MESON Chess Problem Database
Problem Display
PID: 64449 (4R2B/8/3p2N1/2nP1kpK/7p/1P2P3/BRb3P1/8 w - - 0 1)
Karpeles, Richard
Chess, 1947
#2
10 + 6
SOLUTION
- SOUND
- Sets
- 1...Bb1
- 2.Rf2#
- 1...Bxb3
- 2.Rf2#
- 1...Bd3
- 2.Rf2#
- 1...Be4
- 2.Se7#
- 2.Rf8#
- 1...Sd3
- 2.e4#
- 1...Se4
- 2.Se7#
- 1...h3
- 2.g4#
- 1...g4
- 2.Sxh4#
- 1...Bb1
- Tries
- 1.Rxc2?
- threat
- 2.Rf2#
- 1...Sd3
- 2.e4#
- 1...Se4
- 2.Se7#
- 1...Se6!
- threat
- 1.e4+?
- 1...Bxe4
- 2.Rf8#
- 1...Sxe4!
- 1...Bxe4
- 1.Rxc2?
- Keys
- 1.Bb1!
- 1...Bxb1
- 2.Rf2#
- 1...Sxb3
- 2.Bxc2#
- 1...Se6
- 2.Bxc2#
- 1...Bd3
- 2.Rf2#
- 1...Be4
- 2.Se7#
- 2.Rf2#
- 2.Rf8#
- 1...Sd3
- 2.e4#
- 1...Sa4
- 2.Bxc2#
- 1...Se4
- 2.Se7#
- 1...Sa6
- 2.Bxc2#
- 1...Sb7
- 2.Bxc2#
- 1...Sd7
- 2.Bxc2#
- 1...h3
- 2.g4#
- 1...g4
- 2.Sxh4#
- 1...Bxb1
- 1.Bb1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 1
- Sets
- B(a);OGATE::R(B)
- B(a);OGATE,XP(D)::R(B)
- S(c);N_GUARD,S_CUTB(a)::P(E)
- S(c);SBLOCK::S(H)
- P(b);N_GUARD::P(C)
- P(e);N_GUARD::S(H),XP(b)
- Tries
- Try
- R(B);XB(a)
- Threat
- R(B)
- Vars
- S(c);N_GUARD::P(E)
- S(c);SBLOCK::S(H)
- Refutation
- S(c);
- Try
- P(E);CHECK
- Vars
- B(a);SBLOCK,XP(E)::R(I)
- Refutation
- S(c);XP(E)
- Try
- Actual
- B(A);P_PINB(a)
- Vars
- B(a);N_SPINB(a),OGATE,XB(A)::R(B)
- S(c);N_GUARD,XP(D)::B(A),XB(a)
- S(c);N_GUARD::B(A),XB(a)
- B(a);OGATE::R(B)
- S(c);N_GUARD,N_SPINB(a),S_CUTB(a)::P(E)
- S(c);N_SPINB(a),SBLOCK::S(H)
- P(b);N_GUARD::P(C)
- P(e);N_GUARD::S(H),XP(b)
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).