MESON Chess Problem Database
Problem Display
PID: 108432 (R3Bk1N/4n2K/3B4/1pp5/5n2/1R6/q7/8 w - - 0 1)
Holladay, Edgar Dinwiddie
4th Prize, Wurzburg-75 JT, 1949
#2
6 + 6
| 70 | American Chess Problemist | 1950 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb1+
- 2.Bg6#
- 1...Qxb3
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 1...Qb2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 1...Qc2+
- 2.Bg6#
- 1...Qd2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 1...Qe2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 1...Qf2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 1...Qg2
- 2.Bc6#
- 1...Qh2+
- 2.Bh5#
- 1...Se2
- 2.Sg6#
- 1...Sg2
- 2.Sg6#
- 1...Sd3
- 2.Sg6#
- 1...Sh3
- 2.Sg6#
- 1...Sd5
- 2.Sg6#
- 1...Sh5
- 2.Sg6#
- 1...Se6
- 2.Sg6#
- 1...Sg6
- 2.Sxg6#
- 1...b4
- 2.Ba4#
- 1...Qb1+
- Keys
- 1.Rg3!
- 1...Qb1+
- 2.Bg6#
- 1...Qf7+
- 2.Bxf7#
- 1...Qg8+
- 2.Rxg8#
- 1...Qc2+
- 2.Bg6#
- 1...Qh2+
- 2.Bh5#
- 1...Qxa8
- 2.Rg8#
- 1...Qa1
- 2.Rg8#
- 1...Qb3
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 1...Qc4
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 1...Qd5
- 2.Bc6#
- 1...Qe6
- 2.Bd7#
- 1...Qb2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 2.Rg8#
- 1...Qd2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 2.Rg8#
- 1...Qe2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 2.Rg8#
- 1...Qf2
- 2.Bxb5#
- 2.Bh5#
- 2.Bc6#
- 2.Bg6#
- 2.Bd7#
- 2.Bf7#
- 2.Rg8#
- 1...Qg2
- 2.Bc6#
- 1...Qa3
- 2.Rg8#
- 1...Qa4
- 2.Rg8#
- 1...Qa5
- 2.Rg8#
- 1...Qa6
- 2.Rg8#
- 1...Qa7
- 2.Rg8#
- 1...Se2
- 2.Sg6#
- 1...Sg2
- 2.Sg6#
- 1...Sd3
- 2.Sg6#
- 1...Sh3
- 2.Sg6#
- 1...Sd5
- 2.Sg6#
- 2.Rg8#
- 1...Sh5
- 2.Sg6#
- 1...Se6
- 2.Sg6#
- 2.Rg8#
- 1...Sg6
- 2.Sxg6#
- 1...b4
- 2.Ba4#
- 1...c4
- 2.Rg8#
- 1...Qb1+
- 1.Rg3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 12
- REMOVED MATES = 2
- Sets
- Q(a);CHECK,N_GUARD::R(D)+B(E)
- Q(a);N_GUARD::R(D)+B(E)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- P(c);OGATE::R(D)+B(E)
- Actual
- R(A);
- Vars
- Q(a);CHECK,N_GUARD::R(D)+B(E)
- Q(a);CHECK,N_GUARD::R(D)+B(E),XQ(a)
- Q(a);CHECK,N_GUARD::R1(A),XQ(a)
- Q(a);N_GUARD,XR(D)::R1(A)
- Q(a);N_GUARD::R1(A)
- Q(a);N_GUARD::R(D)+B(E)
- S(b);N_GUARD::S(F)
- S(b);N_GUARD::S(F),XS(b)
- P(c);OGATE::R(D)+B(E)
- P(d);S_CUTQ(a)::R1(A)
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).