MESON Chess Problem Database
Problem Display
PID: 215923 (8/1p5B/1p1Qp1n1/1Pp2r2/4kN1n/2K1N3/4P1p1/2B3R1 w - - 0 1)
Petite, Efren
Probleemblad, 1980
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxf4
- 2.Qxe6#
- 1...c4
- 2.Qd4#
- 1...Rxf4
- Tries
- 1.Sc4?
- threat
- 2.Qd3#
- 1...Sxf4
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Rd5!
- threat
- 1.Sg4?
- threat
- 2.Sf2#
- 2.Qd3#
- 1...Rxf4
- 2.Qe5#
- 2.Qd3#
- 2.Qxe6#
- 1...Sxf4
- 2.Sf2#
- 2.Sf6#
- 2.Qe5#
- 1...Re5
- 2.Qxe5#
- 2.Qd3#
- 1...Rg5
- 2.Qd3#
- 1...Rh5
- 2.Qd3#
- 1...Rf6
- 2.Qe5#
- 2.Qd3#
- 1...Rf7
- 2.Qe5#
- 2.Qd3#
- 2.Qxe6#
- 1...Rf8
- 2.Qe5#
- 2.Qd3#
- 2.Qxe6#
- 1...Se5
- 2.Sf2#
- 2.Sf6#
- 2.Qxe5#
- 1...c4
- 2.Sf2#
- 2.Qd4#
- 1...Rd5!
- threat
- 1.Sh3?
- 1...Rf1
- 2.Sg5#
- 2.Qxe6#
- 1...Rf2
- 2.Sxf2#
- 2.Sg5#
- 2.Qxe6#
- 1...Rf3
- 2.Sg5#
- 2.Qxe6#
- 1...Rf4
- 2.Sg5#
- 2.Qxf4#
- 2.Qxe6#
- 1...Rd5
- 2.Sf2#
- 2.Qf4#
- 1...Re5
- 2.Qd3#
- 1...Rg5
- 2.Sf2#
- 2.Sxg5#
- 2.Qf4#
- 1...Rh5
- 2.Sf2#
- 2.Qf4#
- 1...Rf6
- 2.Sg5#
- 1...Rf7
- 2.Sg5#
- 2.Qxe6#
- 1...Rf8
- 2.Sg5#
- 2.Qxe6#
- 1...Sf3
- 2.Sf2#
- 1...Sf4
- 2.Sf2#
- 2.Sg5#
- 2.Qxf4#
- 1...Se7
- 2.Sf2#
- 2.Sg5#
- 2.Qf4#
- 2.Qxe6#
- 1...Sf8
- 2.Sf2#
- 2.Sg5#
- 2.Qf4#
- 1...Sh8
- 2.Sf2#
- 2.Sg5#
- 2.Qf4#
- 2.Qxe6#
- 1...c4
- 2.Qd4#
- 1...e5
- 2.Qd3#
- 2.Qd5#
- 1...Se5!
- 1...Rf1
- 1.Sxe6?
- 1...Se5
- 2.Qd5#
- 1...Rf1
- 2.Sg5#
- 2.Qd5#
- 1...Rf2
- 2.Sg5#
- 2.Qd5#
- 1...Rf3
- 2.Sg5#
- 2.Qd5#
- 1...Rf4
- 2.Sg5#
- 2.Qxf4#
- 2.Qd5#
- 1...Rd5
- 2.Qf4#
- 2.Qxd5#
- 1...Re5
- 2.Qd3#
- 1...Rg5
- 2.Sxg5#
- 2.Qf4#
- 1...Rh5
- 2.Qf4#
- 1...Rf6
- 2.Sg5#
- 2.Qd5#
- 1...Rf7
- 2.Sg5#
- 2.Qd5#
- 1...Rf8
- 2.Sg5#
- 2.Qd5#
- 1...Sf4
- 2.Sg5#
- 2.Qxf4#
- 1...Se7
- 2.Sg5#
- 2.Qf4#
- 1...Sf8
- 2.Sg5#
- 2.Qf4#
- 2.Qd5#
- 1...Sh8
- 2.Sg5#
- 2.Qf4#
- 2.Qd5#
- 1...c4
- 2.Qd4#
- 1...Sf3!
