MESON Chess Problem Database
Problem Display
PID: 64165 (7Q/4N3/pn2P1P1/Rb2pBpP/5k1N/2p4p/2P2K2/8 w - - 0 1)
Fenner, A Jack
Chess, 1946
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Bf1
- 2.Qxe5#
- 1...Be2
- 2.Qxe5#
- 1...Bd3
- 2.Qxe5#
- 1...Ba4
- 2.Qxe5#
- 1...Bc4
- 2.Qxe5#
- 1...Bc6
- 2.Qxe5#
- 1...Bd7
- 2.Qxe5#
- 1...Be8
- 2.Qxe5#
- 1...Sa4
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...h2
- 2.Sg2#
- 1...e4
- 2.Qb8#
- 1...gxh4
- 2.Qh6#
- 1...g4
- 2.Qh6#
- 1...Bf1
- Tries
- 1.Rxb5?
- threat
- 2.Qxe5#
- 1...gxh4
- 2.Qh6#
- 1...g4
- 2.Qh6#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...e4
- 2.Qe5#
- 2.Qb8#
- 1...axb5!
- threat
- 1.Qg7?
- 1...gxh4
- 2.Qh6#
- 1...g4
- 2.Qh6#
- 1...Bf1
- 2.Qxe5#
- 1...Be2
- 2.Qxe5#
- 1...Bd3
- 2.Qxe5#
- 1...Ba4
- 2.Qxe5#
- 1...Bc4
- 2.Qxe5#
- 1...Bc6
- 2.Qxe5#
- 1...Bd7
- 2.Qxe5#
- 1...Be8
- 2.Qxe5#
- 1...Sa4
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...h2
- 2.Sg2#
- 1...e4!
- 1...gxh4
- 1.g7?
- threat
- 2.Shg6#
- 2.Seg6#
- 1...gxh4
- 2.Qh6#
- 1...g4
- 2.Qh6#
- 1...Be8!
- threat
- 1.Rxb5?
- Keys
- 1.Qf6!
- 1...gxh4
- 2.Qxh4#
- 1...Bf1
- 2.Qxe5#
- 1...Be2
- 2.Qxe5#
- 1...Bd3
- 2.Qxe5#
- 1...Ba4
- 2.Qxe5#
- 1...Bc4
- 2.Qxe5#
- 1...Bc6
- 2.Qxe5#
- 1...Bd7
- 2.Qxe5#
- 1...Be8
- 2.Qxe5#
- 1...Sa4
- 2.Sd5#
- 1...Sc4
- 2.Sd5#
- 1...Sd5
- 2.Sxd5#
- 1...Sd7
- 2.Sd5#
- 1...Sa8
- 2.Sd5#
- 1...Sc8
- 2.Sd5#
- 1...h2
- 2.Sg2#
- 1...e4
- 2.Bxh3#
- 1...g4
- 2.Bd3#
- 1...gxh4
- 1.Qf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(d);::QAB1(J),XP(e)
- S(h);N_GUARD::S(I)
- S(h);N_GUARD::S(I),XS(h)
- P(b);N_GUARD::S(C)
- P(e);OGATEB::QAB(J)
- P(f);OGATEB,XS(C)::QAB(J)
- P(f);OGATEB::QAB(J)
- Tries
- Try
- R(D);XB(d)
- Threat
- QAB1(J),XP(e)
- Vars
- P(f);OGATEB,XS(C)::QAB(J)
- P(f);OGATEB::QAB(J)
- S(h);N_GUARD::S(I)
- S(h);N_GUARD::S(I),XS(h)
- Refutation
- P(g);XR(D)
- Try
- Q(J);
- Vars
- P(f);OGATEB,XS(C)::QAB(J)
- P(f);OGATEB::QAB(J)
- B(d);::QAB1(J),XP(e)
- S(h);N_GUARD::S(I)
- S(h);N_GUARD::S(I),XS(h)
- P(b);N_GUARD::S(C)
- Refutation
- P(e);
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- P(f);OGATEB,XS(C)::QAB(J)
- P(f);OGATEB::QAB(J)
- Refutation
- B(d);
- Try
- Actual
- Q(J);
- Vars
- P(f);OGATE,XS(C)::QAR2(J),XP(f)
- B(d);::QAB1(J),XP(e)
- S(h);N_GUARD::S(I)
- S(h);N_GUARD::S(I),XS(h)
- P(b);N_GUARD::S(C)
- P(e);SBLOCK::QAR(J)+B(E),XP(b)
- P(f);SBLOCK::QAR(J)+B(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).