MESON Chess Problem Database
Problem Display
PID: 199707 (4Q3/2p2K2/2p5/N1prp1N1/3k1P2/BR1np3/4P3/4n3 w - - 0 1)
Rice, John Michael
Variantim, 1997
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Rd7+
- 2.Qxd7#
- 1...Rd8
- 2.Qxd8#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...Sxf4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...exf4
- 2.Qe4#
- 1...e4
- 2.Se6#
- 2.Qxe4#
- 1...Rd7+
- Tries
- 1.Kf6?
- 1...Sxf4
- 2.Bb2#
- 1...exf4
- 2.Qe4#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Qxd8#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...e4
- 2.Se6#
- 2.Qxe4#
- 1...Rd6+!
- 1...Sxf4
- 1.Kg7?
- 1...Rd7+
- 2.Qxd7#
- 1...Sxf4
- 2.Bb2#
- 1...exf4
- 2.Qe4#
- 1...Rd8
- 2.Qxd8#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...e4
- 2.Se6#
- 2.Qxe4#
- 1...Rd6!
- 1...Rd7+
- 1.Kf8?
- 1...Sxf4
- 2.Bb2#
- 1...exf4
- 2.Qe4#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Qxd8#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...e4
- 2.Se6#
- 2.Qxe4#
- 1...Rd6!
- 1...Sxf4
- 1.Kg8?
- 1...Sxf4
- 2.Bb2#
- 1...exf4
- 2.Qe4#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Qxd8#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...e4
- 2.Se6#
- 2.Qxe4#
- 1...Rd6!
- 1...Sxf4
- 1.Qxc6?
- 1...Rd7+
- 2.Qxd7#
- 1...Sxf4
- 2.Bb2#
- 1...Rd6
- 2.Qe4#
- 1...Rd8
- 2.Se6#
- 2.Qe4#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...c4
- 2.Qxc4#
- 1...e4
- 2.Se6#
- 1...exf4!
- 1...Rd7+
- 1.Qe7?
- 1...Sxf4
- 2.Bb2#
- 1...exf4
- 2.Qe4#
- 1...Rd7
- 2.Qxd7#
- 1...Rd8
- 2.Qxd8#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...e4
- 2.Se6#
- 2.Qxe4#
- 1...Rd6!
- 1...Sxf4
- 1.f5?
- 1...Rd7+
- 2.Qxd7#
- 1...Rd8
- 2.Qxd8#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...Sf4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...e4
- 2.Qxe4#
- 1...Rd6!
- 1...Rd7+
- 1.Kf6?
- Keys
- 1.Qe6!
- 1...Rd7+
- 2.Qxd7#
- 1...Sxf4
- 2.Bb2#
- 1...exf4
- 2.Qe4#
- 1...Rd6
- 2.Qc4#
- 1...Rd8
- 2.Sxc6#
- 2.Qc4#
- 1...Sc2
- 2.Rxd3#
- 1...Sg2
- 2.Rxd3#
- 1...Sf3
- 2.Rxd3#
- 1...Sc1
- 2.Bb2#
- 1...Sb2
- 2.Bxb2#
- 1...Sf2
- 2.Bb2#
- 1...Sb4
- 2.Bb2#
- 1...c4
- 2.Sxc6#
- 1...e4
- 2.Qxe4#
- 1...Rd7+
- 1.Qe6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(f);CHECK,OGATEB::QAR(H),XR(f)
- R(f);OGATEB::QAR(H),XR(f)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- S(b);N_GUARD,XP(D)::B(B)
- P(e);SBLOCK::S(E),XP(h)
- P(g);OGATE,XP(D)::QAR1(H)
- Tries
- Try
- K(G);P-FLIGHT
- Vars
- S(b);N_GUARD,XP(D)::B(B)
- P(g);OGATE,XP(D)::QAR1(H)
- R(f);OGATEB::QAR(H),XR(f)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);SBLOCK::S(E),XP(h)
- Refutation
- R(f);CHECK
- Try
- K(G);P-FLIGHT
- Vars
- R(f);CHECK,OGATEB::QAR(H),XR(f)
- S(b);N_GUARD,XP(D)::B(B)
- P(g);OGATE,XP(D)::QAR1(H)
- R(f);OGATEB::QAR(H),XR(f)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);SBLOCK::S(E),XP(h)
- Refutation
- R(f);
- Try
- K(G);P-FLIGHT
- Vars
- S(b);N_GUARD,XP(D)::B(B)
- P(g);OGATE,XP(D)::QAR1(H)
- R(f);OGATEB::QAR(H),XR(f)
- R(f);OGATEB,P_PINQ(H)::QAR(H),XR(f)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);SBLOCK::S(E),XP(h)
- Refutation
- R(f);
- Try
- K(G);S_FLIGHT
- Vars
- S(b);N_GUARD,XP(D)::B(B)
- P(g);OGATE,XP(D)::QAR1(H)
- R(f);OGATEB::QAR(H),XR(f)
- R(f);OGATEB,P_PINQ(H)::QAR(H),XR(f)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);SBLOCK::S(E),XP(h)
- Refutation
- R(f);
- Try
- Q(H);XP(h)
- Vars
- R(f);CHECK,OGATEB::QAR(H),XR(f)
- S(b);N_GUARD,XP(D)::B(B)
- R(f);OGATE::QAR1(H)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);OGATE::QAR1(H),XP(e)
- P(g);SBLOCK::S(F)
- Refutation
- P(g);XP(D)
- Try
- Q(H);
- Vars
- S(b);N_GUARD,XP(D)::B(B)
- P(g);OGATE,XP(D)::QAR1(H)
- R(f);OGATEB,P_PINQ(H)::QAR(H),XR(f)
- R(f);OGATEB::QAR(H),XR(f)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);SBLOCK::S(E),XP(h)
- Refutation
- R(f);
- Try
- P(D);
- Vars
- R(f);CHECK,OGATEB::QAR(H),XR(f)
- R(f);OGATEB::QAR(H),XR(f)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);SBLOCK::S(E),XP(h)
- P(g);OGATE::QAR1(H),XP(g)
- Refutation
- R(f);
- Try
- Actual
- Q(H);
- Vars
- R(f);CHECK,OGATEB::QAR(H),XR(f)
- S(b);N_GUARD,XP(D)::B(B)
- P(g);OGATE,XP(D)::QAR1(H)
- R(f);OGATE::QAR1(H)
- S(a);N_GUARD::R1(C),XS(b)
- S(b);N_GUARD::B(B)
- S(b);N_GUARD::B(B),XS(b)
- P(e);SBLOCK::S(E),XP(h)
- P(g);OGATE::QAR1(H),XP(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).