- 1...Se5
- 1.Sxg6?
- threat
- 2.Qd3#
- 1...Rd5
- 2.Qf4#
- 1...c4
- 2.Qd4#
- 1...Sxg6!
- threat
- 1.Qd3+?
- 1...Ke5
- 2.Sg4#
- 1...Kxf4!
- 1...Ke5
- 1.Sc4?
- Keys
- 1.Sd3!
- 1...Rf1
- 2.Qe5#
- 2.Qxe6#
- 1...Rf2
- 2.Sxf2#
- 2.Qe5#
- 2.Qxe6#
- 1...Rf3
- 2.Qe5#
- 2.Qxe6#
- 1...Rf4
- 2.Qxf4#
- 2.Qe5#
- 2.Qxe6#
- 1...Rd5
- 2.Sf2#
- 2.Qf4#
- 1...Re5
- 2.Qxe5#
- 1...Rg5
- 2.Sf2#
- 2.Qf4#
- 1...Rh5
- 2.Sf2#
- 2.Qf4#
- 1...Rf6
- 2.Qe5#
- 1...Rf7
- 2.Qe5#
- 2.Qxe6#
- 1...Rf8
- 2.Qe5#
- 2.Qxe6#
- 1...Sf3
- 2.Sf2#
- 1...Sf4
- 2.Sf2#
- 2.Qxf4#
- 2.Qe5#
- 1...Se5
- 2.Qxe5#
- 1...Se7
- 2.Sf2#
- 2.Qf4#
- 2.Qe5#
- 2.Qxe6#
- 1...Sf8
- 2.Sf2#
- 2.Qf4#
- 2.Qe5#
- 1...Sh8
- 2.Sf2#
- 2.Qf4#
- 2.Qe5#
- 2.Qxe6#
- 1...c4
- 2.Qd4#
- 1...e5
- 2.Qd5#
- 1...Rf1
- 1.Sd3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- R(e);N_GUARD,P_SPINS(h),SBLOCK,XS(F)::QAR2(H),XP(g)
- P(d);N_GUARD::QAR1(H)
- Tries
- Try
- S(E);
- Threat
- QAB1(H)
- Vars
- S(h);N_GUARD,P_SPINR(e),XS(F)::QAR1(H)
- S(h);N_GUARD,P_SPINR(e)::QAR1(H),XS(h)
- Refutation
- R(e);P_SPINS(h)
- Try
- S(E);
- Threat
- DUALS(2)
- Vars
- R(e);P_SPINS(h)::QAB1(H)
- Refutation
- R(e);P_SPINS(h)
- Try
- S(F);
- Vars
- R(e);P_SPINS(h),SBLOCK::QAB1(H)
- R(e);N_GUARD,P_SPINS(h)::S(F)
- S(c);S_CUTR(e)::S(F)
- P(d);N_GUARD::QAR1(H)
- Refutation
- S(h);P_SPINR(e)
- Try
- S(F);XP(g)
- Vars
- S(h);P_SPINR(e)::QAB1(H)
- R(e);P_SPINS(h),SBLOCK::QAB1(H)
- R(e);N_GUARD,P_SPINS(h)::QAR1(H)
- P(d);N_GUARD::QAR1(H)
- Refutation
- S(c);
- Try
- S(F);XS(h)
- Threat
- QAB1(H)
- Vars
- R(e);N_GUARD::QAR1(H)
- P(d);N_GUARD::QAR1(H)
- Refutation
- S(c);XS(F)
- Try
- Q(H);CHECK
- Vars
- K(b);P-FLIGHT::S(E)
- Refutation
- K(b);P-FLIGHT,XS(F)
- Try
- Actual
- S(F);
- Vars
- R(e);N_GUARD,P_SPINS(h)::QAR1(H),XR(e)
- R(e);N_GUARD,P_SPINS(h)::QAR1(H)
- S(c);S_CUTR(e)::S(F)
- S(h);N_GUARD,P_SPINR(e)::QAR1(H),XS(h)
- P(d);N_GUARD::QAR1(H)
- P(g);N_GUARD,S_CUTR(e)::QAB1(H)
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).