MESON Chess Problem Database
Problem Display
PID: 64548 (8/7B/3nQB2/4Nq2/4Nk1p/7R/8/6K1 w - - 0 1)
Rice, William Bayard
Good Companions (April), 1920
#2
7 + 4
| 3132 | The Good Companion Two-Mover | 1922 |
| 3310 | 2345 Chess Problems | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Sd3#
- 1...Qxh3
- 2.Bg5#
- 1...Qxe4
- 2.Qg4#
- 1...Qg4+
- 2.Qxg4#
- 1...Qxe6
- 2.Rf3#
- 1...Qg6+
- 2.Sxg6#
- 1...Qxh7
- 2.Sd3#
- 2.Qg4#
- 1...Qxe5
- 2.Bxe5#
- 1...Qg5+
- 2.Bxg5#
- 1...Qh5
- 2.Sd3#
- 1...Qxf6
- 2.Sd3#
- 2.Rf3#
- 1...Sc4
- 2.Qxf5#
- 1...Sxe4
- 2.Rf3#
- 2.Qxf5#
- 1...Sb5
- 2.Qxf5#
- 1...Sb7
- 2.Qxf5#
- 1...Sf7
- 2.Qxf5#
- 1...Sc8
- 2.Qxf5#
- 1...Se8
- 2.Qxf5#
- 1...Kxe4
- Tries
- 1.Kh2?
- 1...Kxe4
- 2.Sd3#
- 1...Qxe4
- 2.Qg4#
- 1...Qxe6
- 2.Rf3#
- 1...Qxh7
- 2.Sd3#
- 2.Qg4#
- 1...Qxe5
- 2.Bxe5#
- 1...Qxf6
- 2.Sd3#
- 2.Rf3#
- 1...Sxe4
- 2.Rf3#
- 2.Qxf5#
- 1...Qg4
- 2.Sd3#
- 2.Qxg4#
- 1...Qg6
- 2.Sd3#
- 2.Sxg6#
- 1...Qg5
- 2.Sd3#
- 2.Bxg5#
- 2.Rf3#
- 1...Qh5
- 2.Sd3#
- 1...Sc4
- 2.Qxf5#
- 1...Sb5
- 2.Qxf5#
- 1...Sb7
- 2.Qxf5#
- 1...Sf7
- 2.Qxf5#
- 1...Sc8
- 2.Qxf5#
- 1...Se8
- 2.Qxf5#
- 1...Qxh3+!
- 1...Kxe4
- 1.Bg5+?
- 1...Kxe4
- 2.Sc6#
- 2.Rxh4#
- 1...Qxg5+!
- 1...Kxe4
- 1.Bg7?
- 1...Qg4+
- 2.Qxg4#
- 1...Qg6+
- 2.Sxg6#
- 1...Kxe4
- 2.Sd3#
- 1...Qxh3
- 2.Bh6#
- 2.Qh6#
- 1...Qxe4
- 2.Bh6#
- 2.Qg4#
- 2.Qh6#
- 1...Qxe6
- 2.Rf3#
- 1...Qxh7
- 2.Sd3#
- 2.Qg4#
- 1...Qxe5
- 2.Bxe5#
- 1...Sxe4
- 2.Qxf5#
- 1...Qh5
- 2.Sd3#
- 1...Qf6
- 2.Sd3#
- 2.Rf3#
- 1...Qf7
- 2.Sd3#
- 2.Bh6#
- 2.Rf3#
- 2.Qg4#
- 2.Qh6#
- 1...Qf8
- 2.Sd3#
- 2.Sg6#
- 2.Rf3#
- 2.Qg4#
- 2.Qh6#
- 1...Sc4
- 2.Qxf5#
- 1...Sb5
- 2.Qxf5#
- 1...Sb7
- 2.Qxf5#
- 1...Sf7
- 2.Qxf5#
- 1...Sc8
- 2.Qxf5#
- 1...Se8
- 2.Qxf5#
- 1...Qg5+!
- 1...Qg4+
- 1.Bh8?
- 1...Qg4+
- 2.Qxg4#
- 1...Qg6+
- 2.Sxg6#
- 1...Kxe4
- 2.Sd3#
- 1...Qxh3
- 2.Qh6#
- 1...Qxe4
- 2.Qg4#
- 2.Qh6#
- 1...Qxe6
- 2.Rf3#
- 1...Qxh7
- 2.Sd3#
- 2.Qg4#
- 1...Qxe5
- 2.Bxe5#
- 1...Sxe4
- 2.Qxf5#
- 1...Qh5
- 2.Sd3#
- 1...Qf6
- 2.Sd3#
- 2.Rf3#
- 1...Qf7
- 2.Sd3#
- 2.Rf3#
- 2.Qg4#
- 2.Qh6#
- 1...Qf8
- 2.Sd3#
- 2.Sg6#
- 2.Rf3#
- 2.Qg4#
- 1...Sc4
- 2.Qxf5#
- 1...Sb5
- 2.Qxf5#
- 1...Sb7
- 2.Qxf5#
- 1...Sf7
- 2.Qxf5#
- 1...Sc8
- 2.Qxf5#
- 1...Se8
- 2.Qxf5#
- 1...Qg5+!
- 1...Qg4+
- 1.Bxf5?
