MESON Chess Problem Database
Problem Display
PID: 207051 (8/1q1B1p1n/3p4/1Ppkp2N/2b5/1nK2P2/8/2Q5 w - - 0 1)
Gardner, John Carey
New York Clipper, 1864
#2
6 + 9
| 6490 | yacpdb | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sg5
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sf8
- 2.Sf6#
- 1...Sg5
- Tries
- 1.Qf4?
- threat
- 2.Qxc4#
- 2.Qe4#
- 2.Qxf7#
- 1...Qxb5
- 2.Qe4#
- 2.Qxf7#
- 1...Qxd7
- 2.Qxc4#
- 1...Bxb5
- 2.Qe4#
- 2.Qxf7#
- 1...Bd3
- 2.Qxf7#
- 1...Bf1
- 2.Qe4#
- 2.Qxf7#
- 1...Be2
- 2.Qe4#
- 2.Qxf7#
- 1...Sd2
- 2.Qxf7#
- 1...Sd4
- 2.Qe4#
- 1...Sa5
- 2.Qe4#
- 2.Qxf7#
- 1...Sg5
- 2.Sf6#
- 2.Qxc4#
- 1...Sf6
- 2.Sxf6#
- 2.Qxc4#
- 1...Sf8
- 2.Sf6#
- 2.Qxc4#
- 2.Qe4#
- 1...e4
- 2.Qxe4#
- 2.Qf5#
- 2.fxe4#
- 1...f5
- 2.Qxc4#
- 1...f6
- 2.Qxc4#
- 2.Qe4#
- 1...exf4!
- threat
- 1.Qf4?
- Keys
- 1.Qg5!
- threat
- 2.Sf4#
- 1...Sxg5
- 2.Sf6#
- 1...f5
- 2.Qg8#
- threat
- 1.Qg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- S(i);N_GUARD::S(E)
- S(i);N_GUARD::S(E),XS(i)
- Tries
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- Q(g);XB(F)::QAB1(A),XB(b)
- B(b);::QAB(A),XP(h)
- S(a);::QAB(A),XP(h)
- S(a);::QAB1(A)
- P(h);::QAB1(A),XB(b)
- Refutation
- P(e);XQ(A)
- Try
- Actual
- Q(A);P_PINP(e)
- Threat
- S(E)
- Vars
- S(i);N_GUARD,N_SPINP(e),XQ(A)::S(E)
- P(h);N_SPINP(e),OGATEB::QAB(A)
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).