MESON Chess Problem Database
Problem Display
PID: 233928 (3B2r1/b1Q3P1/2n1N1R1/5k1P/4r2p/3P1p2/7n/3B1N1K w - - 0 1)
Larsen, Lars Aksglade (= Aksglade, Lars)
Skakbladet, 1944
#2
10 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qf4#
- 1...Re2
- 2.Qf4#
- 1...Re3
- 2.Qf4#
- 1...Rd4
- 2.Se3#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Rf6#
- 1...Re5
- 2.Qf7#
- 1...Rxe6
- 2.Rg5#
- 1...Rxg7
- 2.Sxg7#
- 1...Rf8
- 2.gxf8Q#
- 2.gxf8R#
- 1...f2
- 2.Rf6#
- 1...h3
- 2.Sg3#
- 1...Re1
- Tries
- 1.Se3+?
- 1...Rxe3
- 2.Qf4#
- 1...Bxe3!
- 1...Rxe3
- 1.Bxf3?
- threat
- 2.Bxe4#
- 2.Rf6#
- 2.dxe4#
- 1...Rxe6
- 2.Rg5#
- 1...Rxd8
- 2.Bxe4#
- 2.dxe4#
- 1...Sxd8
- 2.Bxe4#
- 2.dxe4#
- 1...Re1
- 2.Rf6#
- 2.Qf4#
- 1...Re2
- 2.Rf6#
- 2.Qf4#
- 1...Re3
- 2.Rf6#
- 2.Qf4#
- 1...Ra4
- 2.Rf6#
- 1...Rb4
- 2.Rf6#
- 1...Rc4
- 2.Rf6#
- 1...Rd4
- 2.Se3#
- 2.Rf6#
- 1...Rf4
- 2.Rf6#
- 2.Qxf4#
- 1...Rg4
- 2.Rf6#
- 1...Re5
- 2.Rf6#
- 2.Qf7#
- 1...Rf8
- 2.Bxe4#
- 2.dxe4#
- 2.gxf8Q#
- 2.gxf8R#
- 1...Bd4
- 2.Bxe4#
- 2.dxe4#
- 1...Sg4
- 2.Bxe4#
- 2.dxe4#
- 1...Se7
- 2.Bxe4#
- 2.dxe4#
- 1...Sxf3!
- threat
- 1.Qxc6?
- threat
- 2.Rg5#
- 2.Qxe4#
- 1...Ke5
- 2.Rg5#
- 1...Rxg7
- 2.Qxe4#
- 1...Rxd8
- 2.Qxe4#
- 1...Re1
- 2.Rg5#
- 1...Re2
- 2.Rg5#
- 1...Re3
- 2.Rg5#
- 1...Ra4
- 2.Rg5#
- 2.Qd5#
- 1...Rb4
- 2.Rg5#
- 2.Qd5#
- 1...Rc4
- 2.Rg5#
- 2.Qd5#
- 1...Rd4
- 2.Rg5#
- 1...Rf4
- 2.Rg5#
- 2.Qd5#
- 1...Rg4
- 2.Qd5#
- 1...Re5
- 2.Rg5#
- 1...Be3
- 2.Qxe4#
- 1...Rxe6!
- threat
- 1.Qe7?
- threat
- 2.Rg5#
- 2.Qg5#
- 2.Qf6#
- 1...Ke5
- 2.Rg5#
- 1...Rxe6
- 2.Qg5#
- 1...Rxg7
- 2.Qg5#
- 2.Qf6#
- 1...Rg4
- 2.Qf6#
- 1...Rf8
- 2.Rg5#
- 2.Qg5#
- 1...Be3
- 2.Qf6#
- 1...Bd4
- 2.Rg5#
- 2.Qg5#
- 1...Sg4
- 2.Rg5#
- 2.Qg5#
- 1...Sxe7!
- threat
- 1.Se3+?
- Keys
- 1.Bc2!
- threat
- 2.dxe4#
- 1...Rxe6
- 2.Rg5#
- 1...Re1
- 2.Qf4#
- 1...Re2
- 2.Qf4#
- 1...Re3
- 2.Qf4#
- 1...Ra4
- 2.d4#
- 1...Rb4
- 2.d4#
- 1...Rc4
- 2.dxc4#
- 1...Rd4
- 2.Se3#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Rf6#
- 1...Re5
- 2.Qf7#
- threat
- 1.Bc2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(c);N_GUARD,P_PINS(B)::QAR1(H)
- R(c);N_GUARD::QAR1(H)
- R(c);N_GUARD,S_CUTB(g)::S(B)
- R(c);N_GUARD::QAR1(H),XR(c)
- R(c);SBLOCK::R1(G)
- R(c);SBLOCK::QAR2(H)
- R(c);SBLOCK,XS(F)::R1(G)
- R(h);XP(I)::S(F),XR(h)
- R(h);OGATE::PXR(h)=Q
- P(b);::R1(G)
- P(d);N_GUARD::S(B)
- Tries
- Try
- S(B);CHECK
- Vars
- R(c);XS(B)::QAR1(H)
- Refutation
- B(g);XS(B)
- Try
- B(A);XP(b)
- Threat
- DUALS(3)
- Vars
- R(c);SBLOCK,XS(F)::R1(G)
- R(c);::R1(G)
- Refutation
- S(a);XB(A)
- Try
- Q(H);XS(f)
- Threat
- DUALS(2)
- Vars
- K(e);P-FLIGHT::R(G)
- R(h);XP(I)::QAB1(H),XR(c)
- R(h);XB(J)::QAB1(H),XR(c)
- R(c);P_PINS(B)::R1(G)
- R(c);::R1(G)
- R(c);N_GUARD::QAR2(H)
- R(c);SBLOCK::R1(G)
- B(g);::QAB1(H),XR(c)
- Refutation
- R(c);XS(F)
- Try
- Q(H);
- Threat
- DUALS(3)
- Vars
- K(e);P-FLIGHT::R(G)
- R(c);XS(F)::QAR1(H)
- R(c);::QAR1(H)
- B(g);::QAR1(H)
- Refutation
- S(f);XQ(H)
- Try
- Actual
- B(A);
- Threat
- P(D),XR(c)
- Vars
- R(c);SBLOCK,XS(F)::R1(G)
- R(c);N_GUARD,P_PINS(B)::QAR1(H)
- R(c);N_GUARD::QAR1(H)
- R(c);::B(A)+P(D)
- R(c);OGATE::B(A)+P(D),XR(c)
- R(c);N_GUARD,S_CUTB(g)::S(B)
- R(c);N_GUARD::QAR1(H),XR(c)
- R(c);SBLOCK::R1(G)
- R(c);SBLOCK::QAR2(H)
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).