MESON Chess Problem Database
Problem Display
PID: 268633 (1n6/R4K2/3k3N/6p1/2RB3n/bp1N4/1q1Q4/7B w - - 0 1)
Gurr, John
Sunday Referee, 1929
(First published on Sun Dec 29 1929)
#2
8 + 7
| 15239 | Valois Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Qa1
- 2.Qh2#
- 1...Qc1
- 2.Be5#
- 1...Qc3
- 2.Qh2#
- 1...Qxd4
- 2.Rxd4#
- 1...Qb1
- 2.Be5#
- 2.Qh2#
- 1...Qa2
- 2.Be5#
- 1...Qc2
- 2.Be5#
- 1...Qxd2
- 2.Be5#
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Bxc5#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 1...Sa6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Sd7
- 2.Rc6#
- 1...g4
- 2.Qf4#
- 1...Qa1
- Tries
- 1.Sxb2?
- threat
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Qh2#
- 1...Bxb2
- 2.Bxb2#
- 2.Bc3#
- 2.Qb4#
- 2.Qh2#
- 1...Sg2
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Bb4
- 2.Bc3#
- 2.Qxb4#
- 2.Qh2#
- 1...Bc5
- 2.Qh2#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 1...Sc6
- 2.Rxc6#
- 1...Sd7
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Rc6#
- 1...g4
- 2.Bc3#
- 2.Bf6#
- 2.Bg7#
- 2.Bh8#
- 2.Qf4#
- 1...Sf3!
- threat
- 1.Bf3?
- 1...Qxd4
- 2.Rxd4#
- 1...Qxd2
- 2.Be5#
- 1...Qc1
- 2.Be5#
- 1...Qa1
- 2.Qh2#
- 1...Qc3
- 2.Qh2#
- 1...Qb1
- 2.Be5#
- 2.Qh2#
- 1...Qa2
- 2.Be5#
- 1...Qc2
- 2.Be5#
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Bxc5#
- 1...Sg2
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 1...Sa6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Sd7
- 2.Rc6#
- 1...g4
- 2.Qf4#
- 1...Sxf3!
- 1...Qxd4
- 1.Bxb2?
- threat
- 2.Sc1#
- 2.Se1#
- 2.Sf2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Bxa3#
- 2.Be5#
- 2.Rd4#
- 2.Qh2#
- 1...Bxb2
- 2.Qb4#
- 1...Sg2
- 2.Sc1#
- 2.Se1#
- 2.Sf2#
- 2.Sb4#
- 2.Sf4#
- 2.Se5#
- 1...Bb4
- 2.Sxb4#
- 2.Be5#
- 2.Rd4#
- 2.Qxb4#
- 2.Qh2#
- 1...Bc5
- 2.Sxc5#
- 2.Be5#
- 2.Qh2#
- 1...Sf5
- 2.Sxf5#
- 2.Bxa3#
- 2.Be5#
- 1...Sg6
- 2.Sc1#
- 2.Se1#
- 2.Sf2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Sf5#
- 2.Bxa3#
- 2.Rd4#
- 1...Sa6
- 2.Sc1#
- 2.Se1#
- 2.Sf2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Be5#
- 2.Rd4#
- 2.Rc6#
- 2.Qh2#
- 1...Sc6
- 2.Rxc6#
- 1...Sd7
- 2.Sc1#
- 2.Se1#
- 2.Sf2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Rd4#
- 2.Rc6#
- 1...g4
- 2.Sc1#
- 2.Se1#
- 2.Sf2#
- 2.Sb4#
- 2.Sf4#
- 2.Sc5#
- 2.Se5#
- 2.Bxa3#
- 2.Be5#
- 2.Rd4#
- 2.Qf4#
- 1...Sf3!
- threat
- 1.Rd7+?
- 1...Sxd7
- 2.Rc6#
- 1...Kxd7!
- 1...Sxd7
- 1.Qe3?
- threat
- 2.Qg3#
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...Qxd4
- 2.Rxd4#
- 2.Qxd4#
- 2.Qe6#
- 2.Qe7#
- 1...Qg2
- 2.Qe5#
- 2.Qe6#
- 1...Sg2
- 2.Qe5#
- 2.Qe6#
- 1...Sf3
- 2.Qe6#
- 1...Qc1
- 2.Be5#
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...Qd2
- 2.Be5#
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...Qe2
- 2.Be5#
- 1...Qh2
- 2.Qe6#
- 2.Qe7#
- 1...Sf5
- 2.Sxf5#
- 2.Qe5#
- 2.Qe6#
- 1...Sg6
- 2.Sf5#
- 2.Qe6#
- 1...Sc6
- 2.Rxc6#
- 2.Qe6#
- 1...Sd7
- 2.Rc6#
- 2.Qe6#
- 2.Qe7#
- 1...Qf2+!
- threat
- 1.Qa5?
