MESON Chess Problem Database
Problem Display
PID: 81506 (Q4B2/2pk1ppN/4p2q/8/4p3/8/KR6/8 w - - 0 1)
Allison, Christopher John
The Field, 1952
(First published on Sat Jan 5 1952)
#2
5 + 7
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Rxd2#
- 1...Qh1
- 2.Rd2#
- 1...Qh4
- 2.Rd2#
- 1...Qg6
- 2.Rd2#
- 1...Qxh7
- 2.Rd2#
- 1...c6
- 2.Rb7#
- 1...g5
- 2.Rd2#
- 1...g6
- 2.Sf6#
- 1...Qd2
- Tries
- 1.Ba3?
- threat
- 2.Sf8#
- 1...Qxh7
- 2.Rd2#
- 1...c6
- 2.Rb7#
- 1...g5
- 2.Rd2#
- 1...g6
- 2.Sf6#
- 1...c5!
- threat
- 1.Qc6+?
- 1...Kc8
- 2.Qe8#
- 1...Kd8
- 2.Rb8#
- 1...Kxc6!
- 1...Kc8
- 1.Qa4+?
- 1...Kc8
- 2.Qe8#
- 1...Kd8
- 2.Rb8#
- 1...c6!
- 1...Kc8
- 1.Ba3?
- Keys
- 1.Bc5!
- threat
- 2.Sf8#
- 1...Qxh7
- 2.Rd2#
- 1...c6
- 2.Rb7#
- 1...g5
- 2.Rd2#
- 1...g6
- 2.Sf6#
- threat
- 1.Bc5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(c);N_GUARD,P_PINR(B)::R(B),XQ(c)
- Q(c);N_GUARD::R(B)
- Q(c);N_GUARD,XS(C)::R(B)
- P(d);OGATEB,SBLOCK::R(B)
- P(g);S_CUTQ(c)::R(B)
- P(g);N_GUARD,S_CUTQ(c)::S(C)
- Tries
- Try
- B(E);
- Threat
- S(C)
- Vars
- Q(c);N_GUARD,XS(C)::R(B)
- P(d);OGATEB,SBLOCK::R(B)
- P(g);S_CUTQ(c)::R(B)
- P(g);N_GUARD,S_CUTQ(c)::S(C)
- Refutation
- P(d);
- Try
- Q(D);CHECK
- Vars
- K(e);OGATE,P_SPINP(d),S_FLIGHT::QAR2(D)
- K(e);P-FLIGHT::R(B)
- Refutation
- K(e);S_FLIGHT,XQ(D)
- Try
- Q(D);CHECK
- Vars
- K(e);OGATE,S_FLIGHT::QAR2(D)
- K(e);P-FLIGHT::R(B)
- Refutation
- P(d);P_SPINP(d)
- Try
- Actual
- B(E);
- Threat
- S(C)
- Vars
- Q(c);N_GUARD,XS(C)::R(B)
- P(d);OGATEB,SBLOCK::R(B)
- P(g);S_CUTQ(c)::R(B)
- P(g);N_GUARD,S_CUTQ(c)::S(C)
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).