MESON Chess Problem Database
Problem Display
PID: 76580 (k1K5/3pP1PP/1Bb5/3B4/1R2rp2/5n2/2R4q/3Q2r1 w - - 0 1)
Holladay, Edgar Dinwiddie
Comm., New York Post, 1946-1948
#2
9 + 8
| 6232 | Holladay Chess Problems | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qg3
- 2.Ra2#
- 1...Qh1
- 2.Ra2#
- 1...Qh3
- 2.Ra2#
- 1...Qh4
- 2.Ra2#
- 1...Qh5
- 2.Ra2#
- 1...Qh6
- 2.Ra2#
- 1...Qxh7
- 2.Ra2#
- 1...Rg2
- 2.Qa1#
- 1...Rg3
- 2.Qa1#
- 1...Rg4
- 2.Qa1#
- 1...Rg5
- 2.Qa1#
- 1...Rg6
- 2.Qa1#
- 1...Rxg7
- 2.Qa1#
- 1...Re1
- 2.Ra4#
- 1...Re2
- 2.Ra4#
- 1...Re3
- 2.Ra4#
- 1...Re5
- 2.Ra4#
- 1...Re6
- 2.Ra4#
- 1...Rxe7
- 2.Ra4#
- 1...Bxd5
- 2.Qxd5#
- 1...Bb7+
- 2.Bxb7#
- 1...Se1
- 2.Qa1#
- 1...Sd2
- 2.Ra2#
- 1...Sd4
- 2.Ra4#
- 1...d6
- 2.Bxc6#
- 1...Qg3
- Tries
- 1.Bd4?
- threat
- 2.Ra4#
- 2.Rb8#
- 1...Bb7+
- 2.Bxb7#
- 1...Qxc2
- 2.Rb8#
- 1...Sxd4
- 2.Ra4#
- 1...Qd2
- 2.Rb8#
- 1...Qe2
- 2.Rb8#
- 1...Rxd4!
- threat
- 1.Bc5?
- threat
- 2.Rb8#
- 1...Bb7+
- 2.Bxb7#
- 1...Rxb4!
- threat
- 1.Rxh2?
- threat
- 2.Ra2#
- 2.Qa4#
- 1...Bb7+
- 2.Bxb7#
- 1...Rxd1
- 2.Ra2#
- 1...Bxd5
- 2.Qa4#
- 2.Qxd5#
- 1...Sxh2
- 2.Qa4#
- 1...Rg2
- 2.Qa4#
- 1...Re2
- 2.Ra4#
- 2.Qa4#
- 1...Re3
- 2.Ra4#
- 2.Qa4#
- 1...Sd2
- 2.Qa4#
- 1...Rxb4!
- threat
- 1.Rxc6?
- threat
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 2.Qa4#
- 1...Rxb4
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rc4#
- 2.Rc5#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 1...dxc6
- 2.Bxc6#
- 2.Qa4#
- 1...Qa2
- 2.Rcc4#
- 1...Qc2
- 2.Rxc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 1...Qd2
- 2.Qa4#
- 1...Qe2
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rh6#
- 2.Rc7#
- 1...Qh5
- 2.Qa4#
- 1...Qh6
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rg6#
- 2.Rxh6#
- 2.Qa4#
- 1...Rg5
- 2.Qa4#
- 1...Rg6
- 2.Rd6#
- 2.Re6#
- 2.Rf6#
- 2.Rxg6#
- 2.Qa4#
- 1...Rc4
- 2.Rcxc4#
- 2.Rc5#
- 2.Qa4#
- 1...Rd4
- 2.Qa4#
- 1...Re5
- 2.Ra4#
- 2.Qa4#
- 1...Re6
- 2.Ra4#
- 2.Rd6#
- 2.Rxe6#
- 2.Qa4#
- 1...Sd4
- 2.Ra4#
- 2.Qa4#
- 1...Se5
- 2.Qa4#
- 1...d6
- 2.Rc1#
- 2.Rc2#
- 2.Rc3#
- 2.Rcc4#
- 2.Rc5#
- 2.Rxd6#
- 2.Rc7#
- 2.Qa4#
- 1...Rxd1!
- threat
- 1.e8S?
- threat
- 2.Sc7#
- 1...Bb7+
- 2.Bxb7#
- 1...Rxe8+!
- threat
- 1.Bd4?
- Keys
- 1.Kc7!
