MESON Chess Problem Database
Problem Display
PID: 142100 (3nKB2/1p3p2/1Pp1Pkp1/Q1N2bRP/P4n1P/8/5N2/b4R2 w - - 0 1)
Allen, Jeff W
British Chess Magazine 06. Ty., 1890
#2
12 + 9
SOLUTION
- SOUND
- Sets
- 1...Bc3
- 2.Qxc3#
- 1...Bb1
- 2.Sg4#
- 1...Bc2
- 2.Sg4#
- 1...Bd3
- 2.Sg4#
- 1...Bh3
- 2.Sfe4#
- 1...Be4
- 2.Sfxe4#
- 2.Sg4#
- 1...Bg4
- 2.Sfe4#
- 2.Sxg4#
- 1...Bxe6
- 2.Sfe4#
- 2.Sce4#
- 1...Se2
- 2.Sg4#
- 1...Sg2
- 2.Sg4#
- 1...Sd3
- 2.Sg4#
- 1...Sh3
- 2.Sg4#
- 1...Sd5
- 2.Sg4#
- 1...Sxh5
- 2.Sg4#
- 1...Sfxe6
- 2.Sg4#
- 2.Sd7#
- 1...Sdxe6
- 2.Sd7#
- 1...gxh5
- 2.Bg7#
- 1...fxe6
- 2.Sd7#
- 1...Bc3
- Tries
- 1.Qe1?
- threat
- 2.Sd7#
- 2.Qxa1#
- 1...Bxe6
- 2.Sfe4#
- 2.Sce4#
- 2.Qxa1#
- 1...Sfxe6
- 2.Sg4#
- 2.Sd7#
- 1...Sdxe6
- 2.Sd7#
- 1...fxe6
- 2.Sd7#
- 1...Se2
- 2.Sg4#
- 1...Bb2
- 2.Sd7#
- 1...Bc3
- 2.Sd7#
- 2.Qxc3#
- 1...Bd4
- 2.Sd7#
- 1...Bb1
- 2.Sg4#
- 2.Sd7#
- 1...Be4
- 2.Sfxe4#
- 2.Sg4#
- 2.Qxa1#
- 1...Sd3
- 2.Sg4#
- 2.Sd7#
- 1...Sd5
- 2.Sg4#
- 2.Sd7#
- 1...Be5!
- threat
- 1.h6?
- threat
- 2.Bg7#
- 1...Sfxe6
- 2.Sg4#
- 2.Sd7#
- 1...Sdxe6
- 2.Sd7#
- 1...Sh5
- 2.Sg4#
- 1...Ke5!
- threat
- 1.Qe1?
- Keys
- 1.Qd2!
- 1...Ke5
- 2.Sg4#
- 1...Bxe6
- 2.Sfe4#
- 2.Sce4#
- 2.Qxd8#
- 1...Sxh5
- 2.Sg4#
- 1...Sfxe6
- 2.Sg4#
- 2.Sd7#
- 1...Sdxe6
- 2.Sd7#
- 1...gxh5
- 2.Bg7#
- 1...fxe6
- 2.Sd7#
- 1...Bb2
- 2.Qxb2#
- 1...Bc3
- 2.Qxc3#
- 1...Bd4
- 2.Qxd4#
- 1...Be5
- 2.Qxd8#
- 1...Bb1
- 2.Sg4#
- 2.Qxd8#
- 1...Bc2
- 2.Sg4#
- 2.Qxd8#
- 1...Bd3
- 2.Sg4#
- 1...Bh3
- 2.Sfe4#
- 2.Qxd8#
- 1...Be4
- 2.Sfxe4#
- 2.Sg4#
- 2.Qxd8#
- 1...Bg4
- 2.Sfe4#
- 2.Sxg4#
- 2.Qxd8#
- 1...Se2
- 2.Sg4#
- 1...Sg2
- 2.Sg4#
- 1...Sd3
- 2.Sg4#
- 1...Sh3
- 2.Sg4#
- 1...Sd5
- 2.Sg4#
- 1...Ke5
- 1.Qd2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- B(a);N_GUARD::QAB(E),XB(a)
- B(c);N_GUARD::S(B)
- S(b);S_CUTB(c)::S(B)
- S(b);S_CUTB(c),XP(H)::S(B)
- S(i);SBLOCK,XP(J)::S(F)
- P(f);XP(H)::B(L)
- P(h);SBLOCK,XP(J)::S(F)
- Tries
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- S(i);XP(J)::S(F)
- P(h);XP(J)::S(F)
- S(b);S_CUTB(c)::S(B)
- B(a);::S(F)
- Refutation
- B(a);
- Try
- P(H);
- Threat
- B(L)
- Vars
- S(i);SBLOCK,XP(J)::S(F)
- S(b);S_CUTB(c)::S(B)
- Refutation
- K(e);P_SPINB(c),S_FLIGHT
- Try
- Actual
- Q(E);
- Vars
- K(e);P_SPINB(c),S_FLIGHT::S(B)
- S(b);S_CUTB(c),XP(H)::S(B)
- S(i);SBLOCK,XP(J)::S(F)
- P(f);XP(H)::B(L)
- P(h);SBLOCK,XP(J)::S(F)
- B(a);N_GUARD::QAB(E),XB(a)
- B(a);SBLOCK::QAB(E),XS(i)
- B(c);N_GUARD::S(B)
- S(b);S_CUTB(c)::S(B)
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).