MESON Chess Problem Database
Problem Display
PID: 268629 (8/3ppN2/1R1p4/8/1K1k2NR/7p/3pP1np/1B5Q w - - 0 1)
Constable, BC
Sunday Referee, 1929
(First published on Sun Dec 1 1929)
#2
8 + 8
| 15239 | Valois Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Qe4#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 2.e3#
- 1...Sxh4
- 2.Qe4#
- 2.e3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Se1
- Tries
- 1.Sf2+?
- 1...Kd5
- 2.Ba2#
- 1...Sf4
- 2.Qe4#
- 1...Sxh4
- 2.Qe4#
- 1...Ke3!
- 1...Kd5
- 1.Sxh2+?
- 1...Kd5
- 2.Ba2#
- 1...Sf4
- 2.Qe4#
- 1...Sxh4
- 2.Qe4#
- 1...Ke3!
- 1...Kd5
- 1.Se3+?
- 1...Sf4
- 2.Sc2#
- 2.Sf5#
- 2.Qe4#
- 1...Sxh4
- 2.Sc2#
- 2.Qe4#
- 1...Kxe3!
- 1...Sf4
- 1.Sge5+?
- 1...Kd5
- 2.Ba2#
- 1...Sf4
- 2.Qe4#
- 1...Sxh4
- 2.Qe4#
- 1...Ke3!
- 1...Kd5
- 1.Sf6+?
- 1...Sf4
- 2.Qe4#
- 1...Sxh4
- 2.Qe4#
- 1...Ke3!
- 1...Sf4
- 1.Sgh6+?
- 1...Kd5
- 2.Ba2#
- 1...Sf4
- 2.Sf5#
- 2.Qe4#
- 1...Sxh4
- 2.Qe4#
- 1...Ke3!
- 1...Kd5
- 1.Sg5?
- 1...Sxh4
- 2.Qe4#
- 2.e3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Se1
- 2.Qe4#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 2.e3#
- 1...d5
- 2.Sf3#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kd5!
- 1...Sxh4
- 1.Sfh6?
- 1...Sxh4
- 2.Qe4#
- 2.e3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Se1
- 2.Sf5#
- 2.Qe4#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Sf5#
- 2.Qe4#
- 2.e3#
- 1...d5
- 2.Sf5#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kd5!
- 1...Sxh4
- 1.Bc2?
- 1...Sxh4
- 2.Qe4#
- 2.e3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...d5
- 2.Qa1#
- 1...Se1
- 2.Qe4#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 2.e3#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kd5!
- 1...Sxh4
- 1.Bg6?
- 1...Sxh4
- 2.Qe4#
- 2.e3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Se1
- 2.Qe4#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 2.e3#
- 1...d5
- 2.Qa1#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kd5!
- 1...Sxh4
- 1.Bh7?
- 1...Sxh4
- 2.Qe4#
- 2.e3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Se1
- 2.Qe4#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 2.e3#
- 1...d5
- 2.Qa1#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kd5!
- 1...Sxh4
- 1.Rh5?
- 1...e5
- 2.Rxd6#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Se1
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 2.e3#
- 1...Sh4
- 2.Rd5#
- 2.Qe4#
- 2.Qd5#
- 2.e3#
- 1...e6
- 2.Rxd6#
- 1...d5!
- 1...e5
- 1.Qxg2?
- threat
- 2.Qe4#
- 2.e3#
- 1...d1S
- 2.Qe4#
- 1...h1Q
- 2.e3#
- 1...h1B
- 2.e3#
- 1...d5
- 2.Qf2#
- 2.e3#
- 1...hxg2!
- threat
- 1.e3+?
- 1...Sxe3
- 2.Qe4#
- 1...Kd5!
- 1...Sxe3
- 1.Sf2+?
- Keys
- 1.Bf5!
