MESON Chess Problem Database
Problem Display
PID: 243377 (b3r3/3Q1R1p/6pP/2p3P1/4k2N/2P5/1n1nPPKB/2b5 w - - 0 1)
Shire, David J
The Problemist, 1989
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Re5
- 2.Rf4#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Rxe7#
- 1...Rb8
- 2.Re7#
- 2.Qe6#
- 1...Rc8
- 2.Re7#
- 2.Qe6#
- 1...Rd8
- 2.Re7#
- 2.Qe6#
- 1...Rf8
- 2.Re7#
- 2.Qe6#
- 1...Rg8
- 2.Re7#
- 2.Qe6#
- 1...Rh8
- 2.Re7#
- 2.Qe6#
- 1...Bd5
- 2.Qg4#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.exd3#
- 1...Sa4
- 2.Qd3#
- 1...Sbc4
- 2.Qd3#
- 1...Sf3
- 2.exf3#
- 1...c4
- 2.Qd4#
- 1...Re5
- Tries
- 1.Sxg6?
- threat
- 2.Rf4#
- 2.Qf5#
- 1...Sb1
- 2.Qf5#
- 1...Re5
- 2.Rf4#
- 1...Re6
- 2.Rf4#
- 2.Qxe6#
- 1...Rf8
- 2.Re7#
- 2.Qf5#
- 2.Qe6#
- 1...Sd3
- 2.Qf5#
- 2.Qxd3#
- 2.exd3#
- 1...Sf1
- 2.Qf5#
- 1...Sb3
- 2.Qf5#
- 1...Sf3
- 2.Qf5#
- 2.exf3#
- 1...Sdc4
- 2.Qf5#
- 1...hxg6!
- threat
- 1.Rf5?
- threat
- 2.Qxe8#
- 1...gxf5
- 2.Qxf5#
- 1...Re5
- 2.Rf4#
- 2.Rxe5#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Qxe7#
- 1...Rb8
- 2.Re5#
- 2.Qe6#
- 2.Qe7#
- 1...Rc8
- 2.Re5#
- 2.Qe6#
- 2.Qe7#
- 1...Rd8
- 2.Re5#
- 2.Qe6#
- 2.Qe7#
- 1...Rf8
- 2.Re5#
- 2.Qe6#
- 2.Qe7#
- 1...Rg8
- 2.Re5#
- 2.Qe6#
- 2.Qe7#
- 1...Rh8
- 2.Re5#
- 2.Qe6#
- 2.Qe7#
- 1...Bd5
- 2.Qxd5#
- 1...Bc6
- 2.Qxc6#
- 1...Sd3
- 2.Qxd3#
- 2.exd3#
- 1...Sbc4
- 2.Qd3#
- 1...Sf3
- 2.exf3#
- 1...Sdc4!
- threat
- 1.Qxd2?
- threat
- 2.f3#
- 1...Sd3
- 2.Qxd3#
- 1...Bxd2!
- threat
- 1.Sxg6?
- Keys
- 1.Sf5!
- 1...gxf5
- 2.Qxf5#
- 1...Sb1
- 2.f3#
- 1...Re5
- 2.Sg3#
- 1...Re6
- 2.Qxe6#
- 1...Re7
- 2.Rxe7#
- 1...Rb8
- 2.Re7#
- 2.Qe6#
- 1...Rc8
- 2.Re7#
- 2.Qe6#
- 1...Rd8
- 2.Re7#
- 2.Qe6#
- 1...Rf8
- 2.Re7#
- 2.Qe6#
- 1...Rg8
- 2.Re7#
- 2.Qe6#
- 1...Rh8
- 2.Re7#
- 2.Qe6#
- 1...Bd5
- 2.Sd6#
- 1...Bc6
- 2.Qxc6#
- 1...Bb7
- 2.Qxb7#
- 1...Sd1
- 2.Qd3#
- 1...Sd3
- 2.Qxd3#
- 2.exd3#
- 1...Sa4
- 2.Qd3#
- 1...Sbc4
- 2.Qd3#
- 1...Sf1
- 2.f3#
- 1...Sb3
- 2.f3#
- 1...Sf3
- 2.exf3#
- 1...Sdc4
- 2.f3#
- 1...c4
- 2.Qd4#
- 1...gxf5
- 1.Sf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(i);SBLOCK::R1(J)
- R(i);N_GUARD::QAR2(I),XR(i)
- R(i);N_GUARD::R(J),XR(i)
- B(h);SBLOCK::QAR2(I)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::QAB1(I)
- S(c);OGATE::P(A),XS(c)
- P(e);N_GUARD::QAR1(I)
- Tries
- Try
- S(F);XP(f)
- Threat
- DUALS(2)
- Vars
- S(c);::QAB1(I)
- R(i);::R1(J)
- Refutation
- P(g);XS(F)
- Try
- R(J);
- Threat
- QAR(I),XR(i)
- Vars
- P(f);OGATE,XR(J)::QAB1(I),XP(f)
- R(i);N_GUARD::QAR2(I),XR(i)
- R(i);N_GUARD::QAR(I),XR(i)
- B(h);N_GUARD::QAB1(I),XB(h)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::QAB1(I)
- S(c);OGATE::P(A),XS(c)
- Refutation
- S(c);
- Try
- Q(I);XS(c)
- Threat
- P(B)
- Vars
- S(b);N_GUARD::QAB1(I),XS(b)
- Refutation
- B(a);XQ(I)
- Try
- Actual
- S(F);
- Vars
- P(f);OGATE,XS(F)::QAB1(I),XP(f)
- S(c);N_GUARD::P(B)
- R(i);SBLOCK::S(F)
- R(i);N_GUARD::QAR2(I),XR(i)
- R(i);N_GUARD::R(J),XR(i)
- B(h);SBLOCK::S(F)
- B(h);N_GUARD::QAB(I),XB(h)
- S(b);N_GUARD::QAB1(I)
- S(c);OGATE::P(A),XS(c)
- P(e);N_GUARD::QAR1(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).