MESON Chess Problem Database
Problem Display
PID: 175818 (8/1QN1p3/1np1PN2/2P1k2b/8/2p1Bp2/2BP1K2/8 w - - 0 1)
Varian, E
Philadelphia Times, 1898
#2
9 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Bf7
- 2.Sg4#
- 1...Be8
- 2.Sg4#
- 1...Sa4
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...exf6
- 2.d4#
- 1...Bg4
- Tries
- 1.Qa6?
- 1...cxd2
- 2.Qa1#
- 1...exf6
- 2.d4#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Bf7
- 2.Sg4#
- 1...Be8
- 2.Sg4#
- 1...Sa4
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...Kxf6!
- 1...cxd2
- 1.Qc8?
- 1...Kxf6
- 2.Qh8#
- 1...Sxc8
- 2.Sd7#
- 1...exf6
- 2.d4#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Bf7
- 2.Sg4#
- 1...Be8
- 2.Sg4#
- 1...Sa4
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...cxd2!
- 1...Kxf6
- 1.Qxb6?
- threat
- 2.Sd7#
- 1...exf6
- 2.d4#
- 1...Be8
- 2.Sg4#
- 1...Kxf6!
- threat
- 1.Qa7?
- 1...cxd2
- 2.Qa1#
- 1...exf6
- 2.d4#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Bf7
- 2.Sg4#
- 1...Be8
- 2.Sg4#
- 1...Sa4
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...Kxf6!
- 1...cxd2
- 1.Qb8?
- 1...Kxf6
- 2.Qh8#
- 1...exf6
- 2.d4#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Bf7
- 2.Sg4#
- 1...Be8
- 2.Sg4#
- 1...Sa4
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sa8
- 2.Sd7#
- 1...Sc8
- 2.Sd7#
- 1...cxd2!
- 1...Kxf6
- 1.Qa6?
- Keys
- 1.Qa8!
- 1...Kxf6
- 2.Qh8#
- 1...Sxa8
- 2.Sd7#
- 1...cxd2
- 2.Qa1#
- 1...exf6
- 2.d4#
- 1...Bg4
- 2.Sxg4#
- 1...Bg6
- 2.Sg4#
- 1...Bf7
- 2.Sg4#
- 1...Be8
- 2.Sg4#
- 1...Sa4
- 2.Sd7#
- 1...Sc4
- 2.Sd7#
- 1...Sd5
- 2.Sd7#
- 1...Sd7
- 2.Sxd7#
- 1...Sc8
- 2.Sd7#
- 1...Kxf6
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(d);N_GUARD::S(G),XB(d)
- B(d);N_GUARD::S(G)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- P(g);SBLOCK,XS(G)::P(B)
- Tries
- Try
- Q(H);
- Vars
- P(a);OGATEB,XP(B)::QAB(H)
- P(g);SBLOCK,XS(G)::P(B)
- B(d);N_GUARD::S(G),XB(d)
- B(d);N_GUARD::S(G)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- K(c);S_FLIGHT,XS(G)
- Try
- Q(H);
- Vars
- K(c);OGATEB,S_FLIGHT,XS(G)::QAB(H)
- S(e);N_GUARD,XQ(H)::S(G)
- P(g);SBLOCK,XS(G)::P(B)
- B(d);N_GUARD::S(G),XB(d)
- B(d);N_GUARD::S(G)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- P(a);XP(B)
- Try
- Q(H);XS(e)
- Threat
- S(G)
- Vars
- P(g);SBLOCK,XS(G)::P(B)
- B(d);N_GUARD::S(G)
- Refutation
- K(c);S_FLIGHT,XS(G)
- Try
- Q(H);
- Vars
- P(a);OGATEB,XP(B)::QAB(H)
- P(g);SBLOCK,XS(G)::P(B)
- B(d);N_GUARD::S(G),XB(d)
- B(d);N_GUARD::S(G)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- K(c);S_FLIGHT,XS(G)
- Try
- Q(H);
- Vars
- K(c);OGATEB,S_FLIGHT,XS(G)::QAB(H)
- P(g);SBLOCK,XS(G)::P(B)
- B(d);N_GUARD::S(G),XB(d)
- B(d);N_GUARD::S(G)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
- Refutation
- P(a);XP(B)
- Try
- Actual
- Q(H);
- Vars
- K(c);OGATEB,S_FLIGHT,XS(G)::QAB(H)
- S(e);N_GUARD,XQ(H)::S(G)
- P(a);OGATEB,XP(B)::QAB(H)
- P(g);SBLOCK,XS(G)::P(B)
- B(d);N_GUARD::S(G),XB(d)
- B(d);N_GUARD::S(G)
- S(e);N_GUARD::S(G)
- S(e);N_GUARD::S(G),XS(e)
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).