MESON Chess Problem Database
Problem Display
PID: 226315 (6K1/2p2Q2/4R3/1Npkn3/4R3/8/4n1P1/8 w - - 0 1)
Bernard, Henry D'Oyly
British Chess Magazine, 1930
#2
6 + 5
SOLUTION
- SOUND
- Sets
- 1...Kxe4
- 2.Qf3#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sd3
- 2.Sxc7#
- 2.Qd7#
- 1...Sf3
- 2.Sxc7#
- 2.Qd7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 2.Qd7#
- 1...Sc6
- 2.Sxc7#
- 2.R6e5#
- 2.Re7#
- 2.Re8#
- 2.Qd7#
- 1...Sg6
- 2.Sxc7#
- 2.Qd7#
- 1...Sd7
- 2.Sxc7#
- 2.Qxd7#
- 1...Sxf7
- 2.Sxc7#
- 1...c4
- 2.R4xe5#
- 1...c6
- 2.R6xe5#
- 1...Kxe4
- Tries
- 1.Kg7?
- 1...Kxe4
- 2.Qf3#
- 1...Sxf7
- 2.Sxc7#
- 1...c4
- 2.R4xe5#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sd3
- 2.Sxc7#
- 2.Qd7#
- 1...Sf3
- 2.Sxc7#
- 2.Qd7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 2.Qd7#
- 1...Sc6
- 2.Sxc7#
- 2.R6e5#
- 2.Re7#
- 2.Re8#
- 2.Qd7#
- 1...Sg6
- 2.Sxc7#
- 2.Qd7#
- 1...Sd7
- 2.Sxc7#
- 2.Qxd7#
- 1...c6
- 2.R6xe5#
- 1...Sd4!
- 1...Kxe4
- 1.Kh7?
- 1...Kxe4
- 2.Qf3#
- 1...Sxf7
- 2.Sxc7#
- 1...c4
- 2.R4xe5#
- 1...Sc1
- 2.Sc3#
- 1...Sg1
- 2.Sc3#
- 1...Sc3
- 2.Sxc3#
- 1...Sg3
- 2.Sc3#
- 1...Sf4
- 2.Sc3#
- 1...Sd3
- 2.Sxc7#
- 2.Qd7#
- 1...Sf3
- 2.Sxc7#
- 2.Qd7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 2.Qd7#
- 1...Sc6
- 2.Sxc7#
- 2.R6e5#
- 2.Re7#
- 2.Re8#
- 2.Qd7#
- 1...Sg6
- 2.Sxc7#
- 2.Qd7#
- 1...Sd7
- 2.Sxc7#
- 2.Qxd7#
- 1...c6
- 2.R6xe5#
- 1...Sd4!
- 1...Kxe4
- 1.Qh5?
- threat
- 2.Qxe5#
- 1...Kxe4
- 2.Qf3#
- 1...Kxe6
- 2.Qf7#
- 1...Sd4!
- threat
- 1.Qg6?
- threat
- 2.Sxc7#
- 2.R6xe5#
- 1...Sxg6
- 2.Sxc7#
- 1...c4
- 2.R4xe5#
- 2.R6xe5#
- 1...Sd3
- 2.Sxc7#
- 1...Sf3
- 2.Sxc7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 1...Sc6
- 2.Sxc7#
- 1...Sd7
- 2.Sxc7#
- 1...Sf7
- 2.Sxc7#
- 1...c6
- 2.Sc7#
- 2.R6xe5#
- 2.Rd6#
- 1...Sd4!
- threat
- 1.Qf3?
- threat
- 2.Sxc7#
- 1...Kxe6
- 2.Qf7#
- 1...c4
- 2.R4xe5#
- 1...c6
- 2.Sc7#
- 2.R6xe5#
- 2.Rd6#
- 1...Sd4!
- threat
- 1.Qf5?
- threat
- 2.Sxc7#
- 2.Qxe5#
- 1...c4
- 2.R4xe5#
- 2.Qxe5#
- 1...c6
- 2.Sc7#
- 2.R6xe5#
- 2.Rd6#
- 2.Qxe5#
- 1...Sd4!
- threat
- 1.Qf6?
