MESON Chess Problem Database
Problem Display
PID: 255992 (6B1/5R2/6pp/4P1P1/4k1NK/5N1Q/4nP1n/b2R4 w - - 0 1)
Easter, Norris
British Chess Magazine, 1933
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Sc3
- 2.Rd4#
- 1...Sf4
- 2.Sf6#
- 1...Sxf3+
- 2.Qxf3#
- 1...hxg5+
- 2.Sxg5#
- 1...Sc3
- Tries
- 1.Rf4+?
- 1...Sxf4
- 2.Sf6#
- 1...Kxf4!
- 1...Sxf4
- 1.Rf6?
- threat
- 2.Bd5#
- 1...Sxf3+
- 2.Qxf3#
- 1...hxg5+
- 2.Sxg5#
- 1...Bd4
- 2.Sd2#
- 1...Sc3
- 2.Rd4#
- 1...Sd4
- 2.Sd2#
- 1...Sf4!
- threat
- 1.Rf4+?
- Keys
- 1.Rf8!
- threat
- 2.Bd5#
- 1...Sxf3+
- 2.Qxf3#
- 1...hxg5+
- 2.Sxg5#
- 1...Bd4
- 2.Sd2#
- 1...Sc3
- 2.Rd4#
- 1...Sd4
- 2.Sd2#
- 1...Sf4
- 2.Sf6#
- threat
- 1.Rf8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD,S_CUTB(a)::R1(A)
- S(b);SBLOCK::S(E)
- S(c);CHECK,OGATE,XS(C)::QAB1(D),XS(c)
- P(f);CHECK,XP(H)::S(C),XP(f)
- Tries
- Try
- R(I);CHECK
- Vars
- S(b);SBLOCK,XR(I)::S(E)
- Refutation
- K(d);P-FLIGHT,XR(I)
- Try
- R(I);
- Threat
- B(J)
- Vars
- S(c);CHECK,OGATE,XS(C)::QAB1(D),XS(c)
- P(f);CHECK,XP(H)::S(C),XP(f)
- B(a);SBLOCK::S(C)
- S(b);N_GUARD,S_CUTB(a)::R1(A)
- S(b);SBLOCK::S(C)
- Refutation
- S(b);
- Try
- Actual
- R(I);
- Threat
- B(J)
- Vars
- S(c);CHECK,OGATE,XS(C)::QAB1(D),XS(c)
- P(f);CHECK,XP(H)::S(C),XP(f)
- B(a);SBLOCK::S(C)
- S(b);N_GUARD,S_CUTB(a)::R1(A)
- S(b);SBLOCK::S(C)
- S(b);SBLOCK::S(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).