- threat
- 2.Sd3#
- 2.Sg6#
- 2.Bg5#
- 2.Rf3#
- 1...Sxe4
- 2.Sd3#
- 2.Sg6#
- 2.Rf3#
- 1...Sf7
- 2.Sd3#
- 2.Sg6#
- 2.Rf3#
- 1...Sxf5!
- threat
- 1.Rg3?
- threat
- 2.Sd3#
- 1...Kxe4
- 2.Sd3#
- 1...Qxe4
- 2.Qg4#
- 1...Qxe5
- 2.Bxe5#
- 2.Qg4#
- 2.Qxe5#
- 1...Sxe4
- 2.Rf3#
- 1...hxg3!
- threat
- 1.Kh2?
- Keys
- 1.Bg6!
- 1...Qg4+
- 2.Qxg4#
- 1...Qxg6+
- 2.Sxg6#
- 1...Qg5+
- 2.Bxg5#
- 1...Kxe4
- 2.Sd3#
- 1...Qxh3
- 2.Bg5#
- 1...Qxe4
- 2.Qg4#
- 1...Qxe6
- 2.Rf3#
- 1...Qxe5
- 2.Bxe5#
- 1...Qxf6
- 2.Sd3#
- 2.Rf3#
- 1...Sxe4
- 2.Rf3#
- 2.Qxf5#
- 1...Qh5
- 2.Sd3#
- 1...Sc4
- 2.Qxf5#
- 1...Sb5
- 2.Qxf5#
- 1...Sb7
- 2.Qxf5#
- 1...Sf7
- 2.Qxf5#
- 1...Sc8
- 2.Qxf5#
- 1...Se8
- 2.Qxf5#
- 1...Qg4+
- 1.Bg6!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- K(a);P-FLIGHT,P_SPINQ(c),XS(C)::QAR(E)+S(D)
- Q(c);N_GUARD,XR(B)::B(F)
- Q(c);OGATE,XS(C)::QAR1(E)
- Q(c);CHECK,OGATE::QAR1(E),XQ(c)
- Q(c);XQ(E)::R1(B)
- Q(c);CHECK,N_GUARD::S(D),XQ(c)
- Q(c);OGATE,XS(D)::B(F),XQ(c)
- Q(c);CHECK,N_GUARD::B(F),XQ(c)
- Q(c);::S(D)
- S(d);N_GUARD::QAR1(E),XQ(c)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- K(a);P-FLIGHT,P_SPINQ(c),XS(C)::QAR(E)+S(D)
- Q(c);OGATE,XS(C)::QAR1(E)
- Q(c);XQ(E)::R1(B)
- Q(c);OGATE,XS(D)::B(F),XQ(c)
- Q(c);::S(D)
- S(d);N_GUARD::QAR1(E),XQ(c)
- Refutation
- Q(c);CHECK,XR(B)
- Try
- B(F);CHECK
- Refutation
- Q(c);CHECK,XB(F)
- Try
- B(F);
- Vars
- Q(c);CHECK,OGATE::QAR1(E),XQ(c)
- Q(c);CHECK,N_GUARD::S(D),XQ(c)
- K(a);P-FLIGHT,P_SPINQ(c),XS(C)::QAR(E)+S(D)
- Q(c);XQ(E)::R1(B)
- Q(c);OGATE,XS(D)::B(F),XQ(c)
- S(d);N_GUARD,XS(C)::QAR1(E),XQ(c)
- Q(c);::S(D)
- S(d);N_GUARD::QAR1(E),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- B(F);
- Vars
- Q(c);CHECK,OGATE::QAR1(E),XQ(c)
- Q(c);CHECK,N_GUARD::S(D),XQ(c)
- K(a);P-FLIGHT,P_SPINQ(c),XS(C)::QAR(E)+S(D)
- Q(c);N_GUARD,XR(B)::QAB(E)
- Q(c);XQ(E)::R1(B)
- Q(c);OGATE,XS(D)::B(F),XQ(c)
- S(d);N_GUARD,XS(C)::QAR1(E),XQ(c)
- Q(c);::S(D)
- S(d);N_GUARD::QAR1(E),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- B(G);XQ(c)
- Threat
- DUALS(4)
- Refutation
- S(d);XB(G)
- Try
- R(B);
- Threat
- S(D)
- Vars
- K(a);P-FLIGHT,P_SPINQ(c),XS(C)::QAR(E)+S(D)
- Q(c);OGATE,XS(C)::QAR1(E)
- S(d);SBLOCK,XS(C)::R1(B)
- Refutation
- P(b);XR(B)
- Try
- Actual
- B(G);
- Vars
- Q(c);CHECK,OGATE::QAR1(E),XQ(c)
- Q(c);CHECK,XB(G)::S(D),XQ(c)
- Q(c);CHECK,N_GUARD::B(F),XQ(c)
- K(a);P-FLIGHT,P_SPINQ(c),XS(C)::QAR(E)+S(D)
- Q(c);N_GUARD,XR(B)::B(F)
- Q(c);OGATE,XS(C)::QAR1(E)
- Q(c);XQ(E)::R1(B)
- Q(c);OGATE,XS(D)::B(F),XQ(c)
- Q(c);::S(D)
- S(d);N_GUARD::QAR1(E),XQ(c)
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).