MESON Chess Problem Database
Problem Display
PID: 202544 (2K5/3p1N1B/4P1R1/3p1q2/3pkrR1/1n2p3/4Q3/5N1n w - - 0 1)
Clark, Robert Winslow
Brisbane Courier, 1923
#2
8 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Qxg4
- 2.Rxg4#
- 1...Qxe6
- 2.Rxe6#
- 1...Qxg6
- 2.Bxg6#
- 1...Qg5
- 2.R6xg5#
- 1...Qf6
- 2.Rxf6#
- 1...Rxg4
- 2.Rxg4#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sa1
- 2.Sd2#
- 1...Sc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sa5
- 2.Sd2#
- 1...Sc5
- 2.Sd2#
- 1...d3
- 2.Qxe3#
- 1...dxe6
- 2.Rxe6#
- 1...Qxg4
- Tries
- 1.Sg5+?
- 1...Qxg5
- 2.R6xg5#
- 1...Ke5!
- 1...Qxg5
- 1.Rxf4+?
- 1...Qxf4
- 2.Rg4#
- 1...Kxf4!
- 1...Qxf4
- 1.R6g5?
- threat
- 2.Bxf5#
- 1...Qxh7
- 2.Sd6#
- 2.Re5#
- 1...Rxg4
- 2.Rxg4#
- 1...d3
- 2.Qxe3#
- 1...Qg6
- 2.Sd6#
- 2.Bxg6#
- 2.Re5#
- 1...Sg3
- 2.Sxg3#
- 1...dxe6!
- threat
- 1.Rf6?
- threat
- 2.Bxf5#
- 1...Qxh7
- 2.Rgxf4#
- 2.Rfxf4#
- 1...dxe6
- 2.Rxe6#
- 1...d3
- 2.Qxe3#
- 1...Qg6
- 2.Bxg6#
- 2.Rgxf4#
- 2.Rfxf4#
- 1...Sg3
- 2.Sxg3#
- 1...Rxg4!
- threat
- 1.Qc2+?
- 1...Kf3
- 2.Sh2#
- 2.Qg2#
- 1...d3!
- 1...Kf3
- 1.exd7?
- threat
- 2.Re6#
- 1...Qxg6
- 2.Bxg6#
- 1...Rxg4
- 2.Rxg4#
- 1...Qe6
- 2.Rxe6#
- 1...Qf6
- 2.Rxf6#
- 1...d3
- 2.Qxe3#
- 1...Sc5
- 2.Sd2#
- 1...Qxd7+!
- threat
- 1.Sg5+?
- Keys
- 1.e7!
- 1...d6+
- 2.Re6#
- 1...Qxg4
- 2.Rxg4#
- 2.Re6#
- 1...Qxg6
- 2.Bxg6#
- 1...Qxf7
- 2.Re6#
- 1...Rxg4
- 2.Rxg4#
- 1...Qe6
- 2.Rxe6#
- 1...Qe5
- 2.Re6#
- 1...Qg5
- 2.R6xg5#
- 2.Re6#
- 1...Qh5
- 2.Re6#
- 1...Qf6
- 2.Rxf6#
- 1...d3
- 2.Qxe3#
- 1...Sf2
- 2.Sg3#
- 1...Sg3
- 2.Sxg3#
- 1...Sa1
- 2.Sd2#
- 1...Sc1
- 2.Sd2#
- 1...Sd2
- 2.Sxd2#
- 1...Sa5
- 2.Sd2#
- 1...Sc5
- 2.Sd2#
- 1...d6+
- 1.e7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(h);N_SPINR(f),OGATE,XR(C)::B(G)+R(E),XQ(h)
- Q(h);OGATE,XP(D)::B(G)+R(E),DCHECK,XQ(h)
- Q(h);OGATE,P_SPINQ(h),XR(E)::B(G),XQ(h)
- Q(h);OGATEB::B(G)+R(E),XQ(h)
- R(f);N_SPINR(f),OGATE,XR(C)::R(E),XR(f)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- P(d);N_GUARD::QAR1(B),XP(c)
- P(i);OGATE,XP(D)::R(E),XP(i)
- Tries
- Try
- S(F);CHECK
- Vars
- Q(h);OGATE,XS(F)::B(G)+R(E),XQ(h)
- Refutation
- K(e);N_SPINR(f),P-FLIGHT
- Try
- R(C);CHECK,XR(f)
- Vars
- Q(h);XR(C)::B(G)+R(E)
- Refutation
- K(e);N_SPINP(c),P-FLIGHT,XR(C)
- Try
- R(E);P_PINQ(h)
- Threat
- B(G),XQ(h)
- Vars
- R(f);N_SPINR(f),OGATE,XR(C)::R(E),XR(f)
- P(d);N_GUARD::QAR1(B),XP(c)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- P(i);XP(D)
- Try
- R(E);P_PINQ(h)
- Threat
- B(G),XQ(h)
- Vars
- P(i);OGATE,XP(D)::R(E),XP(i)
- P(d);N_GUARD::QAR1(B),XP(c)
- S(a);N_GUARD::S(A),XS(a)
- Refutation
- R(f);N_SPINR(f),XR(C)
- Try
- Q(B);CHECK,N_PINP(c)
- Refutation
- P(d);P_SPINP(d)
- Try
- P(D);P_SPINP(D),XP(i)
- Threat
- R(E)
- Vars
- Q(h);N_PINP(D),OGATE,P_SPINQ(h),XR(E)::B(G),XQ(h)
- R(f);N_SPINR(f),OGATE,XR(C)::R(E),XR(f)
- Q(h);::B(G)+R(E),DCHECK,XQ(h)
- Q(h);N_PINP(D),OGATEB::B(G)+R(E),XQ(h)
- P(d);N_GUARD::QAR1(B),XP(c)
- S(b);N_GUARD::S(A)
- Refutation
- Q(h);CHECK,XP(D)
- Try
- Actual
- P(D);
- Vars
- P(i);CHECK,N_GUARD::R(E)
- Q(h);OGATE,P_SPINQ(h),XR(E)::B(G),XQ(h)
- Q(h);XS(F)::B(G)+R(E),DCHECK
- R(f);N_SPINR(f),OGATE,XR(C)::R(E),XR(f)
- Q(h);::B(G)+R(E),DCHECK,XQ(h)
- Q(h);S_CUTP(i)::B(G)+R(E)
- Q(h);::B(G)+R(E),DCHECK
- Q(h);OGATEB::B(G)+R(E),XQ(h)
- P(d);N_GUARD::QAR1(B),XP(c)
- S(a);N_GUARD::S(A)
- S(a);N_GUARD::S(A),XS(a)
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
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).