MESON Chess Problem Database

Problem Display
PID: 207752 (8/4R3/2n4B/7K/7p/Q3N3/2PkppR1/1B1N3r w - - 0 1)

Jada, Faud Emile

The Problemist, 1984

8/4R3/2n4B/7K/7p/Q3N3/2PkppR1/1B1N3r

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qc3#
    • 1...exd1Q+
      • 2.Sg4#
    • 1...exd1S
      • 2.Sf1#
      • 2.Sc4#
    • 1...exd1B+
      • 2.Sg4#
    • 1...exd1R
      • 2.Sf1#
      • 2.Sc4#
      • 2.Sg4#
      • 2.Sd5#
      • 2.Sf5#
    • 1...e1S
      • 2.Rxf2#
  • Tries
    • 1.Sf1+?
      • 1...Kxd1
        • 2.Qc1#
      • 1...Ke1!
    • 1.Sc4+?
      • 1...Kxd1
        • 2.Qc1#
      • 1...Ke1!
    • 1.Sg4+?
      • 1...Kxd1
        • 2.Qc1#
      • 1...Ke1!
    • 1.Sd5+?
      • 1...Kxd1
        • 2.Qc1#
      • 1...Ke1!
    • 1.Sf5+?
      • 1...Kxd1
        • 2.Qc1#
      • 1...Ke1!
    • 1.Rd7+?
      • 1...Ke1
        • 2.Qc3#
      • 1...Sd4!
    • 1.Qc1+?
      • 1...Ke1
        • 2.Sb2#
        • 2.Sxf2#
        • 2.Sc3#
      • 1...Kxc1!
    • 1.Qd3+?
      • 1...Ke1
        • 2.Qc3#
      • 1...Kc1!
  • Keys
    • 1.c4!
      • threat
        • 2.Qc3#
      • 1...exd1Q+
        • 2.Sg4#
      • 1...exd1B+
        • 2.Sg4#
      • 1...Ke1
        • 2.Qc3#
      • 1...Rxd1
        • 2.Sc2#
      • 1...exd1S
        • 2.Sf1#
      • 1...exd1R
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sf5#
      • 1...e1Q
        • 2.Qb2#
      • 1...e1S
        • 2.Rxf2#
      • 1...e1B
        • 2.Qb2#
      • 1...e1R
        • 2.Qb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(E)
    • P(c);CHECK,P_SPINP(d),SBLOCK,XS(B)::B(H)+S(F)
    • P(c);OGATEB,P_SPINP(d),SBLOCK::R(D),XP(d)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(B)::QAR1(E)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • R(I);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAB1(E)
    • Vars
      • P(c);CHECK,P_SPINP(d),SBLOCK,XS(B)::B(H)+S(F)
      • K(b);S_FLIGHT::QAB(E)
      • R(a);SBLOCK,XS(B)::B(H)+S(F)
      • P(c);P_SPINP(d),SBLOCK,XS(B)::B(H)+S(F),DCHECK
      • P(c);P_SPINP(d),SBLOCK::QAR2(E)
      • P(c);OGATEB,P_SPINP(d),SBLOCK::R(D),XP(d)
HTML5 logo

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).