MESON Chess Problem Database
Problem Display
PID: 186671 (3qR3/4n2K/3p2pN/4n1R1/4k2N/4P3/p4P2/b2Q3b w - - 0 1)
Petite, Efren
Chess, 1960
#2
8 + 9
SOLUTION
- SOUND
- Sets
- 1...Bd4
- 2.Qxd4#
- 1...Sd3
- 2.Qxh1#
- 1...Sf3
- 2.Qc2#
- 2.Qd5#
- 1...Sc4
- 2.Qc2#
- 2.Qd5#
- 1...Sg4
- 2.Qc2#
- 2.Qd5#
- 1...S5c6
- 2.Qc2#
- 2.Qd5#
- 1...Sd7
- 2.Qc2#
- 2.Qd5#
- 1...Sf7
- 2.Qc2#
- 2.Qd5#
- 1...Sd5
- 2.Qc2#
- 1...Sf5
- 2.Rg4#
- 1...S7c6
- 2.Rg4#
- 1...Sc8
- 2.Rg4#
- 1...Sg8
- 2.Rg4#
- 1...Bd4
- Tries
- 1.S6f5?
- threat
- 2.Sg3#
- 1...Sxf5
- 2.Rg4#
- 1...Bd4
- 2.Qxd4#
- 1...gxf5!
- threat
- 1.S6f5?
- Keys
- 1.Sg8!
- threat
- 2.Sf6#
- 1...Sxg8
- 2.Rg4#
- 1...Sd3
- 2.Qxh1#
- 1...Sf3
- 2.Qc2#
- 2.Qd5#
- 1...Sc4
- 2.Qc2#
- 2.Qd5#
- 1...Sg4
- 2.Qc2#
- 2.Qd5#
- 1...S5c6
- 2.Qc2#
- 2.Qd5#
- 1...Sd7
- 2.Qc2#
- 2.Qd5#
- 1...Sf7
- 2.Qc2#
- 2.Qd5#
- 1...Sd5
- 2.Qc2#
- 1...Sf5
- 2.Rg4#
- 1...S7c6
- 2.Rg4#
- 1...Sc8
- 2.Rg4#
- threat
- 1.Sg8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- B(a);N_GUARD::QAR1(A),XB(a)
- S(e);N_GUARD,P_SPINS(h),SBLOCK::QAB(A),XB(b)
- S(h);P_SPINS(e),SBLOCK::QAB(A)
- S(h);P_SPINS(e)::R(E)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- S(h);P_SPINS(e),XS(F)::R(E)
- B(a);N_GUARD::QAR1(A),XB(a)
- Refutation
- P(g);XS(F)
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- S(h);P_SPINS(e),XS(F)::R(E)
- S(e);N_GUARD,P_SPINS(h),SBLOCK::QAB(A),XB(b)
- S(h);P_SPINS(e),SBLOCK::QAB(A)
- S(h);P_SPINS(e)::R(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).