MESON Chess Problem Database
Problem Display
PID: 266409 (K7/B4N2/2Pp1Rp1/2nk1nP1/pQ6/P1R5/8/8 w - - 0 1)
Lewis, Sally
The Problemist, 1997
#2
9 + 6
SOLUTION
- SOUND
- Sets
- 1...Kxc6
- 2.Qb7#
- 1...Sb3
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Se4
- 2.Qc4#
- 1...Sa6
- 2.Qc4#
- 1...Se6
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...Se3
- 2.Rxd6#
- 1...Sg3
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Kxc6
- Tries
- 1.Sxd6?
- threat
- 2.Rxc5#
- 2.Qxc5#
- 1...Ke5
- 2.Rxc5#
- 1...Kxc6
- 2.Qb7#
- 1...Sxd6
- 2.Rxc5#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Se6!
- threat
- 1.Bxc5?
- 1...Kxc6
- 2.Qb7#
- 1...dxc5
- 2.Rxc5#
- 2.Qc4#
- 1...Se3
- 2.Rxd6#
- 1...Sg3
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Sd4!
- 1...Kxc6
- 1.Bb8?
- 1...Kxc6
- 2.Qb7#
- 1...Sb3
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Se4
- 2.Qc4#
- 1...Sa6
- 2.Qc4#
- 1...Se6
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...Se3
- 2.Rxd6#
- 1...Sg3
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Sd4!
- 1...Kxc6
- 1.Rc1?
- 1...Kxc6
- 2.Qb7#
- 1...Sb3
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Se4
- 2.Qc4#
- 1...Sa6
- 2.Qc4#
- 1...Se6
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...Se3
- 2.Rxd6#
- 1...Sg3
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Sd4!
- 1...Kxc6
- 1.Rc2?
- 1...Kxc6
- 2.Qb7#
- 1...Sb3
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Se4
- 2.Qc4#
- 1...Sa6
- 2.Qc4#
- 1...Se6
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...Se3
- 2.Rxd6#
- 1...Sg3
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Sd4!
- 1...Kxc6
- 1.Re3?
- 1...Sxe3
- 2.Rxd6#
- 1...Sb3
- 2.Qe4#
- 1...Sd3
- 2.Qe4#
- 1...Se4
- 2.Qxe4#
- 1...Sa6
- 2.Qe4#
- 1...Se6
- 2.Qe4#
- 1...Sb7
- 2.Qe4#
- 1...Sd7
- 2.Qe4#
- 1...Sg3
- 2.Rxd6#
- 1...Sd4
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Kxc6!
- 1...Sxe3
- 1.Rxg6?
- 1...Kxc6
- 2.Qb7#
- 1...Sb3
- 2.Qc4#
- 1...Sd3
- 2.Qc4#
- 1...Se4
- 2.Qc4#
- 1...Sa6
- 2.Qc4#
- 1...Se6
- 2.Qc4#
- 1...Sb7
- 2.Qc4#
- 1...Sd7
- 2.Qc4#
- 1...Se3
- 2.Rxd6#
- 1...Sg3
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Sd4!
- 1...Kxc6
- 1.Sxd6?
- Keys
- 1.Qb1!
- 1...Kd4
- 2.Qd3#
- 1...Kxc6
- 2.Qb7#
- 1...Sb3
- 2.Qh1#
- 1...Sd3
- 2.Qh1#
- 1...Se4
- 2.Qa2#
- 1...Sa6
- 2.Qh1#
- 1...Se6
- 2.Qh1#
- 1...Sb7
- 2.Qh1#
- 1...Sd7
- 2.Qh1#
- 1...Se3
- 2.Rxd6#
- 1...Sg3
- 2.Rxd6#
- 1...Sd4
- 2.Rxd6#
- 1...Sh4
- 2.Rxd6#
- 1...Sh6
- 2.Rxd6#
- 1...Se7
- 2.Rxd6#
- 1...Sg7
- 2.Rxd6#
- 1...Kd4
- 1.Qb1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 7
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- K(c);OGATEB,P_SPINP(e),P_SPINS(b),S_FLIGHT,XP(E)::QAB1(C)
- S(b);::QAB1(C)
- S(d);N_GUARD::R1(F),XP(e)
- Tries
- Try
- S(H);XP(e)
- Threat
- DUALS(2)
- Vars
- K(c);P-FLIGHT::R(B),XS(b)
- K(c);OGATEB,P_SPINS(b),S_FLIGHT,XP(E)::QAB1(C)
- S(d);XS(H)::R1(B),XS(b)
- S(b);N_GUARD::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
- Refutation
- S(b);
- Try
- B(G);XS(b)
- Vars
- K(c);OGATEB,P_SPINP(e),S_FLIGHT,XP(E)::QAB1(C)
- S(d);N_GUARD::R1(F),XP(e)
- Refutation
- S(d);
- Try
- B(G);
- Vars
- K(c);OGATEB,P_SPINP(e),P_SPINS(b),S_FLIGHT,XP(E)::QAB1(C)
- S(b);::QAB1(C)
- S(d);N_GUARD::R1(F),XP(e)
- Refutation
- S(d);
- Try
- R(B);
- Vars
- K(c);OGATEB,P_SPINP(e),P_SPINS(b),S_FLIGHT,XP(E)::QAB1(C)
- S(b);::QAB1(C)
- S(d);N_GUARD::R1(F),XP(e)
- Refutation
- S(d);
- Try
- R(B);
- Vars
- K(c);OGATEB,P_SPINP(e),P_SPINS(b),S_FLIGHT,XP(E)::QAB1(C)
- S(b);::QAB1(C)
- S(d);N_GUARD::R1(F),XP(e)
- Refutation
- S(d);
- Try
- R(B);
- Vars
- S(d);N_GUARD,XR(B)::R1(F),XP(e)
- S(b);N_GUARD::QAB1(C)
- S(b);N_GUARD::QAB1(C),XS(b)
- S(d);N_GUARD::R1(F),XP(e)
- Refutation
- K(c);P_SPINP(e),S_FLIGHT,XP(E)
- Try
- R(F);XP(f)
- Vars
- K(c);OGATEB,P_SPINP(e),P_SPINS(b),S_FLIGHT,XP(E)::QAB1(C)
- S(b);::QAB1(C)
- S(d);N_GUARD::R1(F),XP(e)
- Refutation
- S(d);
- Try
- Actual
- Q(C);
- Vars
- K(c);N_GUARD,P-FLIGHT,P_SPINS(b),S_CUTS(d)::QAR1(C)
- K(c);OGATEB,P_SPINP(e),P_SPINS(b),S_FLIGHT,XP(E)::QAB1(C)
- S(b);N_GUARD::QAB(C)
- S(b);N_GUARD,SBLOCK::QAB(C)
- S(d);N_GUARD::R1(F),XP(e)
- S(d);N_GUARD,SBLOCK::R1(F),XP(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).