MESON Chess Problem Database
Problem Display
PID: 53530 (r7/2nR1QBp/5qp1/7n/3Nk1P1/1p3Rp1/2r5/1B1K1N2 w - - 0 1)
Holladay, Edgar Dinwiddie
3rd Prize, Chess Life, 1955
#2
9 + 10
| 268 | Chess Life | 1959 |
| 6232 | Holladay Chess Problems | 2007 |
SOLUTION
- SOUND
- Sets
- 1...Qxd4+
- 2.Rxd4#
- 1...Qh4
- 2.Sd2#
- 2.Re3#
- 1...Qe5
- 2.Sd2#
- 2.Re3#
- 1...Qe7
- 2.Sd2#
- 2.Re3#
- 1...Qxg7
- 2.Re3#
- 1...Qd8
- 2.Sd2#
- 2.Re3#
- 1...Qxf3+
- 2.Qxf3#
- 1...Qf5
- 2.Sd2#
- 1...Qa6
- 2.Sd2#
- 2.Re3#
- 1...Qb6
- 2.Sd2#
- 2.Re3#
- 1...Qc6
- 2.Sd2#
- 2.Re3#
- 1...Qd6
- 2.Sd2#
- 2.Re3#
- 1...Qe6
- 2.Sd2#
- 2.Re3#
- 1...Qxf7
- 2.Sd2#
- 1...Sf4
- 2.Re3#
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sa6
- 2.Qd5#
- 1...Se8
- 2.Qd5#
- 1...Qxd4+
- Tries
- 1.Bxc2+?
- 1...Ke5
- 2.Sc6#
- 1...bxc2+!
- 1...Ke5
- 1.Qxb3?
- threat
- 2.Qe3#
- 1...Qxd4+
- 2.Rxd4#
- 1...Qxf3+
- 2.Qxf3#
- 1...Ke5
- 2.Qe3#
- 1...Sd5
- 2.Qxd5#
- 1...Qg5
- 2.Bxc2#
- 2.Qxc2#
- 2.Qd3#
- 1...Qf4
- 2.Bxc2#
- 2.Qxc2#
- 2.Qd3#
- 1...Qd6
- 2.Sd2#
- 2.Bxc2#
- 1...Ra3!
- threat
- 1.Qe6+?
- 1...Qe5
- 2.Sd2#
- 2.Qxe5#
- 1...Qxe6
- 2.Sd2#
- 1...Sxe6!
- 1...Qe5
- 1.Qxg6+?
- 1...Ke5
- 2.Qf5#
- 1...Qf5
- 2.Sd2#
- 2.Qxf5#
- 1...Qxg6
- 2.Sd2#
- 1...hxg6!
- 1...Ke5
- 1.Qxf6?
- threat
- 2.Sd2#
- 2.Re3#
- 2.Qe5#
- 1...Sxg7
- 2.Sd2#
- 2.Sxg3#
- 2.Re3#
- 2.Qf4#
- 1...Ra5
- 2.Sd2#
- 2.Re3#
- 1...Re8
- 2.Sd2#
- 2.Re3#
- 1...Sd5
- 2.Sd2#
- 2.Qe5#
- 2.Qe6#
- 1...Sxf6!
- threat
- 1.Qe7+?
- 1...Qe5
- 2.Sd2#
- 2.Qxe5#
- 1...Qxe7
- 2.Sd2#
- 1...Qe6
- 2.Sd2#
- 1...Se6!
- 1...Qe5
- 1.Bxc2+?
- Keys
- 1.Qc4!
- threat
- 2.Qe2#
- 1...Qxd4+
- 2.Sd2#
- 1...Qxf3+
- 2.Se2#
- 1...Ke5
- 2.Sc6#
- 1...Qg5
- 2.Qd3#
- 1...Qf4
- 2.Qd3#
- 1...Qa6
- 2.Sd2#
- 1...Qd6
- 2.Sd2#
- 1...Sf4
- 2.Re3#
- 1...Sd5
- 2.Qxd5#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 5
- REMOVED MATES = 6
- Sets
- Q(f);CHECK,OGATE,XS(E)::R1(G),XQ(f)
- Q(f);XB(I)::R1(D)
- Q(f);CHECK,OGATE,XR(D)::QAB1(H),XQ(f)
- Q(f);::S(C)
- Q(f);XQ(H)::S(C)
- S(e);SBLOCK::R1(D)
- S(h);N_GUARD::QAB1(H)
- S(h);N_GUARD::QAB1(H),XS(h)
- Tries
- Try
- B(A);CHECK,XR(a)
- Vars
- K(d);P-FLIGHT,P_SPINQ(f)::S(E)
- Refutation
- P(b);CHECK,XB(A)
- Try
- Q(H);XP(b)
- Threat
- QAR1(H)
- Vars
- Q(f);CHECK,OGATE,XS(E)::R1(G),XQ(f)
- Q(f);CHECK,OGATE,XR(D)::QAB1(H),XQ(f)
- K(d);N_SPINR(a),P-FLIGHT,P_SPINQ(f)::QAR2(H)
- S(h);N_GUARD::QAB1(H),XS(h)
- Refutation
- R(j);
- Try
- Q(H);CHECK
- Vars
- Q(f);XQ(H)::S(C)
- Refutation
- S(h);XQ(H)
- Try
- Q(H);CHECK,XP(g)
- Vars
- K(d);N_SPINR(a),P-FLIGHT,P_SPINQ(f)::QAR1(H)
- Q(f);XQ(H)::S(C)
- Refutation
- P(i);XQ(H)
- Try
- Q(H);XQ(f)
- Threat
- DUALS(3)
- Refutation
- S(e);XQ(H)
- Try
- Q(H);CHECK
- Vars
- Q(f);XQ(H)::S(C)
- Q(f);P_SPINQ(f)::S(C)
- Refutation
- S(h);P_SPINS(h)
- Try
- Actual
- Q(H);
- Threat
- QAR2(H)
- Vars
- Q(f);CHECK,P_SPINQ(f),XS(E)::S(C)
- Q(f);CHECK,N_GUARD,SBLOCK,XR(D)::QAR(H)+S(E)
- K(d);N_SPINR(a),P-FLIGHT,P_SPINQ(f)::S(E)
- Q(f);::QAB1(H)
- Q(f);::S(C)
- Q(f);P_PINS(E)::S(C)
- S(e);SBLOCK::R1(D)
- S(h);N_GUARD::QAB1(H),XS(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).