MESON Chess Problem Database
Problem Display
PID: 150354 (k3N1R1/1nP1r3/1P1P4/5b1R/p2pB1q1/K4p2/Q4p2/8 w - - 0 1)
Schofield, FT
The Referee, 1925
(First published on Sun Nov 1 1925)
#2
9 + 9
| 15239 | Valois Notebooks | 2014 |
SOLUTION
- SOUND
- Sets
- 1...Re6
- 2.c8Q#
- 2.c8R#
- 1...Rxc7
- 2.Sxc7#
- 1...Rd7
- 2.c8Q#
- 2.c8R#
- 1...Be6
- 2.Ra5#
- 1...Bg6
- 2.Ra5#
- 1...Bd7
- 2.Ra5#
- 1...Bh7
- 2.Ra5#
- 1...Bc8
- 2.Ra5#
- 1...Re6
- Tries
- 1.Sg7+?
- 1...Bc8
- 2.Ra5#
- 1...Re8!
- 1...Bc8
- 1.Rxf5?
- threat
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qxe4
- 2.c8Q#
- 2.c8R#
- 1...Qxg8
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Rxe4
- 2.c8Q#
- 2.c8R#
- 1...Rxc7
- 2.Sxc7#
- 1...Rxe8
- 2.Ra5#
- 2.Rxe8#
- 1...f1Q
- 2.c8Q#
- 2.c8R#
- 1...f1S
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...f1B
- 2.c8Q#
- 2.c8R#
- 1...f1R
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qh3
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qh5
- 2.c8Q#
- 2.c8R#
- 1...Qg1
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qg2
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qg3
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qf4
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qh4
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qg5
- 2.c8Q#
- 2.c8R#
- 1...Qg6
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qg7
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Re5
- 2.c8Q#
- 2.c8R#
- 1...Re6
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Rd7
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Rf7
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Rg7
- 2.Sxg7#
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Rh7
- 2.Sg7#
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...d3
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Qxf5!
- threat
- 1.Sg7+?
- Keys
- 1.Qe6!
- threat
- 2.c8Q#
- 2.c8R#
- 1...Qxh5
- 2.c8Q#
- 2.c8R#
- 1...Qxe4
- 2.c8Q#
- 2.c8R#
- 1...Qxg8
- 2.c8Q#
- 2.c8R#
- 1...Rxe6
- 2.c8Q#
- 2.c8R#
- 1...Rxc7
- 2.Sxc7#
- 1...Rxe8
- 2.Rxe8#
- 1...Bxe4
- 2.c8Q#
- 2.c8R#
- 1...Bxe6
- 2.Ra5#
- 1...f1Q
- 2.c8Q#
- 2.c8R#
- 1...f1S
- 2.c8Q#
- 2.c8R#
- 1...f1B
- 2.c8Q#
- 2.c8R#
- 1...f1R
- 2.c8Q#
- 2.c8R#
- 1...Qh3
- 2.c8Q#
- 2.c8R#
- 1...Qg1
- 2.c8Q#
- 2.c8R#
- 1...Qg2
- 2.c8Q#
- 2.c8R#
- 1...Qg3
- 2.c8Q#
- 2.c8R#
- 1...Qf4
- 2.c8Q#
- 2.c8R#
- 1...Qh4
- 2.c8Q#
- 2.c8R#
- 1...Qg5
- 2.c8Q#
- 2.c8R#
- 1...Qg6
- 2.c8Q#
- 2.c8R#
- 1...Qg7
- 2.c8Q#
- 2.c8R#
- 1...Rd7
- 2.c8Q#
- 2.c8R#
- 1...Rf7
- 2.c8Q#
- 2.c8R#
- 1...Rg7
- 2.Sxg7#
- 2.c8Q#
- 2.c8R#
- 1...Rh7
- 2.Sg7#
- 2.c8Q#
- 2.c8R#
- 1...Bg6
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...Bh7
- 2.Ra5#
- 2.c8Q#
- 2.c8R#
- 1...d3
- 2.c8Q#
- 2.c8R#
- threat
- 1.Qe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- R(h);S_CUTB(f)::P=Q
- R(h);XP(G)::R(I)+S(H),DCHECK,XR(h)
- B(f);OGATE::R(D)
- Tries
- Try
- S(H);CHECK
- Vars
- B(f);OGATE,P_SPINB(f)::R(D)
- Refutation
- R(h);P_SPINR(h)
- Try
- R(D);XB(f)
- Threat
- DUALS(3)
- Vars
- Q(e);N_SPINS(g),XB(C)::P=Q
- R(h);N_SPINS(g),XB(C)::P=Q
- R(h);XP(G)::R(I)+S(H),DCHECK,XR(h)
- P(a);::P=Q
- Q(e);::P=Q
- R(h);::P=Q
- Refutation
- Q(e);XR(D)
- Try
- Actual
- Q(A);
- Threat
- P=Q
- Vars
- Q(e);XR(D)::P=Q
- Q(e);N_SPINS(g),XB(C)::P=Q
- Q(e);XR(I)::P=Q
- R(h);XQ(A)::P=Q
- R(h);XP(G)::R(I)+S(H),DCHECK,XR(h)
- R(h);OGATE,P_SPINR(h),XS(H)::R(I),XR(h)
- B(f);N_SPINS(g),XB(C)::P=Q
- B(f);OGATE,XQ(A)::R(D)
- P(a);::P=Q
- Q(e);::P=Q
- R(h);::P=Q
- P(d);::P=Q
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).