MESON Chess Problem Database
Problem Display
PID: 6892 (k7/2B5/1Kp1PP2/2p1Q3/1p6/3r4/BP5p/R6q w - - 0 1)
Mansfield, Comins
Probleme, 1934
#2
8 + 7
| 3550 | Complete Mansfield/II | 1997 |
SOLUTION
- SOUND
- Sets
- 1...Qg2
- 2.Bb3#
- 1...Qf3
- 2.Bb3#
- 1...Qe4
- 2.Bb3#
- 1...Qd5
- 2.Bb3#
- 1...Rd1
- 2.Bb1#
- 1...Rd2
- 2.Bb1#
- 1...Rd4
- 2.Bb1#
- 1...Rd5
- 2.Bb1#
- 1...Rd6
- 2.Bb1#
- 1...Rd7
- 2.Bb1#
- 1...Rd8
- 2.Bb1#
- 1...b3
- 2.Bb1#
- 1...c4
- 2.Qa5#
- 1...Qg2
- Tries
- 1.Bd5+?
- 1...Qxa1
- 2.Bxc6#
- 1...Ra3!
- 1...Qxa1
- 1.Qd6?
- 1...Qxa1
- 2.Qxc6#
- 1...Rxd6
- 2.Bb1#
- 1...Ra3
- 2.Qf8#
- 2.Qd8#
- 1...Qg2
- 2.Bb3#
- 1...Qf3
- 2.Bb3#
- 1...Qe4
- 2.Bb3#
- 1...Qd5
- 2.Bb3#
- 1...Qb1
- 2.Qxc6#
- 1...Qc1
- 2.Qxc6#
- 1...Qd1
- 2.Qxc6#
- 1...Qe1
- 2.Qxc6#
- 1...Qf1
- 2.Qxc6#
- 1...Qg1
- 2.Qxc6#
- 1...Rd1
- 2.Bb1#
- 1...Rd2
- 2.Bb1#
- 1...Rb3
- 2.Qf8#
- 2.Qd8#
- 1...Rc3
- 2.Qf8#
- 2.Qd8#
- 1...Re3
- 2.Qf8#
- 2.Qd8#
- 1...Rf3
- 2.Qf8#
- 2.Qxc6#
- 2.Qd8#
- 1...Rg3
- 2.Qf8#
- 2.Qd8#
- 1...Rh3
- 2.Qf8#
- 2.Qd8#
- 1...Rd4
- 2.Bb1#
- 1...Rd5
- 2.Bb1#
- 2.Qxc6#
- 1...b3
- 2.Bb1#
- 1...c4!
- 1...Qxa1
- 1.Qxc5?
- threat
- 2.Qa5#
- 1...Ra3
- 2.Qf8#
- 1...Qd5
- 2.Bb3#
- 1...Rd5
- 2.Bb1#
- 2.Qxc6#
- 1...Qg1!
- threat
- 1.Bd5+?
- Keys
- 1.Qd5!
- 1...Qxd5
- 2.Bb3#
- 1...Qxa1
- 2.Qxc6#
- 1...Rxd5
- 2.Bb1#
- 1...cxd5
- 2.Bxd5#
- 1...Ra3
- 2.Qd8#
- 1...Qg2
- 2.Bb3#
- 1...Qf3
- 2.Bb3#
- 1...Qe4
- 2.Bb3#
- 1...Qb1
- 2.Qxc6#
- 1...Qc1
- 2.Qxc6#
- 1...Qd1
- 2.Qxc6#
- 1...Qe1
- 2.Qxc6#
- 1...Qf1
- 2.Qxc6#
- 1...Qg1
- 2.Qxc6#
- 1...Rd1
- 2.Bb1#
- 1...Rd2
- 2.Bb1#
- 1...Rb3
- 2.Qd8#
- 1...Rc3
- 2.Qd8#
- 1...Re3
- 2.Qd8#
- 1...Rf3
- 2.Qxc6#
- 2.Qd8#
- 1...Rg3
- 2.Qd8#
- 1...Rh3
- 2.Qd8#
- 1...Rd4
- 2.Bb1#
- 1...b3
- 2.Bb1#
- 1...c4
- 2.Qa5#
- 1...Qxd5
- 1.Qd5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 14
- REMOVED MATES = 3
- Sets
- Q(a);N_GUARD::R(A)+B(B)
- R(c);N_GUARD::R(A)+B(B)
- P(d);S_CUTR(c)::R(A)+B(B)
- P(e);OGATE::QAR(D)
- Tries
- Try
- B(B);CHECK,P_PINP(f)
- Vars
- Q(a);XR(A)::B(B),XP(f)
- Refutation
- R(c);P_SPINR(c)
- Try
- Q(D);
- Vars
- Q(a);N_GUARD,XR(A)::QAB(D),XP(f)
- R(c);N_GUARD,XQ(D)::R(A)+B(B)
- Q(a);N_GUARD::R(A)+B(B)
- Q(a);N_GUARD::QAB(D),XP(f)
- R(c);N_GUARD::R(A)+B(B)
- P(d);S_CUTR(c)::R(A)+B(B)
- Refutation
- P(e);
- Try
- Q(D);XP(e)
- Threat
- QAR(D)
- Vars
- R(c);N_GUARD::QAR(D)
- Q(a);N_GUARD::R(A)+B(B)
- Refutation
- Q(a);P_PINQ(D)
- Try
- Actual
- Q(D);P_PINP(f)
- Vars
- Q(a);N_GUARD,N_SPINP(f),XQ(D)::R(A)+B(B)
- Q(a);N_GUARD,XR(A)::QAB(D),XP(f)
- R(c);N_GUARD,N_SPINP(f),XQ(D)::R(A)+B(B)
- P(f);N_SPINP(f),OGATE,XQ(D)::R(A)+B(B),DCHECK,XP(f)
- R(c);N_GUARD::QAR(D)
- Q(a);N_GUARD::R(A)+B(B)
- Q(a);N_GUARD::QAB(D),XP(f)
- R(c);N_GUARD::R(A)+B(B)
- P(d);S_CUTR(c)::R(A)+B(B)
- P(e);OGATE::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).