MESON Chess Problem Database
Problem Display
PID: 87538 (3Qn2b/8/5q2/5R2/RB3K1k/5PN1/5p1P/5B1n w - - 0 1)
Hicks, Geoffrey K
The Problemist, 1992
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qg5+
- 2.Qxg5#
- 1...Qe7
- 2.Rh5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Sg7
- 2.Qxf6#
- 1...Qg5+
- Tries
- 1.Ke3?
- threat
- 2.Be1#
- 2.Bd2#
- 2.Ba3#
- 2.Bc3#
- 2.Ba5#
- 2.Bc5#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Rh5#
- 1...Qg5+
- 2.Rf4#
- 2.Qxg5#
- 1...Qe7+
- 2.Bxe7#
- 1...Qxd8
- 2.Be7#
- 2.Rh5#
- 1...Sd6
- 2.Bxd6#
- 2.Rh5#
- 1...Sg7
- 2.Be1#
- 2.Bd2#
- 2.Ba3#
- 2.Bc3#
- 2.Ba5#
- 2.Bc5#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qxf6#
- 1...Sxg3!
- threat
- 1.Bd2?
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Qxg5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Qe7
- 2.Rh5#
- 1...Sd6!
- threat
- 1.Ba3?
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Qxg5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Qe7
- 2.Rh5#
- 1...Sd6!
- threat
- 1.Bc3?
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Qxg5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Qe7
- 2.Rh5#
- 1...Sd6!
- threat
- 1.Ba5?
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Qxg5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Qe7
- 2.Rh5#
- 1...Sd6!
- threat
- 1.Bc5?
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Qxg5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Qe7
- 2.Rh5#
- 1...Sd6!
- threat
- 1.Bd6?
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Qxg5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Qe7
- 2.Rh5#
- 1...Sxd6!
- threat
- 1.Bf8?
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Qxg5#
- 1...Qxd8
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Qe7
- 2.Rh5#
- 1...Sd6!
- threat
- 1.Qxf6+?
- 1...Bxf6
- 2.Rh5#
- 1...Sxf6!
- 1...Bxf6
- 1.Ke3?
- Keys
- 1.Be7!
- threat
- 2.Ke3#
- 1...Qg5+
- 2.Bxg5#
- 1...Qxe7
- 2.Rh5#
- 1...Sxg3
- 2.hxg3#
- 1...Sd6
- 2.Qxh8#
- threat
- 1.Be7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H)::R1(H)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- S(e);N_GUARD,S_CUTB(f)::QAB(I),XQ(d)
- Tries
- Try
- K(G);N_SPINR(H),S_FLIGHT
- Threat
- DUALS(10)
- Vars
- Q(d);CHECK::R(E)+B(F),DCHECK,XQ(d)
- Refutation
- S(a);XS(D)
- Try
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- Q(d);N_PINR(H)::R1(H)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- Q(d);N_PINR(H)::R1(H)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- Q(d);N_PINR(H)::R1(H)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- Q(d);N_PINR(H)::R1(H)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- Q(d);N_PINR(H)::R1(H)
- Refutation
- S(e);
- Try
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- Q(d);N_PINR(H)::R1(H)
- Refutation
- S(e);XB(F)
- Try
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::QAB1(I),XQ(d)
- Q(d);N_PINR(H),N_SPINQ(d),XQ(I)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- Q(d);N_PINR(H)::R1(H)
- Refutation
- S(e);
- Try
- Q(I);CHECK,N_SPINR(H),XQ(d)
- Vars
- B(f);XQ(I)::R1(H)
- Refutation
- S(e);XQ(I)
- Try
- Actual
- B(F);
- Threat
- R(E)+K(G)
- Vars
- Q(d);CHECK,N_PINR(H),OGATE::B(F),XQ(d)
- Q(d);N_PINR(H),XB(F)::R1(H)
- S(a);OGATE,XS(D)::P(B),XS(a)
- S(e);OGATE::QAR(I),XB(f)
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).