MESON Chess Problem Database
Problem Display
PID: 77106 (n2b4/N7/3p4/n2k1P2/1P2pP2/1q1N3K/Q7/2RR2B1 w - - 0 1)
Holladay, Edgar Dinwiddie
1st Prize, Chess, 1958
#2
10 + 7
| 81 | Chess | 1959 |
| 6232 | Holladay Chess Problems | 2007 |
| 56 | The Problemist | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Qxa2
- 2.Sb2#
- 1...Qc4
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sc5#
- 2.Se5#
- 1...Bh4
- 2.Qxa5#
- 1...Bg5
- 2.Qxa5#
- 1...Bf6
- 2.Qxa5#
- 1...Be7
- 2.Qxa5#
- 1...Sc6
- 2.Qxb3#
- 1...Sb7
- 2.Qxb3#
- 1...Sb6
- 2.Qxa5#
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Sf2#
- 2.Sc5#
- 1...Qxa2
- Tries
- 1.Kh2?
- threat
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sc5#
- 2.Se5#
- 1...Qxa2+
- 2.Sb2#
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Sf2#
- 2.Sc5#
- 1...Bb6
- 2.Sc5#
- 1...Bf6
- 2.Se5#
- 2.Qxa5#
- 1...Sc6
- 2.Qxb3#
- 1...Sc4!
- threat
- 1.Kg4?
- threat
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sc5#
- 2.Se5#
- 1...Qxa2
- 2.Sb2#
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Sf2#
- 2.Sc5#
- 1...Bb6
- 2.Sc5#
- 1...Bf6
- 2.Se5#
- 2.Qxa5#
- 1...Sc6
- 2.Qxb3#
- 1...Sc4!
- threat
- 1.Be3?
- threat
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sc5#
- 2.Se5#
- 1...Qxa2
- 2.Sb2#
- 1...exd3
- 2.Qg2#
- 1...Bb6
- 2.Sc5#
- 1...Bf6
- 2.Se5#
- 2.Qxa5#
- 1...Sc6
- 2.Qxb3#
- 1...Sc4!
- threat
- 1.Rc3?
- threat
- 2.Sc1#
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sc5#
- 2.Se5#
- 1...Qxa2
- 2.Sb2#
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Sf2#
- 2.Sc5#
- 1...Bb6
- 2.Sc5#
- 1...Bf6
- 2.Se5#
- 2.Qxa5#
- 1...Sc6
- 2.Qxb3#
- 1...Sc4!
- threat
- 1.Qxb3+?
- 1...Sc4
- 2.Se1#
- 2.Sb2#
- 2.Sf2#
- 2.Sc5#
- 2.Se5#
- 2.Qxc4#
- 1...Sxb3!
- 1...Sc4
- 1.bxa5?
- threat
- 2.Qxb3#
- 1...Qxa2
- 2.Sb2#
- 2.Sb4#
- 1...exd3
- 2.Qg2#
- 1...e3
- 2.Sf2#
- 2.Sc5#
- 1...Qc4
- 2.Se1#
- 2.Sb2#
- 2.Sb4#
- 2.Sc5#
- 2.Se5#
- 2.Qxc4#
- 1...Sb6!
- threat
- 1.Kh2?
- Keys
- 1.Sc8!
- 1...Qxa2
- 2.Sb2#
- 1...exd3
- 2.Qg2#
- 1...Qc4
- 2.Se5#
- 1...Sc4
- 2.Qxa8#
- 1...e3
- 2.Sf2#
- 1...Bh4
- 2.Qxa5#
- 1...Bg5
- 2.Qxa5#
- 1...Bb6
- 2.Se7#
- 1...Bf6
- 2.Qxa5#
- 1...Bc7
- 2.Se7#
- 1...Be7
- 2.Sxe7#
- 2.Qxa5#
- 1...Sc6
- 2.Qxb3#
- 1...Sb7
- 2.Qxb3#
- 1...Sb6
- 2.Qxa5#
- 1...Sc7
- 2.Sb6#
- 1...Qxa2
- 1.Sc8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- Q(a);N_PINS(E),N_SPINQ(a),XQ(D)::R(B)+S(E)
- B(g);N_GUARD::QAR(D),XS(c)
- S(c);N_GUARD::QAB(D),XQ(a)
- S(f);S_CUTB(g)::QAR(D),XS(c)
- P(b);OGATEB,P_SPINP(b),XS(E)::QAB(D)
- Tries
- Try
- K(F);N_SPINS(E),P-FLIGHT
- Threat
- DUALS(5)
- Vars
- Q(a);CHECK,N_SPINQ(a),XQ(D)::R(B)+S(E)
- P(b);OGATEB,P_SPINP(b),XS(E)::QAB(D)
- B(g);::R(B)+S(E)
- S(c);N_GUARD::QAB(D),XQ(a)
- Refutation
- S(c);N_SPINQ(a)
- Try
- K(F);N_SPINS(E),S_FLIGHT
- Threat
- DUALS(5)
- Vars
- Q(a);N_SPINQ(a),XQ(D)::R(B)+S(E)
- P(b);OGATEB,P_SPINP(b),XS(E)::QAB(D)
- B(g);::R(B)+S(E)
- S(c);N_GUARD::QAB(D),XQ(a)
- Refutation
- S(c);N_SPINQ(a)
- Try
- B(C);N_SPINS(E)
- Threat
- DUALS(5)
- Vars
- Q(a);N_SPINQ(a),XQ(D)::R(B)+S(E)
- P(b);OGATEB,P_SPINP(b),XS(E)::QAB(D)
- B(g);::R(B)+S(E)
- S(c);N_GUARD::QAB(D),XQ(a)
- Refutation
- S(c);N_SPINQ(a)
- Try
- R(A);N_SPINS(E)
- Threat
- DUALS(6)
- Vars
- Q(a);N_SPINQ(a),XQ(D)::R(B)+S(E)
- P(b);OGATEB,P_SPINP(b),XS(E)::QAB(D)
- B(g);::R(B)+S(E)
- S(c);N_GUARD::QAB(D),XQ(a)
- Refutation
- S(c);N_SPINQ(a)
- Try
- Q(D);CHECK,N_SPINS(E),XQ(a)
- Refutation
- S(c);XQ(D)
- Try
- P(G);XS(c)
- Threat
- QAB(D),XQ(a)
- Vars
- P(b);OGATEB,P_SPINP(b),XS(E)::QAB(D)
- Refutation
- S(f);
- Try
- Actual
- S(J);
- Vars
- Q(a);N_PINS(E),N_SPINQ(a),XQ(D)::R(B)+S(E)
- P(b);OGATEB,P_SPINP(b),XS(E)::QAB(D)
- Q(a);N_PINS(E)::R(B)+S(E)
- S(c);N_SPINQ(a),OGATE::QAB(D),XS(f)
- P(b);N_PINS(E)::R(B)+S(E)
- B(g);N_GUARD::QAR(D),XS(c)
- B(g);N_GUARD::S(J)
- S(c);N_GUARD::QAB(D),XQ(a)
- S(f);S_CUTB(g)::QAR(D),XS(c)
- S(f);N_GUARD,S_CUTB(g)::S(J)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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