- threat
- 2.R6xe5#
- 2.Qxe5#
- 1...Kxe4
- 2.Qf3#
- 1...Sd3
- 2.Sxc7#
- 2.Qd8#
- 1...Sf3
- 2.Sxc7#
- 2.Qd8#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 2.Qd8#
- 1...Sc6
- 2.Sxc7#
- 1...Sg6
- 2.Sxc7#
- 2.Qd8#
- 1...Sd7
- 2.Sxc7#
- 1...Sf7
- 2.Sxc7#
- 1...Sd4!
- threat
- 1.Qd7+?
- 1...Sxd7
- 2.Sxc7#
- 1...Kxe4!
- 1...Sxd7
- 1.Qh7?
- threat
- 2.Sxc7#
- 1...Kxe6
- 2.Qf7#
- 1...c4
- 2.R4xe5#
- 1...c6
- 2.Sc7#
- 2.R6xe5#
- 2.Rd6#
- 1...Sd4!
- threat
- 1.Kg7?
- Keys
- 1.Qf1!
- 1...Kxe4
- 2.Qf3#
- 1...Kxe6
- 2.Qf7#
- 1...c4
- 2.R4xe5#
- 1...Sc1
- 2.R4xe5#
- 1...Sg1
- 2.R4xe5#
- 1...Sc3
- 2.R4xe5#
- 1...Sg3
- 2.R4xe5#
- 1...Sd4
- 2.R4xe5#
- 1...Sf4
- 2.R4xe5#
- 1...Sd3
- 2.Sxc7#
- 1...Sf3
- 2.Sxc7#
- 1...Sc4
- 2.Sxc7#
- 1...Sg4
- 2.Sxc7#
- 1...Sc6
- 2.Sxc7#
- 1...Sg6
- 2.Sxc7#
- 1...Sd7
- 2.Sxc7#
- 1...Sf7
- 2.Sxc7#
- 1...c6
- 2.R6xe5#
- 1...Kxe4
- 1.Qf1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(B)::QAB1(E)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(d);::S(C),XP(e)
- S(d);XQ(E)::S(C),XP(e)
- P(b);SBLOCK::R1(B),XS(d)
- P(e);SBLOCK::QAB(E)+R(D),DCHECK,XS(d)
- Tries
- Try
- K(F);P-FLIGHT
- Vars
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(B)::QAB1(E)
- S(d);XQ(E)::S(C),XP(e)
- P(b);SBLOCK::R1(B),XS(d)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(d);::S(C),XP(e)
- P(e);SBLOCK::QAB(E)+R(D),DCHECK,XS(d)
- Refutation
- S(a);
- Try
- K(F);S_FLIGHT
- Vars
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(B)::QAB1(E)
- S(d);XQ(E)::S(C),XP(e)
- P(b);SBLOCK::R1(B),XS(d)
- S(a);N_GUARD::S(C)
- S(a);N_GUARD::S(C),XS(a)
- S(d);::S(C),XP(e)
- P(e);SBLOCK::QAB(E)+R(D),DCHECK,XS(d)
- Refutation
- S(a);
- Try
- Q(E);P_PINS(d)
- Threat
- QAR1(E),XS(d)
- Vars
- K(c);OGATEB,S_FLIGHT,XR(B)::QAB1(E)
- K(c);OGATEB,S_FLIGHT,XR(D)::QAB1(E)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- S(d);XQ(E)::S(C),XP(e)
- S(d);::S(C),XP(e)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- S(C),XP(e)
- Vars
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(D)::QAB1(E)
- P(b);SBLOCK::QAB(E)+R(B),DCHECK,XS(d)
- Refutation
- S(a);
- Try
- Q(E);P_PINS(d)
- Threat
- DUALS(2)
- Refutation
- S(a);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(B)::QAB1(E)
- S(d);::S(C),XP(e)
- Refutation
- S(a);
- Try
- Q(E);CHECK
- Vars
- S(d);XQ(E)::S(C),XP(e)
- Refutation
- K(c);P_SPINS(d),S_FLIGHT,XR(B)
- Try
- Q(E);
- Threat
- S(C),XP(e)
- Vars
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(D)::QAB1(E)
- P(b);SBLOCK::R1(B),XS(d)
- Refutation
- S(a);
- Try
- Actual
- Q(E);
- Vars
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(B)::QAB1(E)
- K(c);OGATEB,P_SPINS(d),S_FLIGHT,XR(D)::QAB1(E)
- P(b);SBLOCK::R1(B),XS(d)
- S(a);::R1(B),XS(d)
- S(d);::S(C),XP(e)
- P(e);SBLOCK::R1(D),XS(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).