MESON Chess Problem Database
Problem Display
PID: 101455 (8/8/8/pQ3R2/P1P1P3/3K3B/1p3qNR/b4kr1 w - - 0 1)
Stubbs, Arthur Goodwin
Good Companions, 1918
#2
9 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qf3+
- 2.Rxf3#
- 1...Qf4
- 2.Rxf4#
- 1...Qxf5
- 2.Qxf5#
- 1...Rh1
- 2.Rxh1#
- 1...Rxg2
- 2.Rh1#
- 1...b1Q+
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qf3+
- Tries
- 1.Se1+?
- 1...Rg2
- 2.Rh1#
- 1...Kxe1!
- 1...Rg2
- 1.Sh4+?
- 1...Rg2
- 2.Rh1#
- 1...Ke1!
- 1...Rg2
- 1.Rh1?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Qxf5
- 2.Qxf5#
- 1...Qf4
- 2.Rxf4#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Rxh1!
- 1...Qf3+
- 1.Rf3?
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf3+!
- 1...b1Q+
- 1.Rf4?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf4!
- 1...Qf3+
- 1.Rf6?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Qf4
- 2.Rxf4#
- 1...Qf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf6!
- 1...Qf3+
- 1.Rf7?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Qf4
- 2.Rxf4#
- 1...Qf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Qf6
- 2.Rxf6#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf7!
- 1...Qf3+
- 1.Rf8?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Qf4
- 2.Rxf4#
- 1...Qf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Qf6
- 2.Rxf6#
- 1...Qf7
- 2.Rxf7#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf8!
- 1...Qf3+
- 1.Qxb2?
- threat
- 2.Rxf2#
- 2.Qxa1#
- 2.Qc1#
- 2.Qb1#
- 2.Qe2#
- 2.Qxf2#
- 1...Qf3+
- 2.Rxf3#
- 1...Qxf5
- 2.Qe2#
- 1...Rxg2
- 2.Rh1#
- 2.Qxa1#
- 2.Qc1#
- 2.Qb1#
- 2.Qxf2#
- 1...Rh1
- 2.Rxh1#
- 2.Qxa1#
- 2.Qc1#
- 2.Qb1#
- 2.Qxf2#
- 1...Qf4
- 2.Rxf4#
- 2.Qe2#
- 1...Bxb2!
- threat
- 1.Qb3?
- threat
- 2.Qd1#
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Qf4
- 2.Rxf4#
- 1...b1R
- 2.Qxb1#
- 1...Qxf5!
- threat
- 1.Qb4?
- threat
- 2.Se3#
- 2.Qe1#
- 1...Qf3+
- 2.Se3#
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Rh1
- 2.Rxh1#
- 2.Qe1#
- 1...b1R
- 2.Se3#
- 2.Qxb1#
- 1...axb4!
- threat
- 1.Qb6?
- threat
- 2.Rxf2#
- 2.Qxf2#
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 2.Qxf2#
- 1...Rh1
- 2.Rxh1#
- 2.Qxf2#
- 1...Qf4
- 2.Rxf4#
- 1...Qxf5!
- threat
- 1.Qb7?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Qf4
- 2.Rxf4#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf5!
- 1...Qf3+
- 1.Qb8?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Qf4
- 2.Rxf4#
- 2.Qxf4#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf5!
- 1...Qf3+
- 1.e5?
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Rxg2
- 2.Rh1#
- 1...Qf4
- 2.Rxf4#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- 1...Qxf5+!
- 1...Qf3+
- 1.Se1+?
- Keys
- 1.c5!
- threat
- 2.Kc3#
- 1...Qf3+
- 2.Rxf3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1B+
- 2.Qxb1#
- 1...Qxf5
- 2.Ke3#
- 1...Rxg2
- 2.Rh1#
- 1...Qf4
- 2.Rxf4#
- 1...Rh1
- 2.Rxh1#
- 1...b1S
- 2.Qxb1#
- 1...b1R
- 2.Qxb1#
- threat
- 1.c5!
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- Q(e);OGATEB::R(I),XQ(e)
- Q(e);N_SPINQ(e),OGATE,P_PINP(G),XR(I)::QAR(H),XQ(e)
- R(c);OGATEB::R(B),XR(c)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);OGATE::QAR(H),XS(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- P(d);OGATE::QAR(H),XR(d)
- Tries
- Try
- S(A);CHECK
- Vars
- R(c);P_SPINR(c)::R(B)
- Refutation
- K(b);N_SPINQ(e),P-FLIGHT,XS(A)
- Try
- S(A);CHECK
- Vars
- R(c);P_SPINR(c)::R(B)
- Refutation
- K(b);N_SPINQ(e),P-FLIGHT
- Try
- R(B);P_PINR(c)
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- Q(e);N_SPINQ(e),OGATE,P_PINP(G),XR(I)::QAR(H),XQ(e)
- Q(e);OGATEB::R(I),XQ(e)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- R(c);N_SPINR(c),XR(B)
- Try
- R(I);
- Vars
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);CHECK,N_SPINQ(e),XR(I)
- Try
- R(I);
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);N_SPINQ(e),XR(I)
- Try
- R(I);
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- Q(e);OGATEB::R(I),XQ(e)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);N_SPINQ(e),XR(I)
- Try
- R(I);
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- Q(e);OGATEB::R(I),XQ(e)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);N_SPINQ(e),XR(I)
- Try
- R(I);
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- Q(e);OGATEB::R(I),XQ(e)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);N_SPINQ(e),XR(I)
- Try
- Q(H);XP(d)
- Threat
- DUALS(6)
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- Q(e);N_SPINQ(e),P_PINP(G),XR(I)::QAB1(H)
- Refutation
- B(a);XQ(H)
- Try
- Q(H);
- Threat
- QAR2(H)
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- Q(e);OGATEB::R(I),XQ(e)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);N_SPINQ(e),P_PINP(G),XR(I)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- Refutation
- P(f);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- Q(e);OGATEB::R(I),XQ(e)
- Refutation
- Q(e);N_SPINQ(e),P_PINP(G),XR(I)
- Try
- Q(H);
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- Q(e);OGATEB::R(I),XQ(e)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);N_SPINQ(e),P_PINP(G),XR(I)
- Try
- Q(H);
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);N_SPINQ(e),P_PINP(G),XR(I)
- Try
- P(G);
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- Q(e);OGATEB::R(I),XQ(e)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
- Refutation
- Q(e);CHECK,N_SPINQ(e),XR(I)
- Try
- Actual
- P(F);
- Threat
- QAB(H)+K(C)
- Vars
- Q(e);CHECK,OGATEB::R(I),XQ(e)
- P(d);CHECK,OGATE::QAR(H),XQ(d)
- P(d);CHECK,OGATE::QAR(H),XB(d)
- Q(e);N_SPINQ(e),P_PINP(G),XR(I)::QAB(H)+K(C)
- R(c);OGATEB,P_SPINR(c),XS(A)::R(B)
- Q(e);OGATEB::R(I),XQ(e)
- R(c);OGATEB::R(B),XR(c)
- P(d);OGATE::QAR(H),XS(d)
- P(d);OGATE::QAR(H),XR(d)
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).