MESON Chess Problem Database
Problem Display
PID: 267787 (2b5/r1rBQpqN/1p5n/1P1kpn2/3N4/BPpPP1p1/8/6K1 w - - 0 1)
Stevenson, Edward
The Problemist, 1955
#2
10 + 12
SOLUTION
- SOUND
- Sets
- 1...Qf6
- 2.Sxf6#
- 1...Qf8
- 2.Sf6#
- 1...Qg4
- 2.Sf6#
- 1...Qg8
- 2.Sf6#
- 1...Rc4
- 2.bxc4#
- 1...Rc6
- 2.Bxc6#
- 1...Rb7
- 2.Bc6#
- 1...Sxe3
- 2.Qd6#
- 1...Sxd4
- 2.Qd6#
- 2.e4#
- 1...Sh4
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...exd4
- 2.Qe4#
- 2.e4#
- 1...e4
- 2.Qxe4#
- 2.dxe4#
- 1...f6
- 2.Qe6#
- 1...Qf6
- Tries
- 1.Sc2?
- threat
- 2.Sb4#
- 2.e4#
- 1...Sxe3
- 2.Qd6#
- 1...Sxe7
- 2.e4#
- 1...Qg4
- 2.Sf6#
- 1...Rc4
- 2.bxc4#
- 1...Sd6
- 2.Qxd6#
- 1...e4
- 2.Sb4#
- 2.Qxe4#
- 2.dxe4#
- 1...Ra4!
- threat
- 1.Se2?
- threat
- 2.e4#
- 1...Sxe3
- 2.Qd6#
- 1...Qg4
- 2.Sf6#
- 1...Rc4
- 2.bxc4#
- 1...Sd6
- 2.Qxd6#
- 1...e4
- 2.Sf4#
- 2.Qxe4#
- 2.dxe4#
- 1...Ra4!
- threat
- 1.Sf3?
- threat
- 2.e4#
- 1...Sxe3
- 2.Qd6#
- 1...Qg4
- 2.Sf6#
- 2.Qxe5#
- 1...Rc4
- 2.bxc4#
- 1...Sd6
- 2.Qxd6#
- 1...e4
- 2.Qxe4#
- 2.dxe4#
- 1...Ra4!
- threat
- 1.Sxf5?
- threat
- 2.Qd6#
- 2.e4#
- 1...Rxd7
- 2.e4#
- 1...Ra4
- 2.Qd6#
- 1...Qf6
- 2.Sxf6#
- 2.e4#
- 1...Qf8
- 2.Sf6#
- 2.e4#
- 1...Qg4
- 2.Sf6#
- 2.Qd6#
- 1...Qg6
- 2.e4#
- 1...Rc4
- 2.Qd6#
- 2.bxc4#
- 1...Rc6
- 2.Bxc6#
- 2.e4#
- 1...e4
- 2.Qd6#
- 2.Qxe4#
- 2.dxe4#
- 1...Sxf5!
- threat
- 1.Sc6?
- threat
- 2.Sb4#
- 2.e4#
- 1...Rxc6
- 2.Bxc6#
- 1...Sxe3
- 2.Qd6#
- 1...Sxe7
- 2.Sxe7#
- 2.e4#
- 1...Qg4
- 2.Sf6#
- 2.Qxe5#
- 1...Sd6
- 2.Qxd6#
- 1...e4
- 2.Sb4#
- 2.Qxe4#
- 2.dxe4#
- 1...Ra4!
- threat
- 1.Sc2?
- Keys
- 1.Se6!
- threat
- 2.e4#
- 1...Sxe3
- 2.Qd6#
- 1...fxe6
- 2.Qxe6#
- 1...e4
- 2.Sf4#
- 1...Ra4
- 2.Sxc7#
- 1...Qg4
- 2.Sf6#
- 1...Rc4
- 2.bxc4#
- 1...Sd6
- 2.Qxd6#
- threat
- 1.Se6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 7
- Sets
- Q(k);N_GUARD::S(J),XQ(k)
- Q(k);N_GUARD::S(J)
- R(i);OGATE::P(C),XR(i)
- R(i);N_GUARD::B(H),XR(i)
- R(i);N_GUARD::B(H)
- S(e);N_GUARD,XP(E)::QAR1(I)
- S(e);N_GUARD::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- P(j);N_GUARD::QAB1(I)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- S(e);N_GUARD,XP(E)::QAR1(I)
- S(e);XQ(I)::P(E)
- Q(k);N_GUARD::S(J)
- R(i);OGATE::P(C),XR(i)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- R(h);
- Try
- S(F);
- Threat
- P(E)
- Vars
- S(e);N_GUARD,XP(E)::QAR1(I)
- Q(k);N_GUARD::S(J)
- R(i);OGATE::P(C),XR(i)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- R(h);
- Try
- S(F);
- Threat
- P(E)
- Vars
- S(e);N_GUARD,XP(E)::QAR1(I)
- R(i);OGATE::P(C),XR(i)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- R(h);
- Try
- S(F);XS(e)
- Threat
- DUALS(2)
- Vars
- R(i);XB(H)::P(E)
- R(h);::QAR1(I)
- Q(k);::P(E)
- Refutation
- S(g);XS(F)
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- R(i);OGATE,XS(F)::B(H),XR(i)
- S(e);N_GUARD,XP(E)::QAR1(I)
- S(e);N_GUARD::QAR1(I),XS(e)
- Refutation
- R(h);
- Try
- Actual
- S(F);
- Threat
- P(E)
- Vars
- S(e);N_GUARD,XP(E)::QAR1(I)
- P(j);OGATE,XS(F)::QAB1(I),XP(j)
- P(d);N_GUARD::S(F)
- R(h);N_GUARD::S(F),XR(i)
- Q(k);N_GUARD::S(J)
- R(i);OGATE::P(C),XR(i)
- S(e);N_GUARD::QAR1(I),XS(e)
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).