MESON Chess Problem Database
Problem Display
PID: 267735 (8/2Pp3P/NPrPbPB1/pP1kBn2/6p1/1PQ2Pp1/3KN1n1/4R3 w - - 0 1)
Hallam, LC
The Referee, 1928
(First published on Sun Apr 15 1928)
#2
15 + 9
| 15239 | Valois Notebooks | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rxc3
- 2.Sxc3#
- 1...Rc4
- 2.bxc4#
- 1...Rc5
- 2.Qxc5#
- 1...Rxb6
- 2.Qc5#
- 1...Rxd6
- 2.Qc5#
- 1...Rxc7
- 2.Sxc7#
- 1...Bf7
- 2.Bxf7#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sxe1
- 2.Sf4#
- 1...Sge3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sfe3
- 2.Be4#
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sfh4
- 2.Be4#
- 2.Qd4#
- 1...Sxd6
- 2.Qd4#
- 1...Sh6
- 2.Be4#
- 2.Qd4#
- 1...Se7
- 2.Be4#
- 2.Qd4#
- 1...Sg7
- 2.Be4#
- 2.Qd4#
- 1...a4
- 2.Sb4#
- 1...Rxc3
- Tries
- 1.Bxf5?
- threat
- 2.Be4#
- 2.Qd4#
- 1...Rxc3
- 2.Sxc3#
- 1...gxf3
- 2.Qd4#
- 1...Rc4
- 2.bxc4#
- 1...Bf7
- 2.Qd4#
- 1...Bg8
- 2.Qd4#
- 2.hxg8Q#
- 2.hxg8B#
- 1...Bxf5!
- threat
- 1.Be8?
- 1...Rxc3
- 2.Sxc3#
- 1...Rxb6
- 2.Qc5#
- 1...Rxd6
- 2.Qc5#
- 1...Rxc7
- 2.Sxc7#
- 1...Sxe1
- 2.Sf4#
- 1...Sxd6
- 2.Qd4#
- 1...Bf7
- 2.Bxf7#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd4
- 2.Qxd4#
- 1...Rc4
- 2.bxc4#
- 1...Rc5
- 2.Qxc5#
- 1...Sge3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sfe3
- 2.Qd4#
- 1...Sfh4
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...a4
- 2.Sb4#
- 1...gxf3!
- 1...Rxc3
- 1.Qd3+?
- 1...Sd4
- 2.Qe4#
- 2.Qxd4#
- 1...Kxe5!
- 1...Sd4
- 1.Qxc6+?
- 1...dxc6
- 2.Sc3#
- 1...Kxe5!
- 1...dxc6
- 1.bxc6?
- threat
- 2.Qc5#
- 1...Bf7
- 2.Bxf7#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...gxf3!
- threat
- 1.f7?
- 1...Rxc3
- 2.Sxc3#
- 1...Rxb6
- 2.Qc5#
- 1...Rxd6
- 2.Qc5#
- 1...Rxc7
- 2.Sxc7#
- 1...Bxf7
- 2.Bxf7#
- 1...Sxe1
- 2.Sf4#
- 1...Sxd6
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Rc4
- 2.bxc4#
- 1...Rc5
- 2.Qxc5#
- 1...Sge3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sfe3
- 2.Be4#
- 2.Qd4#
- 1...Sfh4
- 2.Be4#
- 2.Qd4#
- 1...Sh6
- 2.Be4#
- 2.Qd4#
- 1...Se7
- 2.Be4#
- 2.Qd4#
- 1...Sg7
- 2.Be4#
- 2.Qd4#
- 1...a4
- 2.Sb4#
- 1...gxf3!
- 1...Rxc3
- 1.h8Q?
- 1...Rxc3
- 2.Sxc3#
- 1...Rxb6
- 2.Qc5#
- 1...Rxd6
- 2.Qc5#
- 1...Rxc7
- 2.Sxc7#
- 1...Sxe1
- 2.Sf4#
- 1...Sxd6
- 2.Qd4#
- 1...Bf7
- 2.Bxf7#
- 1...Bg8
- 2.Qxg8#
- 1...Sd4
- 2.Qxd4#
- 1...Rc4
- 2.bxc4#
- 1...Rc5
- 2.Qxc5#
- 1...Sge3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sfe3
- 2.Be4#
- 2.Qd4#
- 1...Sfh4
- 2.Be4#
- 2.Qd4#
- 1...Sh6
- 2.Be4#
- 2.Qd4#
- 1...Se7
- 2.Be4#
- 2.Qd4#
- 1...Sg7
- 2.Be4#
- 2.Qd4#
- 1...a4
- 2.Sb4#
- 1...gxf3!
- 1...Rxc3
- 1.Bxf5?
- Keys
- 1.Bh5!
