B(a);N_GUARD,XS(B)::S(D),XP(d)
- R(b);::R(F),XB(g)
- B(a);N_SPINQ(c)::R(F),XB(g)
- S(e);N_GUARD,N_SPINQ(c)::P=Q
- S(e);::R(F),XB(g)
- S(e);N_GUARD,N_SPINB(g)::QAR2(G)
- S(e);::R(A),XQ(c)
- P(h);N_SPINB(g)::R(A),XQ(c)
- P(h);::R(A),XQ(c)
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).