MESON Chess Problem Database
Problem Display
PID: 148313 (n3N1B1/7n/4q3/1K1kB2R/3bb3/5R2/1p4Q1/1N6 w - - 0 1)
Persson, Ragnar
Sydsvenska Dagbladet Snallposten, 1923
(First published on Sun Sep 9 1923)
#2
8 + 7
| 14868 | Pirnie Collection | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qf7
- 2.Bxf7#
- 1...Qxg8
- 2.Qxg8#
- 1...Bg1
- 2.Sc3#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Be3
- 2.Sc3#
- 1...Bc5
- 2.Sc3#
- 1...Bxe5
- 2.Rd3#
- 1...Bb6
- 2.Sc3#
- 1...Ba7
- 2.Sc3#
- 1...Bxb1
- 2.Rd3#
- 1...Bc2
- 2.Rd3#
- 1...Bd3+
- 2.Rxd3#
- 1...Bxf3
- 2.Qxf3#
- 1...Bf5
- 2.Rfxf5#
- 1...Bg6
- 2.Rff5#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...Sb6
- 2.Sc7#
- 1...Sc7+
- 2.Sxc7#
- 1...Qf7
- Tries
- 1.Bh2+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rfh3#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Bg3+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Bxd4+?
- 1...Kxd4
- 2.Qg1#
- 2.Qxb2#
- 2.Qf2#
- 1...Bf5
- 2.Rd3#
- 2.Rf4#
- 1...Sg5!
- 1...Kxd4
- 1.Bf4+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rfh3#
- 1...Sg5!
- 1...Be5
- 1.Bd6+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rfh3#
- 2.Rf4#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Bf6+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rfh3#
- 2.Rf4#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Bc7+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rfh3#
- 2.Rf4#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Bg7+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rfh3#
- 2.Rf4#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Bb8+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rfh3#
- 2.Rf4#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Bh8+?
- 1...Be5
- 2.Rd3#
- 1...Bf5
- 2.Rf1#
- 2.Rf2#
- 2.Ra3#
- 2.Rb3#
- 2.Rc3#
- 2.Rd3#
- 2.Re3#
- 2.Rg3#
- 2.Rfh3#
- 2.Rf4#
- 2.Rfxf5#
- 1...Sg5!
- 1...Be5
- 1.Rd3?
- threat
- 2.Sc3#
- 2.Rxd4#
- 1...Sc7+
- 2.Sxc7#
- 1...Qxg8
- 2.Qxg8#
- 1...Qf7
- 2.Bxf7#
- 1...Sg5!
- threat
- 1.Rf4?
- threat
- 2.Qxe4#
- 1...Sc7+
- 2.Sxc7#
- 1...Qxg8
- 2.Qxg8#
- 1...Bxg2
- 2.Rxd4#
- 1...Qf7
- 2.Bxf7#
- 1...Bf3
- 2.Rxd4#
- 2.Qxf3#
- 1...Sf6
- 2.Sxf6#
- 1...Sg5!
- threat
- 1.Qg1?
- threat
- 2.Qxd4#
- 1...Sc7+
- 2.Sxc7#
- 1...Qxg8
- 2.Qxg8#
- 1...Bxg1
- 2.Sc3#
- 1...Bxe5
- 2.Sc3#
- 2.Qc5#
- 1...Qf7
- 2.Bxf7#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.Qc5#
- 1...Be3
- 2.Sc3#
- 1...Bc5
- 2.Sc3#
- 2.Qxc5#
- 1...Bb6
- 2.Sc3#
- 1...Ba7
- 2.Sc3#
- 1...Bd3+!
- threat
- 1.Bh2+?
- Keys
- 1.Rhf5!
- 1...Bd3+
- 2.Rxd3#
- 1...Sc7+
- 2.Sxc7#
- 1...Qxg8
- 2.Qxg8#
- 1...Bxe5
- 2.Rd3#
- 1...Bxb1
- 2.Rd3#
- 1...Bxf3
- 2.Qxf3#
- 1...Bxf5
- 2.Rxf5#
- 1...Qf7
- 2.Bxf7#
- 1...Bc2
- 2.Rd3#
- 1...Sg5
- 2.Sf6#
- 1...Bg1
- 2.Sc3#
- 1...Bf2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 1...Be3
- 2.Sc3#
- 1...Bc5
- 2.Sc3#
- 1...Bb6
- 2.Sc3#
- 1...Ba7
- 2.Sc3#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...Sb6
- 2.Sc7#
- 1...Bd3+
- 1.Rhf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- Q(e);OGATEB::B(H),XQ(e)
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(B),XQ(e)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- B(b);OGATEB,P_SPINB(b),XB(E)::R(C)
- B(c);OGATEB,XS(A)::QAB(B)+R(C)
- B(c);OGATEB::QAB(B)+R(C)
- B(c);CHECK,OGATEB::QAB(B)+R(C),XB(c)
- B(c);OGATE,P_SPINB(c),XR(C)::QAB(B),XB(c)
- B(c);OGATEB::QAB(B)+R(C),XB(c)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- S(g);N_GUARD::S(G)
- S(g);CHECK,N_GUARD::S(G),XS(g)
- Tries
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK,XB(b)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- B(E);CHECK
- Vars
- B(b);P_SPINB(b),S_CUTS(f)::R(C)
- Refutation
- S(f);P_SPINS(f)
- Try
- R(C);P_PINB(b)
- Threat
- DUALS(2)
- Vars
- S(g);CHECK,N_GUARD::S(G),XS(g)
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(B),XQ(e)
- Q(e);OGATEB::B(H),XQ(e)
- Refutation
- S(f);
- Try
- R(C);P_PINB(c)
- Threat
- QAB1(B),XB(c)
- Vars
- S(g);CHECK,N_GUARD::S(G),XS(g)
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(B),XQ(e)
- B(c);N_SPINB(c),OGATE,XQ(B)::R1(C),XB(b)
- Q(e);OGATEB::B(H),XQ(e)
- S(f);N_GUARD::S(G),XS(f)
- Refutation
- S(f);
- Try
- Q(B);
- Threat
- QAR1(B),XB(b)
- Vars
- S(g);CHECK,N_GUARD::S(G),XS(g)
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(B),XQ(e)
- B(b);N_GUARD,XQ(B)::S(A)
- Q(e);OGATEB::B(H),XQ(e)
- B(b);N_GUARD::S(A)
- Refutation
- B(c);CHECK
- Try
- Actual
- R(F);
- Vars
- B(c);CHECK,OGATEB::QAB(B)+R(C),XB(c)
- S(g);CHECK,N_GUARD::S(G),XS(g)
- Q(e);N_SPINQ(e),OGATE,XB(H)::QAB(B),XQ(e)
- B(b);OGATEB,P_SPINB(b),XB(E)::R(C)
- B(c);OGATEB,XS(A)::QAB(B)+R(C)
- B(c);OGATE,P_SPINB(c),XR(C)::QAB(B),XB(c)
- B(c);OGATE,XR(F)::QAB(B)+R(C),XB(c)
- Q(e);OGATEB::B(H),XQ(e)
- B(c);OGATEB::QAB(B)+R(C)
- S(f);N_GUARD::S(G)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::S(A),XB(b)
- S(f);N_GUARD::S(G),XS(f)
- S(g);N_GUARD::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).