MESON Chess Problem Database
Problem Display
PID: 68295 (n4KN1/4p2k/1p4p1/1r1Q4/8/6p1/bBR5/1B6 w - - 0 1)
Sydenham, Colin Peter
Comm., The Problemist, 1982/I
#2
6 + 8
| 56 | The Problemist | 2006 |
| 15513 | Selected Chess Problems of Colin Sydenham | 2015 |
| 56 | The Problemist | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2
- 2.Qh1#
- 1...Rb3
- 2.Qh1#
- 2.Qf7#
- 1...Bxb1
- 2.Qf7#
- 1...g5
- 2.Rh2#
- 1...e5
- 2.Qh1#
- 1...e6
- 2.Qd7#
- 1...Rxb2
- Tries
- 1.Bxa2?
- threat
- 2.Qf7#
- 1...Rxb2
- 2.Qh1#
- 1...e5
- 2.Qh1#
- 1...e6
- 2.Qd7#
- 1...Rxd5!
- threat
- 1.Re2?
- threat
- 2.Rxe7#
- 1...Rxb2
- 2.Qh1#
- 2.Qh5#
- 1...e5
- 2.Qh1#
- 1...e6
- 2.Qd7#
- 1...Bxd5!
- threat
- 1.Qe5?
- threat
- 2.Qg7#
- 2.Qh8#
- 1...Rxb2
- 2.Qg7#
- 1...g5
- 2.Rh2#
- 2.Qg7#
- 1...Rxe5!
- threat
- 1.Bxa2?
- Keys
- 1.Rc6!
- threat
- 2.Bxg6#
- 1...Rxb2
- 2.Qh5#
- 1...Bxb1
- 2.Qf7#
- 1...e5
- 2.Qh1#
- 1...e6
- 2.Qd7#
- threat
- 1.Rc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- R(c);N_GUARD,XB(B)::QAR(D)
- B(a);N_GUARD,XB(A)::QAR2(D)
- P(e);::B(A)+R(C),DCHECK
- P(f);S_CUTR(c)::QAR(D)
- P(f);OGATEB::QAR(D)
- Tries
- Try
- B(A);XB(a)
- Threat
- QAR2(D)
- Vars
- R(c);N_GUARD,XB(B)::QAR(D)
- P(f);S_CUTR(c)::QAR(D)
- P(f);OGATEB::QAR(D)
- Refutation
- R(c);XQ(D)
- Try
- R(C);P_PINP(e)
- Threat
- R(C),XP(f)
- Vars
- P(f);S_CUTR(c)::QAR(D)
- P(f);OGATEB::QAR(D)
- Refutation
- B(a);XQ(D)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- R(c);XB(B)::QAR1(D)
- Refutation
- R(c);XQ(D)
- Try
- Actual
- R(C);P_PINP(e)
- Threat
- B(A),XP(e)
- Vars
- R(c);N_GUARD,XB(B)::QAR2(D)
- B(a);N_GUARD,N_SPINP(e),XB(A)::QAR2(D)
- P(f);S_CUTR(c)::QAR(D)
- P(f);OGATEB::QAR(D)
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).