MESON Chess Problem Database
Problem Display
PID: 203653 (n7/1n1R4/4Q3/2k5/P1q1P3/P1N5/2R1P3/K3N3 w - - 0 1)
Fothergill, Percival Guy Laugham (PGLF)
Brisbane Courier, 1924
#2
10 + 4
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qa2+
- 2.Sxa2#
- 1...Qxe2
- 2.Sxe2#
- 1...Qb3
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qb5
- 2.Sxb5#
- 1...Qa6
- 2.Sb5#
- 1...Qxc3+
- 2.Rxc3#
- 1...Qxa4
- 2.Sd3#
- 1...Qb4
- 2.Sd3#
- 1...Qxe4
- 2.Sxe4#
- 1...Sa5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sd8
- 2.Qd6#
- 1...Qa2+
- Tries
- 1.Sb1?
- threat
- 2.Sd3#
- 2.Rxc4#
- 2.Rd5#
- 1...Qc3+
- 2.Rxc3#
- 1...Sd6
- 2.Qxd6#
- 1...Sa5
- 2.Sd3#
- 2.Rd5#
- 2.Qd6#
- 1...Sb6
- 2.Sd3#
- 1...Sc7
- 2.Sd3#
- 2.Rxc4#
- 1...Qxc2!
- threat
- 1.Sd1?
- threat
- 2.Sd3#
- 2.Rxc4#
- 2.Rd5#
- 1...Qc3+
- 2.Rxc3#
- 1...Sd6
- 2.Qxd6#
- 1...Sa5
- 2.Sd3#
- 2.Rd5#
- 2.Qd6#
- 1...Sb6
- 2.Sd3#
- 1...Sc7
- 2.Sd3#
- 2.Rxc4#
- 1...Qxc2!
- threat
- 1.Sa2?
- threat
- 2.Sd3#
- 2.Rxc4#
- 2.Rd5#
- 1...Qc3+
- 2.Rxc3#
- 1...Sd6
- 2.Qxd6#
- 1...Sa5
- 2.Sd3#
- 2.Rd5#
- 2.Qd6#
- 1...Sb6
- 2.Sd3#
- 1...Sc7
- 2.Sd3#
- 2.Rxc4#
- 1...Qxc2!
- threat
- 1.Sb5?
- threat
- 2.Sd3#
- 2.Rxc4#
- 2.Rd5#
- 1...Qc3+
- 2.Rxc3#
- 1...Sd6
- 2.Qxd6#
- 1...Sa5
- 2.Sd3#
- 2.Rd5#
- 2.Qd6#
- 1...Sb6
- 2.Sd3#
- 2.Rc7#
- 1...Sc7
- 2.Sd3#
- 2.Rxc4#
- 2.Rxc7#
- 1...Qxc2!
- threat
- 1.Sb1?
- Keys
- 1.e3!
- 1...Qa2+
- 2.Sxa2#
- 1...Qxc3+
- 2.Rxc3#
- 1...Qxe6
- 2.Sd5#
- 1...Qxa4
- 2.Sd3#
- 1...Qxe4
- 2.Sxe4#
- 1...Qd5
- 2.Sxd5#
- 1...Sd6
- 2.Qxd6#
- 1...Qf1
- 2.Se2#
- 1...Qe2
- 2.Sxe2#
- 1...Qb3
- 2.Sd3#
- 1...Qd3
- 2.Sxd3#
- 1...Qb5
- 2.Sxb5#
- 1...Qa6
- 2.Sb5#
- 1...Qb4
- 2.Sd3#
- 1...Qd4
- 2.exd4#
- 1...Sa5
- 2.Qd6#
- 1...Sd8
- 2.Qd6#
- 1...Sb6
- 2.Rc7#
- 1...Sc7
- 2.Rxc7#
- 1...Qa2+
- 1.e3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Q(a);CHECK::R(C)+S(F),XQ(a)
- Q(a);XP(D)::R(C)+S(F),XQ(a)
- Q(a);N_GUARD::S(B)
- Q(a);N_GUARD::S(B),XQ(a)
- Q(a);::R(C)+S(F),XQ(a)
- Q(a);::R(C)+S(F)
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(F)::R(C),XQ(a)
- Q(a);N_GUARD,P_PINP(E),XP(G)::S(B)
- Q(a);XP(H)::R(C)+S(F),DCHECK,XQ(a)
- S(c);N_GUARD::QAB1(I)
- S(c);N_GUARD::QAB1(I),XS(c)
- Tries
- Try
- S(F);P_PINQ(a)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATEB::R(C),XQ(a)
- S(c);N_GUARD::QAB1(I),XS(c)
- S(d);::S(B)
- Refutation
- Q(a);N_SPINQ(a),XR(C)
- Try
- S(F);P_PINQ(a)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATEB::R(C),XQ(a)
- S(c);N_GUARD::QAB1(I),XS(c)
- S(d);::S(B)
- Refutation
- Q(a);N_SPINQ(a),XR(C)
- Try
- S(F);P_PINQ(a)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATEB::R(C),XQ(a)
- S(c);N_GUARD::QAB1(I),XS(c)
- S(d);::S(B)
- Refutation
- Q(a);N_SPINQ(a),XR(C)
- Try
- S(F);P_PINQ(a)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,OGATEB::R(C),XQ(a)
- S(c);N_GUARD::QAB1(I),XS(c)
- Refutation
- Q(a);N_SPINQ(a),XR(C)
- Try
- Actual
- P(D);
- Vars
- Q(a);CHECK::R(C)+S(F),XQ(a)
- Q(a);CHECK,OGATE,P_SPINQ(a),XS(F)::R(C),XQ(a)
- Q(a);XQ(I)::R(C)+S(F)
- Q(a);N_GUARD,P_PINP(E),XP(G)::S(B)
- Q(a);XP(H)::R(C)+S(F),DCHECK,XQ(a)
- Q(a);::R(C)+S(F),XQ(a)
- S(c);N_GUARD::QAB1(I),XS(c)
- Q(a);P_PINS(B)::R(C)+S(F)
- Q(a);N_GUARD::S(B)
- Q(a);N_GUARD::S(B),XQ(a)
- Q(a);::R(C)+S(F)
- Q(a);OGATE,P_PINS(F)::P(D),XQ(a)
- S(c);N_GUARD::QAB1(I)
- S(d);N_GUARD::R(J)
- S(d);N_GUARD::R(J),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).