MESON Chess Problem Database
Problem Display
PID: 160533 (1K5B/1pPQ1p2/1p6/pp4Rb/1rk1Nb2/2pNn3/2P1n3/3r4 w - - 0 1)
Shire, David J
British Chess Magazine, 2012
#2
8 + 13
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Qxd3#
- 1...Ra4
- 2.Qxb5#
- 1...Be5
- 2.Sxe5#
- 1...Bxg5
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Bd6
- 2.Sxd6#
- 1...Bxc7+
- 2.Qxc7#
- 1...Sc1
- 2.Qd4#
- 1...Sg1
- 2.Qd4#
- 1...Sg3
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sf1
- 2.Qd5#
- 1...Sxc2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sg4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Rxd3
- Tries
- 1.Kxb7?
- threat
- 2.Qc6#
- 1...Sxc2
- 2.Qd5#
- 1...Be5
- 2.Sxe5#
- 1...Bd6
- 2.Sxd6#
- 1...Sd4
- 2.Qxd4#
- 1...f6!
- threat
- 1.Be5?
- threat
- 2.c8Q#
- 2.c8R#
- 1...Rxd3
- 2.Qxd3#
- 2.c8Q#
- 2.c8R#
- 1...Bxe5
- 2.Sxe5#
- 1...Bxg5
- 2.c8Q#
- 2.c8R#
- 1...Ra1
- 2.c8Q#
- 2.c8R#
- 1...Rdb1
- 2.c8Q#
- 2.c8R#
- 1...Rc1
- 2.c8Q#
- 2.c8R#
- 1...Re1
- 2.c8Q#
- 2.c8R#
- 1...Rf1
- 2.c8Q#
- 2.c8R#
- 1...Rg1
- 2.c8Q#
- 2.c8R#
- 1...Rh1
- 2.c8Q#
- 2.c8R#
- 1...Rd2
- 2.c8Q#
- 2.c8R#
- 1...Rbb1
- 2.c8Q#
- 2.c8R#
- 1...Rb2
- 2.c8Q#
- 2.c8R#
- 1...Rb3
- 2.c8Q#
- 2.c8R#
- 1...Ra4
- 2.c8Q#
- 2.c8R#
- 1...Bh2
- 2.c8Q#
- 2.c8R#
- 1...Bg3
- 2.c8Q#
- 2.c8R#
- 1...Bf3
- 2.c8Q#
- 2.c8R#
- 1...Bg4
- 2.c8Q#
- 2.c8R#
- 1...Bg6
- 2.c8Q#
- 2.c8R#
- 1...Sc1
- 2.Qd4#
- 2.c8Q#
- 2.c8R#
- 1...Sg1
- 2.Qd4#
- 2.c8Q#
- 2.c8R#
- 1...Sg3
- 2.Qd4#
- 2.c8Q#
- 2.c8R#
- 1...Sd4
- 2.Qxd4#
- 1...Sf1
- 2.c8Q#
- 2.c8R#
- 1...Sg2
- 2.c8Q#
- 2.c8R#
- 1...Sg4
- 2.c8Q#
- 2.c8R#
- 1...Sd5
- 2.Sd6#
- 1...Sf5
- 2.c8Q#
- 2.c8R#
- 1...a4
- 2.c8Q#
- 2.c8R#
- 1...f5
- 2.c8Q#
- 2.c8R#
- 1...f6
- 2.c8Q#
- 2.c8R#
- 1...Sxc2!
- threat
- 1.Qe6+?
- 1...Sd5
- 2.Qxd5#
- 1...fxe6!
- 1...Sd5
- 1.Qd6?
- threat
- 2.c8Q#
- 2.c8R#
- 1...Rxd3
- 2.Qxd3#
- 2.c8Q#
- 2.c8R#
- 1...Bxg5
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Bxd6
- 2.Sxd6#
- 1...Sxc2
- 2.Qd5#
- 1...Ra1
- 2.c8Q#
- 2.c8R#
- 1...Rdb1
- 2.c8Q#
- 2.c8R#
- 1...Rc1
- 2.c8Q#
- 2.c8R#
- 1...Re1
- 2.c8Q#
- 2.c8R#
- 1...Rf1
- 2.c8Q#
- 2.c8R#
- 1...Rg1
- 2.c8Q#
- 2.c8R#
- 1...Rh1
- 2.c8Q#
- 2.c8R#
- 1...Rd2
- 2.c8Q#
- 2.c8R#
- 1...Rbb1
- 2.c8Q#
- 2.c8R#
- 1...Rb2
- 2.c8Q#
- 2.c8R#
- 1...Rb3
- 2.c8Q#
- 2.c8R#
- 1...Ra4
- 2.c8Q#
- 2.c8R#
- 1...Bh2
- 2.c8Q#
- 2.c8R#
- 1...Bg3
- 2.c8Q#
- 2.c8R#
- 1...Be5
- 2.Sxe5#
- 2.c8Q#
- 2.c8R#
- 1...Bf3
- 2.c8Q#
- 2.c8R#
- 1...Bg6
- 2.c8Q#
- 2.c8R#
- 1...Sc1
- 2.Qd4#
- 2.c8Q#
- 2.c8R#
- 1...Sg1
- 2.Qd4#
- 2.c8Q#
- 2.c8R#
- 1...Sg3
- 2.Qd4#
- 2.c8Q#
- 2.c8R#
- 1...Sd4
- 2.Qxd4#
- 1...Sf1
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...Sg2
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...Sg4
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...Sd5
- 2.Qxd5#
- 1...Sf5
- 2.c8Q#
- 2.c8R#
- 1...a4
- 2.Qxb4#
- 2.c8Q#
- 2.c8R#
- 1...f5
- 2.c8Q#
- 2.c8R#
- 1...f6
- 2.c8Q#
- 2.c8R#
- 1...Bg4!
