MESON Chess Problem Database
Problem Display
PID: 155491 (1b6/pQn5/P1N1p1P1/4P3/R1N1k3/1n2B1K1/B1P5/8 w - - 0 1)
Spencer, George Burt
British Chess Magazine, 1905
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Kd5
- 2.S6a5#
- 2.Sxa7#
- 2.Se7#
- 2.Sxb8#
- 2.Sd8#
- 1...Kf5
- 2.Se7#
- 1...Sb5
- 2.Sd4#
- 2.Se7#
- 1...Sxa6
- 2.Sd4#
- 2.Se7#
- 1...Sa8
- 2.Sd4#
- 2.Se7#
- 1...Se8
- 2.Sd4#
- 2.Se7#
- 1...Kd5
- Tries
- 1.Kf2?
- 1...Kd5
- 2.S6a5#
- 2.Sxa7#
- 2.Se7#
- 2.Sxb8#
- 2.Sd8#
- 1...Sxa6
- 2.Sd4#
- 2.Se7#
- 1...Sa1
- 2.Sd6#
- 1...Sc1
- 2.Sd6#
- 1...Sd2
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sb5
- 2.Sd4#
- 2.Se7#
- 1...Sd5
- 2.Sd6#
- 1...Sa8
- 2.Sd4#
- 2.Se7#
- 1...Se8
- 2.Sd4#
- 2.Se7#
- 1...Kf5!
- 1...Kd5
- 1.Sd6+?
- 1...Kd5
- 2.Bxb3#
- 2.c4#
- 1...Kxe3!
- 1...Kd5
- 1.Bxb3?
- 1...Kd5
- 2.Sb2#
- 2.Sd2#
- 2.Sa3#
- 2.S4a5#
- 2.Sb6#
- 2.Sd6#
- 2.Sb4#
- 2.S6a5#
- 2.Sxa7#
- 2.Se7#
- 2.Sxb8#
- 2.Sd8#
- 1...Kf5
- 2.Se7#
- 1...Sxa6
- 2.Sd4#
- 2.Se7#
- 1...Sb5
- 2.Sd4#
- 2.Se7#
- 1...Sa8
- 2.Sd4#
- 2.Se7#
- 1...Se8
- 2.Sd4#
- 2.Se7#
- 1...Sd5!
- 1...Kd5
- 1.Bg1?
- 1...Kd5
- 2.S6a5#
- 2.Sxa7#
- 2.Se7#
- 2.Sxb8#
- 2.Sd8#
- 1...Sxa6
- 2.Sd4#
- 2.Se7#
- 1...Sd5
- 2.Sd6#
- 1...Sa1
- 2.Se3#
- 2.Sd6#
- 1...Sc1
- 2.Se3#
- 2.Sd6#
- 1...Sd2
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sb5
- 2.Sd4#
- 2.Se7#
- 1...Sa8
- 2.Sd4#
- 2.Se7#
- 1...Se8
- 2.Sd4#
- 2.Se7#
- 1...Kf5!
- 1...Kd5
- 1.Bf2?
- 1...Kd5
- 2.S6a5#
- 2.Sxa7#
- 2.Se7#
- 2.Sxb8#
- 2.Sd8#
- 1...Sxa6
- 2.Sd4#
- 2.Se7#
- 1...Sd5
- 2.Sd6#
- 1...Sa1
- 2.Se3#
- 2.Sd6#
- 1...Sc1
- 2.Se3#
- 2.Sd6#
- 1...Sd2
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sb5
- 2.Sd4#
- 2.Se7#
- 1...Sa8
- 2.Sd4#
- 2.Se7#
- 1...Se8
- 2.Sd4#
- 2.Se7#
- 1...Kf5!
- 1...Kd5
- 1.Ra3?
- 1...Kd5
- 2.S6a5#
- 1...Kf5
- 2.Se7#
- 1...Sxa6
- 2.Sd4#
- 2.Se7#
- 1...Sa1
- 2.Sd6#
- 1...Sc1
- 2.Sd6#
- 1...Sd2
- 2.Sd6#
- 1...Sd4
- 2.Sd6#
- 1...Sa5
- 2.Sd6#
- 1...Sc5
- 2.Sd6#
- 1...Sb5
- 2.Sd4#
- 2.Se7#
- 1...Sa8
- 2.Sd4#
- 2.Se7#
- 1...Se8
- 2.Sd4#
- 2.Se7#
- 1...Sd5!
- 1...Kd5
- 1.Kf2?
- Keys
- 1.Qxb3!
- threat
- 2.Sd6#
- 2.Qd3#
- 1...Kd5
- 2.S4a5#
- 1...Kf5
- 2.Qd3#
- threat
- 1.Qxb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(b);S_FLIGHT::S(I)
- Tries
- Try
- K(D);S_FLIGHT
- Vars
- S(a);::R(E)+S(F),DCHECK
- S(a);::S(F)
- S(e);SBLOCK::R(E)+S(F),DCHECK
- Refutation
- K(b);S_FLIGHT
- Try
- S(F);CHECK
- Refutation
- K(b);P-FLIGHT,XB(C)
- Try
- B(A);XS(a)
- Vars
- K(b);S_FLIGHT::S(I)
- Refutation
- S(e);P_PINP(G)
- Try
- B(C);
- Vars
- S(e);P_PINP(G),SBLOCK::R(E)+S(F),DCHECK
- S(a);::R(E)+S(F),DCHECK
- S(a);::S(F)
- Refutation
- K(b);S_FLIGHT
- Try
- B(C);
- Vars
- S(e);P_PINP(G),SBLOCK::R(E)+S(F),DCHECK
- S(a);::R(E)+S(F),DCHECK
- S(a);::S(F)
- Refutation
- K(b);S_FLIGHT
- Try
- R(E);
- Vars
- K(b);S_FLIGHT::QAB(K)+S(I)
- K(b);S_FLIGHT::S(I)
- S(a);::S(F)
- Refutation
- S(e);P_PINP(G)
- Try
- Actual
- Q(K);XS(a)
- Threat
- DUALS(2)
- Vars
- K(b);S_FLIGHT::QAB(K)+S(F)
- K(b);S_FLIGHT::QAB(K)
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).