MESON Chess Problem Database
Problem Display
PID: 161876 (Q1B3N1/2P5/4b2K/RN1npk2/4n2R/4p1P1/q7/b7 w - - 0 1)
Thomas, Georg
Thema Danicum, 1977
#2
9 + 8
| 15601 | Albrecht-Leiss-Degener Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Bd7
- 2.Bxd7#
- 1...Bxc8
- 2.Qxc8#
- 1...Sd2
- 2.Sd6#
- 1...Sf2
- 2.Sd6#
- 1...Sec3
- 2.Sd6#
- 1...Sxg3
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sef6
- 2.Sd6#
- 1...Sdc3
- 2.Sd4#
- 1...Sb4
- 2.Qxe4#
- 1...Sf4
- 2.g4#
- 1...Sb6
- 2.Qxe4#
- 1...Sdf6
- 2.Se7#
- 1...Sxc7
- 2.Qxe4#
- 1...Se7
- 2.Qxe4#
- 1...Bd7
- Tries
- 1.Qxd5?
- threat
- 2.Bxe6#
- 2.Rf4#
- 2.Qxe4#
- 1...Bxc8
- 2.Rf4#
- 1...Sxg3
- 2.Sd6#
- 2.Bxe6#
- 2.Qf3#
- 1...Qb1
- 2.Bxe6#
- 2.Rf4#
- 2.Qxe6#
- 1...Qc4
- 2.Bxe6#
- 2.Rf4#
- 1...Qc2
- 2.Bxe6#
- 2.Rf4#
- 2.Qxe6#
- 1...Qf2
- 2.Bxe6#
- 2.Qxe4#
- 2.Qxe6#
- 1...Qg2
- 2.Bxe6#
- 2.Rf4#
- 2.Qxe6#
- 1...Qh2
- 2.Bxe6#
- 2.Qxe4#
- 2.Qxe6#
- 1...Qa4
- 2.Bxe6#
- 2.Rf4#
- 2.Qxe6#
- 1...Bd7
- 2.Bxd7#
- 2.Rf4#
- 1...Sd2
- 2.Sd6#
- 2.Bxe6#
- 2.Rf4#
- 1...Sf2
- 2.Sd6#
- 2.Bxe6#
- 2.Rf4#
- 2.Qf3#
- 1...Sc3
- 2.Sd4#
- 2.Sd6#
- 2.Bxe6#
- 2.Rf4#
- 2.Qf3#
- 1...Sc5
- 2.Sd6#
- 2.Rf4#
- 2.Qf3#
- 1...Sg5
- 2.Sd6#
- 2.Rf4#
- 1...Sd6
- 2.Sxd6#
- 2.Bxe6#
- 2.Rf4#
- 2.Qf3#
- 1...Sf6
- 2.Sd6#
- 2.Se7#
- 2.Bxe6#
- 2.Rf4#
- 2.Qf3#
- 1...Qxd5!
- threat
- 1.Qxd5?
- Keys
- 1.Qc6!
- threat
- 2.Bxe6#
- 2.Qxe6#
- 1...Bxc8
- 2.Qg6#
- 1...Sxc7
- 2.Qxe4#
- 1...Bd7
- 2.Bxd7#
- 2.Qxd7#
- 2.Qg6#
- 1...Sc5
- 2.Sd6#
- 1...Sg5
- 2.Sd6#
- 1...Sd6
- 2.Sxd6#
- 1...Sdc3
- 2.Sd4#
- 1...Sb4
- 2.Qxe4#
- 1...Sf4
- 2.g4#
- 1...Sb6
- 2.Qxe4#
- 1...Sdf6
- 2.Se7#
- 1...Se7
- 2.Qxe4#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- B(h);OGATEB::B(H),XB(h)
- B(h);N_SPINB(h),OGATE,XB(H)::QAB(G),XB(h)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD,XP(A)::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(e);S_CUTB(a),S_CUTP(f)::S(D)
- S(e);OGATE::QAB1(G),XS(d)
- S(e);SBLOCK::P(A)
- S(e);N_GUARD,SBLOCK::S(I)
- S(e);OGATE,XP(F)::QAB1(G),XS(d)
- Tries
- Try
- Q(G);P_PINP(f),XS(e)
- Threat
- DUALS(3)
- Vars
- B(h);N_SPINB(h),XB(H)::R1(B)
- Refutation
- Q(b);N_SPINP(f),XQ(G)
- Try
- Actual
- Q(G);
- Threat
- DUALS(2)
- Vars
- B(h);N_SPINB(h),OGATE,XB(H)::QAB1(G)
- S(e);OGATE,XP(F)::QAB1(G),XS(d)
- S(d);N_GUARD::S(D)
- S(d);N_GUARD::S(D),XS(d)
- S(e);S_CUTB(a),S_CUTP(f)::S(D)
- S(e);OGATE::QAB1(G),XS(d)
- S(e);SBLOCK::P(A)
- S(e);N_GUARD,SBLOCK::S(I)
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).