MESON Chess Problem Database
Problem Display
PID: 249582 (6Q1/8/n5N1/6p1/1B3bR1/4k3/4PNP1/2K1R3 w - - 0 1)
Krause, W
Deutsche Schachzeitung, 1891
#2
9 + 4
| 6490 | yacpdb | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Kd4+
- 2.e3#
- 1...Bh2
- 2.Sd1#
- 1...Bg3
- 2.Sd1#
- 1...Be5
- 2.Sd1#
- 1...Bd6
- 2.Sd1#
- 1...Bc7
- 2.Sd1#
- 1...Bb8
- 2.Sd1#
- 1...Sc5
- 2.Bxc5#
- 1...Sc7
- 2.Bc5#
- 1...Sb8
- 2.Bc5#
- 1...Kd4+
- Tries
- 1.Rxf4?
- threat
- 2.Sd1#
- 2.Sg4#
- 2.Bd2#
- 2.Qb3#
- 2.Qe6#
- 2.Qe8#
- 1...Sxb4
- 2.Sd1#
- 2.Sg4#
- 2.Qe6#
- 2.Qe8#
- 1...Sc5
- 2.Sd1#
- 2.Sg4#
- 2.Bd2#
- 2.Bxc5#
- 1...Sc7
- 2.Sd1#
- 2.Sg4#
- 2.Bd2#
- 2.Bc5#
- 2.Qb3#
- 1...g4
- 2.Sd1#
- 2.Sxg4#
- 2.Bd2#
- 2.Qb3#
- 2.Qe6#
- 2.Qe8#
- 1...gxf4!
- threat
- 1.Qb3+?
- 1...Kd4+
- 2.e3#
- 1...Kxf2+!
- 1...Kd4+
- 1.Qe6+?
- 1...Kd4+
- 2.e3#
- 1...Be5
- 2.Sd1#
- 1...Kxf2+!
- 1...Kd4+
- 1.Qf7?
- 1...Kd4+
- 2.e3#
- 1...Sxb4
- 2.Qa7#
- 1...Bh2
- 2.Sd1#
- 2.Bd2#
- 2.Re4#
- 2.Qf3#
- 1...Bg3
- 2.Sd1#
- 2.Bd2#
- 2.Re4#
- 2.Qf3#
- 1...Be5
- 2.Sd1#
- 2.Bd2#
- 2.Re4#
- 2.Qf3#
- 1...Bd6
- 2.Sd1#
- 2.Bd2#
- 2.Re4#
- 2.Qf3#
- 1...Bc7
- 2.Sd1#
- 2.Bd2#
- 2.Re4#
- 2.Qf3#
- 1...Bb8
- 2.Sd1#
- 2.Bd2#
- 2.Re4#
- 2.Qf3#
- 1...Sc5
- 2.Bxc5#
- 1...Sc7
- 2.Bc5#
- 1...Sb8
- 2.Bc5#
- 2.Qa7#
- 1...Kxf2+!
- 1...Kd4+
- 1.Qg7?
- 1...Sxb4
- 2.Qa7#
- 1...Bh2
- 2.Sd1#
- 2.Qd4#
- 1...Bg3
- 2.Sd1#
- 2.Qd4#
- 1...Be5
- 2.Sd1#
- 1...Bd6
- 2.Sd1#
- 2.Qd4#
- 1...Bc7
- 2.Sd1#
- 2.Qd4#
- 1...Bb8
- 2.Sd1#
- 2.Qd4#
- 1...Sc5
- 2.Bxc5#
- 1...Sc7
- 2.Bc5#
- 1...Sb8
- 2.Bc5#
- 2.Qa7#
- 1...Kxf2+!
- 1...Sxb4
- 1.Qd8?
- 1...Sxb4
- 2.Qb6#
- 1...Bh2
- 2.Sd1#
- 2.Qd4#
- 1...Bg3
- 2.Sd1#
- 2.Qd4#
- 1...Be5
- 2.Sd1#
- 1...Bd6
- 2.Sd1#
- 1...Bc7
- 2.Sd1#
- 2.Qd4#
- 1...Bb8
- 2.Sd1#
- 2.Qd4#
- 1...Sc5
- 2.Bxc5#
- 1...Sc7
- 2.Bc5#
- 1...Sb8
- 2.Bc5#
- 2.Qb6#
- 1...Kxf2+!
- 1...Sxb4
- 1.Rxf4?
- Keys
- 1.Qa2!
- 1...Kxf2+
- 2.e3#
- 1...Kd4+
- 2.e3#
- 1...Sxb4
- 2.Qa7#
- 1...Bh2
- 2.Sd1#
- 1...Bg3
- 2.Sd1#
- 1...Be5
- 2.Sd1#
- 1...Bd6
- 2.Sd1#
- 1...Bc7
- 2.Sd1#
- 1...Bb8
- 2.Sd1#
- 1...Sc5
- 2.Bxc5#
- 1...Sc7
- 2.Bc5#
- 2.Qa7#
- 1...Sb8
- 2.Bc5#
- 2.Qa7#
- 1...Kxf2+
- 1.Qa2!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- K(a);CHECK,OGATE,P_SPINB(b),S_FLIGHT::P(C)
- B(b);::S(D)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- Tries
- Try
- R(G);XB(b)
- Threat
- DUALS(6)
- Refutation
- P(c);XR(G)
- Try
- Q(I);CHECK
- Vars
- K(a);CHECK,OGATE,P_SPINB(b),S_FLIGHT::P(C)
- Refutation
- K(a);CHECK,S_FLIGHT,XS(D)
- Try
- Q(I);CHECK
- Vars
- K(a);CHECK,OGATE,P_SPINB(b),S_FLIGHT::P(C)
- B(b);P_SPINB(b)::S(D)
- Refutation
- K(a);CHECK,S_FLIGHT,XS(D)
- Try
- Q(I);
- Vars
- K(a);CHECK,OGATE,P_SPINB(b),S_FLIGHT::P(C)
- S(d);N_GUARD,XB(F)::QAB(I)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- Refutation
- K(a);CHECK,P_SPINB(b),S_FLIGHT,XS(D)
- Try
- Q(I);
- Vars
- S(d);N_GUARD,XB(F)::QAB(I)
- B(b);::S(D)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- Refutation
- K(a);CHECK,S_FLIGHT,XS(D)
- Try
- Q(I);
- Vars
- S(d);N_GUARD,XB(F)::QAB(I)
- B(b);::S(D)
- S(d);N_GUARD::B(F),XS(d)
- S(d);N_GUARD::B(F)
- Refutation
- K(a);CHECK,S_FLIGHT,XS(D)
- Try
- Actual
- Q(I);
- Vars
- K(a);CHECK,OGATE,S_FLIGHT,XS(D)::QAR(I)+P(C)
- K(a);CHECK,OGATE,P_SPINB(b),S_FLIGHT::P(C)
- S(d);OGATE,XB(F)::QAB(I)
- B(b);::S(D)
- S(d);N_GUARD::B(F),XS(d)
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).