- threat
- 2.Qc7#
- 2.Qd5#
- 2.Qe5#
- 1...Qxd4
- 2.Rxd4#
- 2.Qc7#
- 1...Qe2
- 2.Qc7#
- 2.Qxa3#
- 2.Qd5#
- 1...Qg2
- 2.Be5#
- 2.Qe5#
- 1...Qh2
- 2.Qc7#
- 2.Qxa3#
- 2.Qd5#
- 1...Bc5
- 2.Bxc5#
- 2.Qc7#
- 2.Qxc5#
- 1...Sg2
- 2.Sf5#
- 2.Qe5#
- 1...Sf3
- 2.Sf5#
- 1...Sg6
- 2.Sf5#
- 2.Qc7#
- 2.Qd5#
- 1...Sa6
- 2.Rc6#
- 2.Qb6#
- 2.Qd8#
- 2.Qd5#
- 2.Qe5#
- 2.Qxa6#
- 1...Sc6
- 2.Rxc6#
- 2.Qc7#
- 2.Qd5#
- 1...Sd7
- 2.Rc6#
- 2.Qc7#
- 2.Qd5#
- 1...Qf2+!
- threat
- 1.Qe2?
- threat
- 2.Qe5#
- 2.Qe6#
- 2.Qe7#
- 1...Qxd4
- 2.Rxd4#
- 2.Qe6#
- 2.Qe7#
- 1...Sg2
- 2.Qe5#
- 2.Qe6#
- 1...Sf3
- 2.Qe6#
- 1...Sf5
- 2.Sxf5#
- 2.Qe5#
- 2.Qe6#
- 1...Sg6
- 2.Sf5#
- 2.Qe6#
- 1...Sc6
- 2.Rxc6#
- 2.Qe6#
- 1...Sd7
- 2.Rc6#
- 2.Qe6#
- 2.Qe7#
- 1...Qxe2!
- threat
- 1.Sxb2?
- Keys
- 1.Be4!
- 1...Qxd4
- 2.Rxd4#
- 1...Qxd2
- 2.Be5#
- 1...Qc1
- 2.Be5#
- 1...Qa1
- 2.Qh2#
- 1...Qc3
- 2.Qh2#
- 1...Qb1
- 2.Be5#
- 2.Qh2#
- 1...Qa2
- 2.Be5#
- 1...Qc2
- 2.Be5#
- 1...Bb4
- 2.Qxb4#
- 1...Bc5
- 2.Bxc5#
- 1...Sg2
- 2.Sf5#
- 1...Sf3
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sg6
- 2.Sf5#
- 1...Sa6
- 2.Rc6#
- 1...Sc6
- 2.Rxc6#
- 1...Sd7
- 2.Rc6#
- 1...g4
- 2.Qf4#
- 1...Qxd4
- 1.Be4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- Q(a);N_GUARD::QAB(B)
- Q(a);N_GUARD::B(E)
- Q(a);OGATE,XB(E)::R(D),XQ(a)
- Q(a);N_GUARD,XQ(B)::B(E)
- B(b);N_GUARD::QAB(B),XB(b)
- B(b);N_GUARD::B(E),XB(b)
- S(d);N_GUARD::S(F),XS(d)
- S(d);N_GUARD::S(F)
- S(g);N_GUARD::R1(D)
- S(g);N_GUARD::R1(D),XS(g)
- P(e);N_GUARD::QAB(B)
- Tries
- Try
- S(C);XQ(a)
- Threat
- DUALS(5)
- Vars
- B(b);::QAB(B)
- S(d);N_GUARD::S(F),XS(d)
- S(g);N_GUARD::R1(D),XS(g)
- Refutation
- S(d);
- Try
- B(A);
- Vars
- Q(a);OGATE,XB(E)::R(D),XQ(a)
- Q(a);N_GUARD,XQ(B)::B(E)
- Q(a);N_GUARD::B(E)
- Q(a);N_GUARD::QAB(B)
- B(b);N_GUARD::QAB(B),XB(b)
- B(b);N_GUARD::B(E),XB(b)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(g);N_GUARD::R1(D)
- S(g);N_GUARD::R1(D),XS(g)
- P(e);N_GUARD::QAB(B)
- Refutation
- S(d);XB(A)
- Try
- B(E);XQ(a)
- Threat
- DUALS(11)
- Vars
- B(b);N_GUARD,XB(E)::QAB(B)
- S(g);N_GUARD::R1(D),XS(g)
- Refutation
- S(d);
- Try
- R(G);CHECK
- Vars
- S(g);SBLOCK,XR(G)::R1(D)
- Refutation
- K(f);P-FLIGHT,XR(G)
- Try
- Q(B);
- Threat
- DUALS(4)
- Vars
- S(d);::QAR1(B)
- Q(a);N_GUARD::B(E)
- Refutation
- Q(a);CHECK
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(d);N_GUARD::S(F)
- Refutation
- Q(a);CHECK
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(d);::QAR1(B)
- Refutation
- Q(a);XQ(B)
- Try
- Actual
- B(A);
- Vars
- Q(a);OGATE,XB(E)::R(D),XQ(a)
- Q(a);N_GUARD,XQ(B)::B(E)
- Q(a);N_GUARD::B(E)
- Q(a);N_GUARD::QAB(B)
- B(b);N_GUARD::QAB(B),XB(b)
- B(b);N_GUARD::B(E),XB(b)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(g);N_GUARD::R1(D)
- S(g);N_GUARD::R1(D),XS(g)
- P(e);N_GUARD::QAB(B)
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).