MESON Chess Problem Database
Problem Display
PID: 164607 (2q1n1n1/2B5/pR4N1/2pk1r2/6RQ/K2P1p2/N7/2r5 w - - 0 1)
Rice, John Michael
StrateGems, 2015
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sc3#
- 1...Rd1
- 2.Sc3#
- 1...Re1
- 2.Sc3#
- 1...Rf1
- 2.Sc3#
- 1...Rg1
- 2.Sc3#
- 1...Rh1
- 2.Sc3#
- 1...Rc3+
- 2.Sxc3#
- 1...Rc4
- 2.dxc4#
- 1...Sd6
- 2.Rxd6#
- 1...Sef6
- 2.Rd6#
- 1...Sg7
- 2.Rd6#
- 1...Sgf6
- 2.Se7#
- 1...Sh6
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...Rb1
- Tries
- 1.Sf4+?
- 1...Kd4
- 2.Qf2#
- 1...Rxf4!
- 1...Kd4
- 1.Ra4?
- threat
- 2.Qe4#
- 1...Rc3+
- 2.Sxc3#
- 1...Sd6
- 2.Rxd6#
- 1...c4
- 2.Ra5#
- 1...Re1
- 2.Sc3#
- 2.Qc4#
- 1...Rc4
- 2.Qxc4#
- 2.dxc4#
- 1...Rf4
- 2.Sxf4#
- 1...Re5
- 2.Sf4#
- 1...Sef6
- 2.Rd6#
- 1...Sgf6
- 2.Se7#
- 1...Qe6!
- threat
- 1.Rc4?
- threat
- 2.Qe4#
- 1...Rc3+
- 2.Sxc3#
- 1...Rxc4
- 2.Qxc4#
- 2.dxc4#
- 1...Sd6
- 2.Rxd6#
- 1...Re1
- 2.Sc3#
- 1...Rf4
- 2.Sxf4#
- 1...Re5
- 2.Sf4#
- 1...Sef6
- 2.Rd6#
- 1...Sgf6
- 2.Se7#
- 1...Qe6!
- threat
- 1.Qe7?
- threat
- 2.Qe4#
- 1...Rc3+
- 2.Sxc3#
- 1...Sxe7
- 2.Sxe7#
- 1...Rf4
- 2.Qe5#
- 1...Qe6
- 2.Qxe6#
- 1...Re1
- 2.Sc3#
- 1...Rc4
- 2.dxc4#
- 1...Re5
- 2.Qxe5#
- 1...Sd6
- 2.Rxd6#
- 2.Qxd6#
- 1...Sef6
- 2.Rd6#
- 2.Qd6#
- 1...c4
- 2.Sb4#
- 1...Sgf6!
- threat
- 1.Sf4+?
- Keys
- 1.Qe1!
- threat
- 2.Qe4#
- 1...Rc3+
- 2.Sxc3#
- 1...Rxe1
- 2.Sc3#
- 1...Rf4
- 2.Qe5#
- 1...c4
- 2.Qa5#
- 1...Qe6
- 2.Qxe6#
- 1...Rc4
- 2.dxc4#
- 1...Re5
- 2.Qxe5#
- 1...Sd6
- 2.Rxd6#
- 1...Sef6
- 2.Rd6#
- 1...Sgf6
- 2.Se7#
- threat
- 1.Qe1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 8
- Sets
- R(a);N_GUARD::S(A)
- R(a);CHECK,N_GUARD::S(A),XR(a)
- R(a);OGATE::P(C),XR(a)
- S(h);N_GUARD::R1(F),XS(h)
- S(h);N_GUARD::R1(F)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- Tries
- Try
- S(G);CHECK
- Vars
- K(d);P-FLIGHT::QAB(E)
- Refutation
- R(e);XS(G)
- Try
- R(D);
- Threat
- QAB1(E)
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- S(h);N_GUARD::R1(F),XS(h)
- P(c);OGATEB::R(D)
- R(e);N_GUARD::S(G),XR(e)
- R(e);N_GUARD::S(G)
- S(h);N_GUARD::R1(F)
- S(i);N_GUARD::S(G)
- Refutation
- Q(g);
- Try
- R(D);
- Threat
- QAB1(E)
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- S(h);N_GUARD::R1(F),XS(h)
- R(a);N_GUARD::S(A)
- R(e);N_GUARD::S(G),XR(e)
- R(e);N_GUARD::S(G)
- S(h);N_GUARD::R1(F)
- S(i);N_GUARD::S(G)
- Refutation
- Q(g);
- Try
- Q(E);
- Threat
- QAB1(E)
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- S(i);XQ(E)::S(G),XS(i)
- R(e);N_GUARD::QAR1(E)
- Q(g);N_GUARD::QAB1(E),XQ(g)
- R(a);N_GUARD::S(A)
- R(a);OGATE::P(C),XR(a)
- R(e);N_GUARD::QAR1(E),XR(e)
- P(c);N_GUARD::S(A)
- Refutation
- S(i);
- Try
- Actual
- Q(E);
- Threat
- QAB1(E)
- Vars
- R(a);CHECK,N_GUARD::S(A),XR(a)
- R(a);N_GUARD,XQ(E)::S(A)
- R(e);N_GUARD::QAR1(E)
- P(c);OGATEB::QAR(E)
- Q(g);N_GUARD::QAB1(E),XQ(g)
- R(a);OGATE::P(C),XR(a)
- R(e);N_GUARD::QAR1(E),XR(e)
- S(h);N_GUARD::R1(F),XS(h)
- S(h);N_GUARD::R1(F)
- S(i);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).