MESON Chess Problem Database
Problem Display
PID: 243315 (K1Q5/1N1p4/p1nP2b1/R5b1/1n2k1N1/2P2RP1/4P1P1/5r2 w - - 0 1)
Andersson, Sven Tore
Skakbladet, 1952
#2
11 + 8
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sf2#
- 1...Rb1
- 2.Sf2#
- 1...Rc1
- 2.Sf2#
- 1...Rd1
- 2.Sf2#
- 1...Re1
- 2.Sf2#
- 1...Rg1
- 2.Sf2#
- 1...Rh1
- 2.Sf2#
- 1...Rf2
- 2.Sxf2#
- 1...Rxf3
- 2.gxf3#
- 1...Bc1
- 2.Sf6#
- 1...Bd2
- 2.Sf6#
- 1...Be3
- 2.Sf6#
- 2.Rxe3#
- 1...Bf4
- 2.Sf6#
- 1...Bh4
- 2.Re3#
- 1...Bf6
- 2.Sxf6#
- 2.Re3#
- 1...Bh6
- 2.Sf6#
- 1...Be7
- 2.Re3#
- 1...Bd8
- 2.Re3#
- 1...Sd3
- 2.exd3#
- 1...Sd5
- 2.Sc5#
- 1...Sd4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 2.Qc4#
- 1...Se7
- 2.Re5#
- 2.Qc4#
- 1...Sb8
- 2.Re5#
- 2.Qc4#
- 1...Sd8
- 2.Re5#
- 2.Qc4#
- 1...Ra1
- Tries
- 1.Rxg5?
- threat
- 2.Sf6#
- 2.Sc5#
- 2.Re3#
- 1...Rxf3
- 2.Sc5#
- 2.gxf3#
- 1...Se5
- 2.Sf6#
- 2.Rxe5#
- 1...Sc2
- 2.Sf6#
- 2.Sc5#
- 1...Sd3
- 2.Sf6#
- 2.Re3#
- 2.exd3#
- 1...Sd5
- 2.Sc5#
- 1...Bf5!
- threat
- 1.Qxc6+?
- 1...Sd5
- 2.Sc5#
- 2.Ra4#
- 2.Qxd5#
- 2.Qc4#
- 1...dxc6
- 2.Re5#
- 1...Sxc6!
- 1...Sd5
- 1.Qe8+?
- 1...Be7
- 2.Sf6#
- 2.Re3#
- 2.Qxg6#
- 1...Se5
- 2.Rxe5#
- 2.Qxe5#
- 1...Se7
- 2.Re5#
- 1...Bxe8!
- 1...Be7
- 1.Qg8?
- threat
- 2.Sc5#
- 2.Qxg6#
- 1...Rxf3
- 2.gxf3#
- 1...Sxa5
- 2.Sc5#
- 1...Bf5
- 2.Sc5#
- 1...Be3
- 2.Sf6#
- 2.Rxe3#
- 2.Qxg6#
- 1...Bf4
- 2.Sf6#
- 2.Qxg6#
- 1...Bh5
- 2.Sc5#
- 1...Bh7
- 2.Sc5#
- 2.Qxh7#
- 1...Be8
- 2.Sc5#
- 1...Sd3
- 2.Qd5#
- 2.Qxg6#
- 2.exd3#
- 1...Sd4
- 2.Sc5#
- 2.Re5#
- 1...Se5
- 2.Sc5#
- 2.Rxe5#
- 1...Se7
- 2.Sc5#
- 2.Re5#
- 2.Qc4#
- 1...Bf7!
- threat
- 1.Rxg5?
- Keys
- 1.Qxd7!
- 1...Rxf3
- 2.gxf3#
- 1...Sxa5
- 2.Qe6#
- 1...Bf5
- 2.Qxf5#
- 1...Ra1
- 2.Sf2#
- 1...Rb1
- 2.Sf2#
- 1...Rc1
- 2.Sf2#
- 1...Rd1
- 2.Sf2#
- 1...Re1
- 2.Sf2#
- 1...Rg1
- 2.Sf2#
- 1...Rh1
- 2.Sf2#
- 1...Rf2
- 2.Sxf2#
- 1...Bc1
- 2.Sf6#
- 1...Bd2
- 2.Sf6#
- 1...Be3
- 2.Sf6#
- 2.Rxe3#
- 1...Bf4
- 2.Sf6#
- 1...Bh4
- 2.Re3#
- 1...Bf6
- 2.Sxf6#
- 2.Re3#
- 1...Bh6
- 2.Sf6#
- 1...Be7
- 2.Re3#
- 1...Bd8
- 2.Re3#
- 1...Bh5
- 2.Qf5#
- 1...Bf7
- 2.Qf5#
- 1...Bh7
- 2.Qxh7#
- 1...Be8
- 2.Qf5#
- 1...Sa2
- 2.Qxc6#
- 1...Sc2
- 2.Qxc6#
- 1...Sd3
- 2.Qxc6#
- 2.exd3#
- 1...Sd5
- 2.Sc5#
- 1...Sd4
- 2.Re5#
- 1...Se5
- 2.Rxe5#
- 1...Sa7
- 2.Re5#
- 2.Qe6#
- 1...Se7
- 2.Re5#
- 2.Qe6#
- 1...Sb8
- 2.Re5#
- 2.Qe6#
- 1...Sd8
- 2.Re5#
- 1...Rxf3
- 1.Qxd7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD::S(F)
- R(a);N_GUARD::S(F),XR(a)
- R(a);OGATE,XR(D)::P(B),XR(a)
- B(d);N_GUARD::S(F)
- B(d);N_GUARD::R1(D)
- S(b);OGATE::P(A),XS(b)
- S(b);SBLOCK::S(I)
- S(f);N_GUARD::R1(G)
- S(f);N_GUARD::R1(G),XS(f)
- Tries
- Try
- R(G);XB(d)
- Threat
- DUALS(3)
- Vars
- S(b);::S(I)
- Refutation
- B(g);
- Try
- Q(K);CHECK,XS(f)
- Vars
- P(h);XQ(K)::R1(G)
- Refutation
- S(b);XQ(K)
- Try
- Q(K);CHECK
- Vars
- S(f);N_GUARD,P_SPINS(f)::R1(G)
- Refutation
- B(g);XQ(K)
- Try
- Q(K);
- Threat
- DUALS(2)
- Vars
- R(a);OGATE,XR(D)::P(B),XR(a)
- S(f);XR(G)::S(I)
- B(g);::S(I)
- Refutation
- B(g);
- Try
- Actual
- Q(K);XP(h)
- Vars
- R(a);OGATE,XR(D)::P(B),XR(a)
- S(f);N_GUARD,XR(G)::QAR2(K)
- B(g);N_GUARD::QAB1(K),XB(g)
- R(a);N_GUARD::S(F)
- R(a);N_GUARD::S(F),XR(a)
- B(d);N_GUARD::S(F)
- B(d);N_GUARD::R1(D)
- B(g);N_GUARD::QAB1(K)
- B(g);OGATEB::QAB(K),XB(g)
- S(b);N_GUARD::QAB(K),XS(f)
- S(b);SBLOCK::S(I)
- S(f);N_GUARD::R1(G)
- S(f);N_GUARD::R1(G),XS(f)
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).