MESON Chess Problem Database
Problem Display
PID: 232265 (4b3/5R1Q/4B3/4NRP1/1K2kq2/2P5/3ppPp1/8 w - - 0 1)
Westberg, CE
Tidskrift for Schack, 1913
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Qxe5
- 2.Rf4#
- 1...Qxg5
- 2.Rxg5#
- 1...Qh4
- 2.Qxh4#
- 1...Qxf5
- 2.Qxf5#
- 1...Qxe5
- Tries
- 1.Sc4?
- threat
- 2.Rxf4#
- 1...Qd6+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Kd3
- 2.Rxf4#
- 2.Rd5#
- 1...Kf3
- 2.Rxf4#
- 1...Qxg5
- 2.Rf4#
- 2.Re5#
- 2.Rxg5#
- 1...Qxf2
- 2.Rxf2#
- 2.Rf3#
- 2.Rf4#
- 2.Re5#
- 1...Qxf5
- 2.Qxf5#
- 1...Qh2
- 2.Rf4#
- 2.Re5#
- 1...Qe3
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.R5f6#
- 1...Qg3
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.R5f6#
- 1...Qe5
- 2.Rf4#
- 2.Rxe5#
- 1...Qc7
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.R5f6#
- 1...Qf3
- 2.Rxf3#
- 2.Rf4#
- 2.Re5#
- 1...Qg4
- 2.Rf4#
- 2.Re5#
- 1...Qh4
- 2.Rf4#
- 2.Re5#
- 1...Bxf7!
- threat
- 1.R5f6+?
- 1...Qf5
- 2.Qxf5#
- 1...Kxe5+!
- 1...Qf5
- 1.Qh4?
- threat
- 2.Qxf4#
- 1...Qg4
- 2.Qxg4#
- 1...Qxh4!
- threat
- 1.Sc4?
- Keys
- 1.Sd3!
- threat
- 2.Rxf4#
- 1...Kxd3+
- 2.Rxf4#
- 1...Kf3+
- 2.Rxf4#
- 1...Qd6+
- 2.Rc5#
- 1...Qb8+
- 2.Rb5#
- 1...Qxg5
- 2.Sc5#
- 2.Rf4#
- 2.Re5#
- 2.Rxg5#
- 1...Qxf2
- 2.Rf3#
- 2.Re5#
- 1...Qxf5
- 2.Qxf5#
- 1...Qh2
- 2.Sc5#
- 2.Rf4#
- 2.Re5#
- 1...Qe3
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.R5f6#
- 1...Qg3
- 2.Sc5#
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.R5f6#
- 1...Qe5
- 2.Rf4#
- 2.Rxe5#
- 1...Qc7
- 2.Rf3#
- 2.Rf4#
- 2.Ra5#
- 2.Rb5#
- 2.Rc5#
- 2.Rd5#
- 2.Re5#
- 2.R5f6#
- 1...Qf3
- 2.Sc5#
- 2.Rxf3#
- 2.Rf4#
- 2.Re5#
- 1...Qg4
- 2.Sc5#
- 2.Rf4#
- 2.Re5#
- 1...Qh4
- 2.Sc5#
- 2.Rf4#
- 2.Re5#
- threat
- 1.Sd3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 3
- Sets
- Q(e);SBLOCK,XS(D)::QAB(I)+R(E),DCHECK
- Q(e);OGATE,XP(F)::QAB(I)+R(E),XQ(e)
- Q(e);OGATEB::QAR(I),XQ(e)
- Q(e);OGATE,P_SPINQ(e),XR(E)::QAB1(I),XQ(e)
- Tries
- Try
- S(D);
- Threat
- QAB(I)+R(E),DCHECK,XQ(e)
- Vars
- Q(e);CHECK,N_GUARD::QAB(I)+R(E)
- K(d);P_PINS(D),P_SPINQ(e),S_FLIGHT::R1(E),XQ(e)
- Q(e);OGATE,P_SPINQ(e),XR(E)::QAB1(I),XQ(e)
- Refutation
- B(f);XR(H)
- Try
- R(E);CHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e)::QAB1(I),XQ(e)
- Refutation
- K(d);CHECK,P-FLIGHT,XS(D)
- Try
- Q(I);P_PINQ(e)
- Threat
- QAR1(I),XQ(e)
- Vars
- Q(e);OGATEB::QAR2(I),XQ(e)
- Refutation
- Q(e);N_SPINQ(e),XQ(I)
- Try
- Actual
- S(D);
- Threat
- QAB(I)+R(E),DCHECK,XQ(e)
- Vars
- K(d);CHECK,S_FLIGHT,XS(D)::QAB(I)+R(E),XQ(e)
- K(d);CHECK,P_SPINQ(e),S_FLIGHT::R1(E),XQ(e)
- Q(e);CHECK,N_GUARD::QAB(I)+R(E)
- Q(e);OGATE,P_SPINQ(e),XR(E)::QAB1(I),XQ(e)
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).