MESON Chess Problem Database
Problem Display
PID: 137157 (4Q3/8/R7/3pppp1/2q5/5PPk/5P2/5bKB w - - 0 1)
Heydon, Joseph Kentigern
Australasian Chess Magazine, 1919
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qe2
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qb3
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qd3
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qb5
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qxa6
- 2.Qh5#
- 1...Qc1
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qc2
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qc3
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qc5
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qc6
- 2.Qh5#
- 1...Qc7
- 2.Rh6#
- 2.Qh5#
- 1...Qc8
- 2.Rh6#
- 2.Qh5#
- 1...Be2
- 2.Bg2#
- 1...Bg2
- 2.Bxg2#
- 1...Bd3
- 2.Bg2#
- 1...d4
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...e4
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...f4
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...g4
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qa2
- Tries
- 1.g4?
- threat
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Kh4
- 2.Rh6#
- 2.Qh5#
- 2.Qh8#
- 1...Qxa6
- 2.Qh5#
- 1...Qc6
- 2.Qh5#
- 1...Qc7
- 2.Rh6#
- 2.Qh5#
- 1...Qc8
- 2.Rh6#
- 2.Qh5#
- 1...Qxg4+!
- threat
- 1.g4?
- Keys
- 1.Qb5!
- 1...Qxb5
- 2.Rh6#
- 1...Qb4
- 2.Qxf1#
- 1...Qa2
- 2.Rh6#
- 2.Qxf1#
- 1...Qe2
- 2.Rh6#
- 1...Qb3
- 2.Rh6#
- 2.Qxf1#
- 1...Qd3
- 2.Rh6#
- 1...Qc1
- 2.Rh6#
- 1...Qc2
- 2.Rh6#
- 2.Qxf1#
- 1...Qc3
- 2.Rh6#
- 2.Qxf1#
- 1...Qa4
- 2.Qxf1#
- 1...Qd4
- 2.Qxf1#
- 1...Qe4
- 2.Qxf1#
- 1...Qf4
- 2.Qxf1#
- 1...Qg4
- 2.Qxf1#
- 1...Qh4
- 2.Qxf1#
- 1...Qc5
- 2.Rh6#
- 2.Qxf1#
- 1...Qc6
- 2.Qxf1#
- 1...Qc7
- 2.Rh6#
- 2.Qxf1#
- 1...Qc8
- 2.Rh6#
- 2.Qxf1#
- 1...Be2
- 2.Bg2#
- 1...Bg2
- 2.Bxg2#
- 1...Bd3
- 2.Bg2#
- 1...d4
- 2.Rh6#
- 1...e4
- 2.Rh6#
- 1...f4
- 2.Rh6#
- 1...g4
- 2.Rh6#
- 1...Qxb5
- 1.Qb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 15
- REMOVED MATES = 1
- Sets
- Q(c);N_GUARD,XR(F)::QAR2(G)
- Q(c);N_GUARD::QAR2(G)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- Tries
- Try
- P(E);
- Threat
- DUALS(3)
- Vars
- Q(c);XR(F)::QAR2(G)
- Q(c);::QAR2(G)
- Refutation
- Q(c);CHECK,XP(E)
- Try
- Actual
- Q(G);
- Vars
- Q(c);N_GUARD,XQ(G)::R(F)
- Q(c);OGATE::QAB(G),XB(a)
- Q(c);N_GUARD::R(F)
- Q(c);OGATE,P_PINP(C)::QAB(G),XB(a)
- Q(c);OGATE,P_PINP(E)::QAB(G),XB(a)
- B(a);N_GUARD::B(B)
- B(a);N_GUARD::B(B),XB(a)
- P(d);S_CUTQ(c)::R(F)
- P(e);S_CUTQ(c)::R(F)
- P(f);S_CUTQ(c)::R(F)
- P(g);S_CUTQ(c)::R(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).