MESON Chess Problem Database
Problem Display
PID: 202218 (1n1nR3/b1Pr4/2RB1pp1/1K1k2pP/N2pp3/5p1Q/4N3/8 w - - 0 1)
Berggren, G
Springaren, 1988
#2
9 + 11
SOLUTION
- SOUND
- Sets
- 1...Bb6
- 2.Sxb6#
- 1...Sxc6
- 2.Qe6#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sf7
- 2.Qe6#
- 1...fxe2
- 2.Qb3#
- 1...f2
- 2.Qb3#
- 1...d3
- 2.Sac3#
- 1...e3
- 2.Qxf3#
- 1...g4
- 2.Sf4#
- 1...f5
- 2.Re5#
- 1...gxh5
- 2.Qf5#
- 1...Bb6
- Tries
- 1.Bf4?
- 1...Rxc7
- 2.Rd6#
- 1...Sbxc6
- 2.Qxd7#
- 1...Sdxc6
- 2.Qe6#
- 1...fxe2
- 2.Qb3#
- 1...gxf4
- 2.Sxf4#
- 1...gxh5
- 2.Qf5#
- 1...Bc5
- 2.Rxc5#
- 1...Rd6
- 2.Rxd6#
- 1...Re7
- 2.Rd6#
- 1...Rf7
- 2.Rd6#
- 1...Rg7
- 2.Rd6#
- 1...Rh7
- 2.Rd6#
- 1...Bb6
- 2.Sxb6#
- 1...Sa6
- 2.Qxd7#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sf7
- 2.Qe6#
- 1...f2
- 2.Qb3#
- 1...d3
- 2.Sac3#
- 1...e3
- 2.Qxf3#
- 1...f5
- 2.Re5#
- 1...g4!
- 1...Rxc7
- 1.Rc5+?
- 1...Kxd6
- 2.Qh2#
- 2.Qg3#
- 2.c8S#
- 1...Bxc5!
- 1...Kxd6
- 1.Bf4?
- Keys
- 1.Bh2!
- 1...Rxc7
- 2.Rd6#
- 1...Sbxc6
- 2.Qxd7#
- 1...Sdxc6
- 2.Qe6#
- 1...fxe2
- 2.Qb3#
- 1...gxh5
- 2.Qf5#
- 1...Rd6
- 2.Rxd6#
- 1...Re7
- 2.Rd6#
- 1...Rf7
- 2.Rd6#
- 1...Rg7
- 2.Rd6#
- 1...Rh7
- 2.Rd6#
- 1...Bc5
- 2.Rxc5#
- 1...Bb6
- 2.Sxb6#
- 1...Sa6
- 2.Qxd7#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sf7
- 2.Qe6#
- 1...f2
- 2.Qb3#
- 1...d3
- 2.Sac3#
- 1...e3
- 2.Qxf3#
- 1...g4
- 2.Sf4#
- 1...f5
- 2.Re5#
- 1...Rxc7
- 1.Bh2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 9
- REMOVED MATES = 0
- Sets
- B(h);N_GUARD::S(C),XB(h)
- S(k);N_GUARD,XR(F)::QAB1(B)
- S(k);N_GUARD::QAB1(B),XS(k)
- S(k);N_GUARD::QAB1(B)
- P(a);OGATE,XS(A)::QAB(B)
- P(a);OGATE::QAB(B)
- P(b);N_GUARD::S(C)
- P(c);OGATEB::QAB(B),XP(a)
- P(e);N_GUARD::S(A)
- P(f);N_GUARD::R1(I)
- P(g);N_GUARD,XP(E)::QAR2(B)
- Tries
- Try
- B(G);
- Vars
- R(i);N_GUARD,XP(H)::R1(F)
- S(j);N_GUARD,XR(F)::QAR2(B),XR(i)
- S(k);N_GUARD,XR(F)::QAB1(B)
- P(a);OGATE,XS(A)::QAB(B)
- P(e);XB(G)::S(A),XP(e)
- P(g);N_GUARD,XP(E)::QAR2(B)
- B(h);N_GUARD::R1(F),XB(h)
- R(i);N_GUARD::R1(F),XR(i)
- R(i);N_GUARD::R1(F)
- B(h);N_GUARD::S(C),XB(h)
- S(j);N_GUARD::QAR2(B),XR(i)
- S(k);N_GUARD::QAB1(B),XS(k)
- S(k);N_GUARD::QAB1(B)
- P(a);OGATE::QAB(B)
- P(b);N_GUARD::S(C)
- P(c);OGATEB::QAB(B),XP(a)
- P(f);N_GUARD::R1(I)
- Refutation
- P(e);
- Try
- R(F);CHECK
- Refutation
- B(h);XR(F)
- Try
- Actual
- B(G);
- Vars
- R(i);N_GUARD,XP(H)::R1(F)
- S(j);N_GUARD,XR(F)::QAR2(B),XR(i)
- S(k);N_GUARD,XR(F)::QAB1(B)
- P(a);OGATE,XS(A)::QAB(B)
- P(g);N_GUARD,XP(E)::QAR2(B)
- R(i);N_GUARD::R1(F),XR(i)
- R(i);N_GUARD::R1(F)
- B(h);N_GUARD::R1(F),XB(h)
- B(h);N_GUARD::S(C),XB(h)
- S(j);N_GUARD::QAR2(B),XR(i)
- S(k);N_GUARD::QAB1(B),XS(k)
- S(k);N_GUARD::QAB1(B)
- P(a);OGATE::QAB(B)
- P(b);N_GUARD::S(C)
- P(c);OGATEB::QAB(B),XP(a)
- P(e);N_GUARD::S(A)
- P(f);N_GUARD::R1(I)
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).