MESON Chess Problem Database
Problem Display
PID: 51730 (8/2n3p1/2Q3K1/2npk2p/3R2pP/2P3P1/8/4N3 w - - 0 1)
von Holzhausen, Walther Freiherr
Deutsches Wochenschach, 1920
#2
7 + 7
SOLUTION
- SOUND
- Sets
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sa4
- 2.Sd3#
- 1...Se4
- 2.Sd3#
- 1...S5a6
- 2.Sd3#
- 1...S5e6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Sd7
- 2.Sd3#
- 1...Sb5
- 2.Qxd5#
- 1...S7a6
- 2.Qxd5#
- 1...S7e6
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...Sb3
- Tries
- 1.Qd7?
- 1...Sb3
- 2.Sd3#
- 1...Sd3
- 2.Sxd3#
- 1...Sa4
- 2.Sd3#
- 1...Se4
- 2.Sd3#
- 1...S5a6
- 2.Sd3#
- 1...S5e6
- 2.Sd3#
- 1...Sb7
- 2.Sd3#
- 1...Sb5
- 2.Qxd5#
- 1...S7a6
- 2.Qxd5#
- 1...S7e6
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...Sxd7!
- 1...Sb3
- 1.Qxc5?
- 1...Sb5
- 2.Qe7#
- 2.Qxd5#
- 1...Sa6
- 2.Qe7#
- 2.Qxd5#
- 1...Se6
- 2.Sd3#
- 2.Qxd5#
- 1...Sa8
- 2.Qe7#
- 2.Qxd5#
- 1...Se8
- 2.Qe7#
- 2.Qxd5#
- 1...Ke6!
- 1...Sb5
- 1.Qd7?
- Keys
- 1.Rd2!
- 1...Ke4
- 2.Re2#
- 1...Sb3
- 2.Re2#
- 1...Sd3
- 2.Re2#
- 1...Sa4
- 2.Re2#
- 1...Se4
- 2.Sd3#
- 1...S5a6
- 2.Re2#
- 1...S5e6
- 2.Re2#
- 1...Sb7
- 2.Re2#
- 1...Sd7
- 2.Re2#
- 1...Sb5
- 2.Qxd5#
- 1...S7a6
- 2.Qxd5#
- 1...S7e6
- 2.Qxd5#
- 1...Sa8
- 2.Qxd5#
- 1...Se8
- 2.Qxd5#
- 1...d4
- 2.cxd4#
- 1...Ke4
- 1.Rd2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- S(f);N_GUARD::QAR1(F),XP(c)
- Tries
- Try
- Q(F);
- Vars
- S(b);N_GUARD::S(A)
- S(b);N_GUARD::S(A),XS(b)
- S(f);N_GUARD::QAR1(F),XP(c)
- Refutation
- S(b);XQ(F)
- Try
- Q(F);P_PINP(c),XS(b)
- Refutation
- K(d);N_SPINP(c),P-FLIGHT
- Try
- Actual
- R(D);
- Vars
- K(d);P-FLIGHT,P_SPINP(c)::R(D)
- S(b);N_GUARD::R(D)
- S(b);N_GUARD,SBLOCK::S(A)
- S(f);N_GUARD::QAR1(F),XP(c)
- P(c);OGATE::P(B),XP(c)
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).