MESON Chess Problem Database
Problem Display
PID: 249605 (2R1N3/Rp6/1p4Q1/1kbp4/4p3/4Pp2/N1P4K/8 w - - 0 1)
von Gottschall, Hermann
Deutsche Schachzeitung, 1889
#2
8 + 7
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kc4
- 2.Sd6#
- 1...Bxe3
- 2.Sd6#
- 1...Bd4
- 2.Sd6#
- 1...Bd6+
- 2.Sxd6#
- 1...Kc4
- Tries
- 1.Qxe4?
- threat
- 2.Sc3#
- 2.Qd3#
- 2.Qa4#
- 1...Bd6+
- 2.Sxd6#
- 1...d4
- 2.Qd3#
- 1...Bb4
- 2.Qd3#
- 2.Qxb4#
- 1...Bd4
- 2.Sd6#
- 2.Qd3#
- 1...dxe4!
- threat
- 1.Qf5?
- 1...Bd6+
- 2.Sxd6#
- 1...Kc4
- 2.Sd6#
- 1...Bxe3
- 2.Sd6#
- 2.Qd7#
- 2.c4#
- 1...Bb4
- 2.Qd7#
- 2.c4#
- 1...Ba3
- 2.Qd7#
- 2.c4#
- 1...Bd4
- 2.Sd6#
- 2.Qd7#
- 2.c4#
- 1...Be7
- 2.Qd7#
- 2.c4#
- 1...Bf8
- 2.Qd7#
- 2.c4#
- 1...d4
- 2.Sd6#
- 1...f2!
- 1...Bd6+
- 1.Qg1?
- threat
- 2.Qf1#
- 1...Bd6+
- 2.Sxd6#
- 1...Kc4
- 2.Sd6#
- 2.Qf1#
- 1...d4!
- threat
- 1.Qg4?
- 1...Bd6+
- 2.Sxd6#
- 1...Kc4
- 2.Sd6#
- 1...Bxe3
- 2.Sd6#
- 2.Qd7#
- 1...Bb4
- 2.Qd7#
- 1...Ba3
- 2.Qd7#
- 1...Bd4
- 2.Sd6#
- 2.Qd7#
- 1...Be7
- 2.Qd7#
- 1...Bf8
- 2.Qd7#
- 1...f2
- 2.Qe2#
- 1...d4!
- 1...Bd6+
- 1.Qg5?
- 1...Bd6+
- 2.Sxd6#
- 1...Kc4
- 2.Sd6#
- 1...Bxe3
- 2.Sd6#
- 2.c4#
- 1...Bb4
- 2.c4#
- 1...Ba3
- 2.c4#
- 1...Bd4
- 2.Sd6#
- 2.c4#
- 1...Be7
- 2.c4#
- 1...Bf8
- 2.c4#
- 1...d4
- 2.Sd6#
- 1...f2!
- 1...Bd6+
- 1.Qxb6+?
- 1...Kc4
- 2.Sd6#
- 2.Ra4#
- 2.Rxc5#
- 2.Qxc5#
- 2.Qb3#
- 2.Qb4#
- 1...Bxb6
- 2.Sd6#
- 1...Kxb6!
- 1...Kc4
- 1.Qc6+?
- 1...Kc4
- 2.Sd6#
- 2.Ra4#
- 2.Qa4#
- 1...bxc6!
- 1...Kc4
- 1.Qe6?
- 1...Bd6+
- 2.Sxd6#
- 1...Kc4
- 2.Sd6#
- 1...Bxe3
- 2.Sd6#
- 2.Qd7#
- 1...Bb4
- 2.Qd7#
- 1...Ba3
- 2.Qd7#
- 1...Bd4
- 2.Sd6#
- 2.Qd7#
- 1...Be7
- 2.Qd7#
- 1...Bf8
- 2.Qd7#
- 1...d4
- 2.Sc7#
- 1...f2!
- 1...Bd6+
- 1.c4+?
- 1...dxc4
- 2.Sc7#
- 1...Kxc4!
- 1...dxc4
- 1.Qxe4?
- Keys
- 1.Qh5!
- 1...Bd6+
- 2.Sxd6#
- 1...Kc4
- 2.Sd6#
- 1...Bxe3
- 2.Sd6#
- 2.c4#
- 1...Bb4
- 2.c4#
- 1...Ba3
- 2.c4#
- 1...Bd4
- 2.Sd6#
- 2.c4#
- 1...Be7
- 2.c4#
- 1...Bf8
- 2.c4#
- 1...f2
- 2.Qe2#
- 1...d4
- 2.Sd6#
- 1...Bd6+
- 1.Qh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- K(c);P_SPINB(d),S_FLIGHT::S(H)
- B(d);N_GUARD,XP(D)::S(H)
- B(d);N_GUARD::S(H)
- B(d);CHECK,N_GUARD::S(H),XB(d)
- Tries
- Try
- Q(E);XP(b)
- Threat
- DUALS(3)
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- P(e);::QAB(E)
- Refutation
- P(e);XQ(E)
- Try
- Q(E);
- Vars
- B(d);CHECK,N_GUARD,P_SPINP(e)::S(H),XB(d)
- K(c);P_SPINB(d),S_FLIGHT::S(H)
- P(e);P_SPINB(d)::S(H)
- Refutation
- P(a);
- Try
- Q(E);
- Threat
- QAB(E)
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- Refutation
- P(e);
- Try
- Q(E);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(c);P_SPINB(d),P_SPINP(b),S_FLIGHT::S(H)
- B(d);::QAB(E)
- P(a);OGATE::QAB(E)
- Refutation
- P(e);
- Try
- Q(E);
- Vars
- B(d);CHECK,N_GUARD,P_SPINP(e)::S(H),XB(d)
- K(c);P_SPINB(d),S_FLIGHT::S(H)
- B(d);P_SPINP(e)::P(B)
- P(e);P_SPINB(d)::S(H)
- Refutation
- P(a);
- Try
- Q(E);CHECK,XP(f)
- Vars
- B(d);SBLOCK,XQ(E)::S(H)
- Refutation
- K(c);P-FLIGHT,XQ(E)
- Try
- Q(E);CHECK
- Refutation
- P(g);XQ(E)
- Try
- Q(E);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(c);P_SPINB(d),P_SPINP(e),S_FLIGHT::S(H)
- B(d);::QAB(E)
- P(e);::S(H)
- Refutation
- P(a);
- Try
- P(B);CHECK
- Vars
- P(e);SBLOCK,XP(B)::S(H)
- Refutation
- K(c);P_SPINB(d),S_FLIGHT,XP(B)
- Try
- Actual
- Q(E);
- Vars
- B(d);CHECK,N_GUARD,P_SPINP(e)::S(H),XB(d)
- K(c);P_SPINB(d),S_FLIGHT::S(H)
- B(d);P_SPINP(e)::P(B)
- P(a);OGATE::QAB(E)
- P(e);P_SPINB(d)::S(H)
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).