MESON Chess Problem Database
Problem Display
PID: 2170 (8/8/1pp5/1NkP4/Pp3Brq/1Pp5/KNQ4b/3R3b w - - 0 1)
Chandler, Guy Wills
6th HM., BCF 051. Ty., 1945-1946
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Qf2
- 2.Qxf2#
- 1...Qg5
- 2.Qf2#
- 1...Qd8
- 2.Qf2#
- 1...Qh5
- 2.Qf2#
- 1...Qh6
- 2.Qf2#
- 1...Qh7
- 2.Qf2#
- 1...Rg3
- 2.Bd6#
- 1...Be4
- 2.Be3#
- 1...Bxd5
- 2.Sd3#
- 1...Bg1
- 2.Bd6#
- 1...Qf2
- Tries
- 1.Sxc3?
- threat
- 2.Sb1#
- 2.Se2#
- 2.Se4#
- 2.Sb5#
- 1...Rxf4
- 2.Se4#
- 1...Bxd5
- 2.Se4#
- 2.Sxd5#
- 1...Bxf4
- 2.Se4#
- 2.Sb5#
- 1...bxc3
- 2.Qxc3#
- 1...Qe1
- 2.Se4#
- 1...Qf2
- 2.Se2#
- 2.Se4#
- 2.Qxf2#
- 1...Qg3
- 2.Se4#
- 1...Qf6
- 2.Se4#
- 1...Qh3
- 2.Se4#
- 1...Qh7
- 2.Se4#
- 2.Qf2#
- 1...Qh8
- 2.Se4#
- 1...Rg2
- 2.Se2#
- 2.Se4#
- 1...Rg3
- 2.Se4#
- 1...Be4
- 2.Sxe4#
- 1...b5!
- threat
- 1.Qe4?
- threat
- 2.Sd3#
- 2.Be3#
- 2.Qe3#
- 2.Qc4#
- 2.Qd4#
- 1...Rxf4
- 2.Sd3#
- 1...Bxe4
- 2.Be3#
- 1...Bxf4
- 2.Sd3#
- 2.Qc4#
- 2.Qd4#
- 1...cxb2
- 2.Be3#
- 2.Qc2#
- 2.Qe3#
- 2.Qc4#
- 2.Qd4#
- 1...cxb5
- 2.Sd3#
- 2.Qe3#
- 2.Qd4#
- 1...Qe1
- 2.Sd3#
- 2.Qc4#
- 2.Qd4#
- 1...Qf2
- 2.Qc4#
- 2.Qe7#
- 1...Qg3
- 2.Qc4#
- 2.Qd4#
- 2.Qe7#
- 1...Qg5
- 2.Sd3#
- 2.Qe3#
- 2.Qc4#
- 2.Qd4#
- 1...Qf6
- 2.Sd3#
- 2.Qc4#
- 1...Qe7
- 2.Sd3#
- 2.Be3#
- 2.Qc4#
- 2.Qd4#
- 2.Qxe7#
- 1...Qh3
- 2.Qc4#
- 2.Qd4#
- 2.Qe7#
- 1...Qh6
- 2.Sd3#
- 2.Qe3#
- 2.Qc4#
- 2.Qd4#
- 1...Qh8
- 2.Sd3#
- 2.Qc4#
- 2.Qe7#
- 1...Rg2
- 2.Be3#
- 2.Qe3#
- 2.Qc4#
- 2.Qd4#
- 1...Rg3
- 2.Bd6#
- 2.Qc4#
- 2.Qd4#
- 1...Bg1
- 2.Sd3#
- 2.Bd6#
- 2.Qc4#
- 1...cxd5!
- threat
- 1.Sxc3?
- Keys
- 1.Qf5!
- threat
- 2.Sd3#
- 1...cxb2
- 2.Qc2#
- 1...cxb5
- 2.Qc8#
- 1...cxd5
- 2.Qc8#
- 1...Qf2
- 2.Qf8#
- 1...Qg3
- 2.Qf8#
- 1...Qh3
- 2.Qf8#
- 1...Rg2
- 2.d6#
- 1...Rg3
- 2.Bd6#
- 1...Be4
- 2.Be3#
- threat
- 1.Qf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 7
- Sets
- Q(f);N_GUARD::QAB(D),XQ(f)
- Q(f);N_GUARD::QAB(D)
- R(e);S_CUTB(b)::B(G)
- B(a);S_CUTR(e)::B(G)
- B(a);P_PINP(E),SBLOCK,XP(I)::S(C)
- B(b);N_GUARD::B(G)
- Tries
- Try
- S(H);XP(c)
- Threat
- DUALS(4)
- Vars
- R(e);XB(G)::QAR(D)+S(H),DCHECK
- P(d);OGATE,P_SPINP(d),XS(H)::QAR2(D),XP(d)
- Q(f);::QAR(D)+S(H),DCHECK
- R(e);::QAR(D)+S(H),DCHECK
- B(a);::QAR(D)+S(H),DCHECK,XB(a)
- Refutation
- P(h);
- Try
- Q(D);N_PINP(c)
- Threat
- DUALS(5)
- Vars
- R(e);XB(G)::S(C)
- B(a);XQ(D)::B(G)
- Refutation
- P(i);XP(I)
- Try
- Actual
- Q(D);N_PINP(c)
- Threat
- S(C)
- Vars
- P(c);OGATEB,XS(C)::QAR(D)
- P(i);OGATEB,XS(H)::QAR(D)
- P(i);OGATEB,P_SPINP(i),XP(I)::QAR(D)
- Q(f);N_GUARD,P_PINS(C)::QAB(D)
- Q(f);N_GUARD::QAB(D)
- R(e);P_PINS(C),S_CUTB(a)::QAR(D)+P(I)
- R(e);S_CUTB(b)::B(G)
- B(a);S_CUTR(e)::B(G)
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).