MESON Chess Problem Database
Problem Display
PID: 77424 (4bR2/3n1q2/3n2N1/1B4b1/1Q4Rp/1N3k2/K6P/6B1 w - - 0 1)
Holladay, Edgar Dinwiddie
Comm., Problem Observer, 1988
#2
9 + 7
| 6232 | Holladay Chess Problems | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Bc1
- 2.Sxh4#
- 1...Bd2
- 2.Sxh4#
- 1...Be3
- 2.Sxh4#
- 1...Bf6
- 2.Qf4#
- 1...Bh6
- 2.Sxh4#
- 1...Se4
- 2.Qxe4#
- 1...Sxb5
- 2.Qe4#
- 1...Sf5
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sc8
- 2.Qe4#
- 1...Sc5
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sb6
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sb8
- 2.Se5#
- 1...Sxf8
- 2.Se5#
- 1...h3
- 2.Rg3#
- 1...Bc1
- Tries
- 1.Bc6+?
- 1...Se4
- 2.Qxe4#
- 1...Ke2!
- 1...Se4
- 1.Rxf7+?
- 1...Bf4
- 2.Rfxf4#
- 2.Qxf4#
- 1...Bf6
- 2.Sd2#
- 2.Sxh4#
- 2.Qf4#
- 1...Sf5
- 2.Qe4#
- 1...Sxf7
- 2.Qe4#
- 1...Sf6
- 2.Se5#
- 1...Bxf7!
- 1...Bf4
- 1.Qe1?
- threat
- 2.Be2#
- 2.Qd1#
- 2.Qe2#
- 1...Sxb5
- 2.Qd1#
- 2.Qe4#
- 1...Qf4
- 2.Qe2#
- 1...Bf4
- 2.Qe2#
- 1...Sc4
- 2.Qd1#
- 2.Qe4#
- 1...Kxg4!
- threat
- 1.Qc4?
- threat
- 2.Qe2#
- 1...Sxb5
- 2.Qe4#
- 1...Sxc4!
- threat
- 1.Bc6+?
- Keys
- 1.h3!
- 1...Qxf8
- 2.Sd4#
- 1...Sxb5
- 2.Qe4#
- 1...Sxf8
- 2.Se5#
- 1...Sc4
- 2.Sd4#
- 1...Qf4
- 2.Sd2#
- 1...Qf5
- 2.Sd4#
- 1...Qf6
- 2.Sd4#
- 1...Bc1
- 2.Sxh4#
- 1...Bd2
- 2.Sxh4#
- 1...Be3
- 2.Sxh4#
- 1...Bf4
- 2.Sxh4#
- 1...Bf6
- 2.Qf4#
- 1...Bh6
- 2.Sxh4#
- 1...Be7
- 2.Qc3#
- 1...Bd8
- 2.Qc3#
- 1...Se4
- 2.Qxe4#
- 1...Sf5
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sc8
- 2.Qe4#
- 1...Sc5
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sb6
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sb8
- 2.Se5#
- 1...Qxf8
- 1.h3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 8
- REMOVED MATES = 1
- Sets
- B(c);N_GUARD::S(H),XP(b)
- B(c);N_GUARD,N_SPINQ(f),S_CUTQ(f)::QAR1(E)
- S(d);N_GUARD::QAB1(E),XS(d)
- S(d);N_GUARD,XB(G)::QAB1(E)
- S(d);N_GUARD,N_SPINQ(f)::QAB1(E)
- S(d);N_GUARD::QAB1(E)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(e);N_GUARD,N_SPINQ(f)::S(H)
- S(e);N_GUARD,N_SPINQ(f),XR(I)::S(H)
- P(b);N_GUARD::R1(F)
- Tries
- Try
- B(G);CHECK
- Vars
- S(d);N_GUARD,P_SPINS(d)::QAB1(E),XS(d)
- Refutation
- K(a);N_SPINQ(f),S_FLIGHT
- Try
- R(I);CHECK,N_SPINS(D),XQ(f)
- Vars
- S(d);P_SPINS(d)::QAB1(E)
- S(d);XR(I)::QAB1(E)
- S(e);P_SPINS(e)::S(H)
- Refutation
- B(g);P_PINS(D),XR(I)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- Q(f);N_PINS(D)::QAB1(E)
- B(c);N_SPINQ(f)::QAB1(E)
- Refutation
- K(a);N_SPINQ(f),S_FLIGHT,XR(F)
- Try
- Q(E);N_SPINS(D)
- Threat
- QAB1(E)
- Vars
- S(d);N_GUARD,XB(G)::QAB1(E)
- Refutation
- S(d);XQ(E)
- Try
- Actual
- P(C);
- Vars
- Q(f);N_PINS(D),N_SPINQ(f),XR(I)::S(D)
- S(d);N_GUARD,XB(G)::QAB1(E)
- S(e);N_GUARD,N_SPINQ(f),XR(I)::S(H)
- S(d);N_PINS(D)::S(D)
- Q(f);N_PINS(D)::S(D)
- B(c);N_GUARD::S(H),XP(b)
- B(c);N_GUARD,N_SPINQ(f)::S(H),XP(b)
- B(c);N_GUARD,N_SPINQ(f),S_CUTQ(f)::QAR1(E)
- B(c);N_GUARD::QAR(E)
- S(d);N_GUARD::QAB1(E),XS(d)
- S(d);N_GUARD,N_SPINQ(f)::QAB1(E)
- S(d);N_GUARD::QAB1(E)
- S(e);N_GUARD::S(H)
- S(e);N_GUARD::S(H),XS(e)
- S(e);N_GUARD,N_SPINQ(f)::S(H)
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).