- 1...Qxc2
- 2.h8Q#
- 2.h8R#
- 1...Qxh7
- 2.Ra2#
- 1...Rxd1
- 2.g8Q#
- 2.g8R#
- 1...Rxg7
- 2.Qa1#
- 1...Rxb4
- 2.e8Q#
- 2.e8R#
- 1...Rxe7
- 2.Ra4#
- 1...Bxd5
- 2.Qxd5#
- 1...Qg3
- 2.Ra2#
- 2.h8Q#
- 2.h8R#
- 1...Qh1
- 2.Ra2#
- 1...Qd2
- 2.h8Q#
- 2.h8R#
- 1...Qe2
- 2.h8Q#
- 2.h8R#
- 1...Qf2
- 2.h8Q#
- 2.h8R#
- 1...Qg2
- 2.h8Q#
- 2.h8R#
- 1...Qh3
- 2.Ra2#
- 1...Qh4
- 2.Ra2#
- 1...Qh5
- 2.Ra2#
- 1...Qh6
- 2.Ra2#
- 1...Rge1
- 2.g8Q#
- 2.g8R#
- 1...Rf1
- 2.g8Q#
- 2.g8R#
- 1...Rh1
- 2.g8Q#
- 2.g8R#
- 1...Rg2
- 2.Qa1#
- 1...Rg3
- 2.Qa1#
- 1...Rg4
- 2.Qa1#
- 1...Rg5
- 2.Qa1#
- 1...Rg6
- 2.Qa1#
- 1...Ree1
- 2.Ra4#
- 1...Re2
- 2.Ra4#
- 1...Re3
- 2.Ra4#
- 1...Rc4
- 2.e8Q#
- 2.e8R#
- 1...Rd4
- 2.e8Q#
- 2.e8R#
- 1...Re5
- 2.Ra4#
- 1...Re6
- 2.Ra4#
- 1...Bb7
- 2.Bxb7#
- 1...Se1
- 2.Qa1#
- 1...Sd2
- 2.Ra2#
- 1...Sd4
- 2.Ra4#
- 1...Sh4
- 2.h8Q#
- 2.h8R#
- 1...Se5
- 2.e8Q#
- 2.e8R#
- 1...Sg5
- 2.g8Q#
- 2.g8R#
- 1...d6
- 2.Bxc6#
- 1...Qxc2
- 1.Kc7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- Q(b);N_GUARD::R(B)
- Q(b);N_GUARD,SBLOCK::R(B)
- Q(b);N_GUARD,SBLOCK,XP(H)::R(B)
- R(a);N_GUARD::QAB(A)
- R(a);N_GUARD,XP(G)::QAB(A)
- R(d);N_GUARD::R(C)
- R(d);N_GUARD,XP(F)::R(C)
- B(f);N_SPINB(f),OGATE,XB(D)::QAB(A),XB(f)
- B(f);CHECK,OGATE::B(D),XB(f)
- S(c);S_CUTR(a)::QAB(A)
- S(c);S_CUTQ(b)::R(B)
- S(c);S_CUTR(d)::R(C)
- P(g);N_GUARD::B(D),XB(f)
- Tries
- Try
- B(E);
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,OGATE::B(D),XB(f)
- Q(b);XR(B)::R1(C)
- S(c);XB(E)::R(C)
- Q(b);::R1(C)
- Refutation
- R(d);XB(E)
- Try
- B(E);
- Threat
- R1(C)
- Vars
- B(f);CHECK,OGATE::B(D),XB(f)
- Refutation
- R(d);XR(C)
- Try
- R(B);XQ(b)
- Threat
- DUALS(2)
- Vars
- B(f);CHECK,OGATE::B(D),XB(f)
- R(a);XQ(A)::R(B)
- S(c);XR(B)::QAR(A)
- R(a);::QAR(A)
- S(c);::QAR(A)
- Refutation
- R(d);XR(C)
- Try
- R(B);XB(f)
- Threat
- DUALS(12)
- Vars
- Q(b);::B(D)+R(B)
- Q(b);::QAR(A)
- R(a);::QAR(A)
- R(d);::QAR(A)
- S(c);::QAR(A)
- Refutation
- R(a);XQ(A)
- Try
- P(F);
- Threat
- S(F)
- Vars
- B(f);CHECK,OGATE::B(D),XB(f)
- Refutation
- R(d);CHECK,XS(F)
- Try
- Actual
- K(I);P-FLIGHT
- Vars
- Q(b);N_GUARD,XR(B)::P=Q
- Q(b);N_GUARD,SBLOCK,XP(H)::R(B)
- R(a);N_GUARD,XQ(A)::P=Q
- R(a);N_GUARD,XP(G)::QAB(A)
- R(d);N_GUARD,XR(C)::P=Q
- R(d);N_GUARD,XP(F)::R(C)
- B(f);N_SPINB(f),OGATE,XB(D)::QAB(A),XB(f)
- Q(b);N_GUARD::R(B)
- Q(b);N_GUARD::P=Q
- Q(b);N_GUARD,SBLOCK::R(B)
- R(a);N_GUARD::P=Q
- R(a);N_GUARD::QAB(A)
- R(d);N_GUARD::R(C)
- R(d);N_GUARD::P=Q
- B(f);OGATE::B(D),XB(f)
- S(c);S_CUTR(a)::QAB(A)
- S(c);S_CUTQ(b)::R(B)
- S(c);S_CUTR(d)::R(C)
- S(c);S_CUTQ(b)::P=Q
- S(c);S_CUTR(d)::P=Q
- S(c);S_CUTR(a)::P=Q
- P(g);N_GUARD::B(D),XB(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).