MESON Chess Problem Database
Problem Display
PID: 156195 (1b6/5K2/1n2p3/2P1kp2/3nPp2/3P4/1r1N4/Q7 w - - 0 1)
Sheldon, Alfred King
BCPS, 1919
#2
6 + 8
| 15351 | SCPF/BCPS Black Books | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sf3#
- 1...Ra2
- 2.Sf3#
- 1...Rc2
- 2.Sf3#
- 1...Rb3
- 2.Sf3#
- 1...Rb4
- 2.Sf3#
- 1...Rb5
- 2.Sf3#
- 1...Sc2
- 2.Sf3#
- 1...Se2
- 2.Sf3#
- 1...Sb3
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Sb5
- 2.Sf3#
- 1...Sc6
- 2.Sf3#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...Rb1
- Tries
- 1.Qh1?
- threat
- 2.Qh8#
- 1...fxe4
- 2.Qxe4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...f3!
- threat
- 1.Qh1?
- Keys
- 1.Qa8!
- threat
- 2.Qxb8#
- 1...Sxa8
- 2.Sc4#
- 1...fxe4
- 2.Qxe4#
- 1...Sc2
- 2.Sf3#
- 1...Se2
- 2.Sf3#
- 1...Sb3
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Sb5
- 2.Sf3#
- 1...Sc6
- 2.Sf3#
- 1...Bd6
- 2.Qh8#
- 1...Ba7
- 2.Qh8#
- 1...Bc7
- 2.Qh8#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd5
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 6
- Sets
- R(a);P_SPINS(b)::S(B)
- S(b);N_GUARD,P_SPINR(a)::S(B)
- S(b);N_GUARD,P_SPINR(a)::S(B),XS(b)
- S(f);N_GUARD::S(B)
- S(f);N_GUARD::S(B),XS(f)
- Tries
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- P(e);OGATE,XP(D)::QAR1(A),XP(e)
- S(f);N_GUARD::S(B)
- Refutation
- P(c);
- Try
- Actual
- Q(A);
- Threat
- QAB(A),XB(h)
- Vars
- S(f);N_GUARD,XQ(A)::S(B)
- P(e);OGATE,XP(D)::QAR1(A),XP(e)
- S(b);N_GUARD::S(B)
- S(b);N_GUARD::S(B),XS(b)
- B(h);OGATE::QAB(A)
- S(f);N_GUARD::S(B)
- S(f);N_GUARD::S(B),XS(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).