- 1...Kd5
- 2.Se3#
- 1...Sxh4
- 2.Qe4#
- 2.e3#
- 1...d1Q
- 2.Qxd1#
- 1...d1S
- 2.Qxd1#
- 1...d1B
- 2.Qxd1#
- 1...d1R
- 2.Qxd1#
- 1...Se1
- 2.Qe4#
- 2.e3#
- 1...Se3
- 2.Qe4#
- 1...Sf4
- 2.Qe4#
- 2.e3#
- 1...d5
- 2.Qa1#
- 1...e5
- 2.Rxd6#
- 1...e6
- 2.Rxd6#
- 1...Kd5
- 1.Bf5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(b);OGATE::QAR1(B)
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- P(h);N_GUARD::R(G),XP(f)
- Tries
- Try
- S(E);CHECK
- Vars
- K(e);N_GUARD,P-FLIGHT,P_SPINS(b)::B(A)
- S(b);OGATE,P_SPINS(b)::QAR1(B)
- S(b);OGATE,XR(F)::QAR1(B)
- Refutation
- K(e);S_FLIGHT
- Try
- S(E);CHECK,XP(c)
- Vars
- K(e);N_GUARD,P-FLIGHT,P_SPINS(b)::B(A)
- S(b);OGATE,P_SPINS(b)::QAR1(B)
- S(b);OGATE,XR(F)::QAR1(B)
- Refutation
- K(e);S_FLIGHT
- Try
- S(E);CHECK
- Refutation
- K(e);S_FLIGHT,XS(E)
- Try
- S(E);CHECK
- Vars
- K(e);N_GUARD,P-FLIGHT,P_SPINS(b)::B(A)
- S(b);OGATE,P_SPINS(b)::QAR1(B)
- S(b);OGATE,XR(F)::QAR1(B)
- Refutation
- K(e);S_FLIGHT
- Try
- S(E);CHECK
- Vars
- S(b);OGATE,P_SPINS(b)::QAR1(B)
- S(b);OGATE,XR(F)::QAR1(B)
- Refutation
- K(e);S_FLIGHT
- Try
- S(E);CHECK
- Vars
- K(e);N_GUARD,P-FLIGHT,P_SPINS(b)::B(A)
- S(b);OGATE,XR(F)::QAR1(B)
- Refutation
- K(e);S_FLIGHT
- Try
- S(H);
- Vars
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- S(b);OGATE::QAR1(B)
- P(f);SBLOCK::S(H)
- P(h);N_GUARD::R(G),XP(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(b)
- Try
- S(H);
- Vars
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- S(b);OGATE::QAR1(B)
- P(f);SBLOCK::S(H)
- P(h);N_GUARD::R(G),XP(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(b)
- Try
- B(A);
- Vars
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- P(f);SBLOCK::QAB(B)
- S(b);OGATE::QAR1(B)
- P(h);N_GUARD::R(G),XP(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(b)
- Try
- B(A);
- Vars
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- S(b);OGATE::QAR1(B)
- P(f);SBLOCK::QAB(B)
- P(h);N_GUARD::R(G),XP(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(b)
- Try
- B(A);
- Vars
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- S(b);OGATE::QAR1(B)
- P(f);SBLOCK::QAB(B)
- P(h);N_GUARD::R(G),XP(f)
- Refutation
- K(e);P-FLIGHT,P_SPINS(b)
- Try
- R(F);
- Vars
- P(h);N_GUARD::R(G),XP(f)
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- S(b);OGATE::QAR1(B)
- Refutation
- P(f);
- Try
- Q(B);XS(b)
- Threat
- DUALS(2)
- Vars
- P(a);::QAR1(B)
- P(c);::P(C)
- Refutation
- P(d);XQ(B)
- Try
- P(C);CHECK
- Vars
- S(b);OGATE,XP(C)::QAR1(B)
- Refutation
- K(e);P-FLIGHT,P_SPINS(b)
- Try
- Actual
- B(A);
- Vars
- K(e);N_GUARD,P-FLIGHT,P_SPINS(b)::S(E)
- P(a);OGATEB::QAR(B),XQ(a)
- P(a);OGATEB::QAR(B),XS(a)
- P(a);OGATEB::QAR(B),XB(a)
- P(a);OGATEB::QAR(B),XR(a)
- S(b);OGATE::QAR1(B)
- P(f);SBLOCK::QAB(B)
- P(h);N_GUARD::R(G),XP(f)
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).