- 1...Rxc3
- 2.Sxc3#
- 1...Rxb6
- 2.Qc5#
- 1...Rxd6
- 2.Qc5#
- 1...Rxc7
- 2.Sxc7#
- 1...Sxe1
- 2.Sf4#
- 1...Sxd6
- 2.Qd4#
- 1...gxf3
- 2.Bxf3#
- 1...Bf7
- 2.Bxf7#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd4
- 2.Qxd4#
- 1...Rc4
- 2.bxc4#
- 1...Rc5
- 2.Qxc5#
- 1...Sge3
- 2.Sf4#
- 1...Sf4
- 2.Sxf4#
- 1...Sgh4
- 2.Sf4#
- 1...Sfe3
- 2.Qd4#
- 1...Sfh4
- 2.Qd4#
- 1...Sh6
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sg7
- 2.Qd4#
- 1...a4
- 2.Sb4#
- 1...Rxc3
- 1.Bh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- R(g);XQ(E)::S(C),XR(g)
- R(g);OGATE::P(D),XR(g)
- R(g);N_GUARD::QAR1(E),XR(g)
- R(g);N_GUARD,XP(J)::QAR1(E)
- R(g);N_GUARD,XP(K)::QAR1(E)
- R(g);XP(N)::S(I),XR(g)
- B(h);OGATEB::B(M),XB(h)
- B(h);OGATE::PXB(h)=Q
- S(a);N_GUARD,XR(A)::S(C)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAR1(E),XS(f)
- S(f);N_GUARD,XP(K)::QAR1(E)
- P(d);N_GUARD::S(I)
- Tries
- Try
- B(M);XS(f)
- Threat
- DUALS(2)
- Vars
- R(g);XQ(E)::S(C),XR(g)
- P(c);XP(F)::QAR1(E)
- R(g);OGATE::P(D),XR(g)
- B(h);::QAR1(E)
- Refutation
- B(h);XB(M)
- Try
- B(M);
- Vars
- R(g);XQ(E)::S(C),XR(g)
- R(g);N_GUARD,XP(J)::QAR1(E)
- R(g);N_GUARD,XP(K)::QAR1(E)
- R(g);XP(N)::S(I),XR(g)
- S(a);N_GUARD,XR(A)::S(C)
- S(f);N_GUARD,XP(K)::QAR1(E)
- B(h);OGATEB::B(M),XB(h)
- B(h);OGATE::PXB(h)=Q
- S(f);N_GUARD::QAR1(E),XS(f)
- R(g);OGATE::P(D),XR(g)
- R(g);N_GUARD::QAR1(E),XR(g)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAR1(E)
- P(d);N_GUARD::S(I)
- Refutation
- P(c);XP(F)
- Try
- Q(E);CHECK
- Refutation
- K(e);P-FLIGHT,XB(H)
- Try
- Q(E);CHECK,XR(g)
- Vars
- P(i);XQ(E)::S(C)
- Refutation
- K(e);P-FLIGHT,XB(H)
- Try
- P(G);XR(g)
- Threat
- QAR1(E)
- Vars
- B(h);OGATEB::B(M),XB(h)
- B(h);OGATE::PXB(h)=Q
- Refutation
- P(c);XP(F)
- Try
- P(L);
- Vars
- R(g);XQ(E)::S(C),XR(g)
- R(g);N_GUARD,XP(J)::QAR1(E)
- R(g);N_GUARD,XP(K)::QAR1(E)
- R(g);XP(N)::S(I),XR(g)
- B(h);OGATE,XP(L)::B(M),XB(h)
- S(a);N_GUARD,XR(A)::S(C)
- S(f);N_GUARD,XP(K)::QAR1(E)
- S(f);N_GUARD::QAR1(E),XS(f)
- R(g);OGATE::P(D),XR(g)
- R(g);N_GUARD::QAR1(E),XR(g)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- P(d);N_GUARD::S(I)
- Refutation
- P(c);XP(F)
- Try
- P(O);
- Vars
- R(g);XQ(E)::S(C),XR(g)
- R(g);N_GUARD,XP(J)::QAR1(E)
- R(g);N_GUARD,XP(K)::QAR1(E)
- R(g);XP(N)::S(I),XR(g)
- S(a);N_GUARD,XR(A)::S(C)
- S(f);N_GUARD,XP(K)::QAR1(E)
- B(h);OGATEB::B(M),XB(h)
- B(h);OGATEB::QAB(O),XB(h)
- S(f);N_GUARD::QAR1(E),XS(f)
- R(g);OGATE::P(D),XR(g)
- R(g);N_GUARD::QAR1(E),XR(g)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- P(d);N_GUARD::S(I)
- Refutation
- P(c);XP(F)
- Try
- Actual
- B(M);
- Vars
- R(g);XQ(E)::S(C),XR(g)
- R(g);N_GUARD,XP(J)::QAR1(E)
- R(g);N_GUARD,XP(K)::QAR1(E)
- R(g);XP(N)::S(I),XR(g)
- S(a);N_GUARD,XR(A)::S(C)
- S(f);N_GUARD,XP(K)::QAR1(E)
- P(c);OGATE,XP(F)::B(M),XP(c)
- B(h);OGATEB::B(M),XB(h)
- B(h);OGATE::PXB(h)=Q
- S(f);N_GUARD::QAR1(E),XS(f)
- R(g);OGATE::P(D),XR(g)
- R(g);N_GUARD::QAR1(E),XR(g)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(f);N_GUARD::QAR1(E)
- P(d);N_GUARD::S(I)
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).