- threat
- 1.Qxf7+?
- 1...Sd5
- 2.Qxd5#
- 1...Bxf7!
- 1...Sd5
- 1.Kxb7?
- Keys
- 1.Re5!
- threat
- 2.c8Q#
- 2.c8R#
- 1...Rxd3
- 2.Qxd3#
- 2.c8Q#
- 2.c8R#
- 1...Bxe5
- 2.Sxe5#
- 1...Sxc2
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Ra1
- 2.c8Q#
- 2.c8R#
- 1...Rdb1
- 2.c8Q#
- 2.c8R#
- 1...Rc1
- 2.c8Q#
- 2.c8R#
- 1...Re1
- 2.c8Q#
- 2.c8R#
- 1...Rf1
- 2.c8Q#
- 2.c8R#
- 1...Rg1
- 2.c8Q#
- 2.c8R#
- 1...Rh1
- 2.c8Q#
- 2.c8R#
- 1...Rd2
- 2.c8Q#
- 2.c8R#
- 1...Rbb1
- 2.c8Q#
- 2.c8R#
- 1...Rb2
- 2.c8Q#
- 2.c8R#
- 1...Rb3
- 2.c8Q#
- 2.c8R#
- 1...Ra4
- 2.c8Q#
- 2.c8R#
- 1...Bh2
- 2.c8Q#
- 2.c8R#
- 1...Bg3
- 2.c8Q#
- 2.c8R#
- 1...Bg5
- 2.c8Q#
- 2.c8R#
- 1...Bh6
- 2.c8Q#
- 2.c8R#
- 1...Bf3
- 2.c8Q#
- 2.c8R#
- 1...Bg4
- 2.c8Q#
- 2.c8R#
- 1...Bg6
- 2.c8Q#
- 2.c8R#
- 1...Sc1
- 2.c8Q#
- 2.c8R#
- 1...Sg1
- 2.c8Q#
- 2.c8R#
- 1...Sg3
- 2.c8Q#
- 2.c8R#
- 1...Sd4
- 2.Sd6#
- 1...Sf1
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...Sg2
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...Sg4
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...Sf5
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...a4
- 2.c8Q#
- 2.c8R#
- 1...f5
- 2.c8Q#
- 2.c8R#
- 1...f6
- 2.c8Q#
- 2.c8R#
- threat
- 1.Re5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 10
- Sets
- R(a);OGATE,XS(B)::QAB1(F),XR(a)
- R(e);N_GUARD::QAB1(F),XP(i)
- B(g);N_GUARD::S(B),XB(g)
- B(g);N_GUARD::S(C),XB(g)
- B(g);CHECK,OGATE,XP(E)::QAR(F),XB(g)
- S(b);N_GUARD::QAR1(F)
- S(b);N_GUARD::QAR1(F),XS(b)
- S(d);N_GUARD::QAB1(F)
- S(d);N_GUARD,XP(A)::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- Tries
- Try
- K(G);N_SPINP(E),P-FLIGHT,XP(l)
- Threat
- QAR2(F)
- Vars
- S(d);N_GUARD,XP(A)::QAB1(F)
- B(g);N_GUARD::S(B),XB(g)
- B(g);N_GUARD::S(C),XB(g)
- S(b);N_GUARD::QAR1(F),XS(b)
- Refutation
- P(m);
- Try
- B(H);N_SPINP(E)
- Threat
- P=Q
- Vars
- B(g);P_PINP(E),XB(H)::S(B),XB(g)
- B(g);XR(D)::P=Q
- R(a);::P=Q
- R(e);::P=Q
- B(g);::P=Q
- B(j);::P=Q
- S(b);N_GUARD::QAR1(F),XS(b)
- S(d);::P=Q
- S(d);SBLOCK::S(C)
- P(h);::P=Q
- P(m);::P=Q
- Refutation
- S(d);XP(A)
- Try
- Q(F);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB1(F),XS(d)
- Refutation
- P(m);XQ(F)
- Try
- Q(F);N_SPINP(E)
- Threat
- P=Q
- Vars
- B(g);P_PINP(E),XQ(F)::S(C),XB(g)
- S(d);N_GUARD,XP(A)::QAB1(F)
- R(a);::P=Q
- R(e);::P=Q
- B(g);::P=Q
- B(j);::P=Q
- S(b);N_GUARD::QAR1(F),XS(b)
- S(d);N_GUARD::QAB1(F),XS(d)
- S(d);::P=Q
- P(m);::P=Q
- Refutation
- B(j);
- Try
- Q(F);CHECK,XP(m)
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB1(F),XS(d)
- Refutation
- B(j);XQ(F)
- Try
- Actual
- R(D);N_SPINP(E)
- Threat
- P=Q
- Vars
- B(g);P_PINP(E),XR(D)::S(B),XB(g)
- S(d);N_GUARD,XP(A)::QAB1(F)
- S(d);N_GUARD::QAB1(F),XS(d)
- R(a);::P=Q
- R(e);::P=Q
- B(g);::P=Q
- B(j);::P=Q
- S(b);::P=Q
- S(b);SBLOCK::S(C)
- P(h);::P=Q
- P(m);